Podcasts about 3d ct

How can new tools help you be successful in sinus surgery? In this episode of the BackTable ENT Podcast, Dr. Peter-John “PJ” Wormald, Chair of Otolaryngology at Adelaide and Flinders Universities, delves into the complexities of frontal sinus surgery and innovative solutions for common surgical challenges with hosts Dr. Ashley Agan and Dr. Gopi Shah. --- SYNPOSIS The surgeons discuss chronic frontal sinus disease, when to consider surgery, and optimal post-operative care. Dr. Wormald shares his surgical strategies, including the use of innovative technologies like Chitogel and 3D CT planning software for better surgical outcomes. He also touches on the challenges in training new surgeons and the potential for advances in medical simulation to improve surgical education. This thorough discussion offers insights into the latest techniques and innovations in sinus surgery. --- TIMESTAMPS 00:00 - Introduction 03:46 - Understanding Chronic Frontal Sinus Disease 07:57 - Approach to Sinus Surgery 13:27 - Antibiotic and Steroid Use in Sinus Treatment 18:23 - Patient Consultation and Decision Making 22:51 - Training the Next Generation of Surgeons 36:29 - Analyzing Surgical Factors & Predicting Surgical Outcomes 47:37 - Post-Operative Management 59:02 - Biologics and Long-Term Care 01:07:42 - Innovations in Surgical Training & Final Thoughts --- RESOURCES BackTable+ for ENT https://plus.backtable.com/pages/ent PJ Wormald Profile https://researchers.adelaide.edu.au/profile/peterj.wormald Free Stryker Software for Windows https://www.dropbox.com/s/r4sodtqv221c5yk/Stryker%20Building%20Blocks%203.6.0%20Windows%20Setup%20-%20FESS%202022.exe?dl=0 Free Stryker Software for Mac https://www.dropbox.com/s/0iac9pmzdz0lqkz/Stryker%20Building%20Blocks%203.6.0%20macOS%20Setup%20-%20FESS%202022.dmg?dl=0

During this bi-monthly series, interviews with authors of landmark orthopedic trauma articles will be featured and discussed. The series will be based on anatomic location/injuries and will provide an opportunity to understand what prompted the study, how practice has changed, limitations, and key take-away points.Featured ArticlesRim plate augmentation of the posterolateral bare area of the tibial plateau using a 3.5-mm precontoured locking compression plate: A cadaveric studyComminuted inferior pole fracture of patella can be successfully treated with rim-plate-augmented separate vertical wiringClinical outcome of rim-plate-augmented separate vertical wiring with supplementary fixation for the treatment of patellar fracture associated comminuted inferior poleFracture morphology of AO/OTA 31-A trochanteric fractures: A 3D CT study with an emphasis on coronal fragmentsOutcome of multi-staged induced membrane technique based on post debridement cultures for the management of critical-sized bone defect following fracture-related infection

Join us on this episode of Fearlessly Authentic as we welcome Dr. Jason Champagne, one of Hollywood's foremost facial plastic surgeons renowned for his artful touch and customized approach to aesthetic transformations. Favored by A-list celebrities like Chrissy Teigen and Meagan Good, Dr. Champagne has garnered significant attention for his signature Champagne Brows. Beyond eyebrows, he excels in jaw surgery, chin implants, forehead reduction, and rhinoplasty, offering personalized, natural-looking results. Dr. Champagne sets himself apart by employing advanced 3D CT scans to craft custom jaw and chin implants, ensuring flawless outcomes tailored to each patient. His expertise also extends to the innovative Champagne Hairline Refine procedure, which has advanced the field of hairline modification. With a wealth of experience, Dr. Champagne is also a published author, sharing his groundbreaking techniques in facial aesthetic surgery, hairline lowering, and hair restoration with colleagues around the globe. Based in Beverly Hills, his practice epitomizes excellence in cosmetic facial procedures, attracting clients seeking refined, elegant transformations. In this episode, we dive deep into Dr. Champagne's journey to becoming a sought-after facial plastic surgeon, his unique approach to facial plastic surgery, and his renowned work with celebrities. We explore his specialized procedures, the impact of advanced technology on his practice, and his contributions to the field through published work. Dr. Champagne also shares valuable advice for those considering facial plastic surgery, addresses common misconceptions, and recounts memorable patient success stories that have shaped his approach. Tune in for an insightful conversation that promises to inspire and inform anyone interested in the art and science of facial plastic surgery.

Today on Holistic Dentistry we're talking about a topic that I receive questions about a lot: wisdom teeth! In this episode, Dr. Sanda details wisdom teeth beyond extraction. This includes specific ways to clean wisdom teeth, why wisdom teeth may be sore, and tips on how to take care of wisdom teeth in the mouth.  Then, we share why and when a dentist will recommend the removal of wisdom teeth and strategies for ensuring wisdom teeth removal is the safest option for you. Plus, for those of you curious about how to ease the wisdom teeth removal healing process, we cover that too! Want to see more of The Holistic Dentistry Show? Watch our weekly episodes on YouTube!  Do you have a mouth- or body-related question for Dr. Sanda? Send her a message on Instagram! Remember, you're not healthy until your mouth is healthy. So take care of it in the most natural way.  Key Takeaways: (1:00) The location of and history of wisdom teeth   (2:34) How fiber affects jaw development and digestion (3:58) Why Dr. Sanda decided to keep some of her wisdom teeth (4:24) Visual signs of impacted wisdom teeth  (5:26) The dangers of partially-impacted wisdom teeth (7:27) Reasons wisdom teeth removal isn't recommended (9:21) The importance of getting a 3D CT scan prior to potential removal (12:02) Wisdom teeth from a meridian perspective  (13:13) Wisdom teeth and flossing tips  (14:17) Foods that easily trap in gum tissues  (15:37) The connection between upper wisdom and the sinuses (16:55) The effect of putting platelet-rich fibrin (PRF) into wisdom teeth  (17:57) Homeopathic supplements for wisdom teeth recovery (19:58) An antioxidant-rich veggie meal Dr. Sana designed for wisdom teeth healing Resources: Learn more about Orsana Veggie Meal Learn more about Orsana Enzyme Support Connect With Us:  AskDrSanda | YouTube BeverlyHillsDentalHealth.com | Instagram DrSandaMoldovan.com | Instagram Orasana.com | Instagram

And we are back for Part II of our discussion with Dr. Brian Lau. Our conversation picks back up with a discussion of surgical treatment options for more significant glenoid bone loss. There is a 2021 yellow journal article titled Diagnosis and Management of Traumatic Anterior Shoulder Instability that nicely outlines a treatment algorithm based on percentage of glenoid bone loss as well as the presence and severity of a Hill Sachs lesion. Matt Provencher and colleagues explain that good results can be expected after Bankart repair in on-track Hill-Sachs lesions with glenoid bone loss less than 13.5%. Bankart repair without additional procedures is not recommended in off-track Hill Sachs lesions, regardless of the extent of glenoid bone loss. Bone block procedures are recommended when glenoid bone loss is greater than 20% to 25% or when the Hill Sachs lesion is off-track. Then, from the April issue of AJSM this year, we discuss the study performed by our guest Dr. Lau and his team at Duke, titled Distal Clavicle Autograft Versus Traditional and Congruent Arc Latarjet Procedures. This laboratory analysis compared five different configurations of two local autograft options – coracoid and distal clavicle – using both 3D CT and 3D MRI. They looked at how much the glenoid surface area was augmented (important to address the glenoid bone loss) and the amount of glenoid apposition provided (bone-to-bone contact being important for graft healing). The authors found that the congruent arc Latarjet procedure had the largest graft surface area, the standard Latarjet procedure had the most bone-on-bone contact and the distal clavicle attached by its inferior surface had the largest graft width. This paper also found that differences between 3D CT and 3D MRI were small and likely not clinically significant.We finish up our conversation with a focus on rehab and returning to play after shoulder stabilization surgery. The last article we reference is titled Criteria-based Return-to-Sport Testing is Associated with Lower Recurrence Rates following Arthroscopic Bankart Repair. Albert Lin and colleagues and UPMC evaluated the use of a criteria-based return-to-sport testing protocol, which includes assessments of strength and function using the closed kinetic chain upper extremity stability test and the unilateral seated shot-put test. The authors found that athletes who underwent this testing protocol to guide their clearance to return to sports had a lower rate of recurrent instability than those cleared to return based on the time from surgery (5% vs. 22%).

The foot and ankle are complex structures comprised of 26 small bones and 29 muscles. With so many structures and an incredible amount of variation in how deformities can present, surgical corrections aren't so simple. For example, there are more than 100 operations that can be performed for hallux valgus deformities, commonly known as bunions. 3D planning helps to address the variations and nuances of foot and ankle surgeries to assist in obtaining optical post-surgical outcomes.How is one company, RedPoint Medical 3D, making 3D planning more accessible to orthopedic surgeons?On this episode of CurveBeam AI, host Lew Schon, MD, Director of Orthopedic Innovation at the Institute of Foot and Ankle Reconstruction at Mercy Medical Center, speaks with Dr. Adam Perler, DPM, Co-Founder & Chief Innovations Officer at RedPoint Medical 3D and Surgeon at Alexander Orthopaedic Associates, to discuss the RedPoint Medical 3D has created a vendor-agnostic, streamlined process for 3D modeling, custom surgical planning, and 3D printed cut guides.Dr. Schon and Dr. Perler also discussed…1. The role that 3D printing plays in helping surgeons visualize their surgical approaches2. How older and more experienced surgeons have reacted to the redpointing philosophy3. What the process of redpointing looks like from receiving a 3D CT scan to the point of the surgical procedureDr. Perler explained how RedPoint Medical 3D was named. “Redpointing is where a professional climber will write down all the details of the route, where they're going to place their hands, where they're going to place their feet. And then they hand that plan to a judge and they don't actually touch the rock face until they hand the plan over. Then they go about their climb. If they do it perfectly, that's called redpointing. So, to me, this was a vision of what I wanted to be able to help surgeons do with their surgeries and I would love to get to the point where redpointing becomes a very grammatical term for us all to describe, ‘Hey, I've got this big surgery coming up' and another surgeon says, ‘Hey, are you going to redpoint that?' meaning are you going to meticulously plan that and flawlessly execute that?”Dr. Adam Perler, Doctor of Podiatric Medicine (DPM), is an experienced foot and ankle surgeon passionate about new product development for surgeries. He is Co-Founder & Chief Innovations Officer at RedPoint Medical 3D and Surgeon at Alexander Orthopedic Associates. Dr. Perler earned his B.A. in Biology from Indiana University Bloomington and his DPM from Dr. William M. Scholl College of Podiatric Medicine at Rosalind Franklin University of Medicine. He is residency-trained at Palmetto General Hospital's Surgical Residency and later pursued fellowship training from the Ilizarov Orthopedic Lower Extremity Reconstructive Fellowship and the AO Trauma Fellowship in Hannover, Germany.

Let's demystify TMD management and surgical intervention!  Join Chad, JB, and Jeff with their guest, Dr. Brian Shah as he shares his journey and methodology in TMD management.Dr. Brian S. Shah was born in Chicago, Illinois and grew up outside of Cleveland, Ohio. He did his undergraduate studies at Miami University in Oxford, Ohio where he majored in microbiology and received his Bachelor of Arts in 1996. Dr. Shah then completed dental school at The Ohio State University College of Dentistry where he received the Arden K. Hegtvedt research scholarship in the department of Oral and Maxillofacial Surgery. Dr. Shah was lucky enough to do his research with the late Dr. Larry Peterson. During his time at Ohio State, he was also named a Hinman Scholar which was awarded in Atlanta, Georgia. Dr. Shah continued his studies and received his MD from Harvard Medical School in 2003. He did his General Surgery and Oral and Maxillofacial Surgery residencies in the Harvard system. This included rotations at Massachusetts General Hospital, Boston Children's Hospital, The Brigham and Women's Hospital, The Beth Israel Hospital and The Massachusetts Eye and Ear Infirmary. In 2008 Dr. Shah received his Board Certification by The American Board of Oral and Maxillofacial Surgery.Dr. Shah was in academic practice at Yale and maintained a private practice in Chicago prior to joining Dr. Piper. The motivation to join and learn from Dr. Piper was born out of the goal to provide the highest level of care for patients with maxillofacial disharmony and TMJ disorders. The interplay between the joints, the bite and the face cannot be ignored and treating one without addressing the others can lead to sub optimal results. Dr. Shah underwent orthognathic surgery as a sophomore in college and has experienced firsthand how life changing properly executed surgery can be. Dr. Shah's practice is devoted to TMJ surgery and facial reconstruction. By utilizing 3D CT imaging, intra-oral 3D scanning and CAD/CAM technology, Dr. Shah can diagnose and treat facial deformities with unparalleled accuracy. He invites the patient to be part of the treatment planning session which is essential to the co-discovery process. By educating patients on their condition and available treatment options, he has found anxiety can be minimized. Dr. Shah offers procedures such as custom facial implants, Botox and fillers to “touch-up” anything that cannot be accomplished with orthognathic surgery alone.Dr. Shah is teaching faculty for AO.  The AO was founded on November 6, 1958 by a group of Swiss surgeons to champion revolutionary techniques of internal fixation for bone fractures. As faculty, Dr. Shah volunteers his time to teach surgical residents and practicing doctors the AO principles of trauma surgery. His professional affiliations include the American Medical Association, the American Dental Association, the American Association of Oral and Maxillofacial Surgeons, the American College of Oral and Maxillofacial Surgeons, the International Association of Oral and Maxillofacial Surgeons, the American Association of Cosmetic Surgery and the AO.

Five articles from the July 2022 issue summarized in five minutes, with the addition of a brief editorial commentary. The 5-in-5 feature is designed to give readers an overview of articles that may pique their interest and encourage more detailed reading. It may also be used by busy readers who would prefer a brief audio summary in order to select the articles they want to read in full. The featured articles for this month are, "Descriptive Demographics and Outcomes of Patients Undergoing Revision Anterior Cruciate Ligament Reconstruction With and Without Bone Tunnel Grafting", "Outcomes for the Arthroscopic Treatment of Femoroacetabular Impingement Syndrome With Acetabular Retroversion: A 3D Computed Tomography Analysis", "Ulnar Collateral Ligament Reconstruction Does Not Decrease Spin Rate or Performance in Major League Pitchers", "Nonanatomic All-Inside Arthroscopic Anterior Talofibular Ligament Repair With a High-Position Anchor versus Anatomic Repair: An Analysis Based on 3D CT", and "Increased Joint Space Narrowing After Arthroscopic Partial Meniscectomy: Data From the Osteoarthritis Initiative".   Click here to read the articles.

丽莎老师讲机器人之将3D打印与CT扫描结合实现快速逼真的3D打印物体

News items read by Laura Kennedy include: Ancient human DNA extracted from lice glue exhibits prehistoric migration patterns of Argentina's early Ansilta culture (details) Jin Dynasty tomb from northern China holds murals depicting good luck symbols (details) 3D CT scan allows for virtual unwrapping of the mummy of Amenhotep the First (details) New finds from Iran's Burnt City site suggest farflung Bronze Age trade (details)

Altered sensation of lip and chin, an altered bite or malocclusion or change in tooth position are important signs of significant injury Ensure there is no compromise of the airway or underlying circulation Investigate with a 3D-CT without contrast or 2 plain X-rays, an OPG and a P-A of the mandible If the fracture is open, initiate antibiotics and ensure fracture and wound is managed within 48 hours   Host:Dr David Lim, GP and Medical Educator Total time: 30 mins Guest:Clinical A/Prof Dieter Gebauer, Consultant Oral and Maxillofacial Surgeon; Royal Perth Hospital; Principal Surgeon, Oral Surgery Service, Mount Lawley, WA   Register for our fortnightly FREE WEBCASTS Every second Tuesday | 7:00pm-9:00pm AEST Click here to register for the next one See omnystudio.com/listener for privacy information.

Woodlands Family Dental is an award winning, full service dental office that offers general dentistry, cosmetic services, implants and orthodontics. They are committed to offering the best patient experience as well as using the latest state of the art technology, such as, 3D-CT scans, lasers and CAD/CAM one visit crown technology.

Victor Ortiz, M.D. Sistema de cirugía asistida por brazo robótico Mako. El sistema de cirugía asistida por brazo robótico Mako, proporciona una experiencia quirúrgica más predecible en los reemplazos articulares, ofrece aplicaciones para reemplazo parcial y total de rodilla, y reemplazo total de cadera. La segmentación de los datos de la tomografía computarizada (TC) genera un modelo de la anatomía ósea del paciente en 3D que permite una planificación preoperatoria específica para cada persona. El plan individualizado es revisado por el médico antes del procedimiento y el brazo robótico realiza la preparación ósea para lograr un posicionamiento preciso y funcional del implante. El sistema ayuda al cirujano a realizar ajustes intraoperatorios para optimizar la colocación del implante. Los datos cinemáticos y de los tejidos blandos son recolectados intraoperatoriamente y aplicados al modelo de TC virtual, y basándose en ellos el médico puede revisar de nuevo el plan preoperatorio y, si es necesario, modificarlo para para obtener un balance dinámico de la articulación. Minimally Invasive MAKO Robotic-Assisted Outpatient Hip & Knee Joint Replacement Surgery performed by Robert A. Kayal, M.D., our Chief of Orthopaedic Surgery. #Mako Smart-Robotics is an innovative solution for many suffering from painful arthritis of the knee or hip. Mako uses a 3D CT-based planning software so your surgeon can know more about your anatomy to create a personalized joint replacement surgical plan.   Necesitas un Cirujano especializado en ORTOPEDIA , cirugia robotica o Quiropráctico. Llamanos para una consulta. Hablamos ESPAÑOL. Para obtener más información sobre cómo un especialista en ortopedia puede ayudarlo a usted o a un ser querido, contáctenos: 844-777-0910 201-861-4447 www.KayalOrtho.com #CIRUGIAROBOTICA #HipPain #kneePain #RoboticSurgery#HerniatedDisc #healthcare #surgery #shoulder #back #BackPain#NeckPain #hospital #doctor #md #northbergen #Paramus#HudsonCounty #BergenCounty #FranklinLakes #unioncitynj #NJ #NY#KayalOrtho #BestDoctor #shoulderpain #shoulderworkout

The Dutch may be famous for their wooden shoes, but with an estimated four million people in the Netherlands suffering from foot problems, there is a growing need for therapeutic insoles. Caroline van Heijkamp, the CEO of T-Soles Insole Systems, created a solution for this problem. The T-Soles system is a personalized corrective insole designed through a 3D scan-and-print process. Heijkamp’s goal is to provide a better insole product that is also less expensive, so the adoption and use rate will be higher. “You can compare it to the number of people who wear glasses or contact lenses,” Heijkamp said. “Years ago, when glasses were costly, only the people who really needed them were willing to spend the money on glasses, but nowadays you can find glasses for a few Euros, and you see many more people wearing them. And you will see the same thing happen with insoles.” The 3D CT scan process of the T-Soles system allows for an accurate picture of the foot for precise calculations to ensure the resulting insole will do its job correctly. And, with current systems, Heijkamp pointed out they don’t fully take into account the shoe worn with the insoles. With the T-Soles system, the foot scan takes place with the client wearing the shoe. The T-Soles system is currently available in several regions, including Europe, the U.S., Canada, the Middle East and Asia. The software allowing the creation of therapeutic insoles for podiatrists should be available later this year.

丽莎老师讲机器人之3D打印成疫情下的救场奇兵欢迎收听丽莎老师讲机器人，想要孩子参加机器人竞赛、创意编程、创客竞赛的辅导，找丽莎老师！欢迎添加微信号：153 5359 2068，或搜索微信公众号：我最爱机器人。随着新冠疫情在世界的持续蔓延，多个国家已经出现了卫生医疗用品紧缺的问题，口罩、呼吸机以及用于检测的鼻拭子和咽拭子等必备用品已经供不应求。危急时刻，3D 打印技术已经成为一支拯救生命的奇兵。上周，一个由南佛罗里达大学、哈佛大学、斯坦福大学等机构组成的联盟宣布，他们已经与美国食品药品监督管理局（FDA）协商，制定了生产3D 打印测试样本的通用指南。同时，一家位于马萨诸塞州萨默维尔市的 3D 打印技术开发商和制造商Formlabs，将在俄亥俄州的工厂投入 250 台打印机，用于生产新冠病毒测试的鼻拭子。其实，3D打印在中国抗击新冠疫情中也贡献了力量。上海市一家科技企业运用3D打印技术，"打印"隔离病房驰援湖北。湖南一家集团用3D技术生产了一批医用护目镜驰援抗疫一线，它的重量只有普通护目镜的四分之三，同时还可根据个人面部数据实现私人化定制。3D打印技术的快速发展让人们不禁令人想问：神奇的3D打印，还有什么是"它"做不到的？3D打印并非新生事物，它的前身是快速原型制造，在上世纪80年代已经应用于工业设计和生产过程。现在通用的各3D打印技术，在当时基本上都已经开发出来了。反而3D打印这名字来得晚，直到1995年麻省理工学院的两名毕业生JimBredt和TimAnderson才第一次提出了"3D打印"的概念。3D打印技术虽然有好多种，但思路都是一样的，专业术语叫做"分布式材料制造"。举个大家都容易看懂的例子：一个人做一个柜子那是需要很长时间，想要加快的话那就得增加人手，但若人数固定的话还有什么办法加快制造速度呢？那就是做一堆积木，然后找个人将积木按照一定的形状堆积起来，再一粘就是了——前提是他能看懂说明书。与传统加工手段相比，3D打印又具有诸多独到之处。先说说用传统的冲压方式生产一个小型的车用零件拢共要用几步。首先，要有冲压用的模具。这个模具好比月饼印一样，决定了零件的形状。一般是用专门的模具钢制造，硬度高而且韧性好。模具分为上模和下模，上模安装在压力机上，可以以很高的速度压向下模。要加工的材料好比是做月饼的面团，被这么瞬间一压，就变成了模具的形状，之后用车床除去多余的部分，再进行一些研磨抛光一类的机械加工，零件就完成了。3D打印制作同样的零件又是怎么实现的呢？首先，在电脑上绘制好零件的设计图，然后将设计数据导入3D打印机，就可以开始制造零件了。以熔融沉积式3D打印机为例，事先准备好的低熔点线材如塑料，石蜡等经由3D打印机的喷嘴加热后喷出。在电脑的控制下，喷嘴在空间中由低到高逐层进行描画，最后形成零件，基本无须任何的后处理。首先，3D打印与计算机辅助设计（CAD）以及计算机辅助制造（CAM）密不可分，任何3D打印的零件都要从电脑设计图开始自己的生命历程。假如事先只有图纸，没有电脑可以直接利用的造型数据，也得重新在电脑中建立模型，绘制设计图。其次，3D打印是一种增材制造技术，也就是说与传统的车床机械加工一类减材制造技术不同，产品是由原料直接在空间中堆砌而成。可以把车床机械加工比作石雕，刀斧锤凿齐上阵，最终的作品比起最初的原石只少不多。另外一方面，3D打印好比泥塑，塑造形象的组成部分不断叠加，最终的作品比起最初的泥胚只多不少。有了这迥异于其他前辈的两大特色，3D打印能在机械制造技术的武林之中自立门户也就不足为奇了。3D打印技术诞生之后，人们为了解决移植器官来源有限的问题又发明了3D生物打印。因为在现有的医疗手段中，一个器官的获取要以另一个人器官的失去为前提，而主动或被动失去的器官数量又远远少于需要的器官。基于现有打印技术的3D生物打印机使用了生物材料，可以复合细胞、生长因子等活性成分，从而逐层构建活体组织。2009年底，Organovo公司制造出第一台3D生物打印机的原型机。研究者在供打印的液态材料中复合从骨髓、脂肪等组织中提取出的干细胞，或不同的活性因子，通过打印头将液体按照一定图案打印在接收平台上。打印头每打印过一层，就会提升一个层高的刻度，继而开始下一层图案的打印，从而逐渐实现人造组织的成型，这一过程类似于普通3D打印在工业应用中的模型制造。3D打印在其他生物领域的应用也很广。现在，医用钛合金人工骨，人工关节等已经广泛采用了3D打印技术。首先，通过CT或者核磁共振等成像技术获知患者身体的精确三维结构，然后将数据利用计算机进行处理并完成个性化设计。之后利用3D打印生成独一无二的专属人工骨，极大的提升了患者的治疗质量。2017年，美国西北大学的一个课题组利用3D打印技术将明胶打印成类似于卵巢组织的结构。然后将从小鼠体内提取出的卵泡和激素生成细胞植入这种明胶骨架，得到3D打印的人工卵巢组织。该人工卵巢在移植入摘除卵巢的小鼠体内后，表现出了功能健全卵巢的特性，可以正常排卵，在小鼠经过多代繁殖后也未见后代异常。虽然离人工制造组织或者器官这样的人类终极梦想仍然遥远，3D打印还是帮助我们迈出了开拓性的一步。

丽莎老师讲机器人之3D打印成疫情下的救场奇兵欢迎收听丽莎老师讲机器人，想要孩子参加机器人竞赛、创意编程、创客竞赛的辅导，找丽莎老师！欢迎添加微信号：153 5359 2068，或搜索微信公众号：我最爱机器人。随着新冠疫情在世界的持续蔓延，多个国家已经出现了卫生医疗用品紧缺的问题，口罩、呼吸机以及用于检测的鼻拭子和咽拭子等必备用品已经供不应求。危急时刻，3D 打印技术已经成为一支拯救生命的奇兵。上周，一个由南佛罗里达大学、哈佛大学、斯坦福大学等机构组成的联盟宣布，他们已经与美国食品药品监督管理局（FDA）协商，制定了生产3D 打印测试样本的通用指南。同时，一家位于马萨诸塞州萨默维尔市的 3D 打印技术开发商和制造商Formlabs，将在俄亥俄州的工厂投入 250 台打印机，用于生产新冠病毒测试的鼻拭子。其实，3D打印在中国抗击新冠疫情中也贡献了力量。上海市一家科技企业运用3D打印技术，"打印"隔离病房驰援湖北。湖南一家集团用3D技术生产了一批医用护目镜驰援抗疫一线，它的重量只有普通护目镜的四分之三，同时还可根据个人面部数据实现私人化定制。3D打印技术的快速发展让人们不禁令人想问：神奇的3D打印，还有什么是"它"做不到的？3D打印并非新生事物，它的前身是快速原型制造，在上世纪80年代已经应用于工业设计和生产过程。现在通用的各3D打印技术，在当时基本上都已经开发出来了。反而3D打印这名字来得晚，直到1995年麻省理工学院的两名毕业生JimBredt和TimAnderson才第一次提出了"3D打印"的概念。3D打印技术虽然有好多种，但思路都是一样的，专业术语叫做"分布式材料制造"。举个大家都容易看懂的例子：一个人做一个柜子那是需要很长时间，想要加快的话那就得增加人手，但若人数固定的话还有什么办法加快制造速度呢？那就是做一堆积木，然后找个人将积木按照一定的形状堆积起来，再一粘就是了——前提是他能看懂说明书。与传统加工手段相比，3D打印又具有诸多独到之处。先说说用传统的冲压方式生产一个小型的车用零件拢共要用几步。首先，要有冲压用的模具。这个模具好比月饼印一样，决定了零件的形状。一般是用专门的模具钢制造，硬度高而且韧性好。模具分为上模和下模，上模安装在压力机上，可以以很高的速度压向下模。要加工的材料好比是做月饼的面团，被这么瞬间一压，就变成了模具的形状，之后用车床除去多余的部分，再进行一些研磨抛光一类的机械加工，零件就完成了。3D打印制作同样的零件又是怎么实现的呢？首先，在电脑上绘制好零件的设计图，然后将设计数据导入3D打印机，就可以开始制造零件了。以熔融沉积式3D打印机为例，事先准备好的低熔点线材如塑料，石蜡等经由3D打印机的喷嘴加热后喷出。在电脑的控制下，喷嘴在空间中由低到高逐层进行描画，最后形成零件，基本无须任何的后处理。首先，3D打印与计算机辅助设计（CAD）以及计算机辅助制造（CAM）密不可分，任何3D打印的零件都要从电脑设计图开始自己的生命历程。假如事先只有图纸，没有电脑可以直接利用的造型数据，也得重新在电脑中建立模型，绘制设计图。其次，3D打印是一种增材制造技术，也就是说与传统的车床机械加工一类减材制造技术不同，产品是由原料直接在空间中堆砌而成。可以把车床机械加工比作石雕，刀斧锤凿齐上阵，最终的作品比起最初的原石只少不多。另外一方面，3D打印好比泥塑，塑造形象的组成部分不断叠加，最终的作品比起最初的泥胚只多不少。有了这迥异于其他前辈的两大特色，3D打印能在机械制造技术的武林之中自立门户也就不足为奇了。3D打印技术诞生之后，人们为了解决移植器官来源有限的问题又发明了3D生物打印。因为在现有的医疗手段中，一个器官的获取要以另一个人器官的失去为前提，而主动或被动失去的器官数量又远远少于需要的器官。基于现有打印技术的3D生物打印机使用了生物材料，可以复合细胞、生长因子等活性成分，从而逐层构建活体组织。2009年底，Organovo公司制造出第一台3D生物打印机的原型机。研究者在供打印的液态材料中复合从骨髓、脂肪等组织中提取出的干细胞，或不同的活性因子，通过打印头将液体按照一定图案打印在接收平台上。打印头每打印过一层，就会提升一个层高的刻度，继而开始下一层图案的打印，从而逐渐实现人造组织的成型，这一过程类似于普通3D打印在工业应用中的模型制造。3D打印在其他生物领域的应用也很广。现在，医用钛合金人工骨，人工关节等已经广泛采用了3D打印技术。首先，通过CT或者核磁共振等成像技术获知患者身体的精确三维结构，然后将数据利用计算机进行处理并完成个性化设计。之后利用3D打印生成独一无二的专属人工骨，极大的提升了患者的治疗质量。2017年，美国西北大学的一个课题组利用3D打印技术将明胶打印成类似于卵巢组织的结构。然后将从小鼠体内提取出的卵泡和激素生成细胞植入这种明胶骨架，得到3D打印的人工卵巢组织。该人工卵巢在移植入摘除卵巢的小鼠体内后，表现出了功能健全卵巢的特性，可以正常排卵，在小鼠经过多代繁殖后也未见后代异常。虽然离人工制造组织或者器官这样的人类终极梦想仍然遥远，3D打印还是帮助我们迈出了开拓性的一步。

Sleep apnea, or when patients temporarily stop breathing during sleep, can be cured with corrective jaw surgery. Dr. Ravi Agarwal explains how it works and what to expect during recovery.   TRANSCRIPT Intro: MedStar Washington Hospital Center presents Medical Intel where our healthcare team shares health and wellness insights and gives you the inside story on advances in medicine. Host: Thanks for joining us today. We’re speaking with Dr. Ravi Agarwal, an oral and maxillofacial surgeon and the residency program director for the Department of Oral and Maxillofacial Surgery at MedStar Washington Hospital Center. Welcome, Dr. Agarwal. Dr. Ravi Agarwal: Thanks for having me here today. Host: Today we’re discussing corrective jaw surgery for obstructive sleep apnea and breathing issues. Dr. Agarwal, how is the jaw related to breathing conditions such as obstructive sleep apnea? Dr. Agarwal: Great question! Most people do not realize that the top jaw and the bottom jaw do more than just allow us to eat and chew. These bones also serve as attachments to a lot of muscles around the face and neck, which support both the tongue and the airway. For example, patients who have an obstructed upper jaw may also have a narrowed nose, making breathing through their nose more difficult. Or, patients with small lower jaws will have a smaller area for their tongue to sit in and have more tongue obstruction while they’re sleeping, leading to obstructive sleep apnea. Host: Could you describe your patient population for this type of corrective jaw surgery? Dr. Agarwal: There are two different populations that we see for corrective jaw surgery. The first population are those patients who have jaw deformities, like underbites, deep bites, jaw asymmetries, or usually working with an orthodontist for braces and ultimately would need jaw surgery to correct the alignment of their jaws. These patients often have issues like difficulty with chewing, breathing problems, speech problems, jaw pain, and even concerns about their appearance. All of these complaints we are able to adjust with corrective jaw surgery. As you can imagine, a significant portion of these patients are teenagers, young adults - but we are starting to see a lot of adults who wish to undergo the same procedures. The second population that we see are patients with obstructive sleep apnea or breathing issues related to sleeping. They have a diagnosis of sleep apnea and they acknowledge that they stop breathing at night and have a lot of associated problems with that, such as excessive daytime fatigue, sleepiness, unable to perform their jobs, have fallen asleep while driving. Most of these patients are working with a medical provider. They maybe have tried CPAP, the mask that they wear at nighttime to help them breath. But many of them find this problematic and look for a surgical solution. As I mentioned, the relationship of the jaws to the airway, corrective jaw surgery - those same procedures can be used to advance the jaws, which would help open up the airway. Host: When we’re thinking about these two different patient populations, how do you decide whether jaw surgery is appropriate for them? Dr. Agarwal: There’s a lot of factors that we look at when we evaluate a patient. Most often, if there’s an anatomic abnormality that we can detect, they may be a good candidate for jaw surgery. We determine that by 1) a clinical examination - looking at their mouth, looking at their teeth, looking at the shape of their face, the shapes of the bones. We also utilize x-rays, 3 dimensional x-rays, to look at the size of their airways, the dimensions of the airways, and the dimensions of their jaws. Based on their problems, and what we see clinically, we can discuss with the patient if they’re a candidate for corrective jaw surgery. Host: Could you describe how these types of surgeries are performed? Dr. Agarwal: Corrective jaw surgery is a surgery that’s done all from inside the mouth. A significant number of patients will probably be working with an orthodontist, so they may have braces - which we actually use during the surgery. What we do is we make incisions in the gums around the jaws, we access the bones, and we use specialized instruments to make cuts in the bone. Once these bones are split, we’re able to reposition them in a new predicted position using splints that we had made before the surgery. The bones are then stabilized with small plates and screws, which you won’t feel or know they’re there and we then use dissolvable stitches to close the gums. The surgery is done under general anesthesia in the operating room and most patients will have an overnight stay in the hospital. Host: Is there anything that patients have to do to prepare for surgery, perhaps the day of or getting any tests beforehand? Dr. Agarwal: In general, patients who are getting corrective jaw surgery are undergoing a preoperative medical clearance, very similar to other major surgeries that are happening. Preparation is different, depending on what the patient’s desires are. Someone who wants to straighten their teeth and straighten their bite with the corrective jaw surgery to help their breathing, may be in braces and have undergone orthodontics for one to two years prior to even having the surgery. When they’re in that situation, we work closely with the orthodontist to make sure everything is done correctly prior to taking them to the operating room for the surgery. Host: How long does recovery typically take and are there any restrictions for eating, talking or exercising afterward? Dr. Agarwal: The recovery for corrective jaw surgery starts immediately after surgery. Usually there’s an overnight stay in the hospital, where we’re monitoring them to make sure they’re recovering well. But once they get home, there are a few restrictions. Most patients will need about two weeks at home due to the amount of swelling they’ll have. During those two weeks, we ask that they do not do any heavy lifting or exercises. But they can do daily activities such as washing the dishes, cleaning, and housework. After two weeks, most patients can start doing light exercise. But generally, we wait to six weeks before they can perform full physical activities. In terms of their diet, obviously we’re doing a lot of work inside the mouth and the bones of the jaws, and so patients will need to be on a full liquid diet for six weeks. Host: What about teenagers who are playing sports? How long do they have to sit out? Dr. Agarwal: For most sports we ask them to sit out for about six weeks. But, after two to three weeks, they definitely will be able to do light physical activities such as jogging and light weights. After six weeks they can return to full sports. The only caveat to that is patients or teenagers who play sports where facial injuries are common. In those situations, I may ask that they refrain from those sports for three months, because at that point the bones have really matured and there’s no further risk to them. Host: Are these patients sitting with their jaws wired shut? Dr. Agarwal: Nope. Patients jaws are not generally wired shut after this type of procedure. Using the techniques we utilize today and the plates and screws that we use, we’re able to not have to wire a patient’s jaw shut. Host: Obviously there are some things that you can’t control - so, the way your jaw is built, your anatomy. But for something like obstructive sleep apnea, is there anything that patients can do to reduce their risk for needing surgery or that they can do to improve their condition otherwise? Dr. Agarwal: You know, obstructive sleep apnea is definitely a multifactorial medical disease. A vast majority of patients, it may be related to weight, size - so exercise, weight loss would be some of the biggest things that could help reduce their chance of developing or having obstructive sleep apnea. There are non-surgical treatments for obstructive sleep apnea. The biggest one is CPAP. But for patients who don’t tolerate CPAP, there are options for oral appliances. These are devices that are generally made by dental or dental providers that would fit into their mouth and, essentially, shift their bottom jaw forward while they’re sleeping at night. By shifting the bottom jaw forward, it opens up the airway and reduces the obstructive sleep apnea. Host: Could you describe some of the benefits of this type of surgery? Dr. Agarwal: There are a lot of benefits to corrective jaw surgery. Obviously, getting the teeth and the jaws in a better position, patients are able to chew better, chew more efficiently, some of their speech problems may be improved. If they have concerns about pain, having the jaws in a better position can reduce their pain. And obviously, like we discussed, breathing. There are other nice results that come from jaw surgery such as an improved smile and an improved facial appearance. One of the things we keep in mind when we’re doing jaw surgeries - how to improve their facial harmony. So, patients often have more confidence about themselves and appreciate the way they appear. However, with all the benefits, there are side effects to every surgery that we perform. Outside of the recovery that we discussed earlier, one of the side effects of corrective jaw surgery is that patients may have some numbness of their lips, teeth and gums, as when we are working in these bones, the sensory nerves are in that region. After one year though, a vast majority of patients have no issues related to the numbness. Host: Could you share a treatment success story from your practice? Dr. Agarwal: As you can imagine, there are a lot of treatment successes when you do corrective jaw surgery to help someone breath. One that comes to my mind was a gentleman we took care of who came to his consultation with his family and his kids. And, the patient was trying to explain to me about how he struggled with sleeping and snoring. And then his young child just drops everything and says, “Daddy snores really loud!” And the dad just looks at me and says, “See? I really have a problem with sleeping.” And, you know, a few weeks after surgery, I see him for his post-op and I said, “How are those kids doing with the sleeping?” He says, “It’s peaceful in the house. Everybody’s so happy that I can breathe and I’m not snoring anymore.” And these are the things that really, really...why we enjoy doing this procedure because it really can be life changing, both from a functional standpoint but even from a family standpoint. Host: What are some of those other issues that you can help correct when you do these types of surgeries, either for the patient or their quality of life at home? Dr. Agarwal: In the teenage years, if there’s a jaw deformity, there are a lot of psychosocial components - that a patient may have trouble at school with their appearance or may have lack of self-confidence. And, corrective jaw surgery, I’ve seen, has changed the way a patient will present themselves afterwards. They’re excited, they have a lot more confidence, they’re doing better at school. As well as those who are concerned about being able to chew and chew efficiently and get a lot of jaw fatigue. By getting the teeth and jaws in a better alignment, those problems will go away. Host: Why is MedStar Washington Hospital Center the best place to receive corrective jaw surgery? Dr. Agarwal: Our hospital is one of the rare institutions in the region that have a dedicated oral and maxillofacial surgeon working. We are one of the busiest centers in the region when it comes to corrective jaw surgery. You will not find a center in the state of Virginia or Maryland that does more jaw surgery than we do. With that comes experience. We’ve seen a lot of different types of deformities, we’ve really advanced our skills in specializing in corrective jaw surgery. One of the technologies we use is taking 3D CT scans and performing virtual planning, working with a third party provider, for us to virtually plan your surgery before you’re in the operating room so that we can pick up on, ‘are there are going to be any issues and are we going to be happy with the outcome that we’re providing.’ The other reason to consider choosing our team is that we’re in a large hospital that has access to every specialty and we take care of some of the most complex patients in the region. So, having a team approach to all surgeries is really beneficial to outcomes. Host: Thanks for joining us today, Dr. Agarwal. Dr. Agarwal: Thank you for having me. Conclusion: Thanks for listening to Medical Intel with MedStar Washington Hospital Center. Find more podcasts from our healthcare team by visiting medstarwashington.org/podcast or subscribing in iTunes or iHeartRadio.

Plastic surgeons having been performing chin implants for many decades. But in the era of 3D imaging and 3D printing, we are on the verge of having custom implants made precisely for your facial bones. Listen in as we discuss this new treatment. We also discuss a new problem associated with breast implants - a small number of lymphomas have developed in women with textured breast implants.

Dr. Omid Termechi Dr. Omid Termechi is a leading practitioner, educator and innovator in implant dentistry. With offices in Astoria and Long Island, he provides the full range of general, implant and cosmetic dentistry services. Both offices are equipped with state-of-the-art dental chairs and technology such as low-radiation X-Rays and 3D CT scanners. Using minimally invasive pain-free procedures, Dr. Termechi restores smiles and works closely with his patients to help them maintain their dental health.   Dr. Termechi received his D.D.S from the New York University College of Dentistry in 1998. He completed General Practice Residency programs at the Interfaith Medical Center and at the Kingsbrook Jewish Medical Center, both in Brooklyn, NY. He also completed a two-year, full-time Fellowship in Oral Implantology and Biomaterials at the Brookdale Hospital Medical Center in Brooklyn, NY.   Dr. Termechi is an Attending at the Brookdale Hospital Medical Center, Department of Oral Implantology and Biomaterials.  He is an Assistant Professor at the Implant Department of New York University College of Dentistry. He was an ADA CELL Seminar Series Lecturer from 2005 to 2015.   Dr. Termechi has achieved an Associate Fellowship status in The American Academy of Implant Dentistry (AAID) as well as Fellowship and a Diplomate status in the International Congress of Oral Implantology (ICOI).   In 2017, Dr. Termechi founded the Dental Implant Surgical Seminar (DISS) in partnership with Universidad Francisco Marroquin (UFM) School of Dentistry in Guatemala. DISS helps general and restorative dentists expand their private practice into implant surgery.   http://www.dentalimplantsurgicalseminar.com   Dr. Cory Glenn Dr. Glenn graduated from University of Tennessee Health Science Center College of Dentistry. Following graduation, he completed the Lutheran Medical Center’s advanced program in general dentistry at the UT Memphis branch. He is a graduate of the Georgia Maxi Course in Implant Dentistry, the American Orthodontic Society’s Comprehensive Ortho Program, and is credentialed as an Associate Fellow in the American Academy of Implant Dentistry.   He has served as the CE director for the TN AGD and as president and CE director of the Middle TN Dental Study Club. Dr. Glenn is also one of the founders of Blue Sky Bio Academy, the online learning center. For several years, Dr. Glenn ran a private practice in Winchester, TN where he performed all disciplines of dentistry with a particular focus on utilizing technology and innovative techniques to provide treatment in an efficient and cost-effective manner.   Dr. Glenn is the VP of Technology for Blue Sky Bio, the leading innovator in implant technology, where he focuses on product and software development as well as clinical customer support.  He speaks extensively about CAD/CAM, cone beam technology, guided dental implants, dental photography, digital smile design, complete dentures, and complex full-mouth rehabilitation.   http://www.blueskybio.academy 

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05/07/2012 | 3D CT - When is it really needed? Pt. 2

04/30/2012 | 3D CT-when is it really needed?Pt 1

10/10/2011 | 3D CT Imaging: From Theory to Practice (How We Do It)

Objective: To evaluate maxillary growth following in utero repair of surgically created cleft lip and alveolar (CLA)-like defects by means of three-dimensional (3D) computer tomographic (CT) cephalometric analysis in the mid-gestational sheep model. Methods: In 12 sheep fetuses a unilateral CLA-like defect was created in utero (untreated control group: 4 fetuses). Four different bone grafts were used for the alveolar defect closure. After euthanasia, CT scans of the skulls of the fetuses, 3D re-constructions, and a 3D-CT cephalometric analysis were performed. Results: The comparisons between the operated and nonoperated skull sides as well as of the maxillary asymmetry among the experimental groups revealed no statistically significant differences of the 12 variables used. Conclusions: None of the surgical approaches used for the in utero correction of CLA-like defects seem to affect significantly postsurgical maxillary growth; however, when bone graft healing takes place, a tendency for almost normal maxillary growth can be observed. Copyright (c) 2006 S. Karger AG, Basel.