The Utilization of Three-Dimensional Technology for an Accurate Diagnosis and Precise Treatment Planning in the Field of Orthodontics

The first important step in orthodontic treatment is an accurate diagnosis and precise treatment planning to correct the malocclusion. This process entails a proper examination and understanding of the nature of malocclusion and the anomaly of the underlying structures. The emergence of three dimensional (3D) technology has transformed the field of orthodontics. The present article aims to take into account some of the applications of 3D technology in the field of orthodontics.

P078 SURGICAL PLANNING WITH 3D TECHNOLOGY UN PATIENT WITH MORGAGNI HERNIA AND INGUINAL HERNIA

Aim The use of 3D technology is increasingly used for surgical planning in cases of complex surgery. In the case of the abdominal wall, its use is not very widespread. In this video we present the case of a patient with inguinal hernia and Morgagni hernia in which 3D planning provided us with multiple benefits Material and Methods 71-year-old patient awaiting intervention for right inguinal hernia, presenting progressive dyspnea, abdominal pain and vomiting. A thoraco-abdominal CT scan was performed, which reported a Morgagni hernia containing the transverse colon and omentum. Due to 3D planning, we were able to obtain the abdominal and hernial sac volumes, evaluate the hernial orifice and its relationship with the adjacent structures. Results Laparoscopic repair of the Morgagni hernia was performed by reducing the hernial content, placement of visceral contact mesh fixed with resorbable tackers. In the same surgical act, an inguinal hernioplasty was performed via TAPP. The postoperative period was correct, without complications, and the patient was discharged after 3 days. Two years after the intervention, the patient remains asymptomatic. Conclusions The use of 3D technology for surgical planning facilitates the repair of complex hernias, helping us to assess the surgical indication, hernial volumes and hernial content. Good surgical planning facilitates the performance of the intervention through minimally invasive surgery, in this case two hernias were repaired in the same surgical procedure and with the same incisions, which facilitated the recovery of the patient.

P009 BEYOND TANAKA INDEX: PREOPERATIVE ASSESSMENT WITH 3D TECHNOLOGY IN LARGE HERNIAS WITH LOSS OF DOMAIN

Aim “Demonstrate step by step the planning that was carried out using 3D technology in pre-surgical assessment for complex hernia.” Material and Methods “57-year-old female, surgical record of laparoscopic uterine myomectomy 20 years ago, has an eventration with loss of domain on the left flank and a giant uterine myoma. A multidisciplinary assessment was carried out for surgical decision, myomectomy was rejected. Presurgical preparation was decided with progressive pneumoperitoneum (PPP) technique (1 week before surgery) associated with botulinum toxin (4 weeks before surgery). The patient specific volumes of the abdominal cavity and the eventration were measured with 3D technology resulting in a volume ratio (VR) of 34% pre-PPP, VR post-PPP and botulinum toxin was 9,8%. We compared these results to Tanaka index and we found a significant difference between the two techniques.” Results “During surgical intervention, multiple tumors were evidenced in the hernia content, distal ileum, cecum and omentum, peroperative pathological anatomy reported leiomyomas. An ileocecal resection+Omentectomy+TAR was performed. Patient was discharged on the 5th day without incidents. A definitive diagnosis of Diffuse Peritoneal Leiomyomatosis was made.” Conclusions “3D technology might represent a better tool to calculate intraabdominal and hernia volume, providing greater safety for the patient and the surgeon to avoid compartment syndrome. We found a significant difference between volumes measurements between Tanaka index and 3D technology. 3D technology gives us an unprecedented perspective for surgical planning in complex abdominal wall surgery The use of PPP and botulinum toxin is a safe and reproducible technique for hernia with loss of domain.”

P124 RECURRENCE OF SPIEGEL'S HERNIA POST-IPOM IN AN ELDERLY PATIENT, HOW TO DEAL WITH IT?

Aim To demonstrate how minimally invasive surgery of the abdominal wall allows us to rescue patients with recurrent hernias previously treated with other laparoscopic techniques. Material and Methods An 83-year-old woman with moderate comorbidities, ASA III and obese was operated for bilateral Spiegel’s hernia by laparoscopic IPOM. 21 months later, a symptomatic recurrence of the right hernia was diagnosed. The physical examination was difficult due to obesity and the CT scan showed a right hernia recurrence. This CT scan was used for 3D Planning of the surgery, showing the right Spiegel’s hernia with 5-6 cm of diameter with a bowel loop inside. Results Given the age of the patient and comorbidities, it was decided to perform a laparoscopic repair using the IPOM + technique, closing the defect with barbed suture and placing a wide visceral contact mesh fixed with absorbable tackers. She was discharged 24 hours after surgery without complications, providing the patient with the benefits of minimally invasive surgery. Conclusions Laparoscopic surgery allows us to treat hernia recurrences even in cases previously treated by minimally invasive approach. An individualized treatment adjusted to the age and characteristics of each patient should be carried out. 3D Technology and reconstruction is very useful for pre-surgical Planning, allowing a personalized pre-operative assessment of each patient. The use of 3D Technology is a great teaching tool with great potential for surgical planning.

Failure Analysis Techniques for 3-D Technology

Presentation slides from the ISTFA 2021 tutorial, “[Failure Analysis Techniques for 3D Technology].”

Design of 3D Modeling Face Image Library in Multimedia Film and Television

The development of 3D modeling technology has promoted the development of the multimedia film and television industry. This article is aimed at studying the design of 3D modeling facial image library in multimedia film and television, at providing a more comprehensive facial image library for the multimedia film and television industry, at breaking the shackles of the traditional film and television industry with 3D technology, and at continuously surpassing traditional film and television media forms. This article deeply explores the background development of multimedia film and television and the characteristics of the development of new media. Starting from 3D technology, it extracts facial features of characters, transforms image data through deep autoencoders, and uses local binarization mode to perform the original facial image is subjected to texture feature extraction. In this paper, a number of experimental subjects were selected, and the subjects were photographed from the left, front, and right from multiple angles. Through the pinhole camera projection imaging process, the internal and external parameters of the camera were adjusted. In the process of 3D image construction, the image is first selected for feature detection, then the corresponding vector information and geometric conditions are matched to construct a 3D matrix, and the facial structure image is obtained by triangulation. This article compares the 3D production software on the market and selects the Maya platform suitable for building this system. The global constraint information is obtained by training some sample images. When searching the test image, find the appropriate feature point position according to the structural matching degree of the local image. When each search is completed, the global information will be used for constraint, so as to output reasonable feature information. The average residual range of the human face image constructed in this paper is 0.25-0.45, and the maximum residual error does not exceed 4.0. The experimental method in this paper has good stability and robustness. Using the COM transmission model can make experimenters not need to think too much about the underlying details. This face animation-driven simulation scheme can achieve more vivid facial expressions.