Three-Dimensional Custom-Made Surgical Guides in Facial Feminization Surgery: Prospective Study on Safety and Accuracy

2021 ◽  
Author(s):  
Pierre Tawa ◽  
Nicolas Brault ◽  
Vlad Luca-Pozner ◽  
Laurent Ganry ◽  
Ghassen Chebbi ◽  
...  
Keyword(s):  
Maxillofacial Surgery ◽  
Three Dimensional ◽  
Cerebrospinal Fluid Leak ◽  
Mandibular Angle ◽  
Virtual Planning ◽  
Surgical Guides ◽  
Sinus Wall ◽  
Custom Made ◽  
Cutting Guides ◽  
Fluid Leak

Abstract Background Facial feminization surgery (FFS) includes several osseous modifications of the forehead, mandible and chin, procedures which require precision in order to provide the patient with a satisfactory result. Mispositioned osteotomies can lead to serious complications and bad aesthetic outcomes. Surgical cutting guides are commonly used in plastic and maxillofacial surgery to improve safety and accuracy. Yet, there is no report in the literature on the clinical application of cutting guides in FFS. Objectives The aim of this paper is to assess the safety and accuracy of custom surgical cutting guides in FFS procedures. Methods A prospective follow-up of forty-five patients regarding FFS with preoperative virtual planning and 3D custom-made surgical guides for anterior frontal sinus wall setback, mandibular angle reduction and/or osseous genioplasty was conducted. Accuracy (superimposing preoperative data on postoperative data by global registration with a 1 mm margin of error), safety (intradural intrusion for the forehead procedures and injury of the infra alveolar nerve for chin and mandibular angles) and patient satisfaction were assessed. Results A total of 133 procedures were documented. There was no cerebrospinal fluid leak on the forehead procedures nor any infra alveolar nerve or tooth root injury on both chin and mandibular angle operations (safety, 100%). Accuracy was 90.80 % on the forehead (n=25), 85.72% on the mandibular angles (n=44) and 96.20% on the chin (n=26). An overall satisfaction of 94.40% was recorded. Conclusions Custom-made surgical cutting guides could be a safe and accurate tool for forehead, mandibular angles and chin procedures for FFS.

Guided surgery with 3D printed device: a case report

2020 ◽  
Author(s):  
Michelle Carvalho de Sales ◽  
Rafael Maluza Flores ◽  
Julianny da Silva Guimaraes ◽  
Gustavo Vargas da Silva Salomao ◽  
Tamara Kerber Tedesco ◽  
...  
Keyword(s):  
Operating Time ◽  
Three Dimensional ◽  
Conventional Technique ◽  
Cervical Region ◽  
Mean Deviation ◽  
Apical Region ◽  
Virtual Planning ◽  
Surgical Guide ◽  
Surgical Guides ◽  
High Level

Dental surgeons need in-depth knowledge of the bone tissue status and gingival morphology of atrophic maxillae. The aim of this study is to describe preoperative virtual planning of placement of five implants and to compare the plan with the actual surgical results. Three-dimensional planning of rehabilitation using software programs enables surgical guides to be specially designed for the implant site and manufactured using 3D printing. A patient with five teeth missing was selected for this study. The patient’s maxillary region was scanned with CBCT and a cast model was produced. After virtual planning using ImplantViewer, five implants were placed using a printed surgical guide. Two weeks after the surgical procedure, the patient underwent another CBCT scan of the maxilla. Statistically significant differences were detected between the virtually planned positions and the actual positions of the implants, with a mean deviation of 0.36 mm in the cervical region and 0.7 mm in the apical region. The surgical technique used enables more accurate procedures when compared to the conventional technique. Implants can be better positioned, with a high level of predictability, reducing both operating time and patient discomfort.

scholarly journals Surgical benefit of mandibular morphometric analysis: A new tool to standardize mandibular reconstruction

PLoS ONE ◽  
2020 ◽  
Vol 15 (11) ◽  
pp. e0240558
Author(s):  
Alice Prevost ◽  
Franck Delanoe ◽  
Zoé Cavallier ◽  
Samuel Muller ◽  
Raphael Lopez ◽  
...  
Keyword(s):  
Morphometric Analysis ◽  
Descriptive Analysis ◽  
Donor Site ◽  
Three Dimensional ◽  
Free Flaps ◽  
Reference Points ◽  
Mandibular Reconstruction ◽  
Gonial Angle ◽  
Custom Made ◽  
Cutting Guides

Purpose The gold-standard for reconstruction of large mandibular defects is the use of free flaps of vascularized autologous bone with the fibula as the preferred donor site. The use of "custom cutting guides" for this indication is becoming increasingly prevalent. But cost of the procedure averages around 2,500 dollars per patient excluding treatment and entails selection criteria. We think it is possible to standardize mandibular reconstructions from an anatomical mean. The objective of this study was to perform a mandibular morphometric analysis in order to obtain a set of "mean" measurements, which can be used by all surgeons interested in mandibular reconstruction. Methods We performed a morphometric analysis consisting of three-dimensional mandibular reconstructions of 30 men and 30 women. Several reference points were set and defined to evaluate specific lengths and angles of interest. We conducted an intra and inter-sexual descriptive analysis of measurements obtained. Results We did not identify any major intra-sexual differences within each group. The gonial angle is more open in women and the measurements characterizing the basilar contour are more prominent in men. We did not identify any differences in alveolar region parameters. Conclusion The results of this study constitute a morphological tool for surgeons, from bone graft to free flap. These results also confirm us that the use of «custom cutting guides» for mandibular reconstruction may be excessive. It is pertinent to examine the value of "custom made" mandibular reconstructions since the differences observed are of the order of millimeters.

scholarly journals Three-Dimensional Corrective Osteotomy for Malunited Diaphyseal Forearm Fractures Using Custom-Made Surgical Guides Based on Computer Simulation

2012 ◽  
Vol 2 (4) ◽  
pp. e24 ◽  
Author(s):  
Junichi Miyake ◽  
Tsuyoshi Murase ◽  
Kunihiro Oka ◽  
Hisao Moritomo ◽  
Kazuomi Sugamoto ◽  
...  
Keyword(s):  
Computer Simulation ◽  
Corrective Osteotomy ◽  
Three Dimensional ◽  
Forearm Fractures ◽  
Surgical Guides ◽  
Custom Made

scholarly journals Future dental device- 3-dimensional printing approach in dentistry

2021 ◽  
Vol 7 (2) ◽  
pp. 37-47
Author(s):  
Deepak Grover ◽  
Navneet Kaur ◽  
Gurpreet Kaur
Keyword(s):  
Maxillofacial Surgery ◽  
Three Dimensional ◽  
Cost Effective ◽  
Physical Models ◽  
Advanced Technology ◽  
Oral And Maxillofacial Surgery ◽  
3 Dimensional ◽  
Ridge Augmentation ◽  
Surgical Guides ◽  
Dimensional Printing

The three-dimensional printing has been used since very long ago in the field of medicine as well as in dentistry. The evolution of 3-dimensional imaging and modelling in dentistry is progressing towards a more efficient and cost-effective workflow using state-of-the-art technology. The practicability of this technique is expanding in several dental fields such as prosthodontics, oral and maxillofacial surgery and prosthesis, and production of surgical guides or physical models in dental implant treatment. The key of success in this technique depends on the usage of various materials such as, metal, resin, plastic etc. which is most commonly used in dentistry. With introduction of this recent advanced technology, it is used in various surgical procedures such as ridge augmentation, sinus lift and guided implant surgery, implant fixtures, preparation of customized scaffold with or without stem cell therapy, education models as well as in drug delivery technology. The 3-dimensional printing technology is becoming more economical technique and able to produce replica of dental models with a high resolution and accuracy.

Simulation of Hip Operations and Design of Custom-made Endoprostheses using Virtual Reality Techniques

2001 ◽  
Vol 40 (02) ◽  
pp. 74-77 ◽  
Author(s):  
J. Ehrhardt ◽  
W. Plötz ◽  
S. J. Pöppl ◽  
H. Handels
Keyword(s):  
Virtual Reality ◽  
Bone Tumor ◽  
Planning Process ◽  
3D Visualization ◽  
Three Dimensional ◽  
Tumor Surgery ◽  
Endoprosthetic Reconstruction ◽  
Virtual Planning ◽  
Custom Made ◽  
Bone Structures

AbstractIn this paper a system for the virtual planning of hip operations with endoprosthetic reconstruction and its application in bone tumor surgery is described. The system enables the simulation of the operation and the construction of a custom-made implant depending on the chosen resection planes and the patient’s anatomy. During the planning process integrated virtual reality techniques facilitate the interaction with the three-dimensional (3D) medical objects. Stereo viewing improves the perception of the 3D nature of bone structures and tumors. In comparison to conventional planning procedures, different operation strategies and their influence on the geometry of the custom-made endoprosthesis can be easily compared. Furthermore, the combination of multi-modal image information (CT and MR) enables an accurate 3D visualization of the bone tumor within the bone.

scholarly journals Three-Dimensional Corrective Osteotomy for Cubitus Varus Deformity with Use of Custom-Made Surgical Guides

2014 ◽  
Vol 4 (1) ◽  
pp. e6 ◽  
Author(s):  
Tsuyoshi Murase ◽  
Yukari Takeyasu ◽  
Kunihiro Oka ◽  
Toshiyuki Kataoka ◽  
Hiroyuki Tanaka ◽  
...  
Keyword(s):  
Corrective Osteotomy ◽  
Three Dimensional ◽  
Varus Deformity ◽  
Cubitus Varus ◽  
Surgical Guides ◽  
Custom Made

scholarly journals Point-of-care manufacturing: a single university hospital’s initial experience

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Jose Antonio Calvo-Haro ◽  
Javier Pascau ◽  
José Manuel Asencio-Pascual ◽  
Felipe Calvo-Manuel ◽  
Maria José Cancho-Gil ◽  
...  
Keyword(s):  
3D Printing ◽  
Point Of Care ◽  
Maxillofacial Surgery ◽  
University Hospital ◽  
Manufacturing Companies ◽  
Printing Technology ◽  
Medical Specialties ◽  
3D Printing Technology ◽  
Surgical Guides ◽  
Custom Made

Abstract Background The integration of 3D printing technology in hospitals is evolving toward production models such as point-of-care manufacturing. This study aims to present the results of the integration of 3D printing technology in a manufacturing university hospital. Methods Observational, descriptive, retrospective, and monocentric study of 907 instances of 3D printing from November 2015 to March 2020. Variables such as product type, utility, time, or manufacturing materials were analyzed. Results Orthopedic Surgery and Traumatology, Oral and Maxillofacial Surgery, and Gynecology and Obstetrics are the medical specialties that have manufactured the largest number of processes. Working and printing time, as well as the amount of printing material, is different for different types of products and input data. The most common printing material was polylactic acid, although biocompatible resin was introduced to produce surgical guides. In addition, the hospital has worked on the co-design of custom-made implants with manufacturing companies and has also participated in tissue bio-printing projects. Conclusions The integration of 3D printing in a university hospital allows identifying the conceptual evolution to “point-of-care manufacturing.”

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