Asymmetry in forensic three-dimensional facial reconstruction: An assessment of facial asymmetry in adult First Nations Nova Scotian facial soft tissue depth data

2013 ◽  
Vol 46 (3) ◽  
pp. 141-165
Author(s):  
John Alexander Barra MacNeil ◽  
Tanya R. Peckmann ◽  
Michelle Mussett
Keyword(s):  
Soft Tissue ◽  
First Nations ◽  
Three Dimensional ◽  
Facial Asymmetry ◽  
Facial Reconstruction ◽  
Facial Soft Tissue ◽  
Depth Data ◽  
Nova Scotian

The development and testing of Thai facial soft tissue thickness data in three-dimensional computerized forensic facial reconstruction

2021 ◽  
pp. 002580242110576
Author(s):  
Pagorn Navic ◽  
Patison Palee ◽  
Sangsom Prapayasatok ◽  
Sukon Prasitwattanaseree ◽  
Apichat Sinthubua ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Computer Animation ◽  
Three Dimensional ◽  
Facial Reconstruction ◽  
Forensic Investigation ◽  
Tissue Thickness ◽  
Facial Soft Tissue ◽  
Thai Population ◽  
Soft Tissue Thickness ◽  
Virtual Face

Forensic facial reconstruction is a useful tool to assist the public in recognizing human remains, leading to positive forensic investigation outcomes. To reproduce a virtual face, facial soft tissue thickness is one of the major guidelines to reach the accuracy and reliability for three-dimensional computerized facial reconstruction, a method that is making a significant contribution to improving forensic investigation and identification. This study aimed to develop a facial soft tissue thickness dataset for a Thai population, and test its reliability in the context of facial reconstruction. Three-dimensional facial reconstruction was conducted on four skulls (2 males and 2 females, with ages ranging between 51 to 60 years). Two main tools of three-dimensional computer animation and modeling software—Blender and Autodesk Maya—were used to rebuild the three-dimensional virtual face. The three-dimensional coordinate ( x, y, z) cutaneous landmarks on the mesh templates were aligned homologous to the facial soft tissue thickness markers on the three-dimensional skull model. The final three-dimensional virtual face was compared to the target frontal photograph using face pool comparison. Four three-dimensional virtual faces were matched at low to moderate levels, ranging from 30% to 70% accuracy. These results demonstrate that the facial soft tissue thickness database of a Thai population applied in this study could be useful for three-dimensional computerized facial reconstruction purposes.

scholarly journals Three-dimensional symmetry and parallelism of the skeletal and soft-tissue poria in patients with facial asymmetry

2014 ◽  
Vol 44 (2) ◽  
pp. 62 ◽  
Author(s):  
Min-Gun Kim ◽  
Jin-Woo Lee ◽  
Kyung-Suk Cha ◽  
Dong-Hwa Chung ◽  
Sang-Min Lee
Keyword(s):  
Soft Tissue ◽  
Three Dimensional ◽  
Facial Asymmetry

Three-Dimensional Analysis Techniques—Part 1: Three-Dimensional Soft-Tissue Analysis of 24 Adult Cleft Palate Patients following Le Fort I Maxillary Advancement: A Preliminary Report

1997 ◽  
Vol 34 (1) ◽  
pp. 36-45 ◽  
Author(s):  
Andrew M. Mccance ◽  
James P. Moss ◽  
W. Rick Fright ◽  
Alf D. Linney ◽  
David R. James
Keyword(s):  
Soft Tissue ◽  
Laser Scanning ◽  
Three Dimensional ◽  
Tissue Analysis ◽  
Facial Soft Tissue ◽  
Le Fort ◽  
Analysis Techniques ◽  
Tissue Changes ◽  
Soft Tissue Changes ◽  
Le Fort I

The three-dimensional, facial soft-tissue changes of 24 patients with various cleft types following transpalatal Le Fort I osteotomy were measured using laser scanning techniques, radial measurements, and a color millimetric scale. There was a varying degree of midface retrusion in the different cleft groups, and a very similar pattern of retrusion over the nasal complex. Each group of patients showed a varying degree of relapse postsurgically, but there was a failure in all the cleft groups to correct the lack of nasal projection.

scholarly journals Three-dimensional cone beam computed tomographic image reorientation using soft tissues as reference for facial asymmetry diagnosis

2013 ◽  
Vol 84 (1) ◽  
pp. 38-47 ◽  
Author(s):  
Jae-Kyu Lee ◽  
Pil-Kyo Jung ◽  
Cheol-Hyun Moon
Keyword(s):  
Soft Tissue ◽  
Soft Tissues ◽  
Three Dimensional ◽  
Facial Asymmetry ◽  
Cone Beam ◽  
Expert Group ◽  
Computed Tomographic ◽  
Asymmetry Analysis ◽  
Cbct Image ◽  
Facial Midline

ABSTRACT Objective: To investigate discrepancies in results of facial asymmetry analysis using different cone beam computed tomography (CBCT) image reorientation methods and the effectiveness of soft tissue as a reorientation reference for analysis of facial asymmetry. Materials and Methods: An asymmetric group of 30 patients with 4 mm or more of chin point (menton [Me]) deviation and a symmetric group of 30 patients with less than 4 mm of deviation of Me were chosen as study subjects. Three orientation methods were used to calculate and compare Me deviation values of the 60 subjects. Two methods used only skeletal landmarks for reference, and one method included the soft tissue landmarks around the eye. Preferences of an expert group for the facial midline as determined by each reorientation method were also examined. Results: The examinations showed significant discrepancies in Me deviation values between the three reorientation methods. The expert group showed the greatest preference for the facial midline reorientation method that incorporated soft tissue landmarks of the eye. Conclusions: These study findings suggest that the inclusion of soft tissue landmarks, especially those around the eyes, is effective for three-dimensional CBCT image reorientation for facial asymmetry analysis.

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