Three-Dimensional Geometric Morphometry of Facial Soft Tissue Changes After Bilateral Sagittal Split Ramus Osteotomy

Bougha, Safieh Al; Nakano, Hirofumi; Yasuda, Kousuke; Suzuki, Koji; Yamada, Tomohiro; Takahashi, Ichiro; Ueno, Takaaki; Mori, Yoshihide

doi:10.1097/scs.0000000000008228

Journal of Craniofacial Surgery

2021

DOI: 10.1097/scs.0000000000008228

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Three-Dimensional Geometric Morphometry of Facial Soft Tissue Changes After Bilateral Sagittal Split Ramus Osteotomy

Safieh Al Bougha

Hirofumi Nakano

Kousuke Yasuda³

et al.

Abstract: This study aimed to evaluate the performance of geometric morphometry (GM) to assess the changes in facial soft tissue after orthognathic surgery. Subjects were 27 patients (skeletal class III) who

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Cited by 2 publications

References 44 publications

(95 reference statements)

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Effect of different head positions on three-dimensional facial images

Yoon,

Kim,

et al. 2024

Oral Biol Res

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The purpose of this study was to determine whether head posture affects three-dimensional (3D) facial images. This study evaluated facial images of 10 mannequins, which are taken from standard postures, left and right rotations, and up and down rotations. The images with changed head posture were superimposed onto standard head posture image, and the difference between the two images was used to evaluate deformations in images with the changed head postures. The 3D facial images showed considerable differences depending on different head positions.

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Effect of different head positions on three-dimensional facial images

Yoon,

Kim,

et al. 2024

Oral Biol Res

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Application of the Homologous Modeling Technique for Precision Medicine in the Field of Oral and Maxillofacial Surgery

Nakano

Suzuki

Inoue

et al. 2022

JPM

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In the field of oral and maxillofacial surgery, establishment of a new method for predicting morphology is desirable. Therefore, the purpose of the present study was to establish a new method for predicting the original shape of a mandibular defect site using the homologous modeling technique. This study used data from 44 patients who underwent computed tomography in the Department of Oral Surgery at Osaka Medical College. Two types of homologous models were constructed: total mandible (TM) and half mandible (HM). Principal component analysis (PCA) was performed using point cloud data of the homologous model M and homologous model HM, and a multiple regression equation was created using the PC value of TM as the object variable and PC value of HM as the explanatory variable. The predicted PC (M) was created from PC (HM) using a regression formula, back-calculated from point cloud data from PC (M), to create the predicted mandible model. Finally, the original image (TC-M) and estimated mandible were superposed and examined. The mean absolute error between the predicted mandible and actual mandible was 1.04 ± 1.35 mm. We believe that this method will be applicable in actual clinical practice.

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Three-Dimensional Geometric Morphometry of Facial Soft Tissue Changes After Bilateral Sagittal Split Ramus Osteotomy

Abstract: This study aimed to evaluate the performance of geometric morphometry (GM) to assess the changes in facial soft tissue after orthognathic surgery. Subjects were 27 patients (skeletal class III) who

Cited by 2 publications

References 44 publications

Effect of different head positions on three-dimensional facial images

Effect of different head positions on three-dimensional facial images

Application of the Homologous Modeling Technique for Precision Medicine in the Field of Oral and Maxillofacial Surgery

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