:Using a Three-dimensional Non-contact Laser Scanner
スポンサーリンク
概要
- 論文の詳細を見る
In severe skeletal mandibular prognathism with soft tissue distortion, maxillary advancement, combined with mandibular set-back operation, is frequently performed to improve facial esthetics. However, few studies have been reported on the three-dimensional soft tissue changes following two-jaw surgery in Japanese subjects. Therefore, we used a threedimensional non-contact laser scanner (VIVID700<SUP>®</SUP>MINOLTA) to assess presurgical and postsurgical soft tissue changes, focused on the midface. Subjects constituted five female prognathtic patients without facial asymmetry, who had received sagittal split ramus and Le Fort I osteotomies at Niigata University Dental Hospital. All cases received their preoperative and postoperative orthodontic treatment by the standard edgewise system. To standardize the scanning procedure, the VIVID700 was fixed by a special metal frame, ear rods were used to stabilize the head, and the FH plane was kept horizontal. The scanner allowed a single scan in 0.6 seconds. Presurgical and postsurgical images were taken and processed; 16 horizontal and 17 sagittal lines were constructed and were used to produce an average face for each stage. Average form showed little change in the upper region of the cheek, while the lower region of the cheek became full. In the nose area, the nose tip moved anterior and coronal, and the nasal breadth tended to widen. The upper lip moved anterior, on average.<BR>In conclusion, although the main aim of maxillary advancement is to improve midfacial fullness, the concomitant nasal changes should be considered, and its effect on treatment outcome be ascertained.
- 特定非営利活動法人 日本顎変形症学会の論文
特定非営利活動法人 日本顎変形症学会 | 論文
- 水平骨切りによるオトガイ形成術後の骨吸収に関する検討
- Analysis of Patient Questions Collected for the Establishment of Clinical Guidelines for the Treatment of Jaw Deformities
- Study of Osteo-/Chondropenia Caused by Impaired Chemokine Receptor and for Progressive/ Idiopathic Condylar Resorption
- A Case of Cleft Lip and Palate with Velopharyngeal Incompetence Treated by Maxillary Distraction Osteogenesis
- Applicability of Multiple Linear Regression Analysis to the Analysis of Three-dimensional Changes in Perioral Soft Tissue Following Mandibular Setback Surgery