The Indications and Effects of Two Types of 3D-printed Surgical Guides in Mandibular Angle Ostectomy:A Comparative Study
10.3870/j.issn.1672-0741.24.01.003
- VernacularTitle:两种3D打印导板在下颌角成形术中的适应证及应用效果研究
- Author:
Youli CHEN
1
,
2
;
Peng AN
;
Shaoliang ZHOU
Author Information
1. 贵州医科大学附属口腔医院口腔颌面外科,贵阳 550001
2. 贵州医科大学口腔医学院,贵阳 550001
- Keywords:
mandibular ostectomy;
virtual surgical planning;
surgical template;
3-dimensional printing technique
- From:
Acta Medicinae Universitatis Scientiae et Technologiae Huazhong
2024;53(4):494-500
- CountryChina
- Language:Chinese
-
Abstract:
Objective This study aimed to analyze the use of various virtual surgical planning and 3D printing templates in mandibular angle ostectomy.Methods Twelve patients with mandibular angle prominence were selected from the Affiliated Stomatological Hospital of Guizhou Medical University between January 2022 and January 2023.Preoperative craniofacial CT scans were used to create three-dimensional models.Two types of virtual surgical planning and templates were designed:ascend-ing branch-fixed templates on the ramus(Group Ⅰ)and inferior border-fixed templates on the excised mandibular angle(GroupⅡ).Patients were divided into two groups based on the template used during surgery.The changes in the mandibular angle be-fore and two weeks after surgery were compared between the groups,and deviations between the surgical plans and postopera-tive results were measured.Results All patients healed successfully with satisfactory cosmetic outcomes.Lateral mandibular angles were observed in all patients of Group Ⅰ.In Group Ⅱ,one patient presented with a lateral angle,while the others showed medial angles.An increase in the mandibular angle(P＜0.01)was noted with no significant difference between the bilateral an-gles(P＞0.05).The deviation from the surgical planning was also not significantly different between the groups(P＞0.05).Conclusion Virtual surgical planning and 3D printed templates in mandibular angle ostectomy result in high accuracy and favor-able cosmetic outcomes.Ramus-fixed template is suitable for lateral mandibular angle type,while lower edge-fixed template is better for medial mandibular angle type.
