A study on alveolar ridge augmentation guided by orthodontic forced eruption in patients with severe periodontitis
10.3760/cma.j.cn112144-20230816-00086
- VernacularTitle:正畸伸长重度牙周炎患牙引导牙槽骨增量初探
- Author:
Hao LIU
1
;
Xinnong HU
;
Jian JIAO
;
Yan GU
;
Jie SHI
Author Information
1. 北京大学口腔医学院·口腔医院正畸科 国家口腔医学中心 国家口腔疾病临床医学研究中心 口腔生物材料和数字诊疗装备国家工程研究中心 口腔数字医学北京市重点实验室，北京 100081
- Keywords:
Periodontitis;
Orthodontic extrusion;
Cone-beam computed tomography;
Alveolar ridge augmentation
- From:
Chinese Journal of Stomatology
2023;58(10):1019-1026
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To evaluate the clinical effect of alveolar bone augmentation in teeth with severe periodontitis using orthodontic forced eruption.Methods:Twelve patients (5 males and 7 females) with severe periodontitis and malocclusion who visited the Department of Orthodontics and Department of Periodontology, Peking University School and Hospital of Stomatology from October 2018 to May 2022 were included in this retrospective study. The age was (38.8±6.6) years (24-49 years). A total of 16 maxillary incisors that could not be retained due to severe periodontitis were included. The orthodontic fixed appliance was used to extrude the teeth. Cone-beam CT (CBCT) images of the patients before and after orthodontic forced eruption were collected. The voxel-based registration was used to superpose the images before and after orthodontic forced eruption. The height, thickness, and apical alveolar bone area were measured on the sagittal plane. The alveolar bone volume before and after orthodontic forced eruption was measured using three-dimensional reconstruction technique, and the influencing factors related to the alveolar volume change were analyzed.Results:The results of this study showed that the eruption distance of the teeth was (2.37±0.82) mm, and the alveolar bone height increased by (1.11±0.79) and (0.98±0.79) mm ( t=3.73, P=0.010; t=4.85, P<0.001). The proximal and distal alveolar bone height increased by (1.10±0.78) and (0.86±1.08) mm, respectively ( t=5.59, P<0.001; t=3.18, P=0.006). The alveolar bone thickness decreased (0.30±0.31) mm ( t=-3.75, P=0.002) and alveolar bone area increased (6.84±5.86) mm 2 ( t=3.71, P<0.001). The alveolar bone volume increased (53±49) mm 3 ( t=4.38, P<0.001). The alveolar bone volume was moderately positively correlated with eruption distance, apical and mesial alveolar bone thickness ( r=0.55, P=0.028; r=0.63, P=0.008; r=0.67, P=0.005). Conclusions:Orthodontic forced eruption results in a favorable increase of the alveolar bone in the upper incisor that cannot be retained due to severe periodontitis, which provides better periodontal hard tissue conditions for subsequent dental implant.
