Site selection of micro-implant anchorages in the infrazygomatic crest in adult orthodontic patients
10.7518/hxkq.2024.2023282
- VernacularTitle:成年正畸患者颧牙槽嵴区微种植钉植入的位点选择
- Author:
Xinyi CHEN
1
;
Xiaoge JIANG
;
Song CHEN
Author Information
1. 口腔疾病防治全国重点实验室 国家口腔医学中心 国家口腔疾病临床医学研究中心四川大学华西口腔医院正畸科,成都 610041
- Keywords:
infrazygomatic crest;
miniscrews;
cortical bone density;
cortical bone thickness;
effective bone mass;
gender factor
- From:
West China Journal of Stomatology
2024;42(2):207-213
- CountryChina
- Language:Chinese
-
Abstract:
Objective To determine the optimal placement of miniscrews,this study compared adult male and fe-male patients in terms of cortical bone density,cortical bone thickness,and available bone width in the infrazygomatic crest region.Methods The cone beam computed tomography imaging data of 200 patients(20-30 years old;100 males and 100 females)were collected.The right maxillary posterior teeth in the sagittal plane were divided into six levels from proximal to distal,and three measurement sites were positioned at vertical distances of 8,10,and 12 mm from the cementum.Cortical bone density,cortical bone thickness,and available bone width were measured in 18 measurement sites in the infrazygomatic crest and analyzed statistically.Results The highest cortical bone density,cortical bone thickness,and available bone width in the infrazygomatic crest in adult male and female patients were at the level of the interradicular space between the maxillary second premolar and maxillary first molar.The bone cortical density and thickness increased with vertical height,whereas the available bone width decreased with increasing vertical height.Dif-ferences were observed in cortical bone density,cortical bone thickness,and available bone width between adult male and female patients.Conclusion The optimal im-plantation sites of the micro-implant anchorages in the in-frazygomatic crest were at the level of the interradicular space between the maxillary second premolar and the maxillary first molar,and the vertical height of the optimal implan-tation site in males was appropriately higher than that in females.
