成人骨性Ⅱ类患者不同垂直骨面型上颌后牙区牙槽骨复合体形态比较的CBCT分析  

CBCT analysis of the comparison between vertical facial type and tooth-alveolar bone complex morphology in maxillary posterior teeth of adult patients with skeletal Class Ⅱ

作　　者：鲁琦澔 张卫兵[1] LU Qihao;ZHANG Weibing(Jiangsu Key Laboratory of Oral Disease,Nanjing Medical University,Department of Orthodontics,Affilia-ted Hospital of Stomatology,Nanjing Medical University,Nanjing 210029,China)

机构地区：[1]南京医科大学口腔疾病研究江苏省重点实验室,南京医科大学附属口腔医院正畸科,江苏南京210029

出　　处：《口腔医学》2020年第5期432-436,共5页Stomatology

基　　金：国家自然科学基金(81671019);科教强卫口腔正畸(ZDXKA2016026);江苏高校优势学科建设工程资助项目(PAPD-2018-87)。

摘　　要：目的采用CBCT评估成年骨性Ⅱ类患者上颌后牙区牙槽骨复合体形态,研究分析其与垂直骨面型之间是否存在相关性。方法选取2015-2018年就诊于南京医科大学附属口腔医院正畸科的84例骨性Ⅱ类成年患者,测量其第一第二磨牙的颊舌倾斜度、牙槽骨厚度及斜度、基骨弓宽度、牙槽骨高度、牙弓宽度以及上颌后牙区牙槽骨长度。结果高角组的第一第二磨牙颊向倾斜更大,基骨弓宽度更窄,第二磨牙的牙槽骨高度更低,牙槽骨矢状向长度更短;第一磨牙处的腭侧牙槽骨更加直立,腭根牙槽骨厚度更薄。第一第二磨牙的牙弓宽度及垂直向牙槽骨发育与垂直骨面型无相关性。结论在成人骨性Ⅱ类患者中,垂直骨面型与上颌后牙区牙槽骨复合体形态存在相关性,提醒我们在临床正畸治疗中要注意高角患者牙齿移动的生理边界。Objective To evaluate the tooth-alveolar bone complex morphology of the maxillary posterior region of adult patients with skeletal Class Ⅱ by CBCT, and to analyze whether there is a correlation between the vertical facial type and the alveolar bone morphology in the maxillary posterior region. Methods The sample consisted of 84 adult patients with skeletal Class Ⅱ who visited Affiliated Stomatological Hospital of Nanjing Medical University from 2015 to 2018. The buccolingual inclination of the first molar and second molar, the thickness and inclination of the alveolar bone, maxillary base width, buccal alveolar bone, arch width, and the sagittal length of alveolar were measured. Results The first molar and second molar of hyperdivergent group were more buccal inclined, had narrower maxillary base width and the alveolar height was smaller.The sagittal length of alveolar of hyperdivergent group was shorter. Compared with hypodivergent group, hyperdivergent group had more erect alveolar inclination and narrower alveolar bone thickness of palatal root. Arch width and vertical alveolar bone growth had no correlation with vertical facial type. Conclusion There is a correlation between vertical facial type and tooth-alveolar bone complex morphology in the maxillary posterior region of adult patients with skeletal Class Ⅱ, which reminds us of the orthodontic tooth movement limit of patients with higher mandibular plane angle.

关 键 词：骨性Ⅱ类 上颌后牙 牙槽骨 CBCT 

分 类 号：R783.5[医药卫生—口腔医学]