A CBCT study of alveolar bone structure around incisors of the patients with verical facial type of skeletal Class Ⅱ

VernacularTitle:骨性Ⅱ类不同垂直骨面型患者切牙牙槽骨形态特征的 CBCT 研究
Author: Ni LIAO ; Nuo ZHOU ; Shuixue MO ; Jian DAI ; Shaohua SONG
Publication Type:Journal Article
Keywords: Skeletal Class Ⅱ; Vertical facial type; Alveolar bone; Cone-beam CT(CBCT)
From: Journal of Practical Stomatology 2015;(4):556-559
CountryChina
Language:Chinese
Abstract: Objective:To investigate the structure of alveolar bone around incisors in patients with verical facial type of skeletal ClassⅡ by CBCT.Methods:60 skeletal Class Ⅱ patients were divided into low angle,average angle and high angle cases(n =20)by FMA.CBCT scanning was made and the thickness of the labial and lingual alveolar bone around the incisors in each subject was meas-ured.The measurements were analyzed using ANOVA.Results:The total width of alveolar bone at the root apical level of maxillary and mandibular incisors,the lingual thickness of alveolar bone at the root midpoint of maxillary incisors and labial thickness of alveolar bone at the root midpoint of mandibular incisors in the high angle cases were thinner than that in the average and low angle cases(P <0.05),but there was no significant difference in labial thickness of alveolar bone at the crest among 3 groups.Conclusion:The alveo-lar bone thickness around incisors of high angle patients is thinner,more attention should be paid for the alveolar bone absorpation and tooth root exposure in these patients.