Stomatoloski Fakultet Univerzitet u Beogradu, Belgrade, Serbia.
Odontology. 2024 Apr;112(2):526-536. doi: 10.1007/s10266-023-00844-7. Epub 2023 Aug 29.
To detect predictive factors for the occurrence of complications associated with unerupted maxillary canines (C). A total of 83 cone beam computed tomograms (CBCT), made from November 1, 2021 to October 31, 2022, have met the inclusion criteria, whereby 110 unerupted C were detected. Independent variables were: gender, age, and C position. Outcome variables were detected complications: external root resorption (ERR) and dilaceration of adjacent tooth, ERR and dilaceration of C, dentigerous cyst, canine ankylosis, and adjacent teeth malposition. Chi-square test and logistic regression analysis were used to examine the relationship between income variables and detected complications. Vertical position of unerupted C showed as predictor for adjacent tooth dilacerations and malposition. Chance for dilaceration increases 5.5-fold with C position at the middle third of lateral incisor (LI) root, while chance of malposition increases 23.4-fold with its supra-apical position to the LI root, in comparison to the C position occlusal to the LI cemento-enamel junction. Age is a predictive factor for dentigerous cysts, with decreasing the chance of their occurrence 1.5-fold with each additional year of age. Early evaluation of the vertical position and timely treatment of C are decisive steps in preventing complications.
探讨上颌未萌尖牙（C）相关并发症发生的预测因素。
本研究共纳入 83 例 2021 年 11 月 1 日至 2022 年 10 月 31 日期间接受锥形束 CT 检查的患者，均符合纳入标准，共发现 110 颗未萌出的 C。本研究的独立变量为：性别、年龄和 C 的位置。因变量为检测到的并发症：牙根外吸收（ERR）和邻牙扭转、ERR 和 C 扭转、含牙囊肿、恒尖牙粘连和邻牙错位。采用卡方检验和逻辑回归分析来检验收入变量与检测到的并发症之间的关系。
未萌出 C 的垂直位置是邻牙扭转和错位的预测因素。与 C 位于中切牙（LI）牙根的近中三分之一相比，C 位于 LI 根的根尖上方时，牙扭转的可能性增加 5.5 倍，而 C 位于 LI 牙釉质-牙骨质交界处上方时，邻牙错位的可能性增加 23.4 倍。年龄是含牙囊肿的预测因素，年龄每增加 1 岁，其发生的可能性就会降低 1.5 倍。早期评估垂直位置并及时治疗 C 是预防并发症的关键步骤。
