Department of Restorative Dentistry, Loma Linda University School of Dentistry, Loma Linda, California, USA.
Int J Oral Maxillofac Implants. 2011 Jul-Aug;26(4):873-6.
The purpose of this study was to classify the relationship of the sagittal root positions of the maxillary anterior teeth to their respective osseous housings using cone beam computed tomography (CBCT). The frequency of each classification was also reported.
A retrospective review of CBCT images was conducted on 100 patients (40 men, 60 women; mean age, 53.1 years) who fulfilled the inclusion criteria. The CBCT images were evaluated and the relationship of the sagittal root position of the maxillary anterior teeth to its associated osseous housing was recorded as Class I, II, III, or IV.
The frequency distribution of sagittal root position of maxillary anterior teeth indicated that, of the 600 samples, 81.1%, 6.5%, 0.7%, and 11.7% were classified as Class I, II, III, and IV, respectively.
An understanding of the clinical relevance of sagittal root position will provide adjunct data for the treatment planning of immediate implant placement and provisionalization in the anterior maxilla. A classification system may lead to improved interdisciplinary communication in treatment planning for implant-based therapy in the anterior maxilla.
本研究旨在使用锥形束 CT（CBCT）对上颌前牙的矢状根位置与其相应的骨室之间的关系进行分类，并报告每种分类的频率。
对符合纳入标准的 100 名患者（40 名男性，60 名女性；平均年龄 53.1 岁）的 CBCT 图像进行回顾性分析。评估 CBCT 图像，并将上颌前牙矢状根位置与其相关骨室的关系记录为 I 类、II 类、III 类或 IV 类。
上颌前牙矢状根位置的频率分布表明，在 600 个样本中，分别有 81.1%、6.5%、0.7%和 11.7%被分类为 I 类、II 类、III 类和 IV 类。
了解矢状根位置的临床相关性将为上颌前牙即刻种植体植入和临时修复的治疗计划提供附加数据。分类系统可能会提高上颌前牙种植体治疗计划中跨学科交流的效果。
