PubMed, EMBASE and Cochrane databases were searched up to April 2020. Clinical and radiographic studies reporting on BBT of maxillary anterior teeth, with at least 10 patients, were included. A meta-analysis was performed using random effect models to report differences of BBT.
50 studies were included. Using bone crest (BC) as a reference point, no significant differences were found in BBT between different tooth types, except for 0.16 mm (95%-CI: 0.02-0.30) increased mid-root thickness of premolars compared to canines. Using the CEJ as a reference point, canines presented with a significantly increased thickness of 0.32 mm (95%-CI: 0.11-0.54) coronally compared to laterals. When BC was used as reference, males demonstrated a significantly increased thickness of 0.21 mm (95%-CI: 0.15-0.27) apically, while middle-aged adults showed a 0.06 mm (95%-CI: -0.12, -0.01) statistically significant increase in the coronal level compared to older adults.
Few maxillary anterior teeth have BBT greater than 1 mm. Buccal bone tends to get thicker from a coronal to apical position along the root surface and from an anterior to posterior position in the arch.
PubMed,截至2020年4月,搜索了EMBASE和Cochrane数据库。报告上颌前牙BBT的临床和影像学研究,至少有10个病人,包括在内。使用随机效应模型进行荟萃分析以报告BBT的差异。
包括50项研究。使用骨冠(BC)作为参考点,不同牙齿类型之间的BBT没有发现显着差异,除0.16mm(95%-CI:0.02-0.30)外,与犬科动物相比,前磨牙的中根厚度增加。使用CEJ作为参考点,与侧枝相比,冠状犬的厚度显着增加了0.32mm(95%-CI:0.11-0.54)。当BC被用作参考时,男性在顶部表现出0.21毫米的厚度显着增加(95%-CI:0.15-0.27),与老年人相比,中年人的冠状水平有0.06mm(95%-CI:-0.12,-0.01)的统计学显着增加。
上颌前牙很少有BBT大于1mm。从牙根表面的冠状到根尖位置以及从牙弓的前部到后部位置,骨往往会变厚。