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Abstract：
To systematically review buccal bone thickness (BBT) in the anterior maxilla in different teeth, age groups and genders.
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, 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.
摘要：
系统评价不同牙齿上颌骨前部的颊骨厚度（BBT）。年龄组和性别。
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。
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。
