上颌前牙与前磨牙唇侧骨壁厚度的CBCT测量分析  

Measurement of facial bone wall thickness of maxillary anterior teeth and premolars on cone beam computed tomography images

作　　者：沈建伟[1] 何福明[1] 江巧红[1] 单海琴 

机构地区：[1]浙江大学医学院附属口腔医院,浙江杭州310006 [2]宁波市鄞州第二医院口腔科,浙江宁波315100

出　　处：《浙江大学学报（医学版）》2012年第3期234-238,共5页Journal of Zhejiang University(Medical Sciences)

基　　金：浙江省自然科学基金杰出青年科学基金项目(R2110374)

摘　　要：目的:通过锥形术射线计算机控制断层扫描(cone beam computed tomography,CBCT)测量分析,研究上颌前牙区及前磨牙区各个位点的唇侧骨壁厚度,为上颌前牙与前磨牙的种植修复提供一定的参考依据。方法:选取浙江大学附属口腔医院118例患者的CBCT资料,测量上颌前牙区和前磨牙区各受测牙在釉牙骨质界根方4 mm处(位点1)和牙根中点处(位点2)的唇侧骨壁在与牙长轴垂直方向上的厚度。结果:中切牙、侧切牙和尖牙的唇侧骨壁厚度大多集中在0.5～1.5mm,其在位点1处唇侧骨壁厚度不足1.0 mm的分别达到了44.1%、65.2%和45.8%,位点2处唇侧骨壁厚度不足1.0 mm的分别达到了56.8%、89.8%和61.0%;而第一前磨牙和第二前磨牙的唇侧骨壁厚度大多在1.0 mm以上,分别达到了77.1%和94.1%(位点1),68.7%和94.1%(位点2)。结论:上颌前牙区唇侧骨壁厚度不足的情况普遍存在,建议使用CBCT等技术手段对上颌前牙区的种植患者进行严格的术前评估,选择合适的治疗方案,从而获得理想的美学效果与远期功能。Objective： To measure the thickness of facial bone wall of maxillary anterior teeth and premolars based on cone beam computed tomography （CBCT） images. Methods： CBCT images from 118 patients were collected from the Affiliated Stomatology Hospital of Zhejiang University. The thickness perpendicular to the long axis of facial bone wall was measured at two locations： 4 mm apical to the cementoenamel junction （point 1 ） and the middle of the root （point 2）. Results： The thickness of the facial bone walls of central incisors,lateral incisors and canines ranged from 0.5 to 1.5 ram. A thin facial bone wall （ 〈 1.0 ram） was quite frequent in central incisors （44.1% at point 1,56.8% at point 2）,lateral incisors （65.2% at point 1,89.8% at point 2） and canines （45.8% at point 1,61.0% at point 2）. In contrast, the majority of examined first premolars （77. 1% at point 1,68.7% at point 2） and second premolars （94. 1% at point 1,94. 1% at point 2） exhibited a thick facial bone wall （/〉1.0 ram）. Conclusions： A thin facial bone wall of teeth in the anterior maxilla is common. Radiographic analysis of facial bone wall using CBCT is recommended fiJr selection of appropriate treatment approach

关 键 词：牙种植 双尖牙/解剖学和组织学 唇/解剖学和组织学 上颌骨/解剖学和组织学 美学 锥束计算机体层摄影术 治疗结果 

分 类 号：R816.98[医药卫生—放射医学]