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目的:测量分析国人个别正常成人上前牙美学区唇、腭侧骨板厚度,为口腔种植手术,尤其是即刻种植的术前分析、方案制定提供数据支持,并为构建数据库奠定基础。方法:应用KaVo 3D eXam CBCT机对符合纳入标准的60例受试者进行锥形束CT(CBCT)扫描,所得Dicom格式三维重建数据导入InVivo 5软件,测量垂直于牙体长轴L3、L6、L9、L12水平处相应唇、腭侧骨板厚度,所得数据应用SPSS 18.0软件包进行95%参考值范围、频率、配对样本t检验、独立样本t检验、方差分析及多重比较。结果 :在各牙位各参考线水平,唇侧骨板厚度均较腭侧薄(P<0.05),唇侧骨板较多出现小于1 mm及骨板缺如的情况(40.6%~93.1%),腭侧骨板厚度普遍大于2 mm(L6及以上水平:60%~100%);左右同名牙、同牙位唇腭侧、性别、年龄段、同参考线不同牙位、同牙位不同参考线间骨板厚度存在差异。结论:上前牙区种植时常存在骨量不足情况,以侧切牙处尤为明显;唇侧骨板厚度较腭侧更薄,且常存在凹陷。种植手术时应在CBCT指导下,适当偏腭侧植入,必要时应用自体骨移植以及骨替代材料、骨劈开、骨增量技术,保证唇侧骨壁的完整性及足够的骨板厚度。
OBJECTIVE: To measure and analyze the thickness of lip and palatal bone in the anterior aesthetic area of some Chinese adults, and provide the data support for the oral implant surgery, especially the preoperative analysis and plan development of instant planting, and lay the foundation for the construction of the database. Methods: Conical beam computed tomography (CBCT) was performed on 60 eligible subjects using the KaVo 3D eXam CBCT machine. The resulting Dicom 3D reconstructed data was imported into InVivo 5 software and measured perpendicular to the long axis L3, L6, L9, and L12. The data were then analyzed using the SPSS 18.0 software package for a 95% reference range, frequency, paired sample t-test, independent sample t-test, analysis of variance and multiple comparisons. Results: The thickness of labial plate was thinner than that of the palatal palate at each reference level (P <0.05), but less than 1 mm was found in labial plate (40.6% -93.1% ), Palatal bone thickness is generally greater than 2 mm (L6 and above: 60% to 100%); about the same name of the same teeth, with the location of the palatal lip, sex, age, with the reference line different teeth, There are differences in the thickness of the plate between different reference lines. CONCLUSIONS: In the anterior teeth area, there is often a lack of bone mass during planting, especially in the lateral incisors. The thickness of the labial plate is thinner than the palatal side, and often there is a depression. Under the guidance of CBCT, implants should be properly placed on the palatal palate under the guidance of CBCT. If necessary, autologous bone grafts and bone replacement materials, osteotomy, and bone augmentation techniques should be used to ensure the integrity of the labial osseous wall and sufficient plate thickness .