CBCT测量骨小梁孔隙率评价骨小梁结构的应用研究

Application of CBCT in measuring trabecular porosity and evaluating trabecular structure

目的探讨应用与软件公司合作研发的CBCT辅助工具测量骨小梁孔隙率作为骨小梁结构的替代参数的可行性。方法选取安徽省口腔医院种植患者术前拍摄的CBCT资料200例,对231个牙缺失位点分别应用CBCT辅助工具测量骨小梁孔隙率,CTAn软件测量骨小梁结构参数(BV/TV、Tb.Th、Tb.N、Tb.Sp)。数据采用SPSS22.0软件并使用Pearson相关性分析、方差分析和t检验进行统计学分析。结果骨小梁孔隙率与BV/TV成负相关(r=-0.761,P<0.05);与Tb.Sp成正相关(r=0.856,P<0.05)。缺牙区平均骨小梁孔隙率:上颌后牙区(4.1693±6.0950)%>下颌后牙区(1.8071±2.2037)%>上颌前牙区(1.4079±2.0512)%>下颌前牙区(1.3309±2.4318)%,上颌后牙区与其他区骨小梁孔隙率差异均有统计学意义(P<0.05)。不同年龄段中,30-49岁平均骨小梁孔隙率较小,与18-29岁和50-70岁较大的平均骨小梁孔隙率差异有统计学意义(P<0.05)。骨小梁孔隙率与骨密度无相关性(P>0.05),骨小梁孔隙率均值:Ⅳ类骨(1.9359±2.1855)%>Ⅱ/Ⅲ类骨(1.7030±4.6605)%>Ⅰ类骨(1.5307±4.0950)%,不同骨质类型的差异无统计学意义(P>0.05)。结论在口腔疾病治疗过程中,应用CBCT测量骨小梁孔隙率,评价患者牙槽骨骨小梁结构变化,具有可行性。

Objective To explore the feasibility of measuring trabecular porosity with CBCT auxiliary tool developed in cooperation with software company as an alternative parameter for evaluating trabecular structure.Methods A total of 231 tooth loss sites in 200 patients with preoperative CBCT were selected from Anhui Provincial Stomatological Hospital.The trabecular porosity was measured by CBCT auxiliary tools,and the structural parameters(BV/TV,Tb.Th,Tb.N,Tb.SP)by CTAn software,SPSS22.0 software and Pearson correlation analysis,analysis of variance and t test were used for statistical analysis.Results The porosity of bone trabecular was negatively correlated with BV/TV(r=-0.761,P<0.05);and positively correlated with Tb.Sp(r=0.856,P<0.05).Average trabecular porosity in the missing area:maxillary posterior region(4.1693±6.0950)%>mandibular posterior region(1.8071±2.2037)%>maxillary anterior region(1.4079±2.0512)%>mandibular anterior region(1.3309±2.4318)%,the difference of bone trabecular porosity between the maxillary posterior area and other areas was statistically significant(P<0.05).The average trabecular porosity of different age groups was significantly different.The average trabecular porosity of 30-49 age group was smaller than that of 18-29 and50-70 age groups(P<0.05).There was no significant relationship between trabecular porosity and bone mineral density(P<0.05),the mean trabecular bone porosity:bone typeⅣ(1.9359±2.1855)%>bone typeⅡ/Ⅲ(1.7030±4.6605)%<bone typeⅠ(1.5307±4.0950)%,there was no significant difference between groups(P<0.05).Conclusion In the treatment of oral diseases,CBCT can be used to measure the trabecular porosity and evaluate the changes in the structure of alveolar bone trabecular.