上颌磨牙区种植体周围骨密度CT测量值与其稳定性的相关分析  

Relationship between the Bone Densities around Implants Obtained by CT and Implant Stabilities in Maxillary Molar Area

作　　者：沙烟直 魏明贵 王国世 SHA Yan-zhi;WEI Ming-gui;WANG Guo-shi(Department of Stomatology,Jing’an Distric Centre Hospital of Shanghai,Shanghai 200040,China)

机构地区：[1]上海市静安区中心医院复旦大学附属华山医院静安分院口腔科

出　　处：《口腔颌面外科杂志》2018年第6期332-337,共6页Journal of Oral and Maxillofacial Surgery

基　　金：上海市静安区卫生计生系统十百千卫生人才培养项目资助(JWRC2014Q11)

摘　　要：目的:探讨基于锥形束CT(CBCT)的上颌磨牙种植体周围骨密度的CT测量灰度值,与牙种植术后稳定性(ISQ)之间的关系。方法:按条件筛选接受上颌磨牙区牙种植修复患者33例,术前通过预种植位置CBCT扫描,并利用CT重建软件模拟测量预种植体周围骨密度灰度值,以亨氏单位(Hounsfield units,HU)表示。随后根据软件模拟种植体方位制作种植导板,于相应预种植区植入ITI种植体48枚,并分别于术后即刻、术后3个月使用共振频率分析(resonance frequency analysis,RFA)仪器分别测量和记录种植体的稳定系数(implant stability quotient,ISQ)。运用SPSS软件对实验数据进行统计学分析。结果:33例患者上颌磨牙种植体周围骨密度灰度值均值为(439.8±101.7)HU;术后即刻ISQ均值为(58.6±7.6)HU,术后3个月ISQ均值为(66.1±7.7)HU,二者差异有统计学意义(P<0.01)。上颌磨牙种植体周围骨密度HU值分别与术后即刻稳定系数ISQ、3个月后稳定系数ISQ均呈正相关性,其中与前者呈弱相关(r=0.33),与后者呈强相关(r=0.63)。结论:在上颌磨牙区,根据种植区域骨密度的CT测量值,对该区域牙种植体预后判断具有一定的临床指导意义。Objective:To study the relationship between bone mineral density(BMD)of posterior maxilla using cone beam computed tomography(CBCT)and stabilities of implants,right after the surgery and 3 months later.Methods:33 patients underwent implant surgeries were assessed randomly.Hounsfield units(HU)value was measured preoperatively,then the implant stability quotient(ISQ)were recorded right after 48 implants were placed and 3 months later.All data was compared using SPSS software.Results:BMD in posterior maxilla was(439.8±101.7)HU.The ISQ measured right after procedures(58.6±7.6)was significantly lower than ones measured 3 months after(66.1±7.7),P<0.01.There was a positive and weak correlation between BMD and ISQ at the time of surgeries in posterior maxilla(r=0.33),and strongly correlation between that of 3 months(r=0.63).Conclusion:There was a positive correlation between BMD and ISQ in posterior maxilla.Further researches were needed to study the consequences.

关 键 词：上颌磨牙区 骨密度 种植体稳定性 

分 类 号：R782.4[医药卫生—口腔医学]