Influence of bone density on implant stability parameters and implant success: a retrospective clinical study.
Influence of bone density on implant stability parameters and implant success: a retrospective clinical study.
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DOI：
10.1186/1472-6831-8-32
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发表时间：
2008-11-24
期刊：
影响因子：
2.9
通讯作者：
McGlumphy EA
中科院分区：
文献类型：
--
作者：
Turkyilmaz I;McGlumphy EA
本临床研究的目的是用计算机断层扫描(CT)测定种植体植入部位的局部骨密度，并探讨局部骨密度对种植体稳定性参数和种植体成功率的影响。2003至2005年间，共为111名患者植入了300枚植入物。用CT测定各种植体受者部位的骨密度。以插入力矩和共振频率分析作为种植体稳定性参数。用OsseoCare测量机记录峰值插入扭矩。在种植体植入后即刻、6个月、12个月用Osstell仪器进行共振频率分析。在放置的300个植入物中，有20个丢失，这意味着存活率为%。术后3年(平均3.7±0.7年)93.3例。种植体植入时的平均骨密度为620±251Hu，插入扭矩为36.1±8ncm，插入扭矩为65.7±9isq，骨密度与插入扭矩值(p<；0.001)、骨密度与插入扭矩(p<；0.001)、插入扭矩与插入扭矩(p<；0.001)呈显著正相关。种植成功的280个种植体的骨密度、插入扭矩和RFA值分别为645±240HU、37.2±7NCM和67.1±7ISQ，而失败的种植体骨密度、插入扭矩和RFA值分别为267±47HU、21.8±4NCM和46.5±4ISQ，差异均有统计学意义(p<；0.001)。CT是确定种植体植入部位骨密度的有用工具，而局部骨密度对一期种植体的稳定性有重要影响，是决定种植体成功与否的重要因素。
The aim of the present clinical study was to determine the local bone density in dental implant recipient sites using computerized tomography (CT) and to investigate the influence of local bone density on implant stability parameters and implant success. A total of 300 implants were placed in 111 patients between 2003 and 2005. The bone density in each implant recipient site was determined using CT. Insertion torque and resonance frequency analysis were used as implant stability parameters. The peak insertion torque values were recorded with OsseoCare machine. The resonance frequency analysis measurements were performed with Osstell instrument immediately after implant placement, 6, and 12 months later. Of 300 implants placed, 20 were lost, meaning a survival rate of %. 93.3 after three years (average 3.7 ± 0.7 years). The mean bone density, insertion torque and RFA recordings of all 300 implants were 620 ± 251 HU, 36.1 ± 8 Ncm, and 65.7 ± 9 ISQ at implant placement respectively; which indicated statistically significant correlations between bone density and insertion torque values (p < 0.001), bone density and ISQ values (p < 0.001), and insertion torque and ISQ values (p < 0.001). The mean bone density, insertion torque and RFA values were 645 ± 240 HU, 37.2 ± 7 Ncm, and 67.1 ± 7 ISQ for 280 successful implants at implant placement, while corresponding values were 267 ± 47 HU, 21.8 ± 4 Ncm, and 46.5 ± 4 ISQ for 20 failed implants; which indicated statistically significant differences for each parameter (p < 0.001). CT is a useful tool to determine the bone density in the implant recipient sites, and the local bone density has a prevailing influence on primary implant stability, which is an important determinant for implant success.