Evaluation of an endosseous titanium implant with a sandblasted and acid-etched surface in the canine mandible: Radiographic results
Evaluation of an endosseous titanium implant with a sandblasted and acid-etched surface in the canine mandible: Radiographic results
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DOI：
10.1034/j.1600-0501.1996.070306.x
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发表时间：
1996-09-01
影响因子：
4.3
通讯作者：
Buser, D
中科院分区：
文献类型：
--
作者：
Cochran, DL;Nummikoski, PV;Buser, D
先前的研究已经在短期实验中证明，喷砂和酸蚀刻（SLA）钛种植体在非口腔骨中的骨-种植体接触比钛等离子喷涂（TPS）种植体更大。在本研究中，SLA种植体在犬下颌骨中进行了长达15个月的无负荷和负荷条件下的X线比较。将69个种植体植入6只猎狐犬中。在基线、前负荷、负荷后3、6、9和12个月拍摄标准化X线片。加载的种植体用类似于自然牙列的金冠修复。通过测量种植体肩和最冠状骨-种植体接触（DIB）之间的距离，并使用计算机辅助密度图像分析（CADIA）评价骨密度变化，对种植体的骨反应进行放射学评估。沿种植体沿着冠状和顶部定义了5个不同的感兴趣区域（AOI）。DIB测量结果显示，在预载荷评价（p=0.0142）和3个月载荷（0.73 mm/1.06 mm; p=0.0337）时，SLA种植体的骨高度损失（0.52 mm）显著低于TPS种植体（0.69 mm）。在1年随访期间，两种植入物类型之间的差异保持不变。当比较前负荷与基线数据（p=0.0890）和3个月与基线数据（p=0.0912）时，SLA种植体的CADIA测量结果也显示出相同的趋势，显示出更高的牙槽骨密度值。在两种种植体的顶端区域均未观察到可测量的骨密度变化。这些结果表明，SLA种植体是上级的TPS种植体，在口腔骨的X线测量在卸载和加载条件下。
Previous studies have demonstrated in short-term experiments that a sandblasted and acid-etched (SLA) titanium implant had a greater bone-to-implant contact than a titanium plasma-sprayed (TPS) implant in non-oral bone. In the present study, an SLA implant was compared radiographically to a TPS implant under unloaded and loaded conditions in the canine mandible for up to 15 months. 69 implants were placed in 6 foxhounds. Standardized radiographs were taken at baseline, preload, 3, 6, 9, and 12 months of loading. Loaded implants were restored with gold crowns similar to the natural dentition. Radiographic assessment of the bone response to the implants was carried out by measuring the distance between the implant shoulder and the most coronal bone-to-implant contact (DIB) and by evaluation of bone density changes using computer-assisted densitometric image analysis (CADIA). 5 different areas-of-interest (AOI) were defined coronally and apically along the implant. DIB measurements revealed that SLA implants had significantly less bone height loss (0.52 mm) than TPS implants (0.69 mm) at the preload evaluation (p=0.0142) as well as at 3 months of loading (0.73 mm/1.06 mm; p=0.0337). This difference was maintained between the implant types during the 1-year follow-up period. The same trend was also evident for CADIA measurements with SLA implants showing higher crestal bone density values when comparing preload to baseline data (p=0.0890) and 3 months to baseline data (p=0.0912). No measurable bone density changes were apparent in the apical areas of either implant. These results suggest that SLA implants are superior to TPS implants as measured radiographically in oral bone under unloaded and loaded conditions.