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首页> 外文期刊>International Journal of Dentistry >Effect of Surgical Installation of Dental Implants on Surface Topography and Its Influence on Osteoblast Proliferation
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Effect of Surgical Installation of Dental Implants on Surface Topography and Its Influence on Osteoblast Proliferation

机译：牙科植入物的外科手术安装对表面形貌的影响及其对成骨细胞增殖的影响

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Surface treatment alone does not determine the final microtopography of a dental implant, which can be influenced by implant design and the surgical procedure. This study investigated the effect of surgical placement of dental implants with same surface treatments on surface roughness. Three implants (SIN) of each group with different macrogeometries (Strong, Stylus, and Tryon) were analyzed using laser interferometry and scanning electron microscopy to evaluate surface topography. All threaded regions of the implants, namely, top, flank, and valley, were analyzed individually. Relevant surface parameters (Sa, Ssk, Sku, Str, and Sdq) were calculated for the different regions on each implant before (B) (n = 9) and after (A) (n = 9) placement into porcine rib bones. The behavior and proliferation of a preosteoblastic cell line MC3T3-E1 on titanium surface, cell viability, and osteopontin secretion were evaluated after 24?h, 48?h, and 96?h, also before (n = 18) and after (n = 18) implant placement into porcine ribs bone. As results, the valleys of all implants had an increase in Sa values after implant placement. By contrast, the tops of the Stylus A implant and the flanks of the Tryon A implant showed a significant decrease in mean height of the irregularities (Sa), 0.16?μm and 1.25?μm, respectively. The Stylus implant presented significantly () higher asymmetry values on the distribution curve for irregularity heights (Sku) in all regions after insertion into bone (6.99 for tops, 9.54 for flanks, and 17.64 for valleys), indicating a greater preponderance of peaks over valleys. An increase in roughness gradients (Sdq) was observed for all macrogeometries after insertion into bone. The cell culture results showed no significant difference () for all macrogeometries after bone placement. In conclusion, a subtle change in implant surface roughness was detected after insertion into bone for all the macrogeometries, without significantly affecting the cellular parameters studied.
机译：单独的表面处理并不能决定牙科植入物的最终微观形貌，这可能会受到植入物设计和手术程序的影响。这项研究调查了采用相同表面处理的牙科植入物的手术植入对表面粗糙度的影响。使用激光干涉测量法和扫描电子显微镜对每组具有不同宏观几何形状（强，触针和Tryon）的三个植入物（SIN）进行分析，以评估表面形貌。分别分析了植入物的所有螺纹区域，即顶部，侧面和谷部。在植入猪肋骨之前（B）（n = 9）和之后（A）（n = 9），计算每个植入物上不同区域的相关表面参数（Sa，Ssk，Sku，Str和Sdq）。在24小时，48小时和96小时之后，n之前（n = 18）和（n = 18）将植入物放置到猪肋骨中。结果，所有植入物的谷在植入物放置后的Sa值都有所增加。相比之下，手写笔A植入物的顶部和Tryon A植入物的侧面则分别显示出凹凸的平均高度（Sa）分别显着降低，分别为0.16μm和1.25μm。手写笔植入物在插入骨骼后的所有区域中，分布曲线上的不规则高度（Sku）均显着较高（不对称值）（顶部为6.99，侧面为9.54，山谷为17.64），这表明山谷中的峰更多。插入骨骼后，所有宏观几何形状的粗糙度梯度（Sdq）均增加。细胞培养结果显示，对于所有大型几何形状，骨放置后均无显着差异。总之，在所有宏观几何结构中，植入骨中后均检测到植入物表面粗糙度的细微变化，而不会显着影响所研究的细胞参数。

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