Fox S C, Moriarty J D, Kusy R P
Periodontics Department, Branch Dental Clinic, Naval Air Station, Memphis, Millington, TN.
J Periodontol. 1990 Aug;61(8):485-90. doi: 10.1902/jop.1990.61.8.485.
The surface roughnesses of pure titanium implants were compared with scaling in vitro with curettes of dissimilar composition. Each of 10 transmucosal implant extensions (TIEs) was divided into three experimental surfaces and an untreated control surface. The three experimental surfaces were instrumented with either a titanium-alloy tipped curette, a curette of stainless steel, or a plastic curette. All experimental surfaces received 30 strokes with the designated curette within a 2 mm wide area. Alteration of the surfaces due to instrumentation was evaluated by a helium neon (HeNe) laser and reported as relative specular reflectance (RSR). Scanning electron microscopy (SEM) conformed the quantitative HeNe laser results. A significant decrease in mean RSR (greater roughness) was observed for surfaces treated by metal curettes compared to either untreated control surfaces (P less than 0.01) or surfaces treated by the plastic curette (P less than 0.01). No statistically significant difference was noted between untreated surfaces and those treated by the plastic curette. The titanium-alloy curette produced a significantly lower mean RSR (greater roughness) compared to those surfaces treated by the stainless steel curette (P less than 0.05). In summary, plastic instruments produced an insignificant alteration of the titanium implant surface following instrumentation, while metal instruments significantly altered the titanium surface.
将纯钛种植体的表面粗糙度与使用不同成分刮治器进行体外刮治的情况进行了比较。10个穿黏膜种植体延长部（TIEs）中的每一个都被分为三个实验表面和一个未处理的对照表面。三个实验表面分别用钛合金头刮治器、不锈钢刮治器或塑料刮治器进行处理。所有实验表面在2毫米宽的区域内用指定的刮治器刮30次。通过氦氖（HeNe）激光评估因器械处理导致的表面变化，并报告为相对镜面反射率（RSR）。扫描电子显微镜（SEM）证实了HeNe激光的定量结果。与未处理的对照表面（P<0.01）或用塑料刮治器处理的表面（P<0.01）相比，用金属刮治器处理的表面平均RSR显著降低（粗糙度增加）。未处理表面和用塑料刮治器处理的表面之间未观察到统计学上的显著差异。与用不锈钢刮治器处理的表面相比，钛合金刮治器产生的平均RSR显著更低（粗糙度增加）（P<0.05）。总之，器械处理后，塑料器械对钛种植体表面的改变不显著，而金属器械显著改变了钛表面。
