Sincan Oral Dental Health Center, 06930, Ankara, Turkey.
Department of Prosthodontics, Faculty of Dentistry, Alanya Alaaddin Keykubat University, 07490, Antalya, Turkey.
BMC Oral Health. 2022 Jul 19;22(1):299. doi: 10.1186/s12903-022-02323-x.
With the application of surface sealant agents, smooth surfaces can be achieved in a shorter time when compared with conventional polishing. However, studies on the performance of these agents against chewing forces are not many. The purpose of this study was to evaluate the surface roughness and Streptococcus mutans adhesion on surface sealent coupled interim prosthetic materials after chewing simulation.
One hundred and twelve specimens were fabricated from two poly(methyl methacrylate) (Tab 2000, Dentalon Plus) and two bis-acryl (Tempofit, Protemp 4) interim crown materials and divided into 4 groups (n = 7) according to applied surface treatment: conventional polishing (control) and 3 surface sealant (Palaseal, Optiglaze, Biscover) coupling methods. The surface roughness values (R) were measured with a profilometer before (Ra0) and after aging through dynamic loading in a multifunctional chewing simulator for 10,000 cycles at 50 N load combined with integral thermocycling (between 5 and 55 °C) (Ra1). Specimens were incubated with Streptococcus mutans suspension and the total number of adherent bacteria was calculated by multiplying the counted bacterial colonies with the dilution coefficient.
Surface sealant agent application significantly decreased the surface roughness compared with conventionally polished specimens, except for Optiglaze or BisCover LV applied Protemp 4 and Palaseal or Biscover LV applied Tempofit. Surface roughness after dynamic loading showed a statistically significant increase in all groups, except for the control groups of Tab 2000 and Protemp 4. A positive correlation was found between surface roughness values of interim prosthodontic materials and the quantitiy of Streptococcus Mutans.
Even though surface sealant agent application significantly decreased the surface roughness compared with conventionally polished specimens, dynamic loading significantly increased the surface roughness of all surface sealant coupled materials. The R values of all test groups were higher than the plaque accumulation threshold (0.20 µm). Streptococcus mutans adhered more on rougher surfaces.
与传统抛光相比，使用表面密封剂可以在更短的时间内获得光滑的表面。然而，针对这些试剂抗咀嚼力性能的研究并不多。本研究的目的是评估咀嚼模拟后表面密封剂偶联临时修复材料的表面粗糙度和变形链球菌黏附性。
用两种聚甲基丙烯酸甲酯（Tab 2000、Dentalon Plus）和两种双丙烯酸酯（Tempofit、Protemp 4）临时冠材料制作了 112 个试件，并根据应用的表面处理方法分为 4 组（n=7）：常规抛光（对照）和 3 种表面密封剂（Palaseal、Optiglaze、Biscover）偶联方法。用轮廓仪在动态加载多功能咀嚼模拟器 10000 次循环（50 N 负载）和整体热循环（5 至 55°C）之前（Ra0）和老化后（Ra1）测量表面粗糙度值（R）。将试件与变形链球菌悬浮液孵育，通过计数细菌集落乘以稀释系数计算黏附细菌总数。
除 Optiglaze 或 BisCover LV 应用于 Protemp 4 和 Palaseal 或 Biscover LV 应用于 Tempofit 外，表面密封剂的应用显著降低了与常规抛光试件相比的表面粗糙度。除 Tab 2000 和 Protemp 4 的对照组外，所有组的动态加载后的表面粗糙度均显示出统计学上的显著增加。临时修复材料的表面粗糙度值与变形链球菌数量之间存在正相关关系。
尽管与传统抛光相比，表面密封剂的应用显著降低了表面粗糙度，但所有表面密封剂偶联材料的动态加载都会显著增加表面粗糙度。所有测试组的 R 值均高于菌斑堆积阈值（0.20 µm）。变形链球菌更喜欢黏附在更粗糙的表面。
