dos Santos Paulo Henrique, Pavan Sabrina, Consani Simonides, Sobrinho Lourenco Correr, Sinhoreti Mario Alexandre Coelho, Filho Joao Neudenir Arioli
Department of Dental Materials and Prosthodontics, Araçatuba School of Dentistry, UNESP, Brazil.
Quintessence Int. 2007 May;38(5):e247-53.
This study evaluated the efficiency of repolishing, sealing with surface sealant, and the joining of both in decreasing the surface roughness of resin-based composites after a toothbrushing process.
Ten specimens of each composite (Alert, Z100, Definite, and Prodigy Condensable), measuring 2 mm in thickness and 4 mm in diameter, were made and submitted to finishing and polishing processes on both sides of the specimens using the Sof-Lex system. The specimens were then subjected to toothbrushing (30,000 cycles), and surface roughness (Ra) was analyzed with a Surfcorder SE 1700 profilometer. The upper surface of each composite was etched with 37% phosphoric acid, and the surface-penetrating sealant Protect-it was applied on 1 surface. The roughness of these surfaces was again measured. On the other side, the surface of the specimen was repolished, and the efficiency of this procedure was measured using the profilometer. The surface roughness resulting from the joining of the 2 methods was verified by applying, in the final stage, the surface-penetrating sealant on the repolished surface. Data were analyzed with analysis of variance and Tukey test (P <.05).
Results showed that the lowest surface roughness values were obtained for Definite, Z100, and Prodigy Condensable after the repolishing process and after the repolishing plus sealing. For Alert, the joining of repolishing plus sealing promoted the lowest values of surface roughness.
Of the resin-based composites, Alert demonstrated the highest values of surface roughness in all the techniques tested.
本研究评估了再抛光、用表面密封剂密封以及两者结合在刷牙过程后降低树脂基复合材料表面粗糙度方面的效率。
制作每种复合材料（Alert、Z100、Definite和Prodigy Condensable）的10个样本，厚度为2毫米，直径为4毫米，并使用Sof-Lex系统在样本的两面进行修整和抛光处理。然后对样本进行刷牙（30000次循环），并用Surfcorder SE 1700轮廓仪分析表面粗糙度（Ra）。每种复合材料的上表面用37%的磷酸蚀刻，在1个表面上涂抹表面渗透密封剂Protect-it。再次测量这些表面的粗糙度。在另一侧，对样本表面进行再抛光，并用轮廓仪测量该过程的效率。在最后阶段，通过在再抛光表面涂抹表面渗透密封剂来验证两种方法结合产生的表面粗糙度。数据采用方差分析和Tukey检验进行分析（P<.05）。
结果表明，在再抛光过程以及再抛光加密封后，Definite、Z100和Prodigy Condensable获得了最低的表面粗糙度值。对于Alert，再抛光加密封的结合产生了最低的表面粗糙度值。
在所有测试技术中，Alert在树脂基复合材料中表面粗糙度值最高。
