Aravind Prasad, Razak P Abdul, Francis P G, Issac Johnson K, Shanoj R P, Sasikumar T P
Department of Prosthodontics, MES Dental College, Perinthalmanna, Malappuram, Kerala, India.
J Int Oral Health. 2013 Oct;5(5):59-64. Epub 2013 Oct 26.
To compare the effect of four different finishing systems and diamond paste on ceramic roughness with the objectives of evaluating the roughness of ceramic surface of prepared specimens after abrasion, finishing and polishing.
MATERIALS & METHODS: A total of 50 test specimens were fabricated in the form of discs of diameter 13mm and 0.6mm thickness. Test specimens were then randomly distributed into five groups of 10 and coded. All the test specimens were then abraded with 125μm diamond in unidirectional motion to create surface roughness that will simulate occlusal or incisal correction. The values were recorded and the specimens were then finished using the various finishing systems. multiple range tests by Duncan's procedure. One way Anova was used to calculate the p-value Results:After fini shing, the Ra,Rq,Rz and Rt values showed a tendency to decline to levels much inferior to the values obtained after the preparation of the specimens. Ra values of group III specimens were slightly higher and the increase was significant. The highest Rt value [5.29] obtained after polishing is below the lowest roughness values [7.42] obtained after finishing the specimens.
Finishing and polishing procedures have a significant role in reducing the roughness of ceramics.Following abrasion with diamond point to simulate clinical adjustment the roughness values doubled when compared to the initial reading.Ra, Rq,Rz and Rt values suggest that Sof lex is the most efficient of all the systems tested followed by auto glazing.After the final diamond paste polishing, sof lex group specimens showed the best finish and auto glazed specimens showed a value almost as equal to the so flex group. How to cite this article: Aravind P, Razak PA, Francis PG, Issac JK, Shanoj RP, Sasikumar TP. Comparative Evaluation of the Efficiency of Four Ceramics Finishing Systems. J Int Oral Health 2013; 5(5):59-64.
比较四种不同的精修系统和金刚石膏对陶瓷粗糙度的影响，旨在评估经过研磨、精修和抛光后制备试样的陶瓷表面粗糙度。
总共制作了50个测试试样，呈直径13mm、厚度0.6mm的圆盘状。然后将测试试样随机分为五组，每组10个并进行编码。接着，所有测试试样均使用125μm的金刚石以单向运动进行研磨，以产生模拟咬合或切缘矫正的表面粗糙度。记录这些数值，然后使用各种精修系统对试样进行精修。采用邓肯法进行多重极差检验。使用单因素方差分析计算p值。结果：精修后，Ra、Rq、Rz和Rt值呈现出下降趋势，降至远低于试样制备后所获得的值的水平。第三组试样的Ra值略高，且这种增加具有显著性。抛光后获得的最高Rt值[5.29]低于试样精修后获得的最低粗糙度值[7.42]。
精修和抛光程序在降低陶瓷粗糙度方面具有重要作用。在用金刚石尖模拟临床调整进行研磨后，粗糙度值与初始读数相比增加了一倍。Ra、Rq、Rz和Rt值表明，Sof lex是所有测试系统中效率最高的，其次是自动上釉。在最终使用金刚石膏抛光后，Sof lex组试样显示出最佳的光洁度，自动上釉的试样显示出的值几乎与Sof lex组相等。如何引用本文：Aravind P, Razak PA, Francis PG, Issac JK, Shanoj RP, Sasikumar TP. 四种陶瓷精修系统效率的比较评估。《国际口腔健康杂志》2013年；5(5):59 - 64。
