【摘要】：目的:比較釉瓷上釉和不同打磨拋光磨頭處理后,烤瓷表面粗糙度的不同,為臨床選擇拋光方法提供實驗依據(jù)。方法:制作圓盤狀瓷片70片,隨機分為7組(n=10)。以釉瓷上釉作對照為第1組,第2組至第7組均用松風(fēng)氧化鋁白砂石打磨,第2組打磨后不做處理;第3組打磨后使用松風(fēng)Ceramiste烤瓷拋光套裝磨頭拋光;第4組在第3組的基礎(chǔ)上加用松風(fēng)Ceramaster精細(xì)烤瓷拋光磨頭拋光;第5組打磨后使用德國固美(Komer)烤瓷拋光套裝磨頭拋光;第6組打磨后使用固美氧化鋯拋光磨頭拋光;第7組打磨后使用德國EVE氧化鋯拋光磨頭拋光。對瓷片進行輪廓算術(shù)平均偏差(Ra)、輪廓的微觀不平度十點高度(Rz)、最大輪廓峰高(Rp)的測量,使用SPSS 16.0統(tǒng)計軟件對測量值進行單因素方差分析,并采用掃描電鏡對表面形態(tài)進行觀察。結(jié)果:第2、3組的Ra、Rp值均大于第1組(P0.05);第4、5、6、7組的Ra、Rp值與第1組差異無顯著性(P0.05);第2、3、4、5組的Rz值均大于第1組(P0.05);第6、7組的Rz值與第1組無顯著性差異(P0.05)。電鏡下觀察第6、7組與第1組瓷面平整度相似;第4、5組瓷面較平整,凹坑較少;第2、3組瓷面棱脊、凹坑較多。結(jié)論:使用打磨顆粒為微米級超細(xì)天然金剛砂的拋光磨頭能達到類似上釉的效果。
[Abstract]:Objective: to compare the surface roughness of porcelain with glazed glaze and grinding and polishing head, and to provide experimental basis for clinical selection of polishing methods. Methods: 70 discs were made and randomly divided into 7 groups (n = 10). The glazed porcelain was used as the control group, the second group and the seventh group were all polished with pine wind alumina white sand stone, the second group was not treated after grinding, the third group was polished with pine wind Ceramiste porcelain polishing suit. The fourth group was polished with pine wind Ceramaster fine porcelain polishing head on the basis of the third group; the fifth group was polished with German (Komer) porcelain polishing set after polishing; the sixth group was polished with solid zirconia polishing head after polishing; Group 7 was polished with EVE zirconia grinder in Germany. The microcosmic unevenness of (Ra), profile with arithmetic mean deviation of contours was measured by using the SPSS 16.0 software. The single factor analysis of variance of the measured value was carried out by using the SPSS 16.0 software. The surface morphology was observed by SEM. Results: the Ra,Rp value of group 2 was higher than that of group 1 (P0.05), the Ra,Rp value of group 4 was not significantly different from that of group 1 (P0.05), the Rz value of group 2 was higher than that of group 1 (P0.05). There was no significant difference in Rz between group 6 and group 1 (P0.05). Under electron microscope, the level of porcelain surface in group 6 and group 1 was similar, that in group 4 and group 5 was flat, and that in group 2 and group 3, there were more pits. Conclusion: the polishing head with micron size natural Emery can achieve similar glazing effect.
【作者單位】： 北京大學(xué)口腔醫(yī)院第三門診部綜合三科;
【分類號】：R783.3

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