二氧化锆与钴铬合金修复体精细抛光后对天然牙磨耗的影响

摘要/Abstract

摘要： ［摘要］目的研究临床上精细抛光对二氧化锆及钴铬合金修复体材料与天然牙间磨耗的影响。方法使用表面粗糙度仪测量修复体材料抛光前后的粗糙度值（Ra）。在摩擦磨损测试机上，模拟口腔内的力学和化学环境，进行天然牙与不同处理的修复体材料间的摩擦磨损实验，测量两者间摩擦系数（μ）。测量实验前后各磨擦对象的自身质量损失（Δm），扫描电镜观察实验后天然牙表面。结果各实验组中表面Ra，不烧结饰瓷抛光组（0.933±0.186）μm小于不抛光组（2.350±0.327）μm（P=0.000）；烧结饰瓷组抛光组（2.300±0.189）μm小于不抛光组（4.200±0.871）μm（P=0.000）；钴铬合金抛光组（0.250±0.083）μm小于不抛光组（1.200±0.894）μm（P=0.000），有统计学意义。对磨天然牙自身质量损失量（Δm），不烧结饰瓷抛光组（6.067±0.921）mg小于不抛光组（16.690±2.113）mg（P=0.001）；烧结饰瓷抛光组（5.893±0.838）mg小于不抛光组（14.016±0.063）mg（P=0.000）；钴铬合金抛光组（4.573±1.954）mg小于不抛光组（11.433±1.087）mg（P=0.008）有统计学意义。各组修复材料自身质量损失量（Δm）不烧结饰瓷抛光组（0.300±0.010）mg小于不抛光组（0.800±0.010）mg（P=0.001）；烧结饰瓷抛光组（0.456±0.055）mg小于不抛光组（0.650±0.086）mg（P=0.031）；钴铬合金抛光组（10.236±0.357）mg小于不抛光组（14.300±0.526）mg（P=0.000）有统计学意义。抛光组的摩擦系数：不烧结饰瓷氧化锆0.068，烧结饰瓷热氧化锆0.095，钴铬合金0.063明显小于不抛光组不烧结饰瓷二氧化锆0.096,烧结饰瓷二氧化锆0.119，钴铬合金0.103，差异有统计学意义。结论修复体表面精细抛光，可以有效降低其表面粗糙度，减小其与牙釉质间的摩擦系数，避免天然牙的过度磨耗。

关键词: 抛光, 磨耗, 天然牙, 二氧化锆, 钴铬合金

Abstract: Objective　To investigate the effect of fine polishing on the abrasion between natural tooth and zirconia, or cobalt-chromium alloy. Methods　The surface roughness value was measured to analyze surface roughness of zirconia, glazed-zirconia and cobalt-chromium alloy before and after fine polishing. The friction coefficient between restoration materials and natural enamel was measured, friction and wear experiment was carried out between natural tooth and three kinds of materials under presupposed condition, which simulated oral chemistry environment by artificial saliva and mechanical property by wear and abrasion test machine. Every sample was weighed pretest-posttest to calculate volume loss. Scanning electron microscopy was used to analyze surface characteristic of post-experiment natural tooth. Results　The roughness value of polished zirconia group(0.933±0.1862)μm was significantly smaller than ziconia group(2.350±0.327)μm without polishing(P=0.000).Polished glazed-zirconia group (2.300±0.8718)μm and glazed-zirconia group(4.200±0.1897)μm, polished cobalt-chromium ally group (0.250±0.083)μm and cobalt-chromium ally group (1.200±0.894)μm had the same result(P=0.000).The volume loss of natural tooth for polished zirconia group(6.067±0.9212)mg was significantly smaller than zirconia group(16.690±2.113)mg without polishing(P=0.001).Polished glazed-zirconia group(5.893±0.838)mg and glazed-zirconia group(14.016±0.063)mg(P=0.000), polished cobalt-chromium ally group(4.573 ±1.954)mg and cobalt-chromium group(11.433±1.087)mg(P=0.008) had the same result. The volume loss of restoration for polished zirconia group(0.300±0.010)mg was significantly smaller than zirconia group(0.800±0.010)mg without polishing(P=0.001).Polished glazed-zirconia group(0.456±0.055)mg and glazed-zirconia group(0.650±0.086)mg(P=0.031), polished cobalt-chromium ally group(10.236 ±0.357)mg and cobalt-chromium group(14.300±0.526)mg(P=0.000) had the same result. The friction coefficient between polished zirconia and natural tooth(0.068) was significantly smaller than that between zirconia and natural tooth(0.096)(P=0.001).Glazed-zirconia and cobalt-chromium ally had the same result(P=0.001). Conclusions　Fine polishing significantly reduce the roughness of restoration surface and the friction coefficient between restoration and natural tooth, so it can avoid severe tooth wear.

Key words: polishing, abrasion and wear, natural tooth, Zirconia, CoCr alloy

中图分类号:

R783.2

崔丹刘逵仲张兆钰张雪孙宇. 二氧化锆与钴铬合金修复体精细抛光后对天然牙磨耗的影响[J]. , 2018, 38(1): 10-14.

参考文献

[1] Conrad HJ，Seong WJ，Pesun IJ． Current ceramic materials and systems with clinical recommendations: a systematic review［J］． J Prosthet Dent，2007，98( 5) : 389 － 404．
[2] Ｒekow ED，Silva NＲ，Coelho PG， et al． Performance of dental ceramics:challenges for improvements［J］． J Dent
Ｒes，2011，90( 8) : 937 － 952．
[3] Motro PF，Kursoglu P，Kazazoglu E． Effects of different surface treatments on stainability of ceramics［J］． J Prosthet Dent， 2012，108( 4) : 231 － 237．
[4] Al-Wahadni AM,Matin DM.An in vitro investigation into the wear effects of glazed,unglazed and refinished dental proclean on an opposing material [J].J Oral Rehabil,1999,26(6):538-546.
[5]Jagger DC,Harrison A. An in vitro investigation into the wear effects of selected restorative materials on dentine[J].J Oral Rehabil, 1995,22(5):349-354.
[6] Preis V，Behr M，Kolbeck C， et al． Wear performance of substructure ceramics and veneering porcelains［J］． Dent Mater，2011，27( 8) : 796 － 804．
[7] Mayworm CD,Camargo SS,Bastian FL. J Dent[J],2008,36:703.
[8]Dowson D.History of Tribology[M].London:Professional Engineering Publishing Limited,1998:577.
[9]Rilo B, Fernandez J, DaSilivaL et al, J of Oral Rehabilitation[J],2001,28(10):930.
[10] Vieira GF，De Caroli A，Amorim JC， et al． The influence of the surface treatment and saliva on the color of two porcelains［J］．Dent Mater J，2001，20( 2) : 127 － 134．
[11] Fairhurst CW，Lockwood PE，Ｒingle ＲD， et al． The effect of glaze on porcelain strength［J］． Dent Mater， 1992，8( 3) : 203 － 207．
[12]罗正国，蒲竞秋．表面结构与粗糙度测量方法浅析［J］．工具技术，2006，40( 3) : 123 － 125．
[13]张凯，吴风鸣.抛光对2种全瓷材料表面粗糙度及磨耗性能的影响[J].口腔医学,2014，34(1):39-42.
[14]Embong A, Glyn-Jones J, Harrison A.Dent Mater[J],1987,3:236
[15]常晶.天然牙与牙科修复材料的摩擦学研究[J].临床口腔医学杂志,2008,24(9):570-571.
[16] Kim MJ，Oh SH，Kim JH， et al． Wear evaluation of the human enamel opposing different Y-TZP dental ceramics and other porcelains［J］． J Dent， 2012，40( 11) : 979 － 988．
[17] Suputtamongkol K，Anusavice KJ，Suchatlampong C， et al． Clinical performance and wear characteristics of veneered lithia-disilicatebased ceramic crowns［J］． Dent Mater， 2008， 24( 5) : 667 － 673．
[18] Janyavula S，Lawson N，Cakir D， et al． The wear of polished and glazed zirconia against enamel［J］． J Prosthet Dent，2013，109( 1) : 22 － 29．
[19] Mitov G，Heintze SD，Walz S， et al． Wear behavior of dental Y-TZP ceramic against natural enamel after different finishing procedures［J］． Dent Mater， 2012，28( 8) : 909 － 918．
[20] Seghi ＲＲ，Ｒosenstiel SF，Bauer P． Abrasion of human enamel by different dental ceramics in vitro［J］． J Dent Ｒes，1991，70( 3) :221 － 225．
[21] Oh WS，Delong Ｒ，Anusavice KJ． Factors affecting enamel and ceramic wear: a literature review［J］． J Prosthet Dent，2002，87( 4) : 451 － 459.
[22] Lu Jiajun(刘家浚).Wear Mechanism and Wear Resistance of Materials(材料磨损原理及其耐磨性)[M].BeiJing:Tsinghua University Press,1993:158.
[23]刘亦洪，王琳. 不同表面处理方法对氧化锆与天然牙磨损性能的影响[J]. 稀有金属材料与工程，2011,40（1）：143-146.