CAJ | 학술논문

目的：比较二硅酸锂和白榴石基玻璃陶瓷在模拟咀嚼循环的条件下磨损行为的演变。方法：采用热压铸造技术制备白榴石基玻璃陶瓷（IPS Empress Esthetic ETC1型铸瓷）和二硅酸锂玻璃陶瓷（IPS e．max Press HT型铸瓷）试件，分别与滑石瓷配副，磨损条件为加载力10 N、转速200 r／min，磨损进行100万转次，使用三维形貌扫描仪在每10转万次循环节点测量磨损体积量，扫描电镜观测表面微观形貌。结果：10万转次白榴石基陶瓷磨损量多于二硅酸锂陶瓷，20万至100万转次后两者没有统计学差异。白榴石基陶瓷表面犁沟与碎片剥脱后的粗糙面交错分布，二硅酸锂陶瓷表面以深且宽大的犁沟为主。随着时间的演变，两种陶瓷的犁沟状磨痕逐渐表浅。结论：白榴石基玻璃陶瓷在磨损初期磨损量多于二硅酸锂陶瓷，磨损中后期的磨损量没有显著性差异。
목적：비교이규산리화백류석기파리도자재모의저작순배적조건하마손행위적연변。방법：채용열압주조기술제비백류석기파리도자（IPS Empress Esthetic ETC1형주자）화이규산리파리도자（IPS e．max Press HT형주자）시건，분별여활석자배부，마손조건위가재력10 N、전속200 r／min，마손진행100만전차，사용삼유형모소묘의재매10전만차순배절점측량마손체적량，소묘전경관측표면미관형모。결과：10만전차백류석기도자마손량다우이규산리도자，20만지100만전차후량자몰유통계학차이。백류석기도자표면리구여쇄편박탈후적조조면교착분포，이규산리도자표면이심차관대적리구위주。수착시간적연변，량충도자적리구상마흔축점표천。결론：백류석기파리도자재마손초기마손량다우이규산리도자，마손중후기적마손량몰유현저성차이。
Objective:To compare wear properties of leucite glass-ceramic and lithium disilicate glass-ceramic from the perspective of time-varying wear behavior. Method:Leucite reinforced glass-ceramic (IPS Empress Esthetic ETC1)and lithium disilicate glass-ceramic (IPS e.max Press HT) specimens were made by heat-pressed technology. The antagonist of steatite was subjected to the wear test method(a vertical force of 10N, one million cycles). The wear volume was mearsured by a three-dimensional profiler per 100,000 cycles,with SEM observing surface topography. Result:At 100,000 cycles vol-ume loss of leucite reinforced glass ceramic was more than lithium disilicate ceramic ,and there is no difference between the two ceramics after 200,000 cycles. At initial stage,leucite reinforced glass-ceramic showed the morphology of furrows and debris and lithium disilicate glass-ceramic demonstrated deep and wide furrows. With the evolution of time ,furrows of su-perficial and dense,the surface tends to be smooth. Conclusion:At initial stage,leucite reinforced glass-ceramic wore more than lithium disilicate glass-ceramic. However,there was no significant difference between the two heat-pressed glass ce-ramic at later stage.