口腔材料器械杂志
口腔材料器械雜誌
구강재료기계잡지
Chinese Journal of Dental Materials and Devices
2015年
3期
118-122
,共5页
烧结%玻璃陶瓷%二硅酸锂%色彩参数%透光性
燒結%玻璃陶瓷%二硅痠鋰%色綵參數%透光性
소결%파리도자%이규산리%색채삼수%투광성
Sintering%Glass-ceramic%Lithium disilicate%Color parameter%Translucency
目的 探究烧结次数对二硅酸锂玻璃陶瓷的颜色(△E)和透光性(τ)的影响.方法 采用热压铸工艺制作二硅酸锂玻璃陶瓷(IPS e.max Press)片状试件(直径10mm,厚度1mm)30个.打磨抛光后按照随机列表法将试件随机分为6组,每组5个.在烤瓷炉中分别烧结0(对照组)、1、2、3、4、5次,用分光测色计和透光率测试仪分别测量各试件的色彩参数(L*a*b*)和透光性(τ),并计算出色差(△E).应用SPSS17.0软件进行统计分析.每组中随机抽取2个试件用X线衍射仪(XRD)分析其晶相组成.结果 试件反复烧结后的色差变化范围为0.88~2.45,明度值明显降低(P<0.05),a*、b*、τ值明显增大(P<0.05). 在多次烧结后试件的晶相保持不变,主晶相(Li2Si2O5)的衍射峰强度增大.结论 烧结次数会影响二硅酸锂玻璃陶瓷基底冠的颜色和透光性,这可能与主晶相的晶体含量增加有关.
目的 探究燒結次數對二硅痠鋰玻璃陶瓷的顏色(△E)和透光性(τ)的影響.方法 採用熱壓鑄工藝製作二硅痠鋰玻璃陶瓷(IPS e.max Press)片狀試件(直徑10mm,厚度1mm)30箇.打磨拋光後按照隨機列錶法將試件隨機分為6組,每組5箇.在烤瓷爐中分彆燒結0(對照組)、1、2、3、4、5次,用分光測色計和透光率測試儀分彆測量各試件的色綵參數(L*a*b*)和透光性(τ),併計算齣色差(△E).應用SPSS17.0軟件進行統計分析.每組中隨機抽取2箇試件用X線衍射儀(XRD)分析其晶相組成.結果 試件反複燒結後的色差變化範圍為0.88~2.45,明度值明顯降低(P<0.05),a*、b*、τ值明顯增大(P<0.05). 在多次燒結後試件的晶相保持不變,主晶相(Li2Si2O5)的衍射峰彊度增大.結論 燒結次數會影響二硅痠鋰玻璃陶瓷基底冠的顏色和透光性,這可能與主晶相的晶體含量增加有關.
목적 탐구소결차수대이규산리파리도자적안색(△E)화투광성(τ)적영향.방법 채용열압주공예제작이규산리파리도자(IPS e.max Press)편상시건(직경10mm,후도1mm)30개.타마포광후안조수궤렬표법장시건수궤분위6조,매조5개.재고자로중분별소결0(대조조)、1、2、3、4、5차,용분광측색계화투광솔측시의분별측량각시건적색채삼수(L*a*b*)화투광성(τ),병계산출색차(△E).응용SPSS17.0연건진행통계분석.매조중수궤추취2개시건용X선연사의(XRD)분석기정상조성.결과 시건반복소결후적색차변화범위위0.88~2.45,명도치명현강저(P<0.05),a*、b*、τ치명현증대(P<0.05). 재다차소결후시건적정상보지불변,주정상(Li2Si2O5)적연사봉강도증대.결론 소결차수회영향이규산리파리도자기저관적안색화투광성,저가능여주정상적정체함량증가유관.
Objective To investigate the effects of sintering times on color and translucency of lithium disilicate glass-ceramic. Methods Thirty disc-shaped specimens were made from IPS e.max Press ingnots using lost-wax and hot-pressed ceramic fabrication technology and randomly divided into six groups, each group of five specimens. The color parameter (L*a*b*) and the translucency parameter (τ) of these specimens after different times of sintering (0, 1, 2, 3, 4 and 5 times) were measured and calculated by spectrocolorimeter and transmitivity test apparatus. The data were analyzed statistically using SPSS17.0 software. Then two specimens from each group were selected to analyze the crystal phase by XRD. Results After repeated sintering, the chromatic aberration ranged from 0.88 to 2.45. With the increasing of sintering times, there were significant reductions in L*(P<0.05) and increases in a*,b*,τ(P<0.05). XRD test showed that the crystal phases were not changed after repeated sin-tering, and the intensity of diffraction pattern of Li2Si2O5 was increased. Conclusion Repeated sintering affected the color and translucency of the lithium disilicate glass-ceramic, which might be related to the increased contents of main crystal phase.
