摘要
目的测定不同颜色不同厚度的E-max瓷块下光固化树脂能否充分固化,以利于指导临床E-max瓷贴面美学修复过小牙、扭转牙时,贴面最大厚度的设定。方法采用傅立叶变换红外光谱技术测量不同颜色(A1、B1、C1、A4、B4、C4)和不同厚度(2.0 mm、2.2 mm、2.4 mm、2.6 mm、2.8 mm、3.0 mm)CEREC制作E-max瓷片下光固化复合树脂的相对固化率。结果当光照时间为120 s时,A1、B1、C1色陶瓷厚度≤2.6 mm时可使树脂充分固化,A4、B4、C4色陶瓷厚度≤2.2 mm时可使树脂充分固化。浅色陶瓷间的固化率无统计学差异(P>0.05),同一厚度下浅色陶瓷与深色陶瓷间的固化率有统计学差异(P<0.01),深色陶瓷下树脂的固化率明显低于浅色陶瓷。结论随着颜色的加深和厚度的增加树脂的固化率明显下降,说明E-max瓷片的厚度和颜色对光固化树脂的固化率有明显影响。
Objective To determine whether under the E-max ceramic block with different thicknesses and different colors the light cured resin can be fully cured, to facilitate clinical E-max ceramic veneer aesthetic restoration of microdontia, teeth when reversed, and to set the maximum thickness of the stick side. Methods By using Fourier transform infrared spectroscopy, the curing rate of light composite resin of E-MAX porcelain block was measured by CEREC chip with different colors （A1, A4, B1, B4, C1, C4） and differ- ent thicknesses （2.0 ram, 2.2 mm, 2.4 ram, 2.6 ram, 2.8 ram, 3.0 mm） . Results When the illumination time was 120 s, and A1, B1, C1 color ceramic thickness was less than or equal to 2.6ram, the resin was fully cured. When A4, B4, C4 color ceramic thickness was less than or equal to 2.2 mm, the resin was fully cured. Curing rate was not statistically different between the light colored ceramics （P〉0.05）. There was a statistical difference in the cure rate between the light colored ceramic and the dark ceramic （P〈0.01）. The cure rate of the resin of dark ceramic was obviously lower than that of the light colored ceramic. Conclusion The curing rate of the resin obviously decreases with the increase of the ceramic color and the thickness, the thickness and color of E-max ceramic have obvi- ous influence on the cure rate of light cured resin.
出处
《口腔医学》
CAS
2018年第2期135-137,165,共4页
Stomatology
关键词
E-max瓷块
光固化树脂
固化率
红外光谱
E-max ceramic block
light cured resin
cure rate
infrared spectroscopy
