摘要
目的测定不同颜色不同厚度的Cerinate瓷贴面透射率的大小,并与相同颜色及厚度的牙釉质片的透射率进行比较。方法制作不同颜色(A1、A2、A3色)、不同厚度(0.50mm、0.75mm、1.00mm)的Cerinate瓷贴面及不同厚度的(0.50mm、0.75mm、1.00mm)A2色牙釉质片,用分光光度计测量其在可见光光谱范围内的透射率。结果随着颜色的加深和厚度的增加,Cerinate瓷贴面的透射率逐渐减小。其中厚度对瓷贴面透射率的影响较大(P<0.01),而颜色对透射率影响较小(P>0.05)。当瓷贴面厚度达到0.75mm及以上时,相同颜色的Cerinate瓷贴面与牙釉质片的透射率的差别无统计学意义(P>0.05)。结论影响瓷贴面透射率的主要因素是贴面的厚度,Cerinate瓷贴面可以再现自然牙齿所特有的通透性。
Objective To measure the spectral transmittance of Cerinate porcelain veneer and enamel in different color and different thickness. Methods Samples of Cerinate porcelain veneers were prepared in different thickness （0.50mm,0.75 mm, 1.00 mm） and different Vita shade（A1,A2,A3）. Enamel samples in shade A2 were made with three thickness（0.50 mm,0.75 mm, 1.00 mm）. A spectrophotometer with spectra range （380-800 nm） was employed to measure the spectral transmittance. Results Spectral transmittance decreased with the increasing in the thickness of specimens and decreasing in the color darkness. The transmittance of Cerinate porcelain veneer material and enamel in the same color and same thickness hadn＇t significant difference. Conclusion The key factor to spectral transmittance of porcelain veneer materials is veneer＇s thickness, and the color of the materials has also some influence on it. Cerinate porcelain veneers can properly recover the transparency of teeth.
出处
《华西口腔医学杂志》
CAS
CSCD
北大核心
2006年第6期513-515,共3页
West China Journal of Stomatology
关键词
瓷贴面
透射率
牙釉质
porcelain veneer
spectral transmittance
enamel
