摘要
目的：测试Ｄｙｒａｃｔ的理化性能。方法：用拉力机、显微硬度机测试。结果：固化深度光照４０ｓ达８ｍｍ；径向拉伸强度４２．４±７．１６ＭＰａ，性能相似于复合树脂Ｄｕｒａｆｉｌ和Ｐｅｋａｌｕｘ；表面硬度为ＨＶ３１．９±３．８４，也近似Ｄｕｒａｆｉｌ和Ｐｅｋａｌｕｘ；剪切粘结强度为８．５４±２．０５ＭＰａ，温度交替后为８．４１±２．５０ＭＰａ。
Aim:The physicochemical characteristics of Dyract were tested. Methods:Tension test machine and microhardness tester were used. Results: The curing depth by light for 40s was 8mm. Diametral tensile strength of Dyract was 42.4±7.16 MPa, similar to that of Durafill 38.09±7.83, and Pekalux 31.11±5.55. The surface hardness of Dyract was 31.9±3.84(HV), similar to that of Durafill 27.52±1.23 and Pekalux 21.68±1.98. The shear bond strength of Dyract was 8.54±2.05MPa, and 8.41±2.50MPa after thermocycling. Conclusionns: Dyract is a new type filling material for anterior teeth and deciduous teeth.
出处
《牙体牙髓牙周病学杂志》
CAS
1996年第2期75-76,共2页
Chinese Journal of Conservative Dentistry
关键词
牙科材料学
牙充填材料
DYRACT
理化性能
filling, surface hardness, diametral tensile strength, shear bond strength
