[Comparison of wear between Iranian resin teeth and ivoclar teeth]

ABSTRACT

Wearing of acrylic denture teeth creates many problems for patients as well as dentists. Nowadays, artificial teeth are produced by different Iranian companies which compare to their foreign counterparts are more suitable economically. The aim of this study was to compare the amount of wear between Iranian resin teeth and Ivoclar teeth. In this study wear of three types of Iranian resin teeth [Berelian. Marjan, Super newclar] were compared with Ivoclar teeth. Four denture teeth samples were used for each denture teeth. All tests were done in presence of saliva and by using porcelain abrader. The thickness reduction of each sample was measured after 5000 and 10000 cycles with the help of a micrometer. The mean values were compared with ANOVA and T-student test. After 5000 and 10000 cycles there was no significant difference between the mean wear of Berelian teeth and Ivoclar teeth, but after 10000 cycles the mean wear of Ivoclar teeth was decreased and the mean wear of Berelian teeth was increased although this wear was not statistically significant. Comparison of three Iranian resin denture teeth indicated that Berelian teeth showed the least and Super newclar teeth show the maximum amount of wear. The amount of wear in Berelian was almost close to Ivoclar teeth. Therefore we can be hopeful that Iranian companies with improving their production techniques such as mixing the materials, temperature, duration of curing and packing of materials in vacuum can make high wear resistance acrylic teeth