[Comparing the bond strength of four kinds of Ideal-Makoo artificial teeth [Iran] and two Leichtenstein and Italy Ivoclar teeth with prosthetic acrylic base]

ABSTRACT

This study has been established in order to compare the bond strength of four Iranian artificial teeth which are produced by Ideal Makoo - and two foreign types of Ivoclar [Liechtenstein and Italy] with denture base resins. In this experimental and cross sectional study, 6 teeth from each type of the artificial teeth were selected and on the whole, 36 teeth from each type of the artificial teeth were studied. This study was established according to standard ISO 3336, in which 6 stone molds were prepared using a standard brass block and the molds were used to produce 6 acrylic blocks which were each attached to 6 artificial teeth. Each acrylic block was sectioned in to 6 separate samples, so that each sample consisted of an artificial tooth attached to an acrylic part. The samples were tested by Instron 1195- a tension testing machine with the speed of 5 mm/min until fractured. The results were reported in kilogram and were analyzed using the ANOVA statistical test. The results revealed that Liechtenstein Ivoclar had the highest mean bonding force [67.5 11.7 kg] with and Marjan artificial tooth proved to have the lowest mean bonding force [50.3 9.3 kg]. It should be noted that the difference of mean strength of Super Brelian and Liechtenstein Ivoclar was only 1 kilogram. Regarding the bond strength, Liechtenstein's Ivoclar would be introduced as the most superior specimen. However, Super Brelian had a very slight difference with Liechtensteins' Ivoclar