A Study on the Effect of the Wax Extension Method of Posterior Palatal Seal on the Vertical Occlusal Change of Processed Dentures

상악 시적의치의 후연 연장방법이 Resin 의치상의 변형에 미치는 영향에 관한 실험적 연구

This experimental study was performed to investigate the effect of the wax extension method of posterior palatal seal area, introduced by Vig, on the amount of the vertical occlusal change of processed dentures. Twenty samples of maxillary wax trial dentures were constructed. Among them, the posterior palatall seal of ten samples were extended with wax over the posterior wall of the cast while that of the other ten were not. Then all were processed with self-curing resin and the amount of the vertical occlusal change was compared. The obtained result was that this method was proved to be effective in reducing the amount of the vertical occlusal change occuring in denure proccsing.