2016 Volume 79 Issue 2 Pages 70-76
A singleunit crown placed in the mouth was checked to observe dynamic changes in interproximal distance one month after cementation. The subjects were 4 males and 3 females with an average age of 57 years for whom a total of 6 anterior teeth and 7 molars received crown prostheses. The prostheses were fabricated following conventional procedures, and placed in the mouth with an 80 μm interproximal distance. The pocket depth, tooth mobility, oc clusal contact areas and points, and interproximal distance between the proximal teeth were measured. Periotest was used to measure clinical tooth mobility. An occlusal checker and a tooth contact analyzing device were used to measure the occlusal contact points and area. Measurements of the crown were made immediately after placement and one month later. The Wilcoxon ranksum test was performed (p＜0.05). There was no significant difference observed in any of the measurement factors. The initial interproximal distance of the crown prostheses was 80 μm, and there was no marked change in the interproximal distance mesially or distally one month after placement. We considered that a longer period of observation is needed to elu cidate dynamic changes in the interproximal distance.
