バイオセラミックを応用した3種類のシーラーにおけるせん断接着強さの研究

抄録

Abstract : Purpose : The aim of this study was to evaluate the push-out bond strength of three types of bio-ceramic sealer : Nishika Canal Sealer^® BG, iRoot SP^® and Well-Pulp ST^®.

 Materials and Methods : Forty human single-rooted teeth were prepared using NiTi-rotary instruments and divided into four groups (N=10) according to the root canal sealer used : Nishika Canal Sealer^® BG, iRoot SP^®, Well-Pulp ST^® and Nishika Canal Sealer^® (control). Then the roots were obturated with each sealer, and the obturated teeth were stored in an incubator for one week. One-mm-thick slices were obtained from each root sample (n=10). The bond strength of each group was measured using a push-out test. The data were analyzed statistically by one-way analysis of variance, followed by Tukey-Kramer multiple tests.

 Results : The Well-Pulp ST^® group showed the highest bond strength and the Nishika Canal Sealer^® BG group showed the lowest. Significant differences of bond strength were found between the iRoot SP^® group and each test group except the Well-Pulp ST^® group (p<0.01).

 Conclusion : Nishika Canal Sealer^® BG showed a significantly lower push-out bond strength than iRoot SP^® and Well-Pulp ST^®.