Influence of Hemostatic Treatment on the Adhesion of Bonding Material to Dentin

SUGASHIMA Shoei, OKADA Hidetoshi, MATSUBUCHI Shiho, SASAKI Shigeo, NAKAJIMA Taisei, KAWASHIMA Isao, HAMADA Setsuo

doi:10.11471/shikahozon.51.9

With the advances in adhesive technology in recent years, the application of resin to crown restorations has increased in dental practice. Previous studies reported that the bond strength is reduced when the tooth surface is contaminated by saliva and/or blood probably because the contaminants per se may inhibit adhesion. In clinical practice, a hemostat is applied to the site of bleeding and then rinsed, dried and finally removed. However, the hemostat applied may remain on the adhered surface and affect the bond strength of bonding material to dentin. In order to confirm the tooth surface treatment effect of Bosmin® (Daiichi Sankyo Company), possible structural changes in the dentin surface after Bosmin® treatment were examined by atomic force microscopy (AFM) and compared with those after treatment with phosphoric acid and diluted hydrochloric acid used as a control in this study. We also examined whether or not the adhesive strength of Bosmin® is altered by different times of application. When the results of AFM observation were compared between Bosmin®-, phosphoric acid- and diluted hydrochloric acid-treated groups with reference to the image of the untreated group as a baseline, a concave surface in the superficial layer of dentin was encountered loss frequently in the phosphoric acid- and diluted hydrochloric acid-treated groups with more flattened AFM images. In the Bosmin®-treated group as compared with the untreated group, on the other hand, a concave surface was observed throughout the assessed superficial layer of dentin in an almost uniform manner after 15-second treatment. After 1-minute treatment with Bosmin®, a fine concave surface was observed less frequently as compared with the image after 15-second treatment but more frequently as compared with that in the untreated group. In the test on bond strength, the strength was significantly lower in the control phosphoric acid- and diluted hydrochloric acid-treated groups as compared with the untreated group, while both the Bosmin® 15-second treated group and 1-minute treated group showed a significantly higher strength as compared with the untreated group. From the evidences mentioned above, it was confirmed that Bosmin® has an excellent tooth surface treatment effect.

Influence of Hemostatic Treatment on the Adhesion of Bonding Material to Dentin

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