Influence of air abrasion and different dentin sealing techniques on microtensile bond strength to dentin / 대한치과보철학회지

PURPOSE: The purpose of this study was to evaluate the effect of various methods of dentin bonding agent application and air abrasion pretreatment on microtensile bond strength between dentin and resin, using a self-etching adhesive system. MATERIAL AND METHODS: Thirty freshly extracted human molars were obtained and divided into 6 groups of 5 teeth. A 2-step self etching adhesive system (Clearfil SE Bond) was used for all groups. The control specimens were prepared using a direct immediate bonding technique. The delayed dentin sealing specimens were prepared using an indirect approach without dentin prebonding. The immediate dentin sealing specimens were prepared using dentin prebonding immediately following preparation. Immediate dentin sealing teeth and delayed dentin sealing teeth had provisional restorations using Fermit for two weeks. Then all specimens of each group were divided into two groups of three, depending on air abrasion pretreatment. Composite "crowns" were incrementally built on and specimens were stored in water for 24 hours. All teeth were prepared for a microtensile bond strength test. Bond strength data were analyzed with a one-way ANOVA test, and post hoc comparison was done using the Scheffe's test. RESULTS: The mean microtensile bond strengths of all groups were not statistically different from each other. CONCLUSION: When preparing teeth for indirect restorations, IDS and DDS with Clearfil SE bond, have no difference on the microtensile bond strength between dentin and resin. Air abrasion pretreatment did not affect the microtensile bond strength when using IDS and DDS with Clearfil SE bond.

Direct pulp capping with a self-etching adhesive and calcium hydroxide on human pulp / 实用口腔医学杂志

Objective:To evaluate the human pulp response following direct pulp capping with Clearfil SE BOND (SB). Methods:45 sound human third molars in 24 volunteers were used. Pulp of 41 molars was mechanically exposed and then the teeth were divided into two groups: in group A the pulp was capped with SB, in group B the pulp was capped with calcium hydroxide (CH), another 4 teeth were served as the control. After 7, 30 and 90 days, the teeth were extracted and processed for light microscopic examination. Results:7-30 days after capping slight inflammatory reaction was observed in group A and group B. The reaction in group A was sligter than that in group B(P