Adhesion to affected dentin after enzymatic caries removal

Objective: The aim of the study was to evaluate the compatibility of an enzymatic caries removal system SFC-V with adhesive filling therapy. Methods: Freshly extracted human sound teeth [ST] (n=2) and carious teeth [CT] with lesions extending into dentin (n=2) were each treated with SFC-V in combination with a dedicated plastic instrument and polymer brush. Control was conventional bur treatment [BT] for each Group (n= 2 per Group). Teeth were restored with Single Bond 1XT and Z 250 [both 3M ESPE]. Evaluation of micro tensile bond strength (ƒÝTBS) (modified methodology - ref) and dentin-adhesive interface by FE-SEM was carried out. For the ƒÝTBS, a non-trimming test design with a specimen surface area of 1 mm2 was used. Results: ƒÝTBS are shown in the Table, values with same letter are statistically equal. The SEM interfaces showed comparable sealing results for all samples. Statistical analysis was done, using ANOVA at 95 % confidence level. Statistics analysis revealed, that ƒÝTBS were equal for RB and SFC-V on sound dentin and statistically significantly lower for RB and SFC-V on carious dentin. Conclusion: Reduced ƒÝTBS to carious dentin is known for bur treatment. The data shows that the retention and sealing of fillings in SFC-V treated cavities is similar to that of bur treatment. Ref : Pashley et al, J Adhes Dent 1999;1:299-309.