Microleakage of Compoglass-F and Dyract-AP compomers in Class V preparations after salivary contamination.

PURPOSE The purpose of this study was to investigate the effect of salivary contamination on the microleakage within Class V preparations of teeth restored with either Compoglass-F/Syntac SC and Dyract-AP/Prime and Bond 2.1. METHODS Class V cavity preparations with occlusal margins in enamel and gingival margins in cementum were prepared on the buccal and lingual surfaces of extracted human permanent molar teeth. Preparations were distributed randomly into 4 treatment groups (N = 16) consisting of the two compomers and their respective bonding agents with and without salivary contamination. After treatment, the samples were stored in tap water for 24 hours, thermocycled, stained with dye, sectioned, and scored for microleakage. RESULTS Salivary contamination had no significant effect on enamel microleakage but significantly increased both linear and penetrating microleakage versus non-contaminated for both compomer/dentin bonding systems. CONCLUSION These data indicate salivary contamination adversely effects gingival but not enamel microleakage when Class V restorations are restored with either Compoglass F/Syntac SC or Dyract-AP/Prime and Bond 2.1.