摘要：OBJECTIVE: To compare the retention and caries formation rates of fissure sealants applied with an etch&rinse adhesive system (Adper Single Bond 2) or with an universal adhesive system (Single Bond Universal) used with etch&rinse mode or self-etch mode after 6 months. MATERIALS AND METHOD: Non-invasive fissure sealants of 13 patients (19-22 age) were evaluated. The fissure sealant (Fissurit FX, Voco, Cuxhaven, Germany) was placed after three different pretreatment procedure and then polymerized; Group A: 35% phosphoric acid gel + Adper Single Bond 2 (3M ESPE, St Paul MN, USA), Group B: 35% phosphoric acid gel + Single Bond Universal adhesive (3M ESPE, St Paul MN, USA), Group C: Single Bond Universal adhesive. All the materials were used according to the manufacturers’ recommendations. A total of 144 teeth were sealed (n=48 in each group). The retention of fissure sealants and caries formation was evaluated by two calibrated examiners at one week and six month recalls. The evaluation criteria for retention were 1=full retention, 2=partial loss, 3=total loss. Data were analyzed with Pearson chi square test. RESULTS: The recall rate was 100% at the 6-month control. Retention rates at 6-months were as follows: Group A: full retention: 93.75% and total loss: 6.25% of the sealants; Group B: all sealants were recorded to exhibit full retention; Group C: full retention: 29.2%, partial loss: 2.1% and total loss: 68.8% of the sealants. Differences between Group C and the other groups were statistically significant (p<0.001). No caries was detected at the 6-month control. CONCLUSION: Single Bond Universal adhesive used in a selfetch mode showed a clinically low performance
