IADR Abstract Archives
Randomized clinical trial of post-operative sensitivity: bulk-fill composite resin placement
Objectives: This double blind, randomized clinical trial compared the postoperative sensitivity of the placement technique (incremental and bulk fill) of resin restorations in posterior composite cavities using two different adhesive strategies (self-etch and etch-and-rinse).
Methods: The protocol followed the CONSORT statement for clinical trials. Seventy-two patients, with at least two posterior restorations, participated in this study. After sample size calculation, we randomly divided 236 posterior dental cavities with a cavity depth of at lest 3 mm, in four groups. Restorations were bonded either with the etch-and-rinse Tetric N-Bond (Ivoclar Vivadent) or the self-etch Tetric N-Bond SE (Ivoclar Vivadent). The composite resin Tetric N-Ceram Bulk Fill (Ivoclar-Vivadent) was placed either incrementally or in the bull fill technique. Two experienced and calibrated examiners performed the evaluation of the restorations using the FDI criteria after one week of clinical service. Spontaneous postoperative sensitivity was assessed using a 0-4 numerical rating scale, a 0-10 and 0-100 visual analog scale (VAS) up to 48 h after the restorative procedure and one-week later. Statistical analyses were performed with chi-squared test and Fisher’s exact test for the risk of postoperative sensitivity and with the Kruskall-Wallis and Mann-Whitney tests to compare the intensity of the postoperative sensitivity (α = 0.05).
Results: Neither the restorative technique nor the adhesive strategy affected the risk (p > 0.49) and intensity of spontaneous postoperative sensitivity (p > 0.38). The overall risk of postoperative sensitivity observed was 20.3% (95% CI 15.7-25.9) and occurred practically within the 48 h after the restorative procedure. Seventy-five percent (36/48) of the teeth with postoperative sensitivity was observed in only 11 patients.
Conclusions: The use of single increment of this new bulk fill material, even in deep restorations, did not generate more postoperative sensitivity when compared to an incremental filling technique.
Methods: The protocol followed the CONSORT statement for clinical trials. Seventy-two patients, with at least two posterior restorations, participated in this study. After sample size calculation, we randomly divided 236 posterior dental cavities with a cavity depth of at lest 3 mm, in four groups. Restorations were bonded either with the etch-and-rinse Tetric N-Bond (Ivoclar Vivadent) or the self-etch Tetric N-Bond SE (Ivoclar Vivadent). The composite resin Tetric N-Ceram Bulk Fill (Ivoclar-Vivadent) was placed either incrementally or in the bull fill technique. Two experienced and calibrated examiners performed the evaluation of the restorations using the FDI criteria after one week of clinical service. Spontaneous postoperative sensitivity was assessed using a 0-4 numerical rating scale, a 0-10 and 0-100 visual analog scale (VAS) up to 48 h after the restorative procedure and one-week later. Statistical analyses were performed with chi-squared test and Fisher’s exact test for the risk of postoperative sensitivity and with the Kruskall-Wallis and Mann-Whitney tests to compare the intensity of the postoperative sensitivity (α = 0.05).
Results: Neither the restorative technique nor the adhesive strategy affected the risk (p > 0.49) and intensity of spontaneous postoperative sensitivity (p > 0.38). The overall risk of postoperative sensitivity observed was 20.3% (95% CI 15.7-25.9) and occurred practically within the 48 h after the restorative procedure. Seventy-five percent (36/48) of the teeth with postoperative sensitivity was observed in only 11 patients.
Conclusions: The use of single increment of this new bulk fill material, even in deep restorations, did not generate more postoperative sensitivity when compared to an incremental filling technique.