Influência da redução oclusal na ocorrência da dor pós-operatória após tratamento endodôntico: Um estudo clínico controlado e randomizado

Abstract

The aim of this study was to evaluate the influence of occlusal reduction on the occurrence of postoperative pain after endodontic treatment performed with WaveOne® Gold reciprocanting system, based on a prospective randmozed, double-blind clinical trial conducted at the UFAM Dentistry College. This study included 78 patients, mean age 28 years, randomly divided into 2 groups, with indication of endodontic treatment in molar teeth diagnosed with Pulpite Irreversible. In the experimental group (RO), the endodontic treatment with the Wave One® Gold system was performed and the occlusal reduction was performed. In the control group (SRO), the endodontic treatment was performed with the WaveOne® Gold system. All treatment was performed by the same operator. The pain evaluation was performed at 6, 24 and 72 hours intervals after the endodontic treatment was performed. The occurrence and intensity of pain were recorded on two pain scales: verbal description (VRS) and discrete numeral (NRS). The data were analyzed by the STATA® program by the Mann- Whitney, χ2 and Fisher test (p<0,05). In the experimental group, with occlusal reduction, 71.1% (n = 27) reported postoperative pain and in the control group 67.5% (n = 27). Both the number of individuals who reported pain and the magnitude of pain decreased over the analyzed period. In the 6h evaluation, 21 subjects reported pain in the experimental group and 24 in the control group (p=0,672). At 24 hours this quantitative was 18 and 19 (p=0,991) and at 72 hours 8 and 4 (p=0,219), respectively. No significant differences in postoperative pain intensity were found between the groups at 6 hours (VRS, p=0,719; NRS, p=0,547), 24 hours (VRS, p= 0,906; NRS, p= 0,987) and 72 hours (VRS, p= 0,178; NRS, p=0,176) for both the VRS and NRS scales. It was concluded that, within the limitation of the present study, occlusal reduction did not influence pain postoperative period in the teeth with irreversible pulpitis.