Reduction of Post-endodontic Pain After RCT When Intracanal Cryotherapy is Used. — PEP  

Post Operative Pain Clinical Trial

Official title: Reduction of Post-endodontic Pain After Single-visit RCT Using Balanced Force and Two Reciprocating System When Intracanal Cryotherapy is Used.

Status Completed

Clinical Trial Summary

The goal of this research was to relate the occurrence of post-endodontic pain after single-visit RCT using Balanced Force technique and two reciprocating system when cryotherapy is used. Methodology: All 216 patients had upper or lower molar, premolar or anterior teeth selected for conventional RCT for prosthetic reasons detected with only vital pulps. Of the sample of 216 teeth, were selected to the 3 instrumentation methods. For hand instrumentation, Balanced Force were used. All canals were clean and shaped with hand Flex-R files (fMoyco/Union Broach, York PA, USA). For mechanical shaping, all instruments were used with a micro motor (VDW, Munich Germany). WaveOne and Reciproc instruments. Final irrigation with cold (6oC) 17% EDTA served as a lubricant.

Clinical Trial Description

Patient selection Two hundred and sixteen of 245 patients (119 women and 97 men) aged 18-65 years were incorporated in this research while 29 were excluded as not meeting the inclusion criteria. (Fig. 1). Sample size estimate was achieved according with a method for this specific purpose (Cochran's method, 1986). Therefore, the 56 teeth allocated to each group were adequate to confirm an essential sample size.

For hand instrumentation, the Balanced Force technique was used. All root canals were shaped with hand Flex-R files (Moyco/Union Broach, York PA, USA). Gates-Glidden drills (Dentsply Maillefer) sizes #2 and #3 were used at the orifice of the root canals. For mechanical preparations, all instruments were used with a micro motor (VDW Silver Motor, VDW, Munich Germany). Torque and rotation were preset for each Reciproc or WaveOne instrument. Rotary Ni-Ti instruments were used in continuous brushing rotary motion and reciprocating mode respectively.

Dentinal debris was eliminated from the file with a gauze, instantaneously to the instrument change (WaveOne) or after 2-3 in-and-out (pecking) movements (Reciproc) following the manufacturers' recommendations. Each root canal was irrigated with 2.5mL 2.6% NaOCl. Irrigation was performed using a 24-gauge needle (Max-I-Probe; Tulsa Dental, York, PA) and a 31-G NaviTip needle (Ultradent Products Inc, South Jordan, UT) when reaching the WL after each instrument insertion.

Group BF. For the Balanced Force group, the root canals were shaped and shaped using a #40 instrument for thin or curved canals and a #55 file for wide canals.

Group WON. For the WaveOne group, a file size 25/.08 was used to prepare narrow, straight and curved canals, and a file size 40/.08 was used for large and wide canals.

Three in-and-out pecking motions were used with an amplitude of not more than 3 mm until reaching the estimated working length.

Group REC. The R25 (size 25/ .08) instrument was used in thin and curved root canals, and R40 files (40/ .06) were used in wide root canals. Three in-and-out pecking motions were used with an amplitude of not more than 3 mm until reaching the estimated working length. ;

Related Conditions & MeSH terms

• Pain, Postoperative
• Post Operative Pain

• NCT number: NCT03448263
• Study type: Interventional
• Source: Universidad Autonoma de Baja California
• Status: Completed
• Phase: N/A
• Start date: January 4, 2018
• Completion date: February 6, 2018