Effect of the Simultaneous Working Length Control during Root Canal Preparation on Postoperative Pain

• Published in: Journal of endodontics Vol. 43; no. 9; pp. 1422 - 1427
• Main Authors: Arslan, Hakan, Güven, Yahya, Karataş, Ertuğrul, Doğanay, Ezgi
• Format: Journal Article
• Language: English
• Published: United States Elsevier Inc 01.09.2017
• Subjects: Adult; Checklist; Dentistry; Endodontic treatment; Female; Gold Reciproc motor; Humans; Male; Pain, Postoperative - etiology; postoperative pain; reciprocation; Root Canal Preparation - methods; root canal treatment; separate working length control; simultaneous working length control; working length determination; Endodontic treatment; reciprocation; Gold Reciproc motor; working length determination; postoperative pain; simultaneous working length control; root canal treatment; separate working length control
• ISSN: 0099-2399; 1878-3554
• DOI: 10.1016/j.joen.2017.04.028

The aim of this study was to evaluate the effect of simultaneous length control during root canal preparation on postoperative pain compared with separate working length determination and root canal preparation. The design was a parallel-group, randomized, controlled trial with 2 arms. Forty-four molar teeth were randomly divided into 2 groups (n = 22), a control group (separate length determination and root canal preparation) and a simultaneous length control during root canal preparation group. The following variables were recorded: age; gender; tooth number; preoperative pain on the visual analog scale; pain level on days 1, 3, 5, and 7; and analgesic intake after the procedure and initial/final percussion pain. The data were analyzed with the χ2 test, independent samples t test, and Mann-Whitney U test. The simultaneous length control during root canal preparation group resulted in lower postoperative pain levels on day 1 than did the control group (P < .05). Despite 2 patients' intake of postoperative analgesics in the control group, no patient needed to use postoperative analgesics in the simultaneous length control during root canal preparation group (P > .05). Simultaneous length control during root canal preparation as a non-pharmacologic strategy for reducing postoperative pain is a beneficial technique for preventing postoperative pain.