Effect of photobiomodulation on pain control after clinical crown lengthening surgery.

Mehrnoosh Sadighi,Mohammad Ghasemi Rad,Ramtin Chitsazha,Sina Ranjbar,Masoumeh Faramarzi

doi:10.34172/japid.2021.014

Abstract

Background Photobiomodulation is a novel technique to reduce pain following different surgeries and treatments. This study aimed to investigate the effect of photobiomodulation on pain control after clinical crown lengthening procedures.Methods Twenty patients were included and randomly assigned to two groups in this single-blind randomized clinical trial. The patients had been referred to the Periodontics Department, Tabriz Faculty of Dentistry, for crown lengthening surgery. In the laser group, diode laser therapy with a wavelength of 860 nm and a power of 100 mW was applied immediately after the surgery on the surgery day and three and seven days after the surgery. In the control group, the laser was turned off, and passive radiation was applied to the area as the test group for 30 seconds per session in non-contact mode. The pain was assessed by a visual analog scale (VAS) questionnaire on the study timelines. Data were analyzed with SPSS 20 using ANOVA and post hoc Tukey tests.Results Twenty patients were included in each study group, where the pain was relieved significantly over time. On the first (5.50±1.18) and seventh (1.8±0.42) days, the pain intensity was similar in the test and control groups. However, on the third day, the laser group (2.90±0.74) experienced a significantly lower pain intensity than the control group (4.0±0.67).Conclusion Photobiomodulation relieved pain after clinical crown lengthening surgeries.

Highlights

The crown lengthening surgery is a technique to expose more tooth surfaces for esthetic or reconstruction purposes through lowering the gingival or bone tissue apically.[1]. The indications of this surgery are subgingival decay or broad decay that shortens the tooth length, fractures, and premature eruption of the anatomical tooth crown. Various techniques such as gingivectomy, undisplaced flap with/without bone surgery, apical resected flap with/without bone resection, and forced eruption with/without fiberotomy have been proposed for crown lengthening procedures.[2,3,4]
Crown lengthening procedures have become an essential part of aesthetics, as they are widely used to enhance the esthetics and restorations in the esthetic area.[7]
Concerning the importance of pain relief in crown lengthening surgery, this study investigated the impact of PBM on pain intensity after clinical crown lengthening procedures

Summary

Introduction

The crown lengthening surgery is a technique to expose more tooth surfaces for esthetic or reconstruction purposes through lowering the gingival or bone tissue apically.[1] The indications of this surgery are subgingival decay or broad decay that shortens the tooth length, fractures, and premature eruption of the anatomical tooth crown. This study aimed to investigate the effect of photobiomodulation on pain control after clinical crown lengthening procedures.

Objectives

Methods

Results