# The effect of Photobiomodulation therapy on implant stability in patients receiving dental implants- a systematic review and meta-analysis

## TL;DR

This study reviews and analyzes the impact of photobiomodulation therapy on dental implant stability in patients, finding mixed results that suggest more research is needed.

## Contribution

The paper provides a systematic review and meta-analysis of PBM therapy's effect on implant stability, revealing inconsistent outcomes across time intervals.

## Key findings

- At 2, 4, and 8 weeks, the control group showed better implant stability than the PBM group.
- At 3 weeks, the PBM group showed better implant stability than the control group.
- No significant difference was observed between groups at 6 and 12 weeks.

## Abstract

The use of photobiomodulation (PBM) therapy in implant dentistry for enhancing the osseointegration is proven in many studies. However, the cumulative data of its effect around dental implants in patients is limited.

The purpose of the present study was to evaluate the effect of the PBM therapy on primary and secondary implant stability.

The studies included in the review and meta-analysis were selected according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines and the PICOS criteria. The RoB 2 tool was used for assessing the risk of bias and the RevMan software, v. 5.4, was used for meta-analysis. Quantitative analysis was done using two tools considering the implant stability measurement using Ostellmeter and radiographs as the outcome. The mean and standard deviation (M ± SD) values for implant stability as well as the sample size were extracted from the articles, and the inverse variance method with random effects was used for meta-analysis. The forest plots for all time intervals were inspected to estimate the heterogeneity.

A total of 117 articles were initially retrieved, out of which 62 remained after duplicate removal. 15 articles were included in the review for qualitative analysis and 8 were eligible for quantitative analysis. The meta-analysis showed that at 2 weeks, 4 weeks and 8 weeks, the control group showed better result than experimental group, at 3 weeks the implant stability favoured the experimental group whereas at 6 and 12 weeks there was no difference seen between control and experimental group.

The PBM therapy on implant stability has yielded mixed results. While some studies have demonstrated a positive effect, others have reported no significant impact. Consequently, further research is warranted to fully elucidate the effects of PBM therapy on implant stability.