Study2020Open access

Photobiomodulation Dose Parameters in Dentistry: A Systematic Review and Meta-Analysis

Cronshaw M, Parker S, Anagnostaki E, Mylona V, Lynch E, Grootveld M

Dentistry journal · 48 citations

How it was studied

Design
Meta-analysis (classified by our AI screen)
Studied in
People
Main outcome
Health markers and function

Who paid for it

Funding
Independent funding

Based on full-text disclosure statement.

Publication

Published
2020-10-06 · Dent J (Basel) · vol. 8 · issue 4 · p. 114
Publisher
Multidisciplinary Digital Publishing Institute
Cited
93 citations · more than 91% of similar papers · 2.2× the field average
Impact
Top 10% most cited in its field
References
89 works
Access
Open access (journal) · CC-BY
Research areas
Laser Applications in Dentistry and Medicine · Oral health in cancer treatment · Photodynamic Therapy Research Studies
Keywords
Medicine, Mucositis, Clinical trial, Systematic review, Randomized controlled trial, Meta-analysis, MEDLINE, Dentistry, Radiation therapy, Surgery, Internal medicine

6 authors

From GB, US

  • Mark Cronshaw · correspondingDe Montfort University; University of Birmingham
  • Steven P. A. ParkerDe Montfort University
  • Eugenia AnagnostakiDe Montfort University
  • Valina MylonaDe Montfort University
  • Edward J. LynchUniversity of Nevada, Las Vegas; De Montfort University
  • Martin C. GrootveldUniversity of Nevada, Las Vegas; De Montfort University

Abstract

Objective

This systematic review and meta-analysis of published randomized controlled trials examines a possible relationship between optical spot size at surface tissue, irradiance, radiant exposure, total energy delivered, operator technique and reported clinical outcomes.

Background

Clinical photobiomodulation (PBM) therapy has achieved a high level of evidence-based acceptance in the mitigation of oral mucositis associated with cancer radiotherapy and chemotherapy, and supportive clinical research in relation to orthodontic tooth movement, oral medical conditions, including burning mouth syndrome, xerostomia and lichen planus. Inconsistent outcomes have been reported not withstanding a substantial body of primary supportive research from clinical, in vitro and animal studies.

Materials and methods

PubMed, Cochrane Database of Reviews and Google Scholar search engines were applied to identify human clinical trials of PBM therapy in clinical dentistry. A total of 766 articles between February 2009 and June 2020 were identified and following a full text evaluation, 38 papers with sufficient data to permit analyses are included in this investigation.

Results

Following a detailed assessment of potential factors that may have an influence in clinical outcome, a clear trend is apparent associating optical spot size to a positive or negative effect. Furthermore, there is a clear difference in the reported results in relation to total energy applied, delivery techniques and optical parameters, which merits further investigation. Factorial statistical analyses identified an association between smaller optical surface applications and an overall lower level of reported clinical success in treating superficial and deeper targets, and correspondingly sub-surface larger target tissues were found to be more responsive to therapy by use of a larger optical surface spot size. Moreover, use of multiple small diameter probe applications was found to provide inconsistent results.

Conclusions

Many factors can confound clinical success including variations in anatomy, site location, clinical condition and subject individuality. To achieve higher levels of predictable outcome, a mature appreciation of these factors, plus an expanded understanding of laser parametry, tissue volume and target depth to deliver an adequate dose within current recommended guidelines, is essential.

Abstract via Europe PMC. Copyright remains with the authors or publisher (CC BY).

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