E-ISSN: 2148-9505
Effect of CO2 Laser on the Prevention of White Spot Lesions During Fixed Orthodontic Treatment: A Randomized Clinical Trial
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Original Article
VOLUME: 32 ISSUE: 3
P: 165-171
September 2019

Effect of CO2 Laser on the Prevention of White Spot Lesions During Fixed Orthodontic Treatment: A Randomized Clinical Trial

Turk J Orthod 2019;32(3):165-171
DOI: 10.5152/TurkJOrthod.2019.18052
Majid Mahmoudzadeh 1
Sara Alijani 1
Loghman Rezaei Soufi 2
Maryam Farhadian 3
Fatemeh Namdar 4
Somayeh Karami 5
1. Department of Orthodontics, Hamadan University of Medical Sciences School of Dentistry, Hamadan, Iran
2. Department of Operative, Dental Research Center, Hamadan University of Medical Sciences School of Dentistry, Hamadan, Iran
3. Department of Biostatistics, Hamadan University of Medical Sciences School of Public Health and Research Center for Health Sciences, Hamadan, Iran
4. Dental Materials Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
5. Post Graduate Orthodontic Student of Hamadan School of Dentistry, Department of Orthodontics, Hamadan University of Medical Sciences School of Dentistry, Hamadan, Iran
No information available.
No information available
Received Date: 11.07.2018
Accepted Date: 20.01.2019
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ABSTRACT

Objective:

This study aimed to assess the effect of carbon dioxide (CO2) laser on prevention of white spot lesions (WSLs) associated with fixed orthodontic treatment.

Methods:

In this parallel controlled trial, 554 maxillary anterior teeth in 95 patients with age range of 12-30 years were included. The samples were randomly divided in two groups: 1) CO2 laser (n=278) and 2) control (n=276) groups. Following bracket attachment, the teeth in the laser group were exposed to CO2 laser (0.4 mw, 10.6 μm, 5 Hz) for 20 s, and the control group received placebo light. Incidence, severity, and extent of the lesions were assessed in four surface regions (gingival, incisal, mesial, and distal) at baseline and 6 months post-irradiation. The inter-group comparison was performed by the Mann-Whitney U test and McNemar analysis.

Results:

A significant difference regarding WSLs incidence in all teeth was observed between the two study groups (p<0.001). The two study groups illustrated a significant difference in lesion extent and incidence in incisal, mesial, and distal regions (p<0.05). The WSLs were significantly different in terms of severity in the incisal and mesial sites (p<0.05).

Conclusion:

The CO2 laser irradiation seemed to effectively prevent incidence of WSLs. In addition, its effectiveness varied depending on the surface region.