Comparison of Incidence of Post-orthodontic White Spot Lesion between Clear Aligners and Fixed Appliances

doi:10.13701/j.cnki.kqyxyj.2024.02.011

Abstract

Abstract: Objective: To compare the incidence of white spot lesions (WSLs) between fixed appliances (FA) and clear aligner (CA) through retrospective study. Methods: The intraoral photographs of patients who completed orthodontic treatment in the West China Hospital of Stomatology were taken using a digital camera before and after treatment. The photographs were placed side by side on a computer monitor to diagnose orthodontic-related WSLs. Non-existent white spot lesions before treatment and faint white opacities after treatment were identified as orthodontic-related WSLs. Results: The incidence of WSLs in the CA group was 4.63%, which was significantly lower than that in the FA group (17.27%, P=0.003). Teeth of male patients were more likely to develop WSLs than those of female patients in the CA group (P=0.021). The incidence of WSLs in the adolescents was significantly higher than that in the adults (P<0.001). More than 25 months of treatment duration were more likely to develop WSLs (P<0.001). Conclusion: The incidence of post-orthodontic WSLs was lower in the patients with clear aligners than in the patients with fixed appliance. Besides, adolescent, male, poor oral hygiene, and longer treatment duration were risk factors for post-orthodontic WSLs.

Key words: white spot lesion, aligner, orthodontics

ZHANG Jingqi, YANG Yi, GAO Yanzi, LIN Donger, JIAN Fan, LONG Hu, LAI Wenli. Comparison of Incidence of Post-orthodontic White Spot Lesion between Clear Aligners and Fixed Appliances[J]. Journal of Oral Science Research, 2024, 40(2): 152-155.

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