Abstract
Objectives: White spot lesions after fixed orthodontic treatment will increase bacterial plaque formation due to increased enamel surface roughness. The aim of this study was to analyze the surface roughness of white spot lesions on enamel after a microabrasion technique, a microabrasion technique combined with calcium phosphopeptide-amorphous calcium phosphate (CPP-ACP) application, and a microabrasion technique combined with fluoride application.Methods: Artificially induced white spot lesions on the enamel surfaces of 42 maxillary first premolars were randomly assigned into one of three treatment groups (n=14): (a) A microabrasion technique, (b) a microabrasion technique combined with CPP-ACP application, and (c) a microabrasion technique combined with fluoride application. A Mitutoyo SJ-301 surface roughness tester was used to measure differences in surface roughness before and after treatment, and the after treatment measurements were compared among the three groups.Results: A significant difference in surface roughness was noted for the white spot lesions on enamel before and after treatment in all groups (p<0.05). A significant difference was also found when comparing the after treatment surface roughness in all groups.Conclusion: The combination of the microabrasion technique with CPP-ACP application significantly reduced enamel surface roughness when compared to microabrasion alone or the combination of microabrasion and fluoride application.
Highlights
One of the goals of orthodontic treatment is to improve the appearance of teeth and thereby the overall appearance of the patient
The sample specimens were divided into three treatment groups: Group A underwent a microabrasion technique, Group B underwent the microabrasion technique as well as a CPPACP application, and Group C underwent a microabrasion technique combined with a fluoride application
A significant difference was noted for the surface enamel roughness values after treatment among Groups A-C, indicating that the three methods had significantly different effects on reducing the surface roughness in the enamel of white spot lesions
Summary
One of the goals of orthodontic treatment is to improve the appearance of teeth and thereby the overall appearance of the patient. A white spot lesion on tooth enamel is an unwanted risk that often occurs during fixed orthodontic treatments [2,3]. 50% of patients treated with fixed appliances develop at least one white spot lesion [5], usually after 1 month of using the fixed orthodontic [6]. Mattousch et al found that the white spot lesions appearing after completion of a fixed orthodontic treatment were irreversible unless specially treated. They reported that 40% of white spot lesions would improve without special treatment, 45% would remain the same, and 15% would worsen after 6 months of fixed orthodontic treatment [7]
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