Effect of Repeated Acid Challenges on the Color Stability of Resin-Infiltrated Enamel White Spot Lesions
Abstract
Resin infiltration is a minimally invasive therapy to halt caries progression and to esthetically mask demineralized white spot lesions in enamel. Literature suggests that resin-infiltration protects incipient lesions from acidic exposures and halts further carious progression; however, the effect of acidic challenge on the color stability of resin-infiltrated white spot lesions remains unclear. Purpose: To investigate the effect of repeated diet simulating acidic challenges on the color stability of resin-infiltrated white spot lesions. Methods: Forty eight extracted human molars were mounted to expose the buccal surface and establish the baseline color assessments using spectrophotometry with the CIEL *a*b* tri-dimensional color analysis system. Teeth were immersed in a buffering acidic solution for 96 hours to create artificial white spot lesions and then divided into four treatment groups (n= 12 teeth/group) according to the surface treatment and solution exposure for 28 days: Group 1 -resin infiltration acid challenge (pH 3.3; 1 hour/day), Group 2 - resin infiltration water (pH 7; 24 hour/day), Group 3 - no resin infiltration acid challenge, Group 4 - no resin infiltration water. The changes in color and lightness from spectrophotometic measurements were analyzed by Kruskal-Wallis and Mann Whitney tests. Results: Groups exposed to repeated diet simulating acid challenges resulted in significant changes in color (P = 0.001) and lightness (P<0.001), compared with groups without acid challenge. Group 1 (resin infiltration acid challenge) was significantly different from all other treatment groups and exhibited the greatest alteration in color (P =0.001) and lightness (P<0.05), however, repolishing resin-infiltrated lesions can minimizethe acidic effect.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 08, 2018
- Accession Number
- AD1128406
Entities
People
- Elise V. Hurrell
Organizations
- Uniformed Services University of the Health Sciences