Bioactive glass remineralization therapy may reduce Post-orthodontic White Spot Lesions suggests a new study published in the to evaluate the efficacy of 2 types of bioactive glass (45S5) compared to casein-phosphopeptide stabilized-amorphous calcium phosphate (CPP-ACP) in the treatment of orthodontically-induced white spot lesions (WSLs).

Sixty post-orthodontic WSLs (ICDAS II score 2) were randomly allocated to a double blind randomized controlled trial with 3 parallel arms (n = 20). Test group I (Bio-BAG) received BiominF slurry and toothpaste, and test group II (N-BAG) received Novamin slurry and toothpaste. While the positive control group (CPP-ACP) received Recaldent paste. Products were applied daily in-office during week 1, and boosted by self-administered home application for 4 weeks (week 1-4). Standard oral hygiene care was performed by all participants twice daily during months 2-6. All patients were assessed for change in WSL dimensions using computer assisted analysis based on standardized digital intraoral photographs in addition to laser fluorescence DIAGNOdent assessment before treatment (T0) and at 1 week (T1), 1 month (T2), 3 months (T3,) and 6 months (T4) follow up periods.

Results:
• Kruskal Wallis test was used (P < .05 for all). At T4, a statistically significant (P < .001) regression of WSL was disclosed in all 3 groups compared to baseline, and a highly significant lesion size percent reduction in Bio-BAG group compared to the control group (P < .001).
• The mean area of the lesions decreased by 64.8%, 32.2%, and 31.6% for groups I, II and III respectively (P = .001).
• DIAGNOdent findings largely reflected the clinical scores
• No adverse effects were reported.
The combined in-office and home-application of BiominF paste for 4 weeks resulted in greater esthetic improvements of post-orthodontic WSLs compared to Novamin and CPP-ACP. In addition, BiominF showed a significant reduction in fluorescence intensity which indicates potential lesion remineralization.
Reference:
EFFICACY OF NOVEL BIOACTIVE GLASS IN THE TREATMENT OF ENAMEL WHITE SPOT LESIONS: A RANDOMIZED CONTROLLED TRIAL✰ J Evid Based Dent Pract 2022 Dec 01;22(4)101725, R Salah, RR Afifi, HA Kehela, NM Aly, M Rashwan, RG Hill