J Adhes Dent 21 (2019), No. 3 7. June 2019
J Adhes Dent 21 (2019), No. 3 (07.06.2019)
Page 219-228, doi:10.3290/j.jad.a42305, PubMed:31165104
Remineralization Potential of Calcium and Phosphate-based Agents and Their Effects on Bonding of Orthodontic Brackets
Uy, Erika / Ekambaram, Manikandan / Lee, Gillian Hiu Man / Yiu, Cynthia Kar Yung
Purpose: To compare the remineralization potential of Clinpro Tooth Crème (CTC C, 3M Oral Care) containing functionalized tricalcium phosphate (fTCP), Tooth Mousse (TM, GC) containing casein phosphopeptide amorphous calcium phosphate (CPP-ACP), and Tooth Mousse Plus (TMP, GC) containing casein phosphopeptide amorphous calcium phosphate with fluoride (CPP-ACPF) and their effects on the shear bond strength (SBS) of orthodontic brackets to enamel.
Materials and Methods: In Part I of the study, 51 premolars were divided into 3 groups: 1: fTCP; 2: CPP-ACP; 3: CPP-ACPF. Artificial carious lesions were created and immersed in remineralizing solution for 30 days. Specimens were evaluated using Knoop microhardness and transverse microradiography. The percentage of surface hardness recovery (%SHR), change in lesion depth (∆LD), and mineral loss (∆∆Z) were analyzed using one-way ANOVA. In Part II of the study, 80 premolars were divided into 5 groups: A: brackets bonded to sound enamel; B: brackets bonded to demineralized enamel (DE); C-E: demineralized enamel immersed in remineralizing solution containing fTCP (group C), CPP-ACP (group D), or CPP-ACPF (group E) before bracket bonding. The SBS of half of the specimens were tested immediately, while the other half were tested after thermocycling. Data were analyzed using two-way ANOVA.
Results: TMP showed significantly higher %SHR, ∆LD and ∆∆Z compared to the other groups (p < 0.05). Both control and TMP had the highest SBSs and demineralized enamel the lowest, irrespective of thermocycling. No significant difference in SBS was found between TM and TMP after thermocycling.
Conclusions: Tooth Mousse Plus achieved significant remineralization of artificial enamel carious lesions without adverse effect on shear bond strength of orthodontic brackets to remineralized enamel.
Keywords: calcium and phosphate-based agents, enamel bonding, orthodontic brackets, remineralization