Impact of Remineralization Potential of Biphasic Calcium Phosphate Powders on Incipient Enamel Caries

Abstract

Objectives: To evaluate and compare the remineralizing effect of biphasic calcium phosphate (BCP) powder compared with  nanohydroxyapatite (nano-HA) and beta-tricalcium phosphate (b-TCP) powders using laser fluorescence.

Materials and methods:  Fifteen sound human premolars and molars were subjected to infection control measures. Then, the roots were removed and crowns  were sectioned to provide blocks from the buccal and lingual surfaces. Each specimen underwent pH cycling to produce white spot  lesions. The specimens were divided into three groups according to the treatment used. The total sample size for all groups was thirty  specimens (10 specimens for each group). The change in mineral content was evaluated by laser fluorescence using a DIAGNOdent pen  at baseline, after demineralization, and after remineralization for 14 and 30 days. The mean value of each specimen reading was  calculated.

Results: BCP showed lower laser fluorescence results compared with HA and b-TCP (recorded by DIAGNOdent pen) after  application for 14 days (8.04 ± 0.55) and 30 days (6.08 ± 0.65). However, the results were not statistically different from the results of other  groups (HA group 8.18 ± 0.87 and 6.36 ± 0.922 and b-TCP group 8.36 ± 1.17 and 6.93 ± 0.81). The remineralizing potential of the  three materials increased with increasing the time of application.

Conclusions: BCP powder could be used for enamel remineralization.  Its potential for the remineralization of incipient enamel caries is similar to HA and b-TCP.