Abstract
Objective: Carboxymethyl chitosan (CMC) is a non-collagenous protein analog which has a similar role as dentin matrix protein 1. CMC stabilizes amorphous calcium phosphate (ACP); hence forming nanocomplexes of CMC-ACP. The purpose of this study was to evaluate the effect of CMC concentration in CMC-ACP on dentin remineralization.Methods: Cavities were formed on the occlusal surfaces of freshly extracted premolar teeth. All samples were demineralized and immersed in phosphate-buffered saline and stored in a shaking incubator at 37°C. The teeth were randomly divided into five groups. Group 1 was control group (no treatment), whereas Groups 2, 3, 4, and 5 were treated with CMC-ACP containing 1%, 2.5%, 5%, and 10% CMC. The remineralized layer on the dentin surface was evaluated using scanning electron microscopy and energy-dispersive X-ray analysis.Results: The highest dentin remineralization capacity was achieved in Group 5 (10% CMC), whereas diminishing effects were observed in Group 4 (5% CMC), Group 3 (2.5% CMC), and Group 2 (1% CMC). Although no significant differences in calcium levels were observed between 2.5%, 5%, and 10% CMC groups, phosphate levels differed significantly in all treatment groups.Conclusion: Optimal dentin remineralization was achieved by the application of CMC–ACP containing 2.5% CMC.
Highlights
Dental caries causes destruction of the dentin network, resulting in collagen fibrils degradation and decreases dentin mechanical properties [1]
We investigated the influence of carboxymethyl chitosan (CMC) concentration in CMC–amorphous calcium phosphate (ACP) that resulted in optimal dentin remineralization
scanning electron microscopy (SEM) analysis was conducted to evaluate the changes in dentin surface morphology whereas energy-dispersive X-ray (EDX) examination revealed the calcium and phosphate contents on dentin surfaces after remineralization
Summary
Cavities were formed on the occlusal surfaces of freshly extracted premolar teeth. All samples were demineralized and immersed in phosphate-buffered saline and stored in a shaking incubator at 37°C. The teeth were randomly divided into five groups. Group 1 was control group (no treatment), whereas Groups 2, 3, 4, and 5 were treated with CMC-ACP containing 1%, 2.5%, 5%, and 10% CMC. The remineralized layer on the dentin surface was evaluated using scanning electron microscopy and energy-dispersive X-ray analysis
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