“Comparative evaluation of the Efficiency of Three Remineralising Agents on Enamel Surface after Reproximation- An Ex-Vivo study.”

Abstract

Objective: Dental crowding represents the most prevalent issue among orthodontic patients. The reproximation technique involves the reduction, reshaping, and safeguarding of proximal enamel surfaces. Reproximation involves reducing, reshaping, and safeguarding proximal enamel surfaces. It is a crucial tool in cases where tooth extraction is on the borderline, aiming to create space and alleviate crowding. This study aimed to investigate, whether when an Oscillating saw with the diamond-coated metal strip is used for reproximation, the use of CPP-ACP, NovaMin and nano-hydroxyapatite application, post-reproximation procedure affects or enhances the remineralizing of the enamel surface.

Methods: Patients who report to the Dentofacial Orthopaedics and Orthodontics Department at NIMS Dental College and Hospital in Jaipur comprised the sample size. Individuals without cavities, cracks, fillings, fractures, or hypoplasia who had therapeutic extraction of their premolars as part of an orthodontic treatment plan were chosen. Before the commencement of the investigation, the patients provided their informed consent. The samples were divided into 5 groups. Patients were advised to apply the appropriate remineralizing paste to the stripped surfaces, based on their assigned groups and the exact paste provided. Photomicrographs were captured using SEM at various magnifications (500, 1000, 5000) for visual inspection, particularly focusing on surface roughness. A Micro Hardness Tester was utilized to measure Vickers hardness.

Results: This study’s microhardness results showed that Group 1, which had intact enamel and had not had any stripping, had the greatest mean microhardness value, whereas Group 2, which had teeth extracted and polished, exhibited the lowest microhardness value among the stripped enamel samples. The findings indicate that CPP-ACP was more effective than Novamin and Nano-hydroxyapatite in enhancing approximated enamel's mineral content and microhardness.

Conclusion: The microhardness and surface roughness values of enamel surfaces dropped during interproximal enamel peeling. On the stripped enamel surface, saliva and saliva mixed with remineralising agents (CPP-ACP, Novamin, Vantej) decreased surface roughness values elevated by reproximation.

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