Comparative Evaluation of Nanohydroxyapatite and Fluoride Containing Toothpastes on Dentinal Tubules Occlusion

Document Type : Original Article

Authors

1 Demonstrator of Conservative Dentistry, Faculty of Dentistry, Assiut University

2 Associate Professor of Conservative Dentistry, Faculty of Dentistry, Minia University

Abstract

Aim: This investigation was conducted to compare the impact of three distinct toothpastes on mineral deposition and dentinal tubules occlusion. Material and Methods: Sixty dentin samples were prepared from sixty extracted molar. The samples demineralized by submerging in 6% citric acid for two minutes. Then assigned into three groups (n=20) according to the three different toothpastes utilized: Group A1: Fluoride containing toothpaste. Group A2: Nano-hydroxyapatite containing toothpaste. Group A3: Nano-hydroxyapatite with Fluoride containing toothpaste. For a total of two weeks, brushing was repeated twice a day with a 12-hour interval between each session. Each sample were quantitatively assessed the ion concentrations (atom%) on the dentin surface using Energy-dispersive Analytical X-ray (EDAX) and qualitatively examined the dentinal tubules occlusion using Scanning Electron Microscope (SEM). Results: The lowest mean value of (Ca) % was found in (A1). The lowest mean (P) % value observed in (A1). The lowest mean value of (F) % was recorded in (A2), while the greatest mean value was identified in (A1 and A3). Conclusion: Toothpastes containing nano-hydroxyapatite, both with and without fluoride, show similar effects on mineral deposition and blockage of dentinal tubules.

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Egyptian Dental Journal
Volume 71, Issue 3 - Serial Number 5
Conservative Dentistry and Endodontics
July 2025
Pages 2773-2782

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