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Is buffalo enamel a suitable substrate for bond strength tests?

Juliana Costa Pereira Baia1, Mara Eliane Soares Ribeiro1, Bárbara Catarina Lima Nogueira1

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Buffalo enamel exhibits comparable adhesive bonding strength and acid etching susceptibility to human enamel, suggesting its viability as a dental substrate. This finding is crucial for dental material research and application.

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dental acid etchingdental enamelscanning electron microscopyshear strength

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Area of Science:

  • Dental Materials Science
  • Biomaterials Engineering
  • Comparative Anatomy

Background:

  • Dental restorative procedures rely on effective adhesion between materials and tooth structure.
  • Understanding the properties of various enamel types, including animal models, is essential for preclinical research.
  • Variations in enamel composition and structure can influence bonding efficacy.

Purpose of the Study:

  • To compare the adhesive bonding strength of dental materials on buffalo, bovine, and human enamel.
  • To evaluate the susceptibility of these enamel substrates to acid etching.
  • To assess the suitability of buffalo enamel as a model for human dental research.

Main Methods:

  • Mechanical microshear assay performed on 20 human, 20 bovine, and 20 buffalo incisors.
  • Substrate demineralization using 37% phosphoric acid conditioning.
  • Ultra-morphological analysis of enamel substrates via scanning electron microscopy.

Main Results:

  • No significant difference in adhesive bonding strength was observed between buffalo and human enamel (P≥0.05).
  • All experimental groups exhibited a mixed-type fracture pattern, indicating cohesive failure within the adhesive or composite.
  • Similar ultra-morphological patterns were noted after acid conditioning across substrates.

Conclusions:

  • Buffalo enamel demonstrates comparable adhesive bonding strength to human enamel.
  • Buffalo enamel exhibits similar susceptibility to acid conditioning as human enamel.
  • Buffalo enamel serves as a suitable and comparable model to human dental substrate for bonding strength and acid etching studies.