Viability of using enamel and dentin from bovine origin as a substitute for human counterparts in an intraoral erosion model

Brazilian Dental Journal

Cecilia Pedroso Turssi²  Danielle Furtado Messias¹  Silmara Milori Corona²  Mônica Campos Serra² 

[1] ,University of São Paulo , Ribeirão Preto Dental School Department of Restorative DentistryRibeirão Preto SP ,Brazil

关键词: dental erosion;    bovine teeth;    human teeth;    microhardness;    intraoral;   

DOI  :  10.1590/S0103-64402010000400008

来源: SciELO

【 摘 要 】

This study ascertained whether under dental erosion models that closely mimics the real-life situation enamel and root dentin from bovine origin would be reliable substitutes for human counterparts. Through a 2x2 crossover design, in a first trial, 14 volunteers wore a palatal device containing slabs of bovine and human enamel. Half of the participants ingested (4x daily, for 10 days) orange juice first, crossing over to mineral water, while the remainder received the reverse sequence. In a second trial, volunteers wore devices with slabs of bovine and human root dentin. Except for the duration of each intraoral phase, which lasted 2 rather 10 days, the experiment with root dentin run exactly as for enamel. Dental substrates were analyzed for surface microhardness. Two-way ANOVAs (α=0.05) indicated no difference between the microhardness values recorded for human and bovine enamel (p=0.1350), but bovine root dentin had lower microhardness compared to its human counterpart (p=0.0432). While bovine enamel can reliably substitute its human counterpart in in situ dental erosion models, bovine root dentin does not seem to be a viable alternative to the corresponding human tissue.

【 授权许可】

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