Amb motiu del tancament d'estiu, la validació de documents es reprendrà a partir del 28 d'agost de 2026. Disculpeu les molèsties.
Con motivo del cierre de verano, la validación de documentos se reanudará a partir del 28 de agosto de 2026. Disculpad las molestias
Due to the summer closure, document validation will resume starting August 28, 2026. We apologize for any inconvenience.

Files

557459.pdf (831.31 KB)

Document type

Article

Version

Accepted version

Publication date

2008-09

All rights reserved

Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/110758

Dental casting alloys behaviour during power toothbrushing with toothpastes with various abrasivities. Part I: wear behavior

Journal Title

Authors

Director/Tutor

Journal ISSN

Volume Title

Related resource

https://doi.org/10.1007/s10856-008-3433-2

Abstract

The purpose of this study was to evaluate the long term effect of abrasivity of toothpastes normally used over the surface and mechanical properties of dental casting alloys. Three dental casting alloys (Ni-Cr, Co-Cr, c.p. Ti) and one ceramic were chosen. Four specimens of each material were immersed in artificial saliva, brushed without or with one of four toothpastes of different Relative Dentine Abrasivity (RDA 50, 52, 80, and 114). An electric toothbrush with a load of 250 g was used for 420 min. Mass loss was determined by difference in weight, microhardness and surface roughness were also measured. Two-way ANOVA and non-parametric tests were used to detect significant differences. Titanium specimens (478 microg/cm(2)) exhibited the most mass loss, whereas ceramic (282 microg/cm(2)) and Co-Cr (262 microg/cm(2)) exhibited the least. However, ceramic demonstrated the most volume loss (0.239 mm(3)). The abrasivity effect of the toothpaste correlated with the RDA values. Slight variations in microhardness were observed after toothbrushing and depended on the material but not on the toothpaste used. Material surfaces were slightly smoothed by toothbrushing but no significant differences were detected. Dental casting alloys and ceramic are susceptible to abrasion by brushing with an electric toothbrush depending on the RDA value of the toothpaste. Variations in microhardness and surface roughness were not clinically relevant.

Subject

Higiene dental, Higiene bucal, Odontologia, Dents, Dentifricis, Corrosió i anticorrosius, Ions, Materials dentals

Subject (English)

Dental hygiene, Oral hygiene, Dentistry, Teeth, Dentifrices, Corrosion and anti-corrosives, Ions, Dental materials

Citation

Collections

Articles publicats en revistes (Odontoestomatologia)

Citation

NOGUÉS PUJOL, Lluís, et al. Dental casting alloys behaviour during power toothbrushing with toothpastes with various abrasivities. Part I: wear behavior. Journal of Materials Science-Materials in Medicine. 2008. Vol. 19, num. 9, pags. 3041-3048. ISSN 0957-4530. [consulted: 17 of August of 2026]. Available at: https://hdl.handle.net/2445/110758

Export metadata

JSON - METS

Share record