In situ assessment of the saliva effect on enamel morphology after microabrasion technique

Authors

  • Núbia Inocencya Pavesi Pini Universidade Estadual de Campinas - UNICAMP
  • Débora Alves Nunes Leite Lima Universidade Estadual de Campinas - UNICAMP
  • Renato Herman Sundfeld Universidade Estadual Paulista - UNESP
  • Gláucia Maria Bovi Ambrosano Universidade Estadual de Campinas - UNICAMP
  • Flávio Henrique Baggio Aguiar Universidade Estadual de Campinas - UNICAMP
  • José Roberto Lovadino Universidade Estadual de Campinas - UNICAMP

DOI:

https://doi.org/10.20396/bjos.v13i3.8640885

Keywords:

Dental enamel, Enamel microabrasion, Saliva

Abstract

Aim: This study evaluated saliva effects on enamel morphology surface after microabrasion technique. Methods: Enamel blocks (16 mm2 ) obtained from bovine incisors were divided into 9 groups as follows: one control group (no treatment), four groups with microabrasion treatment using 35% phosphoric acid and pumice (H3 PO4 +Pum) and other four groups treated with 6.6% hydrochloric acid and silica (HCl+Sil). One group of each treatment was submitted to 4 frames of saliva exposure: without exposure, 1-h exposure, 24-h exposure, and 7-days exposure on in situ regimen. Nineteen volunteers (n=19), considered as statistical blocks, used an intraoral appliance containing the specimens, for 7 days. Enamel roughness (Ra) was tested before and after treatment, and after saliva exposure. Confocal laser scanning microscopy (CLSM) was used to evaluate qualitatively the enamel morphology. Results: All groups exhibited increased Ra after microabrasion. With regards to saliva exposure, the treatment with HCl+Sil presented more susceptibility to the saliva action, but no period of time was efficient in re-establishing this characteristic compared with the control group. CLSM analysis showed reduction of the micro-abrasive damages during the experimental times. Conclusions: Seven days of saliva exposure were not sufficient for the treated enamel to reach its normal characteristics compared with the control group

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Author Biographies

Núbia Inocencya Pavesi Pini, Universidade Estadual de Campinas - UNICAMP

Universidade Estadual de Campinas - UNICAMP, Piracicaba Dental School, Department of Restorative Dentistry, Piracicaba, SP.

Débora Alves Nunes Leite Lima, Universidade Estadual de Campinas - UNICAMP

Universidade Estadual de Campinas - UNICAMP, Piracicaba Dental School, Department of Restorative Dentistry, Piracicaba, SP.

Renato Herman Sundfeld, Universidade Estadual Paulista - UNESP

Universidade Estadual Paulista - UNESP, Araçatuba Dental School, Department of Restorative Dentistry, Araçatuba, SP.

Gláucia Maria Bovi Ambrosano, Universidade Estadual de Campinas - UNICAMP

Universidade Estadual de Campinas - UNICAMP, Piracicaba Dental School, Department of Social Dentistry, Area of Statistics, Piracicaba, SP.

Flávio Henrique Baggio Aguiar, Universidade Estadual de Campinas - UNICAMP

Universidade Estadual de Campinas - UNICAMP, Piracicaba Dental School, Department of Restorative Dentistry, Piracicaba, SP.

José Roberto Lovadino, Universidade Estadual de Campinas - UNICAMP

Universidade Estadual de Campinas - UNICAMP, Piracicaba Dental School, Department of Restorative Dentistry, Piracicaba, SP.

Published

2010-12-30

How to Cite

1.
Pini NIP, Lima DANL, Sundfeld RH, Ambrosano GMB, Aguiar FHB, Lovadino JR. In situ assessment of the saliva effect on enamel morphology after microabrasion technique. Braz. J. Oral Sci. [Internet]. 2010 Dec. 30 [cited 2022 Dec. 1];13(3):187-92. Available from: https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8640885

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