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European Archives of Paediatric Dentistry

, Volume 14, Issue 2, pp 117–120 | Cite as

Effect of air abrasion and polishing on primary molar fissures

  • T. L. LenziEmail author
  • L. B. R. Menezes
  • F. Z. M. Soares
  • R. O. Rocha
Short Communication
  • 130 Downloads

Abstract

Aim

To evaluate the effect of air abrasion and polishing on primary molar fissures under light microscopy.

Methods

15 exfoliated primary second molars were longitudinally sectioned and photographed under a stereomicroscope (40×; baseline evaluation). Sections were then randomly allocated into one of the two groups (n = 15) and treated by either air abrasion (aluminium oxide jet) or air polishing (sodium bicarbonate jet) for 30 s. After treatment, sections were washed with an air/water spray, dried with absorbent paper, and photographed as previously described (final evaluation). Baseline and final morphology were compared by two blinded examiners who evaluated changes in the width and depth of fissures.

Statistics

The percentage of changed fissures was analysed, and the two treatments were compared using the Mann–Whitney test (α = 0.01).

Results

Both air systems resulted in fissure changes in most (93.3 %) of the sections. No significant differences in fissure width changes were found between treatments, but when changes in fissure depth were evaluated, air polishing was found to be less damaging than air abrasion (p < 0.01).

Conclusion

Air abrasion and polishing cause changes to the anatomical configuration of occlusal fissures of primary molars.

Keywords

Dental fissures Primary tooth Air abrasion Air polishing 

Notes

Acknowledgments

We would like to thank Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) for financial support and to Professor Célia Regina Martins Delgado Rodrigues whose knowledge is present in this paper. She passed away few years ago and will be missed.

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Copyright information

© European Academy of Paediatric Dentistry 2013

Authors and Affiliations

  • T. L. Lenzi
    • 1
    Email author
  • L. B. R. Menezes
    • 2
  • F. Z. M. Soares
    • 3
  • R. O. Rocha
    • 4
  1. 1.Department of Orthodontics and Pediatric Dentistry, School of DentistryUniversity of São PauloSão PauloBrazil
  2. 2.Private PracticeSão PauloBrazil
  3. 3.Department of Restorative DentistryFederal University of Santa MariaSanta MariaBrazil
  4. 4.Department of StomatologyFederal University of Santa MariaSanta MariaBrazil

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