Evaluation of the microleakage of occlusal sealant in deciduous enamel teeth: effect of different application techniques

Authors

  • Dayse Andrade Romão Universidade Federal de Alagoas
  • Marcos Aurélio Bomfim da Silva Universidade Federal de Alagoas
  • Larissa Silveira de Mendonça Fragoso Universidade Federal de Alagoas
  • Marilia Mattar de Amoêdo Campos Velo Faculdade de Odontologia de Bauru, Universidade de São Paulo
  • Fernanda Regina Ribeiro Santos Universidade de Pernambuco
  • Natanael Barbosa dos Santos Universidade Federal de Alagoas

DOI:

https://doi.org/10.11606/issn.2357-8041.clrd.2018.148897

Keywords:

Dental decay, Deciduous teeth, Primary prevention

Abstract

Objectives: Since deciduous teeth are more prone to the development of dental decay, this study aimed to compare the effect of different strategies for sealant application in pits and fissures, whether isolated or associated, on the enamel microleakage in molars of deciduous teeth. Materials and methods: deciduous teeth molars were selected (n = 8) and received the following treatments: 1) control group: acid etching + sealant; 2) abrasive air + acid etching + sealant; 3) acid etching + adhesive + sealant; 4) abrasive air + acid etching + adhesive + sealant. After treatment, the teeth were immersed in distilled water at 370 °C for seven days and subjected to thermocycling of 350 cycles of cold (5 °C) and hot (55 °C) baths, for 30 seconds in each exposure. Afterwards, the teeth were covered with varnish – leaving only the sealed area exposed, extended by 1 mm –, waterproofed with epoxy resin and immersed in methylene blue solution for 48 hours at 37 °C. Then, the teeth were buccal-lingually sectioned and microscopically evaluated (40× magnification). The results were subjected to the Kruskal-Wallis and to the Mann-Whitney tests (p < 0.05). Results: the groups that received the adhesive prior to the sealant ap­plication have presented the lowest index of microinfiltration. The group that received abrasive air and acid etching before the sealant have showed more extensive microleakage. Conclusions: none of the techniques conducted herein have completely avoided the microle­akage, however the adhesive application may be the most indicated technique.

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Author Biographies

  • Dayse Andrade Romão, Universidade Federal de Alagoas

    Departamento de Cariologia, Universidade Federal de Alagoas, Maceió, AL, Brasil

  • Marcos Aurélio Bomfim da Silva, Universidade Federal de Alagoas

    Departamento de Materiais Dentários, Universidade Federal de Alagoas, Maceió, AL, Brasil

  • Larissa Silveira de Mendonça Fragoso, Universidade Federal de Alagoas

    Departamento de Dentística da Universidade Federal de Alagoas, Maceió, AL, Brasil

  • Marilia Mattar de Amoêdo Campos Velo, Faculdade de Odontologia de Bauru, Universidade de São Paulo

    Departamento de Dentística, Endodontia e Materiais Odontológicos da Faculdade de Odontologia de Bauru, Universidade de São Paulo, Bauru, SP, Brasil

  • Fernanda Regina Ribeiro Santos, Universidade de Pernambuco

    Departamento de Odontopediatria, na Universidade de Pernambuco, Recife, PE, Brasil

  • Natanael Barbosa dos Santos, Universidade Federal de Alagoas

    Departamento de Cariologia, Universidade Federal de Alagoas, Maceió, AL, Brasil

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Published

2018-12-04

Issue

2018

Section

Original Research

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