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Supportive Care in Cancer

, 18:83 | Cite as

Radiation-related caries and early restoration failure in head and neck cancer patients. A polarized light microscopy and scanning electron microscopy study

  • Alan Roger S. Silva
  • Fabio A. Alves
  • Sandrine B. Berger
  • Marcelo Giannini
  • Mario F. Goes
  • Marcio A. LopesEmail author
Original Article

Abstract

Introduction

Radiation-related caries is a disease with high potential of teeth destruction in patients who have undergone radiotherapy in the head and neck region. Also, it is a challenge for dentistry due to high rates of recurrent caries and early restorations failure.

Purpose

This study aims to analyze the early restoration failures in order to better understand the etiology of dental restorations reduced longevity in irradiated teeth.

Methods

Fifteen restored permanent teeth extracted from 11 patients who had finished head and neck radiotherapy were studied. Sections from each tooth were prepared and a qualitative description of the interface between restorations and dentin was performed by using polarized light microscopy and scanning electron microscopy.

Results

Unfavorable anatomical shape of restorations, residual caries, and secondary caries affecting dentin adjacent to restorative materials were widely found. The morphological patterns of these carious lesions were similar to conventional dentin lesions with superficial demineralized zone and translucent zone.

Conclusions

Early dental restoration failure in teeth affected by radiation-related caries may have the same etiological factors from ordinary dental restoration failure and direct radiogenic damage to dentition would not be essential to early restorations failure in radiation-related caries.

Keywords

Radiation caries Radiation-related caries Radiotherapy Polarized light microscopy Scanning electron microscopy 

Notes

Acknowledgements

This investigation was supported by National Council for Scientific and Technological Development (CNPq), Brazil—Process: 131654/2006-3. The authors would like to thank Dr. Alberto Antunes from the Dental Materials Section, Piracicaba Dental School, for his assistance during the specimen’s preparation and Adriano Luis Martins from the Oral Pathology Section, Piracicaba Dental School, for his assistance during SEM examination.

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Copyright information

© Springer-Verlag 2009

Authors and Affiliations

  • Alan Roger S. Silva
    • 1
    • 2
  • Fabio A. Alves
    • 3
    • 4
  • Sandrine B. Berger
    • 2
    • 5
  • Marcelo Giannini
    • 2
    • 6
  • Mario F. Goes
    • 2
    • 5
  • Marcio A. Lopes
    • 1
    • 2
    • 7
    Email author
  1. 1.Oral Pathology Department (Semiology Area), Piracicaba Dental SchoolCampinas State University (UNICAMP)PiracicabaBrazil
  2. 2.PiracicabaBrazil
  3. 3.Department of StomatologyCancer Hospital A.C. CamargoSão PauloBrazil
  4. 4.São PauloBrazil
  5. 5.Department of Restorative Dentistry (Dental Materials Area), Piracicaba Dental SchoolCampinas State University (UNICAMP)PiracicabaBrazil
  6. 6.Department of Restorative Dentistry (Dentistry Area), Piracicaba Dental SchoolCampinas State University (UNICAMP)PiracicabaBrazil
  7. 7.Department of Oral Diagnosis, Semiology AreaPiracicaba Dental School (UNICAMP)PiracicabaBrazil

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