Dose inhomogeneities on surfaces of different dental implants during irradiation with high-energy photons

Dentomaxillofac Radiol. 2008 Mar;37(3):149-53. doi: 10.1259/dmfr/29131739.


Objectives: The aim of this study was to determine the radiation doses in mucosa and bone close to the surface of different dental implant materials.

Methods: Radiation dose was measured at the interface of bone or soft tissue and various implant materials for 6 MV photons generated by a medical linear accelerator using a phantom and ultrathin thermoluminescent dosemeters.

Results: Increasing thickness of implant materials resulted in a dose decrease in bone immediately behind the implants. Directly in front of titanium implants, dose increases of 18.2% and 30.4% were found in bone and soft tissue, respectively, independent of implant thickness and surface structure (polished/plasma coated). Even a titanium coating with 70 microm hydroxyapatite did not affect the scattering dose. In contrast, for aluminium oxide ceramics, a scatter-induced notable dose increase could not be assessed.

Conclusions: During irradiation with high-energy photons, an implant-induced dose enhancement could be reduced in bone using the technique of multiple fields and in soft tissue using ceramic abutments.

MeSH terms

  • Aluminum Oxide / radiation effects
  • Ceramics / radiation effects
  • Coated Materials, Biocompatible / radiation effects
  • Dental Abutments
  • Dental Implants*
  • Dental Materials / radiation effects*
  • Dental Porcelain / radiation effects
  • Dental Prosthesis Design
  • Durapatite / radiation effects
  • Humans
  • Jaw / radiation effects*
  • Mouth Mucosa / radiation effects*
  • Phantoms, Imaging
  • Radiotherapy Dosage*
  • Radiotherapy, High-Energy
  • Scattering, Radiation
  • Surface Properties
  • Thermoluminescent Dosimetry
  • Titanium / radiation effects


  • Coated Materials, Biocompatible
  • Dental Implants
  • Dental Materials
  • Dental Porcelain
  • Durapatite
  • Titanium
  • Aluminum Oxide