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Ionizing radiation effects on osseointegration: a pre-clinical study.

Roberta de Oliveira Alves1, Guilheme José Pimentel Lopes de Oliveira1, Rita Catarina de Oliveira1

  • 1Universidade Federal de Uberlândia - UFU, School of Dentistry, Department of Periodontology and Implantology, Uberlândia, MG, Brazil.

Brazilian Oral Research
|December 11, 2024
PubMed
Summary

Ionizing radiation (30 Gy) did not significantly affect dental implant osseointegration in rabbit tibias. This study found no interference with bone-to-implant contact (BIC) or bone-to-abutment contact (BABT) after irradiation.

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Area of Science:

  • Biomaterials Science
  • Orthopedic Surgery
  • Radiation Oncology

Background:

  • Osseointegration is crucial for dental implant success.
  • The impact of ionizing radiation on osseointegration requires further investigation.

Purpose of the Study:

  • To evaluate the effect of a single 30 Gy dose of ionizing radiation on dental implant osseointegration in a rabbit tibia model.
  • To assess if pre-implantation irradiation impacts bone healing around implants.

Main Methods:

  • Twenty rabbits received dental implants in the tibia.
  • Animals were divided into irradiated (Ir) and non-irradiated (NoIr) groups.
  • Microtomography (BV/TV) and histomorphometry (BIC, BABT) were performed 4 weeks post-implantation.

Main Results:

  • Bone volume per tissue volume (BV/TV) showed no significant difference between groups (P=0.071).
  • Bone-to-implant contact (BIC) and bone-to-abutment contact (BABT) were not significantly different between irradiated and non-irradiated groups (p>0.05).

Conclusions:

  • A single dose of 30 Gy ionizing radiation does not appear to negatively interfere with osseointegration of dental implants placed prior to irradiation.
  • These findings suggest that dental implants may tolerate irradiation when installed before exposure.