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Postradiation dental extractions without hyperbaric oxygen.

W G Maxymiw1, R E Wood, F F Liu

  • 1Department of Dentistry, Princess Margaret Hospital, Toronto, Ontario, Canada.

Oral Surgery, Oral Medicine, and Oral Pathology
|September 1, 1991
PubMed
Summary
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This study found no osteoradionecrosis (ORN) after tooth extractions using specific local anesthetics and conservative surgery. These findings suggest a safe approach for dental procedures in irradiated patients.

Area of Science:

  • Oral and Maxillofacial Surgery
  • Radiation Oncology
  • Dental Implantology

Background:

  • Osteoradionecrosis (ORN) is a significant complication following head and neck radiotherapy.
  • Tooth extraction in irradiated patients requires careful management to minimize ORN risk.
  • Previous studies have explored various anesthetic and surgical techniques to prevent ORN.

Purpose of the Study:

  • To evaluate the incidence of osteoradionecrosis after tooth extraction using low-epinephrine or epinephrine-free, nonlidocaine local anesthetics and conservative surgical techniques.
  • To assess the correlation between absorbed radiation dose and ORN development in patients undergoing dental extractions.
  • To determine the safety and efficacy of conservative dental extraction methods in patients with a history of head and neck radiation therapy.

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Main Methods:

  • Retrospective analysis of 72 patients who underwent 449 tooth extractions.
  • Use of low-epinephrine or epinephrine-free, nonlidocaine local anesthetics and conservative surgical techniques.
  • Estimation of absorbed radiation dose to alveolar bone by reviewing radiotherapy records and analyzing treatment films.

Main Results:

  • No instances of osteoradionecrosis were observed in any of the patients following tooth extraction.
  • Only 44% of extracted teeth were located within the radiotherapy treatment volume.
  • Median prescribed tumor dose was 50 Gy, with a median dose per fraction of 2.5 Gy.

Conclusions:

  • Conservative tooth extraction using specific local anesthetics in irradiated patients is a safe procedure with no observed ORN.
  • The findings support the use of minimally invasive surgical techniques and appropriate anesthetic choices to prevent ORN in this patient population.
  • Further research may explore long-term outcomes and refine patient selection criteria for dental procedures post-radiotherapy.