Effects of 60Co-gamma-irradiation on teeth and jaw bone in the rabbit
| Autor: | Arthur Nathanson, Anders Bäuckström |
|---|---|
| Rok vydání: | 1978 |
| Předmět: |
Time Factors
medicine.medical_treatment Radiography Dentistry Mandible Fundus (eye) Osteotomy Radiation Dosage stomatognathic system medicine Animals Cementum Cobalt Radioisotopes business.industry Dental occlusion Microcirculation Follow up studies Anatomy Craniometry stomatognathic diseases medicine.anatomical_structure Microscopy Fluorescence Microangiography Gamma Rays Dentin Surgery Rabbits Dental Pulp Cavity business Tooth |
| Zdroj: | Scandinavian journal of plastic and reconstructive surgery. 12(1) |
| ISSN: | 0036-5556 |
| Popis: | The jaw bone, including teeth, of 61 young adult rabbits was exposed to single doses of 60Co-μ-radiation ranging from 1000 to 4000 rads. The beam struck the jaw bone in a caudocephalad direction. The rabbits were injected with 3 different fluorochromes administered at specific intervals and sacrificed 2, 6, 12 or 24 weeks after irradiation. At the time of sacrifice they were infused with Indian ink. The jaws were examined by X-ray photography, microangiography, light and fluorescence microscopy. There was no damage in 15 of 16 investigated rabbits after 1 000 rads. Forty-one of 42 rabbits irradiated with ≥2 000 rads showed damage to the teeth. The first signs of damage occurred apically in the teeth, in the form of a stunted growth of the continuously growing teeth. The pulp cavity then became occluded by a mixture of irregular dentin and cellular cementum. As the irradiated teeth erupted, which occurred at a reduced rate, the empty part of the fundus of the alveolus after 2 000 rads was replaced by newly... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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