2. Â Local contraindications 1. History of therapeutic radiation for cancer. Extractions performed in an area of radiation may result in osteoradionecrosis . 2. Teeth that are located within an area of tumor, especially a malignant tumor, should not be extracted.extractionin the area of malignancy may increase the chances of dissemination of malignancy
3. Cont⌠Patients who have severe pericoronitis around an impacted mandibular third molar. Should not have the tooth extracted until the pericoronitishas been treated. The acute dentoaleolar abscess. acute infection is not a contraindication to extraction.
4. Cont⌠5.  Extraction may also be contraindicated when it is adjacent to the site of jaw fracture, because the teeth may be required for stabilization of the fractured bone. 6. If the patient has very limited mouth-opening ability,