title: Periodontal changes in patients undergoing radiotherapy.
abstract: BACKGROUND
  The purpose of this study was to evaluate changes in the periodontium in patients who received head and neck radiation therapy.
  
  
  METHODS
  Periodontal clinical parameters (probing depth, clinical attachment level, gingival recession, plaque index, and bleeding on probing) were assessed on 27 patients before and 6 to 8 months following radiation therapy in the head and neck area.
  
  
  RESULTS
  The greatest changes occurred in clinical attachment level: overall, 70.3% of the patients showed a loss, with 92% evincing loss in the mandible. Attachment loss was directly related to the field of radiation and was greater when the jaws were actually included in the irradiated area.
  
  
  CONCLUSIONS
  Periodontal status should be evaluated prior to and following radiation therapy in the oral-maxillary-facial region to help ensure that periodontal health is maintained in oncology patients.
authors.affiliation: Health Sciences Institute, University Paulista and A.C. Camargo Hospital, São Paulo, Brazil. marisacorazzamarques@hotmail.com
authors.forename: Marisa Alvarez Corazza
authors.initials: MA
authors.lastname: Marques
authors.forename: Luciano Lauria
authors.initials: LL
authors.lastname: Dib
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D003774:Dental Plaque Index; D019583:Dose Fractionation, Radiation; D005260:Female; D005500:Follow-Up Studies; D005884:Gingival Hemorrhage / Q000209:etiology; D005889:Gingival Recession / Q000209:etiology; D006258:Head and Neck Neoplasms / Q000532:radiotherapy*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009910:Oral Hygiene; D017622:Periodontal Attachment Loss / Q000209:etiology; D010510:Periodontal Diseases / Q000209:etiology*; D010512:Periodontal Index; D010514:Periodontal Pocket / Q000209:etiology; D010519:Periodontium / Q000528:radiation effects*; D011882:Radiotherapy, High-Energy / Q000009:adverse effects