title: Tooth extractions in general and due to periodontal reasons in three dental practices: a case-control study.
abstract: OBJECTIVE
  Assessment of the risk for tooth extraction in general and due to periodontal reasons in relation to patient factors.
  
  
  METHODS
  All patients' charts of three German practices were screened for extractions until 300 patients with extractions (cases) had been collected. All patients without extractions that were screened served as controls. Cases and controls were compared regarding parameters at the patient level. Stepwise logistic regression analyses identified factors influencing the risk for extraction.
  
  
  RESULTS
  2,174 patients were analyzed (300 cases/1,874 controls): aged 52.4/45.7 years (P < .001), women 52%/57%, calcium channel blocker medication 15%/8% (P < .001), mean Periodontal Screening Index (PSI) 2.5/1.8 (P < .001). In the case group, 459 teeth were extracted. The risk for tooth extraction in general and due to periodontal reasons was associated with calcium channel blocker medication (OR 1.49/1.66), active smoking (1.35/1.59), age (10 years) (1.13/1.36), practice 1 (1.48/2.19), and number of sextants with PSI code 4 (1.33/1.78). A continuous dentition with >= 20 teeth left was protective against extractions in general.
  
  
  CONCLUSIONS
  Calcium channel blocker medication, active smoking, age, individual dentists, and number of sextants with PSI code 4 are risk indicators for tooth extraction.
authors.affiliation: Department of Periodontology, ZZMK (Carolinum), Johann Wolfgang Goethe-Universität Frankfurt/Main, Germany.
authors.forename: Frank
authors.initials: F
authors.lastname: Püllen
authors.forename: Roger
authors.initials: R
authors.lastname: Folberth
authors.forename: Christina
authors.initials: C
authors.lastname: Ruhmann
authors.forename: Peter
authors.initials: P
authors.lastname: Eickholz
mesh_terms: D000305:Adrenal Cortex Hormones / Q000627:therapeutic use; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D002121:Calcium Channel Blockers / Q000627:therapeutic use; D016022:Case-Control Studies; D016009:Chi-Square Distribution; D055113:Chronic Periodontitis / Q000601:surgery*; D003731:Dental Caries / Q000601:surgery; D003920:Diabetes Mellitus; D005260:Female; D006801:Humans; D007166:Immunosuppressive Agents / Q000627:therapeutic use; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D008964:Molar, Third / Q000601:surgery; D010512:Periodontal Index; D019239:Practice Patterns, Dentists' / Q000706:statistics & numerical data; D012189:Retrospective Studies; D012307:Risk Factors; D012737:Sex Factors; D012907:Smoking; D014081:Tooth Extraction / Q000706:statistics & numerical data*; D055815:Young Adult
chemical_list: D000305:Adrenal Cortex Hormones; D002121:Calcium Channel Blockers; D007166:Immunosuppressive Agents