title: Reasons for placement and replacement of amalgam restorations in Jordan.
abstract: OBJECTIVE
  To record the reasons for placement and replacement of amalgam restorations in Jordan, to determine the use of amalgam restorations in common cavity types and to collect data on the age of the replaced amalgam restorations.
  
  
  METHODS
  Dentists in Jordan (n=241).
  
  
  METHODS
  Cross-sectional study using postal survey backed up with personal contact. Data was recorded for all restorations placed or replaced over a period of one month.
  
  
  RESULTS
  Information was collected on 3,166 restorations from patients aged 9 to 66 years. Of all restorations, 54.8% were first time placements while 45.2% were replacements of old restorations. The major reason for the first time restorations was primary caries, while that for replacement was secondary caries (28.5%) followed by broken and lost restorations (20.4%), root canal therapy (17%), tooth fracture (12%), pain or sensitivity (8.8%), poor margins (8.5%).
  
  
  CONCLUSIONS
  In Jordan, the main reason for first placement of amalgam restoration is primary caries, the main reason for replacement is secondary caries.
authors.affiliation: Department of Dentistry, Prince Hashem Ben Al Hussein Hospital-Royal Medical Services, Irbid, Jordan.
authors.forename: A R
authors.initials: AR
authors.lastname: Al Negrish
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D003430:Cross-Sectional Studies; D003657:Decision Making; D003723:Dental Amalgam; D003731:Dental Caries / Q000628:therapy; D003737:Dental Cavity Preparation / Q000145:classification; D018772:Dental Marginal Adaptation; D019232:Dental Restoration Failure; D003793:Dental Restoration, Permanent / Q000145:classification; D003807:Dentin Sensitivity / Q000150:complications; D005260:Female; D006801:Humans; D007597:Jordan; D008297:Male; D008875:Middle Aged; D012008:Recurrence; D019233:Retreatment; D012390:Root Canal Therapy; D013223:Statistics as Topic; D013499:Surface Properties; D013997:Time Factors; D014082:Tooth Fractures / Q000150:complications; D014098:Toothache / Q000150:complications
chemical_list: D003723:Dental Amalgam