title: Attitudes, practice, and experience of German dentists regarding repair restorations.
abstract: OBJECTIVE
  The aim of the present study was to perform a representative survey among German dentists about attitudes, practice, and experience regarding single-tooth repair restorations.
  
  
  METHODS
  An anonymous questionnaire was designed and mailed to all registered dentists in Lower Saxony (n = 6600). Twenty-eight percent were returned (n = 1852), and n = 1805 could be analyzed. Statistical analyses were done by Wilcoxon signed-rank tests, Kruskal-Wallis tests, and ordered logistic regressions (p < 0.05).
  
  
  RESULTS
  Only 2.2 % of the dentists declared to never perform repair restorations. Composite restorations were repaired significantly more often than all other materials. Frequency of performing repair restorations was partially associated to dentist-related factors. The decision for repairing a restoration was dependent on several tooth- and restoration-associated variables. The main indications for repair were the partial loss of restoration or adjacent tooth structure as well as chipping and endodontic access cavities of crowns. Repair restorations were mostly done with composite using various different preconditioning techniques. Overall patients' acceptance was reported to be high. Most of the dentists considered repair restorations as permanent restoration with a moderate to high longevity. Estimated success of repair restorations depended significantly on the dentists' experiences (frequency and techniques of repair restorations).
  
  
  CONCLUSIONS
  Repair restorations were often performed and were well accepted by dentists and patients, but indications for repair restorations as well as applied materials and techniques varied distinctly.
  
  
  CONCLUSIONS
  Repairs of single-tooth restorations are well accepted and frequently performed, but indications, techniques, and materials require further research.
authors.affiliation: Department of Preventive Dentistry, Periodontology and Cariology, University Medical Center Göttingen, Robert-Koch-Str. 40, 37075, Göttingen, Germany. philipp.kanzow@med.uni-goettingen.de.
authors.forename: Philipp
authors.initials: P
authors.lastname: Kanzow
authors.affiliation: Department of Preventive Dentistry, Periodontology and Cariology, University Medical Center Göttingen, Robert-Koch-Str. 40, 37075, Göttingen, Germany.
authors.forename: Robin
authors.initials: R
authors.lastname: Hoffmann
authors.affiliation: Department of Preventive Dentistry, Periodontology and Cariology, University Medical Center Göttingen, Robert-Koch-Str. 40, 37075, Göttingen, Germany.
authors.forename: Claudia
authors.initials: C
authors.lastname: Tschammler
authors.affiliation: Department of Medical Statistics, University Medical Center Göttingen, Humboldtallee 32, Göttingen, 37073, Germany.
authors.forename: Jochen
authors.initials: J
authors.lastname: Kruppa
authors.affiliation: Department of Preventive Dentistry, Periodontology and Cariology, University Medical Center Göttingen, Robert-Koch-Str. 40, 37075, Göttingen, Germany.
authors.forename: Tina
authors.initials: T
authors.lastname: Rödig
authors.affiliation: Department of Preventive Dentistry, Periodontology and Cariology, University Medical Center Göttingen, Robert-Koch-Str. 40, 37075, Göttingen, Germany.
authors.forename: Annette
authors.initials: A
authors.lastname: Wiegand
mesh_terms: D000328:Adult; D058250:Dental Restoration Repair / Q000706:statistics & numerical data*; D005260:Female; D005858:Germany; D006801:Humans; D008297:Male; D008875:Middle Aged; D019239:Practice Patterns, Dentists' / Q000706:statistics & numerical data*; D011795:Surveys and Questionnaires
keywords: Experience; Patient’s acceptance; Questionnaire; Repair restorations; Success