title: Influence of cavity lining and remaining dentin thickness on the occurrence of postoperative hypersensitivity of composite restorations.
abstract: OBJECTIVE
  To investigate the influence of the remaining dentin thickness after cavity preparation, calcium hydroxide lining, and two restorative systems on the occurrence of postoperative pain or hypersensitivity.
  
  
  METHODS
  One hundred twenty-three fillings were placed in 123 healthy patients. The remaining dentin thickness after caries excavation was measured with the Prepometer device at the deepest area of the cavity. The cavities were allocated to three different groups (shallow, medium, and deep) on the basis of the Prepometer results. The decision to use a calcium hydroxide liner or not was made by tossing a coin. Cavities which were to be later treated with an indirect restoration were restored with a buildup material. The other cavities were treated with a hybrid composite. After 6 months, the patients were re-examined and interviewed concerning postoperative pain incidents or hypersensitivity. A logistic regression was performed for the statistical analysis.
  
  
  RESULTS
  Logistic regression showed no statistically significant influence of any of the three different variables "cavity depth", "calcium hydroxide liner" and "restorative material" on the occurrence of pain or hypersensitivity.
  
  
  CONCLUSIONS
  The occurrence of pain or hypersensitivity does not depend on the remaining dentin thickness, calcium hydroxide lining, or the restorative system used in the present study.
authors.affiliation: Clinic for Preventive Dentistry, Periodontology and Cariology, University of Zürich, Zürich, Switzerland. florian.wegehaupt@zzmk.uzh.ch
authors.forename: Florian
authors.initials: F
authors.lastname: Wegehaupt
authors.forename: Herbert
authors.initials: H
authors.lastname: Betke
authors.forename: Nicole
authors.initials: N
authors.lastname: Solloch
authors.forename: Ulrike
authors.initials: U
authors.lastname: Musch
authors.forename: Annette
authors.initials: A
authors.lastname: Wiegand
authors.forename: Thomas
authors.initials: T
authors.lastname: Attin
mesh_terms: D002126:Calcium Hydroxide; D003188:Composite Resins / Q000009:adverse effects*; D003736:Dental Cavity Lining; D003737:Dental Cavity Preparation / Q000009:adverse effects; D003793:Dental Restoration, Permanent / Q000009:adverse effects*; D003804:Dentin / Q000473:pathology*; D003807:Dentin Sensitivity / Q000209:etiology*; D005260:Female; D006801:Humans; D016015:Logistic Models; D008297:Male; D008689:Methacrylates; D011109:Polymethacrylic Acids; D019279:Resin Cements
chemical_list: C112274:Clearfil Liner Bond 2; D003188:Composite Resins; C483522:LuxaCore; D008689:Methacrylates; D011109:Polymethacrylic Acids; C425843:Prime and Bond NT; D019279:Resin Cements; C420128:Spectrum composite resin; D002126:Calcium Hydroxide