title: [Layer thickness of dental adhesives. Relation between layer thickness and viscosity].
abstract: OBJECTIVE
  To investigate the viscosity of two dental adhesives in relation to the adhesive layer thickness.
  
  
  METHODS
  In vitro study.
  
  
  METHODS
  The viscosity of several dental adhesives has been determined with a reogoneometer. Both a high and a low viscous adhesive was used to restore class II preparations. These restorations were sectioned and the thickness of the adhesive layer was measured on several defined locations. A statistical analysis was performed.
  
  
  RESULTS
  The high viscous adhesive resulted in a thinner layer along the cervical outline of the restoration. With both materials pooling occurred at the line angles of the preparation. On the flat surfaces of the preparations there was a layer of even thickness.
  
  
  CONCLUSIONS
  The differences in thickness of the adhesive layer as often seen on radiographs cannot be explained solely by the use of adhesives with a different viscosity.
authors.affiliation: Sector Preventieve en Curatieve Tandheelkunde, Katholieke Universiteit Nijmegen, postbus 9101, 6500 HB Nijmegen.
authors.forename: R H
authors.initials: RH
authors.lastname: Kuijs
authors.forename: R C
authors.initials: RC
authors.lastname: Burgersdijk
authors.forename: F J
authors.initials: FJ
authors.lastname: Roeters
mesh_terms: D003738:Dental Cements / Q000032:analysis* / Q000737:chemistry; D003764:Dental Materials / Q000032:analysis; D003793:Dental Restoration, Permanent / Q000379:methods*; D006801:Humans; D066298:In Vitro Techniques; D008422:Materials Testing; D019279:Resin Cements / Q000032:analysis* / Q000737:chemistry; D013499:Surface Properties; D014783:Viscosity
chemical_list: D003738:Dental Cements; D003764:Dental Materials; D019279:Resin Cements; C095998:Adhesive cement
vernacular_title: Laagdikte van hechtlakken. Relatie laagdikte en viscositeit.