title: Adhesion of maxillofacial silicone elastomer to a fiber-reinforced composite resin framework.
abstract: OBJECTIVE
  Recently, fiber-reinforced composite resin (FRC) has been introduced as a framework material for maxillofacial silicone prostheses. The purpose of this research was to study the tensile bond strength between a room temperature-polymerized maxillofacial silicone elastomer and a unidirectional FRC.
  
  
  METHODS
  Three different bonding agents were compared. Specimens were loaded in tension mode according to ISO 22401 in a universal testing device with a crosshead speed of 10 mm/min until bonding failure occurred. The influence of the surface characteristics (ground vs intact) was also studied.
  
  
  RESULTS
  The highest tensile bond strength was seen with Gold Platinum Primer A-330-G, followed by Sofreliner primer. One-way analysis of variance revealed that the surface treatment of the FRC and the adhesive used had a significant effect on tensile bond strength between silicone and FRC (P < .05). Grinding enhanced adhesion, especially with Gold Platinum Primer A-330-G and Sofreliner primer. The fracture type also changed to more cohesive in nature.
  
  
  CONCLUSIONS
  The FRC substructure can successfully be bonded to maxillofacial silicone elastomer by using primer containing methyl ethyl ketone and dichloromethane solvent. Bonding can be improved by roughening the FRC substrate via grinding.
authors.affiliation: Department of Oral and Maxillofacial Diseases, Vaasa Central Hospital, Finland. rosita.kantola@vshp.fi
authors.forename: Rosita
authors.initials: R
authors.lastname: Kantola
authors.forename: Lippo
authors.initials: L
authors.lastname: Lassila
authors.forename: Pekka
authors.initials: P
authors.lastname: Vallittu
mesh_terms: D000268:Adhesiveness; D002074:Butanones; D003188:Composite Resins; D005898:Glass; D008422:Materials Testing; D008447:Maxillofacial Prosthesis; D008752:Methylene Chloride; D011474:Prosthesis Design; D019279:Resin Cements / Q000737:chemistry*; D033081:Shear Strength; D012826:Silicone Elastomers; D013718:Tensile Strength
chemical_list: D002074:Butanones; D003188:Composite Resins; D019279:Resin Cements; D012826:Silicone Elastomers; C009753:fiberglass; D008752:Methylene Chloride; C005222:methylethyl ketone