title: The adhesion of modern soft relining materials to acrylic dentures.
abstract: BACKGROUND
  Silicone-based liners are widespread materials in prosthetic dentistry. Their mechanical properties have to meet several key requirements such as adequate adhesion to denture base polymers in order to provide right function of masticatory system and oral hygiene.
  
  
  OBJECTIVE
  The aim of this paper was to evaluate and compare tensile and shear bond strengths values of three modern autopolimeryzed silicone relining materials bonded to acrylic plates.
  
  
  METHODS
  Three silicone-based soft relining materials were investigated in this study (A-Soft Line 30, Bosworth Dentusil and Elite Super Soft). A total of 78 specimens were prepared: 13 of each material (total: 39) for testing tensile bond strength and 13 of each material for testing shear bond strength (total: 39). The obtained data were analyzed statistically.
  
  
  RESULTS
  The average tensile bond strength results were 0.86 MPa for Bosworth Dentusil, 1.00 MPa for Elite Super Soft and 1.25 MPa for A-Soft Line 30. The silicone-based relining materials had different average values of shear bond strength: 0.67 MPa Elite Super Soft; 1.32 MPa A-Soft Line 30 and 1.57 MPa Bosworth Dentusil.
  
  
  CONCLUSIONS
  As the result of the study it can be concluded that all tested materials have acceptable adhesion values to acrylic resin. According to tensile and shear bond strengths tests the best adhesive properties has A-Soft Line 30.
authors.affiliation: Department of Dental Prosthetics, Wroclaw Medical University, Poland.
authors.forename: Włodzimierz
authors.initials: W
authors.lastname: Więckiewicz
authors.affiliation: Department of Dental Prosthetics in Zabrze, Medical University of Silesia in Katowice, Poland.
authors.forename: Jacek
authors.initials: J
authors.lastname: Kasperski
authors.affiliation: Division of Dental Materials, Wroclaw Medical University, Poland.
authors.forename: Mieszko
authors.initials: M
authors.lastname: Więckiewicz
authors.affiliation: Department of Dental Prosthetics, Wroclaw Medical University, Poland.
authors.forename: Marta
authors.initials: M
authors.lastname: Miernik
authors.affiliation: Department of Microbiology and Immunology in Zabrze, Medical University of Silesia in Katowice, Poland.
authors.forename: Wojciech
authors.initials: W
authors.lastname: Król
mesh_terms: D000180:Acrylic Resins; D000268:Adhesiveness; D001840:Dental Bonding; D003819:Denture Bases; D003822:Denture Liners; D012828:Silicones; D013718:Tensile Strength
chemical_list: D000180:Acrylic Resins; D012828:Silicones