title: Shear bond strength of composite resin to titanium according to various surface treatments.
abstract: BACKGROUND
  When veneering composite resin-metal restoration is prepared, the fact that bond strength between Ti and composite resin is relatively weak should be considered.
  
  
  OBJECTIVE
  The purpose of this study is to evaluate the shear bond strength between the veneering composite resin and commercial pure (CP) Ti / Ti-6Al-4V alloy according to the method of surface treatment.
  
  
  METHODS
  The disks were cast by two types of metal. Their surfaces were treated by sandblasting, metal conditioner, TiN coating and silicoating respectively. After surface treatment, the disks were veneered by composite resin (Tescera™, Bisco, USA) which is 5 mm in diameter and 3 mm in thickness. The specimens were stored in water at 25℃ for 24 hours, and then evaluated for their shear bond strength by universal testing machine (STM-5®, United Calibration, USA). These values were statistically analyzed.
  
  
  RESULTS
  1. All methods of surface treatment were used in this study satisfied the requirements of ISO 10477 which is the standard of polymer-based crown and bridge materials. 2. The metal conditioner treated group showed the highest value in shear bond strength of CP Ti, silicoated group, TiN coated group, sandblasted group, in following order. 3. The silicoated group showed the highest value in shear bond strength of Ti-6Al-4V alloy, metal conditioner treated group, sandblasted group, TiN coated group, in following order.
  
  
  CONCLUSIONS
  Within the limitations of this study, all methods of surface treatment used in this study are clinically available.
authors.affiliation: Graduate Student, Department of Prosthodontics, Graduate School, Chonnam National University, Gwangju, Korea.
authors.forename: Seung-Yun
authors.initials: SY
authors.lastname: Lee
authors.forename: Mong-Sook
authors.initials: MS
authors.lastname: Vang
authors.forename: Hong-So
authors.initials: HS
authors.lastname: Yang
authors.forename: Sang-Won
authors.initials: SW
authors.lastname: Park
authors.forename: Ha-Ok
authors.initials: HO
authors.lastname: Park
authors.forename: Hyun-Pil
authors.initials: HP
authors.lastname: Lim