title: Wear behavior of seven artificial resin teeth assessed with three-dimensional measurements.
abstract: BACKGROUND
  Artificial resin teeth are widely used for removable dental prostheses because of their excellent properties. An evaluation of their wear behavior is important for predicting good clinical performance.
  
  
  OBJECTIVE
  The purpose of the study was to examine the wear behavior of 7 different artificial resin teeth with 3-dimensional measurements.
  
  
  METHODS
  The artificial denture teeth tested were 2 composite resin teeth (Yamahachi PX, Huge Kaijing), 3 cross-linked acrylic resin teeth (Cosmo HXL, Premium 8, Vita Lingoform), and 2 conventional acrylic resin teeth (Yamahachi FX, Shengjian). The specimens were subjected to an abrasive tester for masticatory simulation. The wear loss (vertical loss and volume loss) was determined with a confocal laser scanning microscope. Data were analyzed with 1-way ANOVA followed by the Games-Howell post hoc test (α=.05).
  
  
  RESULTS
  The mean vertical loss and volume loss for all cross-linked acrylic resin teeth (0.987-1.03 μm, 0.858-0.939 mm(3) × 10(-3)) were higher than for all composite resin teeth (0.636-0.698 μm, 0.507-0.650 mm(3) × 10(-3), P<.001) but lower than those for conventional acrylic resin teeth Yamahachi FX and Shengjian (1.39 μm, 1.24 mm(3) × 10(-3); 12.1 μm, 16.4 mm(3) × 10(-3); P<.001). No significant differences for wear loss were found between the Vita Lingoform group and the other cross-linked acrylic resin teeth (P>.05).
  
  
  CONCLUSIONS
  The wear behavior of the artificial teeth examined differed with regard to their compositions. The composite resin teeth and high cross-linked acrylic resin teeth found superior wear resistance over the conventional acrylic resin teeth.
authors.affiliation: Postgraduate student, State Key Laboratory of Oral Diseases; Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, China.
authors.forename: Zhichao
authors.initials: Z
authors.lastname: Hao
authors.affiliation: Postgraduate student, Department of Stomotology, the 2nd People's Hospital of Neijiang, Chengdu, PR China.
authors.forename: Hongmin
authors.initials: H
authors.lastname: Yin
authors.affiliation: Postgraduate student, Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, China.
authors.forename: Linxia
authors.initials: L
authors.lastname: Wang
authors.affiliation: Associate Professor, State Key Laboratory of Oral Diseases; Department of Prosthodontics, Prosthodontics, West China Hospital of Stomatology, Sichuan University, China. Electronic address: yukunmeng@hotmail.com.
authors.forename: Yukun
authors.initials: Y
authors.lastname: Meng
mesh_terms: D000180:Acrylic Resins / Q000737:chemistry*; D002516:Ceramics / Q000737:chemistry; D003188:Composite Resins / Q000737:chemistry*; D003764:Dental Materials / Q000737:chemistry*; D019554:Dental Restoration Wear; D017276:Friction; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods; D021621:Imaging, Three-Dimensional / Q000379:methods*; D008422:Materials Testing; D018613:Microscopy, Confocal; D008855:Microscopy, Electron, Scanning; D011108:Polymers / Q000737:chemistry; D011109:Polymethacrylic Acids / Q000737:chemistry; D019904:Polymethyl Methacrylate / Q000737:chemistry; D012464:Saliva, Artificial / Q000737:chemistry; D017655:Silicon Compounds / Q000737:chemistry; D013314:Stress, Mechanical; D013499:Surface Properties; D013696:Temperature; D014093:Tooth, Artificial
chemical_list: D000180:Acrylic Resins; D003188:Composite Resins; D003764:Dental Materials; D011108:Polymers; D011109:Polymethacrylic Acids; D012464:Saliva, Artificial; D017655:Silicon Compounds; C102860:polyfluoromethacrylate; D019904:Polymethyl Methacrylate; C032734:silicon nitride