title: [Evaluation on the application of mechanical toothguide training box to chromatics teaching of prosthodontics].
abstract: OBJECTIVE
  To evaluate the effectiveness on the application of mechanical toothguide training box (TTB) to chromatics teaching of prosthodontics.
  
  
  METHODS
  12 preclinical undergraduate students were chosen to participate in the VITA 3D-Master shade-matching system simulant toothguide training process using Linearguide Training Box program of TTB. Toothguide Trainer program considered as a test was performed on the trained undergraduate students group, the postgraduate students group as well as the clinical prosthodontists group with under 5-year clinical experience. The test scores, elapsed time and the coincidence of chromatics single factor matching were recorded each time, the shade-matching efficiency was calculated. The data was analyzed with SPSS 13.0 software.
  
  
  RESULTS
  The shade-matching efficiency of undergraduate students trained by TTB (64.03 +/- 18.82) was significantly higher than before (P < 0.05), higher than the postgraduate students group and the clinical prosthodontists group (P < 0.05). The coincidence of chromatics single factor matching of trained undergraduate students were 64.64% (lightness), 88.57% (chroma), 87.70% (hue).
  
  
  CONCLUSIONS
  TTB is a effective tool for shade-mathing practice in chromatics teaching of prosthodontics. The trained undergraduate students are less sensitive in lightness-matching.
authors.affiliation: Dept. of Prosthodontics, School of Stomatology, China Medical University, Shenyang 110002, China.
authors.forename: Fengxue
authors.initials: F
authors.lastname: Geng
authors.forename: Jiayue
authors.initials: J
authors.lastname: Yin
mesh_terms: D006801:Humans; D017797:Prosthesis Coloring; D011476:Prosthodontics; D012984:Software