title: Two-year clinical evaluation of Cerec 3D ceramic inlays inserted by undergraduate dental students.
abstract: OBJECTIVE
  To evaluate the clinical results of final-year dental students' clinical performance after a practical computer-based course and training in the new Cerec 3 method.
  
  
  METHODS
  Cerec 3D restorations (Sirona) were made and inserted in patients by 50 dental students. The students were in their final semester in the Department of Operative Dentistry. Before treatment of the patients began, the students had undergone computer-based Cerec 3D training. The training included lessons comprising the whole Cerec procedure from planning to insertion of the restoration. Vital permanent premolars or molars requiring a 2- or 3-surface restoration were selected for the study. The evaluation started 1 week after luting. The inlays were examined in accordance with the US Public Health Service (USPHS) criteria at baseline and after 6, 12, and 24 months.
  
  
  RESULTS
  The 2-year survival rate of the restorations was estimated to be 93.3% according to Kaplan-Meier. No statistically significant changes were observed in color match, surface texture, and anatomic form. The decrease of pulpal hypersensitivity during the observation period was statistically significant (P <.05).
  
  
  CONCLUSIONS
  Dental students are capable of delivering demanding clinical tasks after appropriate training. The introduction of CAD/CAM restorations to the dental curriculum resulted in high short-term success rates. Further investigations are required to evaluate the long-term success of those restorations. To achieve a clinically adequate performance, it is necessary to consider the basic rules and technology associated with ceramic restorations.
authors: Department of Operative Dentistry and Periodontology, University School and Dental Hospital, Albert-Ludwigs-University of Freiburg, Freiburg, Germany. thomas.wrbas@uniklinik-freiburg.de
authors: Karl-Thomas
authors: KT
authors: Wrbas
authors: Nicole
authors: N
authors: Hein
authors: Jörg Fabian
authors: JF
authors: Schirrmeister
authors: Markus Jörg
authors: MJ
authors: Altenburger
authors: Elmar
authors: E
authors: Hellwig
mesh_terms: D000328:Adult; D001641:Bicuspid; D002484:Cementation / Q000009:adverse effects; D002983:Clinical Competence; D017076:Computer-Aided Design; D003194:Computer-Assisted Instruction; D018772:Dental Marginal Adaptation; D003776:Dental Porcelain; D017267:Dental Prosthesis Design; D019232:Dental Restoration Failure; D003807:Dentin Sensitivity / Q000209:etiology; D003814:Dentistry, Operative / Q000193:education*; D005260:Female; D006801:Humans; D007284:Inlays; D053208:Kaplan-Meier Estimate; D008297:Male; D008875:Middle Aged; D008963:Molar; D013335:Students, Dental
chemical_list: D003776:Dental Porcelain