title: [Comparison of shortened dental arches with complete dental arches by clinical examinations].
abstract: OBJECTIVE
  Recently, there have been reports in favor of avoiding prosthodontic intervention as Shortened Dental Arch (SDA) in Northern Europe. However, many of these reports were conducted through interviews and questionnaires, and so the evaluation of the results lacked objectivity. Thus, this research analyzed the clinical status of SDA.
  
  
  METHODS
  For the selection of subjects, seven patients (average age: 59.3+/-13.2 years old) who had had the free-end missing on both sides of the lower dental arches for over five years were chosen as the SDA group. As the complete dental arch (CDA) group, seven patients (average age: 61.3+/-9.6 years old) who had no clinical defects in their masticatory function, and who had no missing teeth other than the third molar, were selected. Measurement items in this study were occlusal contact areas for the mandible premolar, center of force, occlusion time, and interdentium. The Mann-Whitney U test was used for statistical analysis and the significance level was assumed to be 5%.
  
  
  RESULTS
  The results were as follows: 1) The occlusal contact area of the mandible premolar of SDA was significantly large. 2) The center of force of SDA was significantly forward. 3) The occlusion time of SDA had a tendency of prolongation. 4) Interdentium of 3 2 | 2 3, 4 3 | 3 4 and 5 4 | 4 5 of SDA were significantly wide.
  
  
  CONCLUSIONS
  There were differences of clinical parameters between SDA and CDA in this study.
authors.affiliation: Department of Fixed Prosthodontics and Occlusion, Osaka Dental University. arai-k@stu.osaka-dent.ac.jp
authors.forename: Korenori
authors.initials: K
authors.lastname: Arai
authors.forename: Akiko
authors.initials: A
authors.lastname: Tsurumi
authors.forename: Tomonori
authors.initials: T
authors.lastname: Takao
authors.forename: Hyeon-mook
authors.initials: HM
authors.lastname: Kim
authors.forename: Yasuhiro
authors.initials: Y
authors.lastname: Ishida
authors.forename: Masahiro
authors.initials: M
authors.lastname: Tanaka
authors.forename: Takayoshi
authors.initials: T
authors.lastname: Kawazoe
mesh_terms: D000368:Aged; D003724:Dental Arch / Q000002:abnormalities* / Q000502:physiology / Q000503:physiopathology*; D003766:Dental Occlusion; D019317:Evidence-Based Medicine; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D008963:Molar / Q000502:physiology; D016388:Tooth Loss / Q000503:physiopathology; D014085:Tooth Migration