title: A new analyzing method for quantification of abrasion on the Bruxcore device for sleep bruxism diagnosis.
abstract: OBJECTIVE
  To evaluate a newly developed semi-automatic computer-based method to analyze the objectivity of the Bruxcore Bruxism-Monitoring Device (BBMD) by assessing the interrater reliability. The capability of the BBMD to differentiate between sleep bruxers (SB) and healthy controls was also verified by estimating the sensitivity, specificity, and predictive values.
  
  
  METHODS
  Forty-eight SB and 21 controls took part in this investigation. After a detailed clinical dental examination, each participant received a BBMD to be worn for 5 consecutive nights. The BBMDs were then scanned and rated by 2 independent examiners using the new method, which counted the abraded area in pixels. Interrater reliability was assessed by intraclass correlation coefficient (ICC) analyses.
  
  
  RESULTS
  The analyses showed a very high interrater reliability of ICC = 0.99, and comparison of the mean pixel scores revealed values that were approximately 8 times higher for the SB than for the controls. With a selected pixel score cutoff point of 2900, a sensitivity of 79.2% and a specificity of 95.2% were found. The clinical diagnosis was correctly predicted in 97.4% of the SB and 66.7% of the controls.
  
  
  CONCLUSIONS
  The results support the assumption that the newly developed analyzing method for the assessment of the BBMD is a clinically suitable, objective, and applicable method that seems to be able to differentiate between SB and a healthy control sample. These data, however, need to be confirmed in further investigations using polysomnographic recordings.
authors.affiliation: Department of Operative and Preventive Dentistry and Endodontics, Heinrich-Heine-University, Moorenstr. 5 40225 Duesseldorf, Germany. Michelle.Ommerborn@uni-duesseldorf.de
authors.forename: Michelle A
authors.initials: MA
authors.lastname: Ommerborn
authors.forename: Maria
authors.initials: M
authors.lastname: Giraki
authors.forename: Christine
authors.initials: C
authors.lastname: Schneider
authors.forename: Ralf
authors.initials: R
authors.lastname: Schaefer
authors.forename: Andreas
authors.initials: A
authors.lastname: Gotter
authors.forename: Matthias
authors.initials: M
authors.lastname: Franz
authors.forename: Wolfgang H M
authors.initials: WH
authors.lastname: Raab
mesh_terms: D000328:Adult; D003748:Dental Equipment; D003936:Diagnosis, Computer-Assisted / Q000379:methods*; D004812:Epidemiologic Methods; D004867:Equipment Design; D005260:Female; D006801:Humans; D008297:Male; D020186:Sleep Bruxism / Q000175:diagnosis*; D014072:Tooth Abrasion / Q000175:diagnosis*