title: Reliability of linear and angular dental measurements with the OrthoMechanics Sequential Analyzer.
abstract: BACKGROUND
  The aim of this study was to evaluate the reliability of newly developed software in the assessment of orthodontic tooth movement 3 dimensionally.
  
  
  METHODS
  The sample consisted of pretreatment and posttreatment computed tomography scans and plaster dental models of 20 orthodontic patients treated with a hyrax palatal expander as a part of their comprehensive orthodontic treatment. Dental-arch measurements, including arch widths, tooth inclinations, and angulation parameters, were measured on the scans using InvivoDental 3D imaging software (version 5.1; Motionview, Hixson, Tenn). The plaster dental models were laser scanned and superimposed, and measurements were obtained digitally using the new software. Agreement between the digital models and the computed tomography measurements was evaluated with intraclass correlation coefficients, paired t tests, and Bland-Altman plots. A P value of ≤0.05 was considered statistically significant.
  
  
  RESULTS
  High agreement, a nonsignificant paired t test, and no indication of agreement discrepancies were observed for most of the measured parameters.
  
  
  CONCLUSIONS
  The results confirmed that the new software program offers a reliable tool for dental-arch measurements obtained from 3-dimensional laser-scanned models.
authors: Assistant lecturer, Department of Orthodontics, College of Dentistry, Future University of Egypt, Cairo, Egypt.
authors: Sameh
authors: S
authors: Talaat
authors: Assistant professor, Department of Computer Science, El Shorouk Academy, New Cairo, Egypt.
authors: Ahmed
authors: A
authors: Kaboudan
authors: Assistant professor, Department of Orthodontics and Craniofacial Biology, Radboud University, Nijmegen, The Netherlands.
authors: Hero
authors: H
authors: Breuning
authors: Professor, Department of Oral Medicine, Periodontology and Oral Radiology, College of Dentistry, Future University of Egypt, Cairo, Egypt.
authors: Nivine
authors: N
authors: Ragy
authors: Orthodontic resident, Case Western Reserve University, Cleveland, Ohio; teaching assistant, Department of Orthodontics, College of Dentistry, Future University of Egypt, Cairo, Egypt.
authors: Tarek
authors: T
authors: Elshebiny
authors: Chair and Jarabak Endowed Professor, Department of Orthodontics and Oral Facial Genetics, Indiana University School of Dentistry, Indianapolis, Ind.
authors: Katherine
authors: K
authors: Kula
authors: Assistant professor, Department of Orthodontics and Oral Facial Genetics, Indiana University School of Dentistry, Indianapolis, Ind; lecturer, Department of Orthodontics, Faculty of Dental Medicine, Al-Azhar University, Cairo, Egypt. Electronic address: aghoneim@iu.edu.
authors: Ahmed
authors: A
authors: Ghoneima
mesh_terms: D000293:Adolescent; D002508:Cephalometry / Q000706:statistics & numerical data*; D002648:Child; D003481:Cuspid / Q000473:pathology; D003724:Dental Arch / Q000473:pathology; D005500:Follow-Up Studies; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000706:statistics & numerical data; D021621:Imaging, Three-Dimensional / Q000706:statistics & numerical data; D007180:Incisor / Q000473:pathology; D007834:Lasers; D003765:Models, Dental / Q000706:statistics & numerical data; D008963:Molar / Q000473:pathology; D010155:Palatal Expansion Technique; D015203:Reproducibility of Results; D012189:Retrospective Studies; D012399:Rotation; D012984:Software; D012986:Software Validation; D036542:Tomography, Spiral Computed / Q000706:statistics & numerical data; D014087:Tooth Movement Techniques / Q000706:statistics & numerical data*; D019415:Torque; D014584:User-Computer Interface