Heikki Kiviahde1, Lea Bukovac2, Päivi Jussila1, Paula Pesonen1, Kirsi Sipilä1,3, Aune Raustia1, Pertti Pirttiniemi1. 1. a Institute of Dentistry, University of Oulu, Medical Research Center Oulu, Oulu University Hospital and University of Oulu , Oulu , Finland. 2. b Medical Faculty, Department of Dental Medicine , University of Ljubljana , Ljubljana , Slovenia. 3. c Institute of Dentistry, University of Eastern Finland, Oral and Maxillofacial Department, Kuopio University Hospital , Kuopio , Finland.
Abstract
OBJECTIVES: The purpose of this study was to evaluate the accuracy and reliability of inter-arch measurements using digital dental models and conventional dental casts. METHODS: Thirty sets of dental casts with permanent dentition were examined. Manual measurements were done with a digital caliper directly on the dental casts, and digital measurements were made on 3D models by two independent examiners. Intra-class correlation coefficients (ICC), a paired sample t-test or Wilcoxon signed-rank test, and Bland-Altman plots were used to evaluate intra- and inter-examiner error and to determine the accuracy and reliability of the measurements. RESULTS: The ICC values were generally good for manual and excellent for digital measurements. The Bland-Altman plots of all the measurements showed good agreement between the manual and digital methods and excellent inter-examiner agreement using the digital method. CONCLUSION: Inter-arch occlusal measurements on digital models are accurate and reliable and are superior to manual measurements.
OBJECTIVES: The purpose of this study was to evaluate the accuracy and reliability of inter-arch measurements using digital dental models and conventional dental casts. METHODS: Thirty sets of dental casts with permanent dentition were examined. Manual measurements were done with a digital caliper directly on the dental casts, and digital measurements were made on 3D models by two independent examiners. Intra-class correlation coefficients (ICC), a paired sample t-test or Wilcoxon signed-rank test, and Bland-Altman plots were used to evaluate intra- and inter-examiner error and to determine the accuracy and reliability of the measurements. RESULTS: The ICC values were generally good for manual and excellent for digital measurements. The Bland-Altman plots of all the measurements showed good agreement between the manual and digital methods and excellent inter-examiner agreement using the digital method. CONCLUSION: Inter-arch occlusal measurements on digital models are accurate and reliable and are superior to manual measurements.
Keywords:
3D models; Orthodontics; digital measurement; inter-arch measurements