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Article

Digital Quantification of Occlusal Contacts: A Methodological Study

Department of Orthodontics, Sahlgrenska Academy, University of Gothenburg, SE-40530 Gothenburg, Sweden
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Author to whom correspondence should be addressed.
Academic Editors: Roberto Rongo, Gianrico Spagnuolo and Joseph Antoun
Int. J. Environ. Res. Public Health 2021, 18(10), 5297; https://doi.org/10.3390/ijerph18105297
Received: 22 March 2021 / Revised: 6 May 2021 / Accepted: 8 May 2021 / Published: 16 May 2021
Objective: To compare the reliability of digital occlusal contacts quantification and the validity of digital occlusal contacts quantification with traditional methods used for occlusal contact determination. Subjects and Methods: Thirty participants, all of whom were students at the Sahlgrenska Academy, University of Gothenburg in Gothenburg, Sweden, were included in the study. Three different methods were used to evaluate occlusal contacts: (I) a digital examination of the patients’ casts, using the Ortho 3D Models (O3DM) software and measuring the total occlusal contact area in square millimeters (DE); (II) an examination involving the measurement of the total number of occlusal contacts on stone casts mounted in an articulator (AE); and (III) a clinical examination with the measurement of the total number of occlusal contacts with 8 μm-thick articulating foil (CE). Results: The repeated digital measurements (same casts scanned multiple times) showed a significant correlation of 0.85 (p < 0.01), which shows a diagnostic consistency. Furthermore, there was a significant correlation between the results obtained with the DE method and the AE of 0.41 (p < 0.05), and between those acquired with the AE method and the CE of 0.37 (p < 0.05). However, no significant correlation was found between the DE method and the CE method with a correlation coefficient of 0.10 (p > 0.05). Conclusions: Digital casts can be used for quantification of the total occlusal contact area (in mm2) owing to the high reliability of repeated measurements and the strong validity of the method compared to traditionally employed stone cast measurements. View Full-Text
Keywords: occlusion; occlusal contacts; digital casts; digital models; orthodontics occlusion; occlusal contacts; digital casts; digital models; orthodontics
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MDPI and ACS Style

Sigvardsson, J.; Nilsson, S.; Ransjö, M.; Westerlund, A. Digital Quantification of Occlusal Contacts: A Methodological Study. Int. J. Environ. Res. Public Health 2021, 18, 5297. https://doi.org/10.3390/ijerph18105297

AMA Style

Sigvardsson J, Nilsson S, Ransjö M, Westerlund A. Digital Quantification of Occlusal Contacts: A Methodological Study. International Journal of Environmental Research and Public Health. 2021; 18(10):5297. https://doi.org/10.3390/ijerph18105297

Chicago/Turabian Style

Sigvardsson, Jacob; Nilsson, Samuel; Ransjö, Maria; Westerlund, Anna. 2021. "Digital Quantification of Occlusal Contacts: A Methodological Study" Int. J. Environ. Res. Public Health 18, no. 10: 5297. https://doi.org/10.3390/ijerph18105297

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