Time of day-dependent deviations in dynamic and static occlusion: A prospective clinical study.

Autor: Wiechens B; Postdoctoral Researcher, Doctor of Medicine in Dentistry, Department of Prosthodontics and Department of Orthodontics, University Medical Center Göttingen, Göttingen, Germany. Electronic address: bernhard.wiechens@med.uni-goettingen.de., Brockmeyer P; Senior Physician, Doctor of Medicine, Doctor of Medicine in Dentistry, PhD, Department of Maxillofacial Surgery, University Medical Center Göttingen, Göttingen, Germany., Wassmann T; Senior Physician, Doctor of Medicine in Dentistry, Department of Prosthodontics, University Medical Center Göttingen, Göttingen, Germany., Rödiger M; Assistant Professor, Doctor of Medicine in Dentistry, PhD, Department of Prosthodontics, University Medical Center Göttingen, Göttingen, Germany., Wiessner A; Postdoctoral Researcher, Doctor of Medicine in Dentistry, Department of Prosthodontics, University Medical Center Göttingen, Göttingen, Germany., Bürgers R; Professor and Head of Department, Doctor of Medicine in Dentistry, PhD, Department of Prosthodontics, University Medical Center Göttingen, Göttingen, Germany.
Jazyk: angličtina
Zdroj: The Journal of prosthetic dentistry [J Prosthet Dent] 2024 Jul; Vol. 132 (1), pp. 123-131. Date of Electronic Publication: 2022 Jul 07.
DOI: 10.1016/j.prosdent.2022.05.025
Abstrakt: Statement of Problem: The registration of dental occlusion is essential for prosthodontic treatment. However, studies on time-dependent changes of static and dynamic occlusion that may affect definitive restorations are lacking.
Purpose: The purpose of this prospective clinical study was to use conventional and digital occlusal registration techniques to evaluate time-dependent fluctuations in static and dynamic occlusion.
Material and Methods: The static and dynamic occlusion of 19 healthy individuals (14 women and 5 men with a mean ±standard deviation age of 30.8 ±4.8 years) was examined 3 times a day using occlusal foil (12-μm occlusion foil) and a digital sensor (T-Scan III). The procedure was repeated after 14 days. The statistical analysis covered all registrations referencing the first measurement point to assess occurring differences, and changes per tooth and arch were determined (α=.05). Potential influencing factors were calculated by using mixed logistic regression. Marginal probabilities were calculated considering the registration technique and the time of measurement.
Results: Significant differences were found between registered occlusal patterns and the different registration techniques. Occlusal changes per maxillary dental arch were observed with static foil registration (P<.001; 98.8%), left laterotrusion foil registration (P=.001; 29.6%), right laterotrusion foil registration (P=.001; 29.6%), static sensor registration (P<.001; 20.3%), left laterotrusion sensor registration (P=.001; 71.7%), and right laterotrusion sensor registration (P=.005; 67.7%). None of the techniques showed higher probabilities of occlusal changes at a given time of day with respect to time-dependent changes.
Conclusions: The study revealed that occlusion cannot be considered constant and that the topography and intensity of the contact points vary. Circadian occlusion variance can be assumed without preferring a specific time of the day. This differentiated view of occlusion as a changing system helps to clarify the challenge of dental restorations for both the patient and the practitioner.
(Copyright © 2022 Editorial Council for the Journal of Prosthetic Dentistry. Published by Elsevier Inc. All rights reserved.)
Databáze: MEDLINE
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