Original scientific paper
https://doi.org/10.15644/asc51/1/2
Reproducibility of Centric Relation Techniques by means of Condyle Position Analysis
Nikolina Holen Galeković
; Health Center Zagreb Zapad, Albaharijeva 5, 10000 Zagreb, Croatia
Vesna Fugošić
; Department of Prosthodontics, Medical Faculty, University of Rijeka, Kresimirova 40, 51000 Rijeka, Croatia
Vedrana Braut
; Department of Prosthodontics, Medical Faculty, University of Rijeka, Kresimirova 40, 51000 Rijeka, Croatia
Robert Ćelić
orcid.org/0000-0002-5197-3465
; Department of Removable Prosthodontics, School of Dental Medicine, University of Zagreb, Ivana Gundulića 5, 10000 Zagreb, Croatia
Abstract
Purpose: The aim of this study was to determine the reproducibility of clinical centric relation (CR) registration techniques (bimanual manipulation, chin point guidance and Roth’s method) by means of condyle position analysis. Material and methods: Thirty two fully dentate asymptomatic subjects (16 female and 16 male) with normal occlusal relations (Angle class I) participated in the study (mean age, 22.6 ± 4.7 years). The mandibular position indicator (MPI) was used to analyze the three-dimensional (anteroposterior (ΔX), superoinferior (ΔZ), mediolateral (ΔY)) condylar shift generated by the difference between the centric relation position (CR) and the maximal intercuspation position (MI) observed in dental arches. Results: The mean value and standard deviation of three-dimensional condylar shift of the tested clinical CR techniques was 0.19 ± 0.34 mm. Significant differences within the tested clinical CR registration techniques were found for anteroposterior condylar shift on the right side posterior (Δ Xrp; P ≤ 0.012); and superoinferior condylar shift on the left side inferior (Δ Zli; P ≤ 0.011), whereas between the tested CR registration techniques were found for anteroposterior shift on the right side posterior (ΔXrp, P ≤ 0.037) and superoinferior shift on the right side inferior (ΔZri, P ≤ 0.004), on the left side inferior (ΔZli, P ≤ 0.005) and on the left side superior (ΔZls, P ≤ 0.007). Conclusion: Bimanual manipulation, chin point guidance and Roth’s method are clinical CR registration techniques of equal accuracy and reproducibility in asymptomatic subjects with normal occlusal relationship.
Keywords
Dental Occlusion; Centric Relation; Mandibular Condyle; Bimanual Manipulation; Chin Point Guidance; Roth’s Method; Mandibular Position Indicator
Hrčak ID:
177487
URI
Publication date:
17.3.2017.
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