Reliability of an ear-bow arbitrary face-bow transfer instrument.

D. G. Choi, J. F. Bowley, David B Marx, S. Lee

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

STATEMENT OF PROBLEM: Accuracy of techniques for recording the orientation of the maxillary arch to the articulation of the temporomandibular joints has been reported. The variability contributed by the dentist and the equipment within a technique may also contribute to technical error. PURPOSE: This study investigated the variability of a group of dentists who used an arbitrary ear-face-bow instrument to mount a maxillary cast. MATERIAL AND METHODS: The same maxillary cast on a single experimental subject was mounted on an articulator with a common arbitrary ear-face-bow instrument. This cast was equipped with 4 reference points for the measurement of changes of spatial orientation of the cast, which were determined through coordinate measurements with a machinist's microscope. A repeated measures analysis of variance was used to determine statistically significant changes in spatial orientation with a Wilks' Lambda test to compare mean values. RESULTS: A confidence interval of 95% demonstrated that any dentist might expect a range of +/-1.2 mm error in using this instrument/articulator combination. The 3 dentists did not demonstrate any significant differences in the spatial orientation of their mountings in the vertical or horizontal directions. However, there were significant differences in their mountings in linear distance changes of the patient's posterior right side. CONCLUSION: A range of inherent error attributable to the operator using this instrument was recorded.

Original languageEnglish (US)
Pages (from-to)150-156
Number of pages7
JournalThe Journal of prosthetic dentistry
Volume82
Issue number2
DOIs
StatePublished - Jan 1 1999

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Dentists
Ear
Dental Articulators
Temporomandibular Joint
Patient Rights
Analysis of Variance
Confidence Intervals
Equipment and Supplies

ASJC Scopus subject areas

  • Oral Surgery

Cite this

Reliability of an ear-bow arbitrary face-bow transfer instrument. / Choi, D. G.; Bowley, J. F.; Marx, David B; Lee, S.

In: The Journal of prosthetic dentistry, Vol. 82, No. 2, 01.01.1999, p. 150-156.

Research output: Contribution to journalArticle

Choi, D. G. ; Bowley, J. F. ; Marx, David B ; Lee, S. / Reliability of an ear-bow arbitrary face-bow transfer instrument. In: The Journal of prosthetic dentistry. 1999 ; Vol. 82, No. 2. pp. 150-156.
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