Investigating interocclusal perception in tactile teeth sensibility using symmetric and asymmetric analysis

Enkling, Norbert; Nicolay, Claudia; Bayer, Stefan; Mericske-Stern, Regina; Utz, Karl-Heinz (2010). Investigating interocclusal perception in tactile teeth sensibility using symmetric and asymmetric analysis. Clinical oral investigations, 14(6), pp. 683-90. Berlin: Springer-Verlag 10.1007/s00784-009-0348-3

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The purpose of this clinical trial was to determine the active tactile sensibility of natural teeth and to obtain a statistical analysis method fitting a psychometric function through the observed data points. On 68 complete dentulous test persons (34 males, 34 females, mean age 45.9 ± 16.1 years), one pair of healthy natural teeth each was tested: n = 24 anterior teeth and n = 44 posterior teeth. The computer-assisted, randomized measurement was done by having the subjects bite on thin copper foils of different thickness (5-200 µm) inserted between the teeth. The threshold of active tactile sensibility was defined by the 50% value of correct answers. Additionally, the gradient of the sensibility curve and the support area (90-10% value) as a description of the shape of the sensibility curve were calculated. For modeling the sensibility curve, symmetric and asymmetric functions were used. The mean sensibility threshold was 14.2 ± 12.1 µm. The older the subject, the higher the tactile threshold (r = 0.42, p = 0.0006). The support area was 41.8 ± 43.3 µm. The higher the 50% threshold, the smaller the gradient of the curve and the larger the support area. The curves showing the active tactile sensibility of natural teeth demonstrate a tendency towards asymmetry, so that the active tactile sensibility of natural teeth can mathematically best be described by using the asymmetric Weibull function.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > School of Dental Medicine > Department of Prosthodontics (discontinued)

UniBE Contributor:

Enkling, Norbert; Bayer, Stefan and Mericske, Regina

ISSN:

1432-6981

Publisher:

Springer-Verlag

Language:

English

Submitter:

Eveline Carmen Schuler

Date Deposited:

04 Oct 2013 14:08

Last Modified:

26 Jun 2018 15:46

Publisher DOI:

10.1007/s00784-009-0348-3

PubMed ID:

19816719

Web of Science ID:

000284155700009

BORIS DOI:

10.7892/boris.471

URI:

https://boris.unibe.ch/id/eprint/471 (FactScience: 199475)

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