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Titolo:
Changes in tooth pulpal detection and pain thresholds in relation to jaw movement in man
Autore:
Kemppainen, P; Vaalamo, I; Leppala, N; Pertovaara, A;
Indirizzi:
Univ Helsinki, Inst Dent, Dept Prosthet Dent, FIN-00014 Helsinki, Finland Univ Helsinki Helsinki Finland FIN-00014 nt, FIN-00014 Helsinki, Finland Univ Helsinki, Inst Biomed, Dept Physiol, FIN-00014 Helsinki, Finland UnivHelsinki Helsinki Finland FIN-00014 ol, FIN-00014 Helsinki, Finland Univ Turku, Dept Physiol, Inst Biomed, Turku, Finland Univ Turku Turku Finland rku, Dept Physiol, Inst Biomed, Turku, Finland
Titolo Testata:
ARCHIVES OF ORAL BIOLOGY
fascicolo: 1, volume: 46, anno: 2001,
pagine: 33 - 37
SICI:
0003-9969(200101)46:1<33:CITPDA>2.0.ZU;2-T
Fonte:
ISI
Lingua:
ENG
Soggetto:
NONPAINFUL ELECTRICAL-STIMULATION; PRIMARY SOMATOSENSORY CORTEX; CUTANEOUS SENSITIVITY; MODULATION; RESPONSES; TRANSMISSION; PERCEPTION; HUMANS; REFLEX; UNITS;
Keywords:
pulpal sensitivity; sensory gating; trigeminal system; jaw movement;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
26
Recensione:
Indirizzi per estratti:
Indirizzo: Kemppainen, P Univ Helsinki, Inst Dent, Dept Prosthet Dent, POB 41, FIN-00014 Helsinki, Finland Univ Helsinki POB 41 Helsinki Finland FIN-00014 ki, Finland
Citazione:
P. Kemppainen et al., "Changes in tooth pulpal detection and pain thresholds in relation to jaw movement in man", ARCH ORAL B, 46(1), 2001, pp. 33-37

Abstract

The effect of jaw movements on pulpal sensory thresholds to electrical stimulation was studied in healthy humans. The movements consisted of repeatedjaw opening and closing at two different frequencies (1 and 3 s(-1)). The detection/perception and pain thresholds of an upper or lower central incisor were determined by stimulation with monopolar constant current pulses attwo different durations (0.5 and 5.0 ms). In the absence of jaw movement, the control (baseline) pain threshold was significantly higher than the detection threshold, and both thresholds were significantly decreased with an increase of the stimulus pulse duration. During jaw movement, pulpal detection and pain thresholds were significantly elevated, independent of the duration of the stimulus pulse. The jaw movement-related increase in detectionthresholds was significantly dependent on the rate of cyclical jaw movements and on the site of stimulation. An increase in pulpal sensory thresholdswas observed with stimulation of the lower incisor only; there was no change in thresholds for the upper incisor. Pulpal detection thresholds were significantly more elevated during jaw movement than pulpal pain thresholds. The results indicate that the reduction in pulpal sensitivity is related tothe jaw movements. The effect of jaw movement on pulpal detection thresholds was segmentally restricted. In contrast, modulation of the pulpal pain thresholds was considerably weaker. The jaw movement-related suppression of pulpal sensitivity may be explained by activation of segmental afferent-induced inhibition, corollary efferent barrage from motor to sensory areas, ora combination of both. (C) 2000 Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/03/20 alle ore 19:34:00