Naslov
Clinical significance of periodontaly evoked silent period

Autori
Čelebić, Asja ; Valentić-Peruzović, Melita ; Vojvodić, Denis ; Ćatović, Adnan ; Cifrek, Mario ; Magjarević, Ratko

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Journal of Dental Research / - , 1997, 1124-1124

Skup
IADR - 3rd Continental European Division & Scandinavian Association for Dental Research Joint Meeting 1996

Mjesto i datum
Berlin, Njemačka, 12.09.1996. - 15.09.1996

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
silent period, normal occlusion, artificial occlusal interference, open-close-clench cycle

Sažetak
Silent period (SP) is an inhibitory reflex which can be elicited by stimulation of various receptors in oral and perioral cavity. It was tought that SP elicited by menton tap is prolonged in myofascial pain syndrom (MPS), but recent studies have proved that the force of the stimulus, a level of periousmuscle activity and the reticular formation excitement change the SP duration, not the MPS. The present study was made with the idea that occlusal interference changes the duration of periodontaly evoked SP. Thirty- five healthy individuals with normal occlusion and all the teeth participated in the study. Simultaneous EMG (from both temporal and masseter muscles) and audio registration (microphones attached over the zygomatic bone) were made by the EMGA-1 device during 10 open-close-clench cycles. SP-s so obtained were single and short duration (19-20 ms) in all muscles. In an experimental procedure artificial occlusal interference of self-curing acrylic resin was applied on the lower first premolar. Different silent period emerged: single prolonged, double and triple SPs or SPs with relative inhibition of motoneurons. In cases of more than one SP, complete duration of silent period complex was measured (CDSPC) which was approx. 60 ms and was significantly longer than normal SP (p<0.01). On the basis of the obtained results it was concluded that the shape and the duration of silent period could be used in clinical practice for the diagnosis of occlusal interference (not the diagnosis of MPD syndrom, as suggested previously).

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika, Dentalna medicina

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