Functional and Histologic Assessment of the Sensory Innervation of the Periodontal Ligament of the Cat

Kizior, Joseph E.; Cuozzo, John W.; Bowman, Douglas C.

doi:10.1177/00220345680470012801

Cited by 49 publications

(19 citation statements)

References 5 publications

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“…Unfortunately, this is rarely the case. In the cat Sakada & Kamio (1970) found fibre diameters of the IAN to be bimodally distributed between 1 and 14,um with peaks at 2-4 ,sm and 8-9,um, in agreement with previous studies by Kizior, Cuozzo & Bowman (1968) and Brashear (1936). In the dog, De Lange, Hannam & Matthews (1969) reported similar fibre diameter ranges and bimodal distribution in mental branches, but unimodal in canine and incisor branches.…”

Section: Discussionsupporting

confidence: 80%

The role of periodontal receptors in the jaw‐opening reflex in the cat.

Dessem

Iyadurai

Taylor

1988

The Journal of Physiology

130

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1. In anaesthetized cats, graded electrical stimulation of the inferior alveolar nerve at just above threshold for the largest afferent fibres caused inhibition of jaw‐closer motoneurones. Stimulus strength had to be increased to 1.5 times threshold with double shocks to cause reflex contraction of the digastric muscle. 2. Inhibition of jaw‐closer muscles and excitation of digastric muscle resulted from transients of force applied to the upper canine tooth. However, the threshold for the digastric response was approximately 11 times higher than that of the periodontal afferent units recorded in the mesencephalic nucleus of the fifth nerve (MesV). Vibration of the upper canine at 50 Hz, with amplitude adequate to excite periodontal afferents, caused no digastric contraction. 3. Stimulation in the caudal part of the MesV so as to excite periodontal afferents caused no digastric reflex, provided that the stimulus did not spread to other parts of the fifth nerve nuclei. 4. It is concluded that under these conditions the low‐threshold periodontal mechanoreceptors cause inhibition of jaw‐closer muscles, but no significant excitation of jaw‐opener muscles. 5. These findings are discussed from the point of view of the control which periodontal mechanoreceptors may exert over the biting force during mastication.

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Section: Discussionsupporting

confidence: 80%

The role of periodontal receptors in the jaw‐opening reflex in the cat.

Dessem

Iyadurai

Taylor

1988

The Journal of Physiology

130

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“…There is also good evidence that periodofital mechanoreceptors are involved in reflex jaw opening and closing in man and animals (Matthews, 1975). Activity of receptors that respond to forces applied to the teeth and their supporting structures has been reported by many workers in a variety of species: man (Johansson & Olsson, 1976); cat (Pfaffmann, 1939a, b;Yamada, Sakada, Murata & Ueyama, 1961;Suzuki, 1963;Kawamura, Nishiyama, Funakoshi & Majima, 1965;Kizior, Cuozzo & Bowman, 1968;Sakada & Kamio, 1970, 1971Hilton, 1972;Sakada & Onodera, 1974;Hannam & Farnsworth, 1977; Linden, 1978;Cash & Linden, 1982); rabbit (Ness, 1954) and dog (Wagers & Smith, 1960;Matthews, 1965;Hannam, 1968aHannam, , b, 1969a.…”

Section: Introductionmentioning

confidence: 93%

“…In those studies where compound action potentials have been recorded from whole nerves from teeth, and where the teeth have been pushed from multiple directions, the size of the compound action potential has always been identical for pushes in all directions round the tooth at right angles to the axis of the tooth (Pfaffmann, 1939a;Ness, 1954;Kizior et al 1968). This would suggest that the periodontal mechanoreceptors are situated evenly around the roots of the teeth.…”

Section: Area Ofcompression -Fulcrummentioning

confidence: 99%

The distribution of mechanoreceptors in the periodontal ligament of the mandibular canine tooth of the cat.

Cash¹,

Rj²

1982

The Journal of Physiology

102

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1. Periodontal mechanoreceptor activity has been recorded from fibres in the inferior alveolar nerve. 2. A method has been developed for punctate and electrical stimulation of the periodontal ligament mechanoreceptors through a thin layer of bone overlying the labial aspect of the left mandibular canine tooth root. 3. The distribution of periodontal mechanoreceptors in the labial aspect of the left mandibular canine tooth has been described. 4. All receptors located responded maximally when that part of the ligament in which they lay was in tension. 5. It is suggested that there may be only one type of mechanoreceptor and that the rate of adaptation is dependent on the location of the receptor within the periodontal tissues.

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“…One is the thick nerve fiber which responds to tactile stimuli and pressure; the other is the thin fiber which responds to stimuli causing pain (KANNO, 1970). On the other hand, histological studies on the nerves in the periodontium have been made in several different animals by KOLMER (1925), SPRENKEL (1936), BRADLAW (1936), LEWINSKY andSTEWART (1937), OKABE (1940), BERNICK (1952BERNICK ( , 1956BERNICK ( , 1957BERNICK ( , 1966, TOKUMITSU (1956), HATTYASY (1959) and KIJIOR, CUOZZO and BOWMAN (1968). Especially in human teeth, they were partly investigated by DEPENDORF (1913), SPRENKEL (1935), BRADLAW (1939), LEWINSKY andSTEWART (1936), YAMAZAKI (1948), HELD and BAUD (1955), RAPP, KIRSTINE and AVERY (1957), BERNICK (1957), FALIN (1958), FEARNHEAD (1963) and KADANOFF (1967 Fifty incisors and molars from three adult monkeys, Macaca irus, were used in this study.…”

Section: Discussionmentioning

confidence: 99%

“…Three or four of these networks are generally shown in the apical area. and STEWART, 1936;OKABE, 1940;BERNICK, 1952;HELD and BAUD, 1955;RAPP, KIRSTINE and AVERY, 1957;KADANOFF, 1967;KIJIOR, CUOZZO and BOWMAN, 1968).…”

mentioning

confidence: 99%