Contribution of Periodontal Receptors to the Masseteric Silent Period

Bessette, Russell W.; Mohl, Norman D.; Bishop, Beverly

doi:10.1177/00220345740530052101

Cited by 38 publications

(22 citation statements)

References 13 publications

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“…Watt etal /• d ucing reflex changes in the elevator muscle activity following tooth contact. Bessette, Mohl & Bishop (1974) consider that the periodontal receptors provide a major source of inhibition contributing to the silent period in masseter muscles, but because of the small size of their sample (3 men) the evidence which they obtained may be insufficient to sustain their conclusion. Some believe that the Golgi organs of the tendons and ligaments are chiefly responsible for the inhibition of muscle activity and others that the muscle spindles are chiefly involved.…”

Section: Introductionmentioning

confidence: 97%

The influence of percussion, occlusion and mastication on the occurrence of silent periods in masseter muscle activity

Watt

Turnbull

Saberi

et al. 1976

J of Oral Rehabilitation

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The occurrence of silent periods in masseter muscle activity was investigated during percussion of the bony structures of the head and neck, during occlusion of the teeth on surfaces of varying hardness, and during chewing of different food-stuffs. Silent periods were demonstrated on percussion during isometric and isotonic contraction of the masseter muscles and the occurrence of silent periods was influenced by the force of occlusion and by the nature of the surface contacted. Mandibular velocity was investigated during tapping and chewing sequences by ultra-high-speed cinematography, but it was not found possible to identify a critical change in mandibular velocity associated with the occurrence of silent periods. More silent periods were observed during the chewing of hard foods than of soft foods and there were more silent periods near the beginning of chewing sequences than towards the end. Differences in latency and duration of silent periods were observed in relation to artificial changes in the occlusion.

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Section: Introductionmentioning

confidence: 97%

The influence of percussion, occlusion and mastication on the occurrence of silent periods in masseter muscle activity

Watt

Turnbull

Saberi

et al. 1976

J of Oral Rehabilitation

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“…There is evidence that the teeth and their surrounding tissues are protected from excessive forces during clenching by the inhibitory efl"ect of the periodontal receptors on the masseteric motoneurones (Bessette, Mohl & Bishop, 1974). The inhibition from periodontal receptors which may be correlated to the clenching force during biting may influence the duration of the so-called silent period (SP) (Bessette, Bishop & Mohl, 1971).…”

Section: Introductionmentioning

confidence: 99%

Maximal bite force with centric and eccentric load

Widmalm

Ericsson

1982

J of Oral Rehabilitation

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Premolar bite force was measured conventionally with a pressure transducer. During biting the tips of the buccal cusps made contact with the transducer. It was shown that the maximal bite force increased significantly if the eccentric load on the upper premolar was made centric and axial with respect to the transducer by covering the whole occlusal surface of the tooth with a plastic filling. Possible neurophysiological explanations of the difference in bite force are discussed. It is concluded that biting on a pressure transducer with an eccentric load cannot give a fair estimation of the true value of the maximal bite force during clenching in the position of intercuspidation.

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“…Mechanical stimuli activate a number of receptors that may have different synaptic connections to the motoneuronal pool of the masticatory muscles [1]. nevertheless, most likely, that the bite force reflex is regulated by a periodontal feedback to protect the masticatory system from being damaged, as it has been confirmed that PMRs significantly contribute to the inhibition of jaw-closers [1,4,8,9,12,14,17,18]. these results further highlight the importance of the RbF value for the modulation of the strength of the jaw reflex; as we found that the higher RbF values produced stronger net inhibitory reflex.…”

Section: Discussionmentioning

confidence: 99%

“…local anaesthetic blocks have been used to identify the reflex responses that originate from PMRs [4,[12][13][14]. several studies have illustrated that PMRs are responsible for the majority of the reflex responses of the human jaw muscles and that PMRs have much more powerful inhibitory effects on masseter muscles than previous suggestions [4,[12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Rapid voluntary clench induces bite force reflex in human

Uginčius

Stankevičius

Kubilius

2015

MMJ

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Objective: the purpose of this study was to test the occlusal analysis system t-scan ii for the detection of a bite force reflex and to determine the net jaw reflex modulation during a rapid voluntary clench. Materials and Methods:Eleven subjects were asked to bite as fast as possible on the pressure-sensitive sheet using occlusal scanning system t-scan ii. the bite force reflex parameters were determined from the occlusal force curve.Results:the inhibitory bite force reflex occurred in nine subjects with a latency of 34.0 ± 7.8 ms, duration of 17.0 ± 2.8 ms and strength of 1.6% ± 0.3%. a strong correlation was detected between the latency of the reflex and the time to reach 80% of the maximal relative bite force (r = 0.833; p < 0.01). a moderate correlation was found between the relative bite force at the moment of the first turning point of the reflex and the change of this force during the reflex (r = 0.677; p < 0.05).Conclusion: the reflex modulation confirms the protective role of the jaw reflex: during faster bites the latency of the bite force reflex was shorter and with a higher bite force the strength of the reflex was greater.Keywords: bite force reflex, Human, Occlusal scanning, Rapid voluntary clench, Relative bite force ÖZET Amaç: bu çalışmada, ısırma refleksi kuvvetini belirlemek için t-scan ii okluzal analiz sistemi kullanmak ve hızlı istemli diş sıkma sırasında net çene refleksindeki değişimi değerlendirmek amaçlanmıştır.Gereç ve Yöntem : Çalışmamıza, 11 gönüllü denek katılmıştır. Denekler, t-scan ii okluzal analiz isteminin basınca duyarlı ısırma sensörlerini ısırabildikleri en hızlı şekilde ısırmışlardır. Okluzal kuvvet eğrisi aracılığıyla ısırma refleks parametreleri belirlenmiştir. Bulgular: Onbir deneğin 9'unda inhibitor ısırma refleksi tespit edilmiştir. bu refleksin latans değeri 34,0±7,8 ms, süresi 17,0±2,8 ms ve kuvveti % 1,6±%0,3 olarak hesaplanmıştır. isırma refleks latansı ile maksimum nispi ısırma kuvvetinin %80'ine ulaşmak için gereken zaman arasında güçlü bir ilişki gözlenmiştir (r=0,833; p<0,01). isırma refleksinin ilk anındaki nispi ısırma kuvveti ile bu kuvvetin refleks boyunca değişimi arasındaki ilişki ise orta derecelidir ( r=0,677; p<0,05).Sonuç: isırma refleksindeki değişim, çene refleksinin koruyucu rolünü destekler. Hızlı ısırma sırasında, kısa latanslı bir ısırma refleksi oluşur. isırma kuvveti yükseldiğinde, refleksin kuvveti artar.

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Contribution of Periodontal Receptors to the Masseteric Silent Period

Cited by 38 publications

References 13 publications

The influence of percussion, occlusion and mastication on the occurrence of silent periods in masseter muscle activity

The influence of percussion, occlusion and mastication on the occurrence of silent periods in masseter muscle activity

Maximal bite force with centric and eccentric load

Rapid voluntary clench induces bite force reflex in human

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