Influence of experimental interfering occlusal contacts on the activity of the anterior temporal and masseter muscles during mastication

Riise, C; Sheikholeslam, Akbar

doi:10.1111/j.1365-2842.1984.tb00583.x

Cited by 46 publications

(21 citation statements)

References 22 publications

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“…In addition to the use of QH to produce symmetrical maxillary arch expansion until UPXB correction, treatment was continued with preadjusted fixed appliances to achieve a stable occlusion, free of occlusal interference or problems that could affect sEMG activity or mandible kinematics (Riise and Sheikholeslam, 1982;Sheikholeslam and Riise, 1983;Riise and Sheikholeslam, 1984; Table 6 Comparisons of kinematic measurements (mm) of mandibular shift, rest position, swallowing and mastication, before treatment (T0), after treatment (T1) and one year after retention (T2) (One-way ANOVA for repeated measurements except for % of swallowing and XB and NON-XB side preferences, where Cochran's Q test was used) in the cross-bite group. Baba et al, 1996;De Rossi et al, 2009).…”

Section: Discussionmentioning

confidence: 99%

Longitudinal evaluation of sEMG of masticatory muscles and kinematics of mandible changes in children treated for unilateral cross-bite

Martín

Palma

Alamán

et al. 2012

Journal of Electromyography and Kinesiology

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Section: Discussionmentioning

confidence: 99%

Longitudinal evaluation of sEMG of masticatory muscles and kinematics of mandible changes in children treated for unilateral cross-bite

Martín

Palma

Alamán

et al. 2012

Journal of Electromyography and Kinesiology

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“…An improvement of the occlusion has been shown to result in an increase of the maximal mean voltage amplitude and a decrease of the duration of the closing phase of the chewing cycle (Ingervall and Egermark-Eriksson, 1979;Bakke et al, 1982;Ingervall and Carlsson, 1982;Moller et al, 1984). The opposite effect was shown to result from the introduction of an experimental interfering occlusal contact (Riise and Sheikholeslam, 1984).…”

Section: Muscle Activity During Chewingmentioning

confidence: 94%

Function of masticatory muscles during the initial phase of activator treatment

Ingervall

Bitsanis

1986

The European Journal of Orthodontics

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SUMMARY The function of masticatory muscles and the development of the bite force were studied in 15 children before and during the first six months of the treatment of distal occlusion with an activator.Electromyographic recordings of the activity of the anterior and posterior portions of the temporal muscle, the masseter muscle and the anterior belly of the digastric muscle were made bilaterally in the rest position of the mandible and with the activator inserted. Recordings were also made during chewing and swallowing of apple and peanuts and during chewing of chewing gum as well as during maximal bite in the intercuspal position and on the activator. The mean voltage amplitude, the duration and the coordination of the activity were analysed.The maximum bite force was measured at the first molars and at the incisors. In most of the children, the clinical improvement was rapid as evident from a decrease in overjet and in the ANB angle as well as a change in the molar relation. The bite force measured at the incisors increased during the period of treatment. The muscle activity in the rest position was low and was the same with or without the activator. Thus, insertion of the activator did not increase the muscle activity. The activity of the posterior portion of the temporal muscle in the rest position was comparatively high at the start of treatment but decreased during the period of observation.The activity of the masseter and temporal muscles during maximal bite and chewing was influenced by the occlusal instability created during the course of treatment. The decrease of the postural activity of the posterior temporal muscle may reflect an adaptation to a new mandibular position.

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“…Hence, the dental profession embarked on massive occlusal equilibration looking for an ideal occlusion (18,19). However, EMG studies aiming to test this hypothesis by applying experimental interferences gave inconsistent findings (20)(21)(22)(23)(24)(25)(26)(27). Reviews on this issue have pointed out that the relationship between occlusal interferences and masticatory function is still far from being clearly understood (for a review see (28,29).…”

Section: Does Malocclusion Cause Tmd?mentioning

confidence: 99%

The role of orthodontics in temporomandibular disorders

Michelotti

Iodice

2010

Journal of Oral Rehabilitation

201

167

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Temporomandibular Disorder (TMD) is the main cause of pain of non-dental origin in the oro-facial region including head, face and related structures. The aetiology and the pathophysiology of TMD is poorly understood. It is generally accepted that the aetiology is multifactorial, involving a large number of direct and indirect causal factors. Among such factors, occlusion is frequently cited as one of the major aetiological factors causing TMD. It is well known from epidemiologic studies that TMD-related signs and symptoms, particularly temporomandibular joint (TMJ) sounds, are frequently found in children and adolescents and show increased prevalence among subjects between 15 and 45 years old. Aesthetic awareness, the development of new aesthetic orthodontic techniques and the possibility of improving prosthetic rehabilitation has increased the number of adults seeking orthodontic treatment. The shift in patient age also has increased the likelihood of patients presenting with signs and symptoms of TMD. Because orthodontic treatment lasts around 2 years, orthodontic patients may complain about TMD during or after treatment and orthodontists may be blamed for causing TMD by unsatisfied patients. This hypothesis of causality has led to legal problems for dentists and orthodontists. For these reasons, the interest in the relationship between occlusal factors, orthodontic treatment and TMD has grown and many studies have been conducted. Indeed, claims that orthodontic treatment may cause or cure TMD should be supported by good evidence. Hence, the aim of this article is to critically review evidence for a possible association between malocclusion, orthodontic treatment and TMD.

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Influence of experimental interfering occlusal contacts on the activity of the anterior temporal and masseter muscles during mastication

Cited by 46 publications

References 22 publications

Longitudinal evaluation of sEMG of masticatory muscles and kinematics of mandible changes in children treated for unilateral cross-bite

Longitudinal evaluation of sEMG of masticatory muscles and kinematics of mandible changes in children treated for unilateral cross-bite

Function of masticatory muscles during the initial phase of activator treatment

The role of orthodontics in temporomandibular disorders

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