Maximal bite force and EMG during bilateral and unilateral clenching
Identifieur interne : 008457 ( Main/Exploration ); précédent : 008456; suivant : 008458Maximal bite force and EMG during bilateral and unilateral clenching
Auteurs : A. Van Der Bilt [Pays-Bas] ; J. H. Abbink [Pays-Bas] ; F. A. Fontijn-Tekamp [Pays-Bas] ; F. Bosman [Pays-Bas]Source :
- Journal of Oral Rehabilitation [ 0305-182X ] ; 2002-09.
Descripteurs français
- Wicri :
- geographic : Pays-Bas.
English descriptors
- KwdEn :
- Academic centre, Anterior temporalis, Anticipatory activity, Apnoea, Appliance, Arbitrary moulding, Arthrogenous origin, Auscultation, Bennett movement, Bennett side shift, Bilateral, Bilateral clenching, Bilateral measurement, Blackwell, Blackwell science, Bosman department, Botulinum toxin, Bres, Bruxers, Bruxism, Bruxism time index, Central incisor, Centre, Cervical, Cervical spine, Clenching, Clinical assessment, Clinical signs, Complete dentures, Contraction episodes, Contraction time, Contralateral side, Control appliance, Control group, Corresponding amas, Craniomandibular, Craniomandibular disorders, Crown height, Daily stress, Deformation displacement, Dental research, Dentine exposure, Dentistry, Dentistry amsterdam, Denture, Diagnostic criteria, Different design, Different foods, Digastric, Disorder, Edentate people, Edentulous, Edentulous patients, Experimental muscle pain, Experimental occlusal interference, Facial pain, Flemish adolescent girls, Food resistance, Force transducer, Full dentures, Functional impression trays, Functional impressions, Glenoid fossa, Haemodynamic changes, Healthy subjects, Horizontal forces, Hospital anxiety, Hydrodynamic stimulation, Implant, Incisor, Interference period, Interobserver reliability, Interrater reliability, Item scores, Laryngeal, Laryngeal elevation, Laryngeal vibration, Lateral, Lateral pterygoid muscles, Life quality, Little modulation, Local anaesthesia, Local application, Local craniomandibular pain, Lower ridge region, Lower ridge resorption, Magnetic resonance imaging, Main complaint, Mandible, Mandibular, Mandibular contact movements, Mandibular movement, Mandibular movements, Mandibular posture, Masseter, Masseter muscle activity, Masseter muscles, Masticatory, Masticatory muscle palpation, Masticatory muscles, Masticatory performance, Masticatory system, Mcgill pain questionnaire, Molar, Mouth opening, Multiple regression analysis, Muscle activity, Myofascial pain, Myogenous, Myogenous pain, Naeije department, Narrow occlusal surface, Natural environment, Nerve responses, Netherlands, Occlusal, Occlusal anatomy, Occlusal appliance therapy, Occlusal surface, Occlusal tooth, Odds ratio, Okayama university, Oral function, Oral habits, Oral physiology, Oral rehabilitation, Other techniques, Other variables, Outcome variables, Pain intensity, Painful body areas, Palatal, Palatal appliances, Palpation, Patient group, Periodontal receptors, Personality characteristics, Physiology, Physiotherapeutic treatment modalities, Physiotherapy, Physiotherapy group, Positive effect, Posterior digastric, Posterior digastric muscle palpation, Posterior part, Posterior temporalis, Predictor variables, Premature contact, Present study, Pressure onset, Previous study, Prosthetic dentistry, Prosthodontics, Psychological characteristics, Psychological distress, Psychological factors, Psychosomatic disorders, Pulpal blood circulation, Randomized, Recent studies, Recurrent headache, Reliability, Removable prosthodontics, Replacement dentures, Ridge incisal edge, Right masseter muscle, Ring rates, Risk factors, Sagittal distance, Several types, Side mandible, Spearman correlation, Splint therapy, Stabilization appliance, Statistical analysis, Sternocleidomastoid muscles, Stimulation cavity, Stomatognathic physiology, Such treatment, Superior laryngeal nerve, Supramedullary region, Symptom, Temporal muscles, Temporalis, Temporalis muscle, Temporomandibular, Temporomandibular disorders, Temporomandibular joints, Tongue motion, Tooth plastic rims, Treatment contrast, Treatment demand, Treatment effect, Treatment group, Treatment need, Treatment outcome, Twitch force, Unilateral, Unilateral clenching, Vallon department, Vertical distance, Visual analogue scale, Visual analogue scales, Visual feedback, Younger persons.
- Teeft :
- Academic centre, Anterior temporalis, Anticipatory activity, Apnoea, Appliance, Arbitrary moulding, Arthrogenous origin, Auscultation, Bennett movement, Bennett side shift, Bilateral, Bilateral clenching, Bilateral measurement, Blackwell, Blackwell science, Bosman department, Botulinum toxin, Bres, Bruxers, Bruxism, Bruxism time index, Central incisor, Centre, Cervical, Cervical spine, Clenching, Clinical assessment, Clinical signs, Complete dentures, Contraction episodes, Contraction time, Contralateral side, Control appliance, Control group, Corresponding amas, Craniomandibular, Craniomandibular disorders, Crown height, Daily stress, Deformation displacement, Dental research, Dentine exposure, Dentistry, Dentistry amsterdam, Denture, Diagnostic criteria, Different design, Different foods, Digastric, Disorder, Edentate people, Edentulous, Edentulous patients, Experimental muscle pain, Experimental occlusal interference, Facial pain, Flemish adolescent girls, Food resistance, Force transducer, Full dentures, Functional impression trays, Functional impressions, Glenoid fossa, Haemodynamic changes, Healthy subjects, Horizontal forces, Hospital anxiety, Hydrodynamic stimulation, Implant, Incisor, Interference period, Interobserver reliability, Interrater reliability, Item scores, Laryngeal, Laryngeal elevation, Laryngeal vibration, Lateral, Lateral pterygoid muscles, Life quality, Little modulation, Local anaesthesia, Local application, Local craniomandibular pain, Lower ridge region, Lower ridge resorption, Magnetic resonance imaging, Main complaint, Mandible, Mandibular, Mandibular contact movements, Mandibular movement, Mandibular movements, Mandibular posture, Masseter, Masseter muscle activity, Masseter muscles, Masticatory, Masticatory muscle palpation, Masticatory muscles, Masticatory performance, Masticatory system, Mcgill pain questionnaire, Molar, Mouth opening, Multiple regression analysis, Muscle activity, Myofascial pain, Myogenous, Myogenous pain, Naeije department, Narrow occlusal surface, Natural environment, Nerve responses, Netherlands, Occlusal, Occlusal anatomy, Occlusal appliance therapy, Occlusal surface, Occlusal tooth, Odds ratio, Okayama university, Oral function, Oral habits, Oral physiology, Oral rehabilitation, Other techniques, Other variables, Outcome variables, Pain intensity, Painful body areas, Palatal, Palatal appliances, Palpation, Patient group, Periodontal receptors, Personality characteristics, Physiology, Physiotherapeutic treatment modalities, Physiotherapy, Physiotherapy group, Positive effect, Posterior digastric, Posterior digastric muscle palpation, Posterior part, Posterior temporalis, Predictor variables, Premature contact, Present study, Pressure onset, Previous study, Prosthetic dentistry, Prosthodontics, Psychological characteristics, Psychological distress, Psychological factors, Psychosomatic disorders, Pulpal blood circulation, Randomized, Recent studies, Recurrent headache, Reliability, Removable prosthodontics, Replacement dentures, Ridge incisal edge, Right masseter muscle, Ring rates, Risk factors, Sagittal distance, Several types, Side mandible, Spearman correlation, Splint therapy, Stabilization appliance, Statistical analysis, Sternocleidomastoid muscles, Stimulation cavity, Stomatognathic physiology, Such treatment, Superior laryngeal nerve, Supramedullary region, Symptom, Temporal muscles, Temporalis, Temporalis muscle, Temporomandibular, Temporomandibular disorders, Temporomandibular joints, Tongue motion, Tooth plastic rims, Treatment contrast, Treatment demand, Treatment effect, Treatment group, Treatment need, Treatment outcome, Twitch force, Unilateral, Unilateral clenching, Vallon department, Vertical distance, Visual analogue scale, Visual analogue scales, Visual feedback, Younger persons.
Abstract
The observed maximal bite force is known to depend on the measuring method employed. Bite position, bite rise and unilateral or bilateral biting influence the observed bite force. The maximal bite force obtained when clenching unilaterally is smaller than the bite force summed for the two sides of a bilateral measurement (Bakke et al., 1989). We determined bite force and muscle activity of the masseter and temporal muscles during maximal voluntary contraction in a group of 81 dentate subjects. The bite force was measured between the first molars both bilaterally and unilaterally. The summed bite force obtained from the bilateral measurement was 569 ± 170 N. The bite force obtained for unilateral clenching was significantly lower: 430 ± 142 N. No significant differences in bite force between the right and left side for both the bilateral and unilateral measurements were observed. The muscle activity of the masseter and temporal muscles obtained from bilateral clenching did not differ significantly (masseter: 248 ± 149 μV and temporalis: 232 ± 105 μV). Also no significant differences were observed in muscle activity between the right and left side during bilateral clenching. We observed a significantly lower muscle activity in both masseter and temporalis for unilateral clenching as compared with bilateral clenching. The results of unilateral clenching showed no differences in muscle activity between the ipsi‐ and contralateral side for the masseter muscle (186 ± 127 μV). However, the muscle activity at the ipsilateral side of the temporal muscle (197 ± 127 μV) was significantly higher than at the contralateral side (150 ± 81 μV). We may conclude that bilateral clenching yields bite forces that are over 30% larger than those obtained during unilateral clenching. The muscle activity during unilateral clenching is symmetrical in the masseter muscles, but asymmetrical in the temporal muscles.
Url:
DOI: 10.1046/j.1365-2842.2002.01026_18.x
Affiliations:
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Bosman</name></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:F4B4E5AA8CFA65F5A9210B353CC6D5FA29EED3B3</idno><date when="2002" year="2002">2002</date><idno type="doi">10.1046/j.1365-2842.2002.01026_18.x</idno><idno type="url">https://api.istex.fr/document/F4B4E5AA8CFA65F5A9210B353CC6D5FA29EED3B3/fulltext/pdf</idno><idno type="wicri:Area/Istex/Corpus">007921</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Corpus" wicri:corpus="ISTEX">007921</idno><idno type="wicri:Area/Istex/Curation">007921</idno><idno type="wicri:Area/Istex/Checkpoint">003850</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Checkpoint">003850</idno><idno type="wicri:doubleKey">0305-182X:2002:Van Der Bilt A:maximal:bite:force</idno><idno type="wicri:Area/Main/Merge">008734</idno><idno type="wicri:Area/Main/Curation">008457</idno><idno type="wicri:Area/Main/Exploration">008457</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a" type="main">Maximal bite force and EMG during bilateral and unilateral clenching</title><author><name sortKey="Van Der Bilt, A" sort="Van Der Bilt, A" uniqKey="Van Der Bilt A" first="A." last="Van Der Bilt">A. Van Der Bilt</name><affiliation wicri:level="3"><country xml:lang="fr" wicri:curation="lc">Pays-Bas</country><wicri:regionArea>Department of Oral‐Maxillofacial Surgery, Prosthodontics and Special Dental Care, University Medical Center, Utrecht</wicri:regionArea><placeName><settlement type="city">Utrecht</settlement><region nuts="2" type="province">Utrecht (province)</region></placeName></affiliation></author><author><name sortKey="Abbink, J H" sort="Abbink, J H" uniqKey="Abbink J" first="J. H." last="Abbink">J. H. Abbink</name><affiliation wicri:level="3"><country xml:lang="fr" wicri:curation="lc">Pays-Bas</country><wicri:regionArea>Department of Oral‐Maxillofacial Surgery, Prosthodontics and Special Dental Care, University Medical Center, Utrecht</wicri:regionArea><placeName><settlement type="city">Utrecht</settlement><region nuts="2" type="province">Utrecht (province)</region></placeName></affiliation></author><author><name sortKey="Fontijn Ekamp, F A" sort="Fontijn Ekamp, F A" uniqKey="Fontijn Ekamp F" first="F. A." last="Fontijn-Tekamp">F. A. Fontijn-Tekamp</name><affiliation wicri:level="3"><country xml:lang="fr" wicri:curation="lc">Pays-Bas</country><wicri:regionArea>Department of Oral‐Maxillofacial Surgery, Prosthodontics and Special Dental Care, University Medical Center, Utrecht</wicri:regionArea><placeName><settlement type="city">Utrecht</settlement><region nuts="2" type="province">Utrecht (province)</region></placeName></affiliation></author><author><name sortKey="Bosman, F" sort="Bosman, F" uniqKey="Bosman F" first="F." last="Bosman">F. Bosman</name><affiliation wicri:level="3"><country xml:lang="fr" wicri:curation="lc">Pays-Bas</country><wicri:regionArea>Department of Oral‐Maxillofacial Surgery, Prosthodontics and Special Dental Care, University Medical Center, Utrecht</wicri:regionArea><placeName><settlement type="city">Utrecht</settlement><region nuts="2" type="province">Utrecht (province)</region></placeName></affiliation></author></analytic><monogr></monogr><series><title level="j" type="main">Journal of Oral Rehabilitation</title><title level="j" type="alt">JOURNAL ORAL REHABILITATION</title><idno type="ISSN">0305-182X</idno><idno type="eISSN">1365-2842</idno><imprint><biblScope unit="vol">29</biblScope><biblScope unit="issue">9</biblScope><biblScope unit="page" from="878">878</biblScope><biblScope unit="page" to="879">879</biblScope><biblScope unit="page-count">2</biblScope><publisher>Blackwell Science Ltd</publisher><pubPlace>Oxford, UK</pubPlace><date type="published" when="2002-09">2002-09</date></imprint><idno type="ISSN">0305-182X</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0305-182X</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Academic centre</term><term>Anterior temporalis</term><term>Anticipatory activity</term><term>Apnoea</term><term>Appliance</term><term>Arbitrary moulding</term><term>Arthrogenous origin</term><term>Auscultation</term><term>Bennett movement</term><term>Bennett side shift</term><term>Bilateral</term><term>Bilateral clenching</term><term>Bilateral measurement</term><term>Blackwell</term><term>Blackwell science</term><term>Bosman department</term><term>Botulinum toxin</term><term>Bres</term><term>Bruxers</term><term>Bruxism</term><term>Bruxism time index</term><term>Central incisor</term><term>Centre</term><term>Cervical</term><term>Cervical spine</term><term>Clenching</term><term>Clinical assessment</term><term>Clinical signs</term><term>Complete dentures</term><term>Contraction episodes</term><term>Contraction time</term><term>Contralateral side</term><term>Control appliance</term><term>Control group</term><term>Corresponding amas</term><term>Craniomandibular</term><term>Craniomandibular disorders</term><term>Crown height</term><term>Daily stress</term><term>Deformation displacement</term><term>Dental research</term><term>Dentine exposure</term><term>Dentistry</term><term>Dentistry amsterdam</term><term>Denture</term><term>Diagnostic criteria</term><term>Different design</term><term>Different foods</term><term>Digastric</term><term>Disorder</term><term>Edentate people</term><term>Edentulous</term><term>Edentulous patients</term><term>Experimental muscle pain</term><term>Experimental occlusal interference</term><term>Facial pain</term><term>Flemish adolescent girls</term><term>Food resistance</term><term>Force transducer</term><term>Full dentures</term><term>Functional impression trays</term><term>Functional impressions</term><term>Glenoid fossa</term><term>Haemodynamic changes</term><term>Healthy subjects</term><term>Horizontal forces</term><term>Hospital anxiety</term><term>Hydrodynamic stimulation</term><term>Implant</term><term>Incisor</term><term>Interference period</term><term>Interobserver reliability</term><term>Interrater reliability</term><term>Item scores</term><term>Laryngeal</term><term>Laryngeal elevation</term><term>Laryngeal vibration</term><term>Lateral</term><term>Lateral pterygoid muscles</term><term>Life quality</term><term>Little modulation</term><term>Local anaesthesia</term><term>Local application</term><term>Local craniomandibular pain</term><term>Lower ridge region</term><term>Lower ridge resorption</term><term>Magnetic resonance imaging</term><term>Main complaint</term><term>Mandible</term><term>Mandibular</term><term>Mandibular contact movements</term><term>Mandibular movement</term><term>Mandibular movements</term><term>Mandibular posture</term><term>Masseter</term><term>Masseter muscle activity</term><term>Masseter muscles</term><term>Masticatory</term><term>Masticatory muscle palpation</term><term>Masticatory muscles</term><term>Masticatory performance</term><term>Masticatory system</term><term>Mcgill pain questionnaire</term><term>Molar</term><term>Mouth opening</term><term>Multiple regression analysis</term><term>Muscle activity</term><term>Myofascial pain</term><term>Myogenous</term><term>Myogenous pain</term><term>Naeije department</term><term>Narrow occlusal surface</term><term>Natural environment</term><term>Nerve responses</term><term>Netherlands</term><term>Occlusal</term><term>Occlusal anatomy</term><term>Occlusal appliance therapy</term><term>Occlusal surface</term><term>Occlusal tooth</term><term>Odds ratio</term><term>Okayama university</term><term>Oral function</term><term>Oral habits</term><term>Oral physiology</term><term>Oral rehabilitation</term><term>Other techniques</term><term>Other variables</term><term>Outcome variables</term><term>Pain intensity</term><term>Painful body areas</term><term>Palatal</term><term>Palatal appliances</term><term>Palpation</term><term>Patient group</term><term>Periodontal receptors</term><term>Personality characteristics</term><term>Physiology</term><term>Physiotherapeutic treatment modalities</term><term>Physiotherapy</term><term>Physiotherapy group</term><term>Positive effect</term><term>Posterior digastric</term><term>Posterior digastric muscle palpation</term><term>Posterior part</term><term>Posterior temporalis</term><term>Predictor variables</term><term>Premature contact</term><term>Present study</term><term>Pressure onset</term><term>Previous study</term><term>Prosthetic dentistry</term><term>Prosthodontics</term><term>Psychological characteristics</term><term>Psychological distress</term><term>Psychological factors</term><term>Psychosomatic disorders</term><term>Pulpal blood circulation</term><term>Randomized</term><term>Recent studies</term><term>Recurrent headache</term><term>Reliability</term><term>Removable prosthodontics</term><term>Replacement dentures</term><term>Ridge incisal edge</term><term>Right masseter muscle</term><term>Ring rates</term><term>Risk factors</term><term>Sagittal distance</term><term>Several types</term><term>Side mandible</term><term>Spearman correlation</term><term>Splint therapy</term><term>Stabilization appliance</term><term>Statistical analysis</term><term>Sternocleidomastoid muscles</term><term>Stimulation cavity</term><term>Stomatognathic physiology</term><term>Such treatment</term><term>Superior laryngeal nerve</term><term>Supramedullary region</term><term>Symptom</term><term>Temporal muscles</term><term>Temporalis</term><term>Temporalis muscle</term><term>Temporomandibular</term><term>Temporomandibular disorders</term><term>Temporomandibular joints</term><term>Tongue motion</term><term>Tooth plastic rims</term><term>Treatment contrast</term><term>Treatment demand</term><term>Treatment effect</term><term>Treatment group</term><term>Treatment need</term><term>Treatment outcome</term><term>Twitch force</term><term>Unilateral</term><term>Unilateral clenching</term><term>Vallon department</term><term>Vertical distance</term><term>Visual analogue scale</term><term>Visual analogue scales</term><term>Visual feedback</term><term>Younger persons</term></keywords><keywords scheme="Teeft" xml:lang="en"><term>Academic centre</term><term>Anterior temporalis</term><term>Anticipatory activity</term><term>Apnoea</term><term>Appliance</term><term>Arbitrary moulding</term><term>Arthrogenous origin</term><term>Auscultation</term><term>Bennett movement</term><term>Bennett side shift</term><term>Bilateral</term><term>Bilateral clenching</term><term>Bilateral measurement</term><term>Blackwell</term><term>Blackwell science</term><term>Bosman department</term><term>Botulinum toxin</term><term>Bres</term><term>Bruxers</term><term>Bruxism</term><term>Bruxism time index</term><term>Central incisor</term><term>Centre</term><term>Cervical</term><term>Cervical spine</term><term>Clenching</term><term>Clinical assessment</term><term>Clinical signs</term><term>Complete dentures</term><term>Contraction episodes</term><term>Contraction time</term><term>Contralateral side</term><term>Control appliance</term><term>Control group</term><term>Corresponding amas</term><term>Craniomandibular</term><term>Craniomandibular disorders</term><term>Crown height</term><term>Daily stress</term><term>Deformation displacement</term><term>Dental research</term><term>Dentine exposure</term><term>Dentistry</term><term>Dentistry amsterdam</term><term>Denture</term><term>Diagnostic criteria</term><term>Different design</term><term>Different foods</term><term>Digastric</term><term>Disorder</term><term>Edentate people</term><term>Edentulous</term><term>Edentulous patients</term><term>Experimental muscle pain</term><term>Experimental occlusal interference</term><term>Facial pain</term><term>Flemish adolescent girls</term><term>Food resistance</term><term>Force transducer</term><term>Full dentures</term><term>Functional impression trays</term><term>Functional impressions</term><term>Glenoid fossa</term><term>Haemodynamic changes</term><term>Healthy subjects</term><term>Horizontal forces</term><term>Hospital anxiety</term><term>Hydrodynamic stimulation</term><term>Implant</term><term>Incisor</term><term>Interference period</term><term>Interobserver reliability</term><term>Interrater reliability</term><term>Item scores</term><term>Laryngeal</term><term>Laryngeal elevation</term><term>Laryngeal vibration</term><term>Lateral</term><term>Lateral pterygoid muscles</term><term>Life quality</term><term>Little modulation</term><term>Local anaesthesia</term><term>Local application</term><term>Local craniomandibular pain</term><term>Lower ridge region</term><term>Lower ridge resorption</term><term>Magnetic resonance imaging</term><term>Main complaint</term><term>Mandible</term><term>Mandibular</term><term>Mandibular contact movements</term><term>Mandibular movement</term><term>Mandibular movements</term><term>Mandibular posture</term><term>Masseter</term><term>Masseter muscle activity</term><term>Masseter muscles</term><term>Masticatory</term><term>Masticatory muscle palpation</term><term>Masticatory muscles</term><term>Masticatory performance</term><term>Masticatory system</term><term>Mcgill pain questionnaire</term><term>Molar</term><term>Mouth opening</term><term>Multiple regression analysis</term><term>Muscle activity</term><term>Myofascial pain</term><term>Myogenous</term><term>Myogenous pain</term><term>Naeije department</term><term>Narrow occlusal surface</term><term>Natural environment</term><term>Nerve responses</term><term>Netherlands</term><term>Occlusal</term><term>Occlusal anatomy</term><term>Occlusal appliance therapy</term><term>Occlusal surface</term><term>Occlusal tooth</term><term>Odds ratio</term><term>Okayama university</term><term>Oral function</term><term>Oral habits</term><term>Oral physiology</term><term>Oral rehabilitation</term><term>Other techniques</term><term>Other variables</term><term>Outcome variables</term><term>Pain intensity</term><term>Painful body areas</term><term>Palatal</term><term>Palatal appliances</term><term>Palpation</term><term>Patient group</term><term>Periodontal receptors</term><term>Personality characteristics</term><term>Physiology</term><term>Physiotherapeutic treatment modalities</term><term>Physiotherapy</term><term>Physiotherapy group</term><term>Positive effect</term><term>Posterior digastric</term><term>Posterior digastric muscle palpation</term><term>Posterior part</term><term>Posterior temporalis</term><term>Predictor variables</term><term>Premature contact</term><term>Present study</term><term>Pressure onset</term><term>Previous study</term><term>Prosthetic dentistry</term><term>Prosthodontics</term><term>Psychological characteristics</term><term>Psychological distress</term><term>Psychological factors</term><term>Psychosomatic disorders</term><term>Pulpal blood circulation</term><term>Randomized</term><term>Recent studies</term><term>Recurrent headache</term><term>Reliability</term><term>Removable prosthodontics</term><term>Replacement dentures</term><term>Ridge incisal edge</term><term>Right masseter muscle</term><term>Ring rates</term><term>Risk factors</term><term>Sagittal distance</term><term>Several types</term><term>Side mandible</term><term>Spearman correlation</term><term>Splint therapy</term><term>Stabilization appliance</term><term>Statistical analysis</term><term>Sternocleidomastoid muscles</term><term>Stimulation cavity</term><term>Stomatognathic physiology</term><term>Such treatment</term><term>Superior laryngeal nerve</term><term>Supramedullary region</term><term>Symptom</term><term>Temporal muscles</term><term>Temporalis</term><term>Temporalis muscle</term><term>Temporomandibular</term><term>Temporomandibular disorders</term><term>Temporomandibular joints</term><term>Tongue motion</term><term>Tooth plastic rims</term><term>Treatment contrast</term><term>Treatment demand</term><term>Treatment effect</term><term>Treatment group</term><term>Treatment need</term><term>Treatment outcome</term><term>Twitch force</term><term>Unilateral</term><term>Unilateral clenching</term><term>Vallon department</term><term>Vertical distance</term><term>Visual analogue scale</term><term>Visual analogue scales</term><term>Visual feedback</term><term>Younger persons</term></keywords><keywords scheme="Wicri" type="geographic" xml:lang="fr"><term>Pays-Bas</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The observed maximal bite force is known to depend on the measuring method employed. Bite position, bite rise and unilateral or bilateral biting influence the observed bite force. The maximal bite force obtained when clenching unilaterally is smaller than the bite force summed for the two sides of a bilateral measurement (Bakke et al., 1989). We determined bite force and muscle activity of the masseter and temporal muscles during maximal voluntary contraction in a group of 81 dentate subjects. The bite force was measured between the first molars both bilaterally and unilaterally. The summed bite force obtained from the bilateral measurement was 569 ± 170 N. The bite force obtained for unilateral clenching was significantly lower: 430 ± 142 N. No significant differences in bite force between the right and left side for both the bilateral and unilateral measurements were observed. The muscle activity of the masseter and temporal muscles obtained from bilateral clenching did not differ significantly (masseter: 248 ± 149 μV and temporalis: 232 ± 105 μV). Also no significant differences were observed in muscle activity between the right and left side during bilateral clenching. We observed a significantly lower muscle activity in both masseter and temporalis for unilateral clenching as compared with bilateral clenching. The results of unilateral clenching showed no differences in muscle activity between the ipsi‐ and contralateral side for the masseter muscle (186 ± 127 μV). However, the muscle activity at the ipsilateral side of the temporal muscle (197 ± 127 μV) was significantly higher than at the contralateral side (150 ± 81 μV). We may conclude that bilateral clenching yields bite forces that are over 30% larger than those obtained during unilateral clenching. The muscle activity during unilateral clenching is symmetrical in the masseter muscles, but asymmetrical in the temporal muscles.</div></front></TEI><affiliations><list><country><li>Pays-Bas</li></country><region><li>Utrecht (province)</li></region><settlement><li>Utrecht</li></settlement></list><tree><country name="Pays-Bas"><region name="Utrecht (province)"><name sortKey="Van Der Bilt, A" sort="Van Der Bilt, A" uniqKey="Van Der Bilt A" first="A." last="Van Der Bilt">A. Van Der Bilt</name></region><name sortKey="Abbink, J H" sort="Abbink, J H" uniqKey="Abbink J" first="J. H." last="Abbink">J. H. Abbink</name><name sortKey="Bosman, F" sort="Bosman, F" uniqKey="Bosman F" first="F." last="Bosman">F. Bosman</name><name sortKey="Fontijn Ekamp, F A" sort="Fontijn Ekamp, F A" uniqKey="Fontijn Ekamp F" first="F. A." last="Fontijn-Tekamp">F. A. Fontijn-Tekamp</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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