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Article: Masticatory muscle pain before, during, and after treatment with orthopedic protraction headgear: A pilot study

TitleMasticatory muscle pain before, during, and after treatment with orthopedic protraction headgear: A pilot study
Authors
Issue Date1997
PublisherE H Angle Education and Research Foundation, Inc. The Journal's web site is located at http://www.angle.org/
Citation
Angle Orthodontist, 1997, v. 67 n. 6, p. 433-438 How to Cite?
AbstractProtraction headgear has been used in conjunction with a palatal expansion appliance to correct Class III malocclusion with maxillary deficiency and/or mandibular prognathism. In general, 800 gm of orthopedic force is used to protract the maxilla, and 75% of this force is transmitted to the temporomandibular joint (TMJ) area via the mandible. The effect of this heavy intermittent force on the TMJ has not been reported in the literature. The objectives of this study were to determine the level of masticatory muscle pain and EMG activity in patients treated with maxillary protraction headgear. Ten patients with skeletal Class III malocclusion whose treatment plan called for maxillary protraction headgear treatment participated in this study. Nocturnal masticatory muscle activity was determined using a portable electromyographic (EMG) recording device. Subjects wore the EMG device 14 nights before treatment, 14 nights during treatment, and 14 nights 1 month after active treatment. Masticatory muscle pain level was determined by muscle palpation, scored on a scale of 0 to 3 each period, according to the method of Gross and Gale. The examiner followed a sequence outlined by Burch to examine the masticatory muscles. Results showed no significant differences for masticatory muscle activities before, during, and after treatment. Only a few patients experienced level 1 masticatory pain during treatment. None of the patients experienced masticatory muscle pain 1 month after treatment. These results demonstrate no significant increase in masticatory muscle activity or muscle pain associated with orthopedic treatment using maxillary protraction headgear.
Persistent Identifierhttp://hdl.handle.net/10722/53993
ISSN
2015 Impact Factor: 1.579
2015 SCImago Journal Rankings: 1.254
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorNgan, PWen_HK
dc.contributor.authorYiu, Cen_HK
dc.contributor.authorHagg, Uen_HK
dc.contributor.authorWei, SHYen_HK
dc.contributor.authorBowley, Jen_HK
dc.date.accessioned2009-04-03T07:33:51Z-
dc.date.available2009-04-03T07:33:51Z-
dc.date.issued1997en_HK
dc.identifier.citationAngle Orthodontist, 1997, v. 67 n. 6, p. 433-438en_HK
dc.identifier.issn0003-3219en_HK
dc.identifier.urihttp://hdl.handle.net/10722/53993-
dc.description.abstractProtraction headgear has been used in conjunction with a palatal expansion appliance to correct Class III malocclusion with maxillary deficiency and/or mandibular prognathism. In general, 800 gm of orthopedic force is used to protract the maxilla, and 75% of this force is transmitted to the temporomandibular joint (TMJ) area via the mandible. The effect of this heavy intermittent force on the TMJ has not been reported in the literature. The objectives of this study were to determine the level of masticatory muscle pain and EMG activity in patients treated with maxillary protraction headgear. Ten patients with skeletal Class III malocclusion whose treatment plan called for maxillary protraction headgear treatment participated in this study. Nocturnal masticatory muscle activity was determined using a portable electromyographic (EMG) recording device. Subjects wore the EMG device 14 nights before treatment, 14 nights during treatment, and 14 nights 1 month after active treatment. Masticatory muscle pain level was determined by muscle palpation, scored on a scale of 0 to 3 each period, according to the method of Gross and Gale. The examiner followed a sequence outlined by Burch to examine the masticatory muscles. Results showed no significant differences for masticatory muscle activities before, during, and after treatment. Only a few patients experienced level 1 masticatory pain during treatment. None of the patients experienced masticatory muscle pain 1 month after treatment. These results demonstrate no significant increase in masticatory muscle activity or muscle pain associated with orthopedic treatment using maxillary protraction headgear.en_HK
dc.languageengen_HK
dc.publisherE H Angle Education and Research Foundation, Inc. The Journal's web site is located at http://www.angle.org/en_HK
dc.relation.ispartofAngle Orthodontisten_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subject.meshAdolescenten_HK
dc.subject.meshChilden_HK
dc.subject.meshElectromyographyen_HK
dc.subject.meshExtraoral Traction Appliances - adverse effectsen_HK
dc.subject.meshHumansen_HK
dc.subject.meshMalocclusion, Angle Class III - therapyen_HK
dc.subject.meshMasticatory Muscles - physiologyen_HK
dc.subject.meshPain - etiologyen_HK
dc.subject.meshPalatal Expansion Technique - instrumentationen_HK
dc.subject.meshPilot Projectsen_HK
dc.subject.meshPrognathism - therapyen_HK
dc.titleMasticatory muscle pain before, during, and after treatment with orthopedic protraction headgear: A pilot studyen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0003-3219&volume=67&issue=6&spage=433&epage=438&date=1997&atitle=Masticatory+muscle+pain+before,+during,+and+after+treatment+with+orthopedic+protraction+headgear:+a+pilot+studyen_HK
dc.identifier.emailYiu, C: ckyyiu@hkucc.hku.hken_HK
dc.identifier.emailHagg, U: euohagg@hkusua.hku.hken_HK
dc.identifier.emailWei, SHY: cdowei@hkuxa.hku.hk-
dc.identifier.authorityYiu, C=rp00018en_HK
dc.identifier.authorityHagg, U=rp00020en_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.pmid9428961en_HK
dc.identifier.scopuseid_2-s2.0-0031302425en_HK
dc.identifier.hkuros9977-
dc.identifier.hkuros29791-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0031302425&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume67en_HK
dc.identifier.issue6en_HK
dc.identifier.spage433en_HK
dc.identifier.epage438en_HK
dc.identifier.isiWOS:000071003000008-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridNgan, PW=7006250823en_HK
dc.identifier.scopusauthoridYiu, C=7007115156en_HK
dc.identifier.scopusauthoridHagg, U=7006790279en_HK
dc.identifier.scopusauthoridWei, SHY=7401765260en_HK
dc.identifier.scopusauthoridBowley, J=7003544788en_HK

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