摘要
本研究的目的在于探讨过度张口对颞下颌关节（ｔｅｍｐｏｒｏｍａｎｄｉｂｕｌａｒｊｏｉｎｔ，ＴＭＪ）和咀嚼肌的影响及其致病性。实验采用开口器造成小型猪的过度张口，首次建立了过度张口的动物模型并对其ＴＭＪ和咀嚼肌进行了组织病理学观察和研究。结果显示，过度张口可导致ＴＭＪ和咀嚼肌的损伤、增生、萎缩及退行性变且随过度张口次数和时间的增加而渐重。其中以髁突关节软骨，关节盘前后带及前伸部，翼外肌和颞肌较显著。本实验结果说明过度张口为颅颌紊乱症的致病因素之一。
Thepurposeofthisstudyistoexploretheefectsandthepathogenicityofoverex-tendedmouthopeningonthetemporomandibularjoint(TMJ)andthemasticatorymuscles.Inthisexperiment,theanimalmodelofoverextendedopeningwas,establishedbyoverlyopeningtheminia-turepigs′mouthsforcertainperiodswithmouthgag,andthentheTMJandthemasticatorymuscleswerestudiedhistopathologicaly.TheresultsshowedthatthehistosytesoftheTMJandthemastica-torymuscleshadsufferedinjury,proliferation,atrophyanddegenerationfromtheoverextendedopening,andtheextentsofdeteriorationbecamegreaterwiththeincreaseoffrequencyanddurationofoverextendedopening.Amongtheinjuredtissues,thecartilageofthecondyle,theposteriorandanteriorportionsofthearticulardisc,theanteriorextentingtissueofthedisc,thelateralperygoidmusclesandthetemporalisesunderwentthemostobvioushistopathologicalchanges.TheresultofthisstudyconfirmsthatoverextendedmouthopeningisoneofthepathogenicfactorsofCMD,andithasgreatsignificancefortheclinicaldiagnosis,treatmentandpreventionforCMD.
出处
《中华口腔医学杂志》
CAS
CSCD
北大核心
1996年第5期274-277,共4页
Chinese Journal of Stomatology
关键词
颞下颌关节
咀嚼肌
过度张口
病理学
TemporomandibularjointMasticatorymusclesOverextendedmouthopen-ing
