_nine颞下颌关节疾病课件

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1、UnitNineDiseasesoftheTemporo-mandibularJointThecommondiseasesofthetemporo-mandibularjointaresubluxation,dislocationandankylosis.Theinfectionofthisjointisrare.Subluxation半脱位Dislocation脱位Ankylosis关节强直Subluxation.Subluxationreferstoaselfreducingderangementbetweenthecomponentsofajoint.Self

2、reduce自行使复位Derangement紊乱Whenreferringtothetemporo-mandibularjoint,thetermfrequentlyisusedtodescriblethesituationwhenthecondylemovesanteriortothearticulareminenceduringopeningexcursion.Themainsymptomsarecrackle,painandlimitationofjaw.Thetreatmentisverycomplex.Condyle髁状突Articular关节的Emine

3、nce隆凸,隆起Excursion移动Crackle弹响Dislocationofthetemporo-mandibularjoint.Thetemporo-mandibularjointmaybecomedislocatedasaresultofexternaltrauma,suddenorprolongedwideopening.Trauma创伤Predisposingtodislocationisusuallyextremecapsularlaxity,suchasthatassociatedwithchronicsubluxation,awideopenin

4、gcanpullthecondyleoverforwardtobecomelocatedinfrontofthearticulareminence,andthenitcannotreturntotheglenoidfossa.Predispose使易罹患Laxity松驰Glenoid关节窝的Ankylosisofthetemporo-mandibularjoint.Ankylosiscanbedividedintotwocategories:falseankylosisandtrueankylosis.Falseankylosis:Falseankylosismay

5、beduetotrauma,suchasgunshotwounds,withorwithoutinvolvementofjawbone,inhealingofwhichtherehasbeenconsiderableformationofscartissueeitherinthemuscleorinthesofttissuesanywherebetweentheupperandlowerjaws.Scartissu瘢痕组织Inflammationinthisareamaybefollowedbyorganizationofexudateandformationoff

6、ibroustissue.Falseankylosismaybeduetoscarsfollowingextensiveintraoralulceration,Exudate渗出物Ulceration溃疡theresultofnoma,scarletfeverorotheracuteexanthemas.Itisfrequentlyseenaftertreatmentofmalignantgrowthofthemouthbycautery,X-myandradium.Noma坏疽性口炎Scarletfever猩红热Exanthemas疹Cautery烧灼术Infal

7、seankylosis,therestillnearlyalwaysbesomemovementpresent.Thecauseofthelimitationwillusuallybeevidentonexamination.Theamountofresistanceencounteredtoattempttoseparatethejawsshouldbetestedbymeansofwedgemouthgaginsertedbetweentheteeth.Bymeansof藉Wedge楔Mouthgag开口器Inmildcases,thisre-sistanc