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Click to edit Master title style,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,*,Biomechanics of TMJ,Tongji University,.,Biomechanics of TMJ.,1,Anatomy of TMJ,Mandibular condyle,Joint surface of temporal bone,Articular disc,TMJ capsule,TMJ ligament,.,Anatomy of TMJMandibular condy,2,Anatomy of TMJ,Mandibular condyle,Joint surface of temporal bone,Articular disc,TMJ capsule,TMJ ligament,.,Anatomy of TMJMandibular condy,3,Muscle tissue related to TMJ,Lateral pterygoid muscle,Upper side&lower side,Function,HEAVY LOAD BUT HYPOPLASIA,.,Muscle tissue related to TMJLa,4,BIOMECHANICS OF TMJ,.,BIOMECHANICS OF TMJ.,5,BIOMECHANICS OF TMJ,What is biomechanics,Concepts:viscoelastic body;,relaxation;creep,Mechanical property of collagen&elastic fiber,.,BIOMECHANICS OF TMJWhat is bio,6,concept,creep,relaxation,.,conceptcreeprelaxation.,7,FUNCTION MOVEMENT&BIOMECHANICS OF TMJ,Opening and holding,Important balance:,Upper side of lateral pterygoid&upper fiber of bilaminar zone,Movement mechanism of joint disc:,Shape of disc&Pressure in joint,.,FUNCTION MOVEMENT&BIOMECHANI,8,FUNCTIONAL MOVEMENT AND BIOMECHANICS OF TMJ,Opening and holding,Normal,：,anterior bevel of condyle,&,intermediate of disc,&,posterior bevel of joint node one plane,Opening,Holding,Rest position,.,FUNCTIONAL MOVEMENT AND BIOMEC,9,FUNCTIONAL MOVEMENT AND BIOMECHANICS OF TMJ,Chewing process,Movement mechanism of joint disc:Shape of disc&Pressure in joint,Working side,Balance side,Balance side,Working side,.,FUNCTIONAL MOVEMENT AND BIOMEC,10,BIOMECHANICS OF CARTILAGE IN TMJ,.,BIOMECHANICS OF CARTILAGE IN,11,BIOMECHANICS OF CARTILAGE IN TMJ,Structure of cartilage,Cartilage basement,Cartilage cell,：,0.01-0.1,H,2,O,Collagen,：,Protein polysaccharide,：,Structural glycoprotein,.,BIOMECHANICS OF CARTILAGE IN T,12,Articular cartilage,viscoelastical two phase mixture,Theory of solid,liquid phase porous viscoelastic body,Unload,BIOMECHANICS OF CARTILAGE IN TMJ,Normal,Loading,.,Articular cartilage,13,Stress cushioning system of cartilage,BIOMECHANICS OF CARTILAGE IN TMJ,Bone substance of condyle,Shallow,level,Middle level,Deep level,synovia,pression,collagen-,Protein polysaccharide,gel,grid structure system,Function of cartilage:,bearing;stress dispersion;stress cushioning;joint lubrication,Cartilage,.,Stress cushioning system of ca,14,Lubrication of cartilage,BIOMECHANICS OF CARTILAGE IN TMJ,Boundary lubrication,Fluid film lubrication,（,weeping/pression infiltration,）,Hydroaulic static,Hydroaulic motive,Joint lubrication related to,synovia,&,structure and mechanics of cartilage,&,motion state of cartilage,.,Lubrication of cartilageBIOMEC,15,BIOMECHANICS OF DISC AND POSTIOR-DISC TISSUE,.,BIOMECHANICS OF DISC AND POSTI,16,BIOMECHANICS OF DISC AND POSTIOR-DISC TISSUE,Jiont disc,Viscoelastic body:,Low permeability,&,high compression rigidity,Stress concentration buffer:,transfer;stress dispersion;short cushioning,.,BIOMECHANICS OF DISC AND POSTI,17,Postior-disc tissue,BIOMECHANICS OF DISC AND POSTIOR-DISC TISSUE,A High compliance fiberous connective tissue,Elastic fiber grid system,Thin and loosen collagen fiber,A;V;N;lymph;fat,Viscoelastics,Obvious relaxation,High permeability,Low tension strength,High passive deformability,Disc move forward;multiple perforation in postior area of disc,Counterbalance to upper side of lateral pterygoid muscle,.,Postior-disc tissueBIOMECHANIC,18,BIOMECHANICS OF CAPSULE AND LIGAMENT OF TMJ,.,BIOMECHANICS OF CAPSULE AND LI,19,BIOMECHANICS OF CAPSULE AND LIGAMENT OF TMJ,Lateral position of TMJ,Post position of TMJ,.,BIOMECHANICS OF CAPSULE AND LI,20,BIOMECHANICS OF CAPSULE AND LIGAMENT OF TMJ,Ligament-bearing high tension load,Capsule-adapt to multiway tensile loading;stress dispersion;production and transfer of synovia,TMJ capsule,Joint ligament,Stability of TMJ,assistant,.,BIOMECHANICS OF CAPSULE AND LI,21,REMODELING OF TMJ,.,REMODELING O,22,REMODELING OF TMJ,Concept,Development of TMJ:20ys,remodeling in all lifetime,Remodeling,Retrograde remodeling:anterior-lateral incline of condyle&posterior-lateral incline of joint node,Progressive,：,hyperplasia-condyle,Retrograde,：,absorption condyle;disc;node,.,REMODELING OF TMJProgressive,23,REMODELING OF HARD TISSUES IN TMJ,Slight periodical load progressive remodeling,2,。,Heavy load&long time,remodeling cease,retrograde remodeling,destroy of structure and function,.,REMODELING OF HARD TISSUES IN,24,REMODELING OF SOFT TISSUES IN TMJ,Soft tissues,connective tissue zone;proliferative zone;fibrous cartilage zone,Important part:soft tissue on condyle,Remodeling,：,load,formation of cartilage,Aims:adapt to the needs of function.,proliferation and polarization,.,REMODELING OF SOFT TISSUES IN,25,REMODELING OF JOINT CARTILAGE:abrasion and djd,Normal:,Periodical load =swelling pressure,(in collagen-Protein polysaccharide-gel grid system),Abnormal load,system deformation,cytoclasis;destroy of collagen Immunoreaction,exposure of bone tissue under cartilage stimulate symptom(p
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