英语版口腔解剖课件

nullDental AnatomyDental Anatomy nullDental Anatomynull Section I Types of Teeth Function of Teeth Tooth Numbering SystemsnullTypes of Teeth classified by the shape and function null1.切牙(incisor teeth) 2.尖牙(canines/cuspid teeth) 3.前磨牙(premolars) (双尖牙 bicuspid teeth) 4.磨牙(molars)前牙--切牙 尖牙 后牙--前磨牙 磨牙 nullnullUpper Central Incisors and Lateral IncisorsnullLower Central Incisors and Lateral Incisorsnull CaninesnullpremolarsnullUpper First Premolars and Second PremolarsnullLower First Premolars and Second Premolars null磨牙（molar）nullUpper First Molars and Second Molars nullLower First Molars and Second Molars null1.primary/deciduous teeth Function： digest stimulate jaw bone induce permanent teeth’s eruption classified by the duration that teeth exist in the oral cavitynull 2.permanent teeth null Mastication Pronunciation and Language Facial Harmony and Esthetics Function of TeethTooth Numbering SystemsTooth Numbering SystemsPosition System Palmer Notation System Universal System Federation Dentaire International （FDI） SystemnullPosition Systemnull 2．for primary teeth: Roman numerals：I，II，III，IV，V Ex：the primary mandibular left first molarPosition Systemnull 3．For permanent teeth Arabic numerals：1，2，3，4，5，6，7，8 Ex：the maxillary right first molar Position Systemnull 1．For primary teeth English letters：A，B，C，D，E Ex：the primary mandibular left caninePalmer Notation Systemnull 2．For permanent teeth Arabic numerals：1，2，3，4，5，6，7，8 Ex：the maxillary right first premolarPalmer Notation Systemnull permanent teeth：1-32 Ex：#14 the maxillary left first molar Universal SystemnullPrimary teeth：A-TEx：NThe primary mandibular left lateral incisorUniversal SystemnullFDI System Ex：#14 Ex：#54 the maxillary right first premolarthe primary maxillary right first molarnullSection II Structure of TeethExterior View Longitudiual Section Viewnull Exterior View  牙冠（dental crown） 牙根（root of tooth） 牙颈（dental cervix）nullCrownAnatomic crown-Clinical crown- enamel cervixvisible in the mouth gingival linenullCrownThe shape of crown is correlated with its function. nullRoot Anatomic root-Clinical root- cementum cervixinvisible in the mouth gingival linenullThe shape of root is correlated with its function. RootnullExterior View junction of crown and root arch-shaped cervical line 3. dental cervixnull1.牙釉质(enamel) 2.牙骨质(cementum) 3.牙本质(dentin) 4.牙髓(dental pulp) Longitudiual Section View crown，translucency and white hardestroot，yellowbody of tooth，pulp cavity Section III Dental Terminology and Surface Landmarks Section III Dental Terminology and Surface Landmarks Dental Terminology Surface Landmarksnull１．median line-supposed line -divide the face into two halvesDental Terminology null-pass through the center of crown and root２．long axisDental Terminologynull３．contact area-proximal contact part Dental Terminologynull４．height of contour-each axial surface -the most prominent partDental Terminologynull５．line angle and point angle -junction of two surfaces -junction of three surfacesDental Terminologynullincisal（occlusal）、middle、cervical third６．division into thirdsfacial、middle、lingualmesial、middle、distal thirdRoot: cervical、 middle 、 apicalnull １．labial surface buccal surface ２．lingual surface palatal surface ３．medial surface ４．distal surface ５．occlusal surface incisal ridge 7. Surfaces of Teethnull labial and buccal surface lingual and palatal surface mesial surface distal surface occlusal surface and incisal ridge null elevation of crown depression of crown inclined surface lobe Surface Landmarksnull1．dental cusp:cone-shaped. four ridges. four inclined surfaceselevation of crownnullelevation of crown2．tubercle -extra formation of enamel -new-erupted incisal edgenull3．Cingulum - lune -cervical third, lingual surface,anterior toothelevation of crownnullelevation of crown（１）incisor ridge４．ridge - linear elevationnullelevation of crown -- ridge（２）axial ridge: axial surfaces, 　 cusp cervix null（３）marginal ridge--round borders of the enamel anterior teeth— lingual surfaces, mesial and distalelevation of crown -- ridgenull marginal ridege: posterior teeth— occlusal surfaceselevation of crown -- ridge null（４）cusp ridge tip of the cusp mesial、distalelevation of crown -- ridgenull（５）triangular ridge tip of the cusp the center of the occlusal surfaceelevation of crown -- ridgenulltransverse ridge: -buccal and lingual triangular ridge join ; -mandibular first premolarsoblique ridge: maxillary 1st molarselevation of crown -- ridgenull（６）cervical ridge -labial and buccal surfaces; -cervical borderelevation of crown -- ridgenulldepression of crown１．groove：shallow，linear 1） developmental groove: 2） supplemental groove 3） fissurebetween the lobe　regularnot the junction of lobe irregular 　　malcacified groovenulldepression of crown2．pit：pinpoint depression　-the junction of three or more developmental grooves null depression of crown３．fossa：irregular concavity lingual fossa /occlusal fossanull inclined surface inclined surface： comprise the cusp -four ridges and four inclined surfaces of cuspnull lobe lobe： -one of the primary sections of formation in the development of the crown -developmental groove - 4-5 lobesnulllobelobe and developmental groove