四川大学：《口腔解剖生理学》课程教学资源（PPT课件讲稿）Anatomy of Permanent Anterior Teeth

Anatomy of Permanent Anterior Teeth Zhao Qing

Anatomy of Permanent Anterior Teeth Zhao Qing

Permanent teeth >nci sors Canines Premolars oars

Permanent Teeth ➢ Incisors ➢ Canines ➢ Premolars ➢ Molars

>Incisors Common Characteristics crown 4 axia sur faces 1 incisal ridge l abiol ungual: quadr ang le proximal: triangle root: sing straight

➢ Incisors Common Characteristics： 1．crown：4 axial surfaces， 1 incisal ridge labiolingual： proximal：triangle 2．root：single， straight quadrangle

>Incisors 1.max i l lary central incisors (11) the largest inc i sor s the nearest to the upper midi ine

1.maxillary central incisors (1 1 ) - the largest incisors - the nearest to the upper midline ➢Incisors

(1)crown of max i l l ary central incisors labia a. quadr angle b. straight inc i sal edge promi nent cervival border 邻面 唇面

（1） crown of maxillary central incisors 唇面 1）labial a. quadrangle b. straight incisal edge prominent cervival border 邻面

crown of max i I ary central inc sors abia l mesial -right angle C. Inc I sal angle: distal-round d deve l opment groove: obvious in the incisal third e the he i ght of contour cervical third cervical ridge f. form: resemble to the facial 邻面点 shape

crown of maxillary central incisors labial c.incisal angle： d.developmental groove： -obvious in the incisal third e.the height of contour： cervical third,cervical ridge f.form:resemble to the facial shape mesial –right angle distal-round 邻面

crown of maxillary central inc isors 2)I inga l a. the reverse of the ab ial aspect, smaller b. I ungual fossa c marginaI ridge c Ingu l um e inc i ssal ridge

2）lingual a.the reverse of the labial aspect,smaller b.lingual fossa c.marginal ridge d.cingulum e.incissal ridge crown of maxillary central incisors

crown of maxil lary central incisors 3) proximal a. triangle cervical ine V-shaped -more curved on the mesia surface than the distal one

crown of maxillary central incisors 3）proximal a.triangle; cervical line: -V-shaped -more curved on the mesial surface than the distal one

3) proxima b. mesial aspect: larger and flat distal aspect: smaller and projecting contact area: incisal third C. I nc I saI r dge ab ial to the long ax is

3）proximal b.mesial aspect: larger and flat， distal aspect: smaller and projecting contact area: incisal third c.incisal ridge: labial to the long axis

crown of maxil lary central incisors 4) incisal ridge labial: flating i sal edge I inga l: prom inent inc i sa d r i dge incisal ridge: labial to the long axis

4）incisal ridge: labial:flat incisal edge lingual:prominent incisal ridge crown of maxillary central incisors incisal ridge: labial to the long axis