Nomenclature and landmarks
Application of
Nomenclature
(一 ) Median line
(二 ) Long axis
(三 ) Axial surface
(四 ) Contact area
(五 ) Line angle
(六 ) Point angle
(七 ) Height of contour
(八) Division into third
二,nomenclature of the
teeth surface
(一) Labial surface
(二) Buccal surface
( 三 ) Lingual surface
( 四 ) Mesial surface
( 五 ) Distal surface
( 六 ) Occlusal
( 七 ) Incisal
三,landmark
( 一 ) process of the crown
1,Cusp
2,Tubercles
3,Ridge
ridge
? Axial ridge
? Marginal ridge
? Cusp ridge
? Triangular ridge
? Transverse ridge
? Oblique ridge
? Buccal-Cervical ridge
? Cingulum
Axial ridge
Marginal ridge
Cusp ridge
Triangular ridge
Oblique ridge
Transverse ridge
?Buccal-Cervical ridge
?Cingulum
(二) depression of the teeth
1.Fossa
2.Groove
? Developmental groove
? Supplemental groove
? Sulcus
3.Pit
(三) Inclined plane
(四) Lobe