landmarks of individual teeth - randwick college...
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Landmarks of
Individual Teeth
Stage 1 Anatomy ver1 2011
LobesLobes: Part of a tooth formed by any one of the
major developing centres that begin calcification (hardening) of the tooth
Class Exercise
Page 23 in your text book
CingulumCingulum: Lingual lobe of anterior teeth
MesialView Lingual
View
Class Exercise
Page 24 in your text book
CuspCusp: a major point or rounded eminence on
or near the occlusal or incisal surface of a crown
Class Exercise
Page 24 in your text book
Mesiobuccal cusp
Distobuccal cusp
Distal cusp
Distolingual cusp
Mesial lingual cusp
Mesial Distal
Buccal
Lingual
OcclusalView
Cusp
Permanent Mandibular Right First Molar Class Exercise
Developmental GrooveDevelopmental Groove: Fine depressed
line in the enamel of the tooth, where the lobes of the crown join
OcclusalView
OcclusalView
LabialView
Class Exercise
Page 24 in your text book
Buccal Developmental
Groove
Distobuccal Triangular
DevolopmentalGroove
Lingual Developmental Groove Central Developmental
Groove
Mesial Distal
Buccal
Lingual
OcclusalView
Developmental Groove
Class Exercise
FissureFissure: a deep cleft formed at the bottom
of a groove during the development and fusion of the lobes
Class Exercise
Glossary section (p432) of your text book
FossaFossa: a shallow depression found on the
lingual surfaces of most anterior teeth and on occlusal surfaces of posterior teeth
Class Exercise
Page 24 in your text book
PitPit: a deep fault formed where two
grooves meet or cross one another (the most common site for dental caries)
Class Exercise
Page 24 in your text book
Mesial Pit
Distal Pit
Central Pit
Pit
OcclusalView
Mesial
Distal
Buccal
Lingual
Permanent Maxillary Left First Molar Class Exercise
Glossary section(p432) of your text book
RidgeRidge: any line raised area on the surface of
a tooth
Class Exercise
Page 24 in your text book
Marginal Ridge
MesialDistal
Buccal
Lingual
MesialMarginal
Ridge
DistalMarginal
Ridge
Occlusal View
Permanent Mandibular Right First Molar Class Exercise
Page 24 in your text book
Triangular RidgeTriangular Ridge: the ridge which runs from
the tip of a cusp to the central groove of the occlusal surface of a posterior tooth
OcclusalView
Class Exercise
Page 26 in your text book
Transverse RidgeTransverse Ridge: Ridge formed by the union of
two triangular ridges, transversing the surface of a posterior tooth from buccal to lingual side
OcclusalView
Class Exercise
Page 26 in your text book
Oblique Ridge
Oblique Ridge
Mesial
Distal
Buccal
LingualOcclusal
View
Permanent Maxillary Left First Molar Class Exercise
Page 171 in yourtext book &Glossary section
Secondary Grooves
Secondary Grooves: are small, irregularly placed grooves, not at the junction of lobes or major portions of a tooth, usually found on occlusal surfaces
Class Exercise
Glossary section (p432) of your text book
Marginal GrooveMarginal Groove: small grooves that run
from occlusal to mesial and/or distal surfaces of molars and premolars crossing the marginal ridge
OcclusalView
LingualView
OcclusalView
Class Exercise
Glossary section (p438) of your text book
TubercleTubercle: is a small elevation of enamel on
an area of the crown of the tooth
Class Exercise
Page 24 of your text book
Summary
• Lobes• Cingulum • Cusp• Developmental Groove• Fissure• Fossa• Pit
• Ridge– Marginal Ridge– Triangular Ridge– Transverse Ridge– Oblique Ridge
• Groove – Secondary (Supplemental)– Marginal
• Tubercle
Landmarks of Individual Teeth