general anatomy & terminology. gingiva root canal enamel corona / crown radix / root cervix /...
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General Anatomy & Terminology
Gingiva
Root Canal
Enamel
Corona / Crown
Radix / Root
Cervix / Neck
Dentin
Occlusal Surface
Anatomy of a Tooth
Pulp
Tooth Numbering
• Fax sheet with tooth numbers
• Distinguish between primary and secondary numbers– Secondary full set = 32 teeth– Primary full set = 24 teeth
• Count 3rd molars (wisdom teeth) even if not present
Types of Teeth
• Incisor
• A tooth with a cutting edge (8)
• Central vs. lateral
• Anterior
• Cuspid/Canine
– A tooth with 1 point (4)
– Anterior
Type of Teeth
• Bicuspid/Premolar
– A tooth with 2 cusps (8)
– Posterior
Types of Teeth
• Molar
– Grinding tooth with multiple cusps (12)
– First Molar
– Second Molar
– Third Molar – Wisdom Teeth
Types of Teeth
Dental Terms
To the front
To the back
A pronounced point on the surface of the tooth
A groove on the surface of the tooth (posteriors)
A sharp pointed depression on the surface of the tooth
•Anterior
•Posterior
•Cusp
•Fissure
•Pit
Dental Terms
• Occlusal - the top surface of posterior teeth (premolars & molars)
• Incisal - the surface edge of anterior teeth (incisors & canines)
• Interproximal – the surface between two teeth
• Mesial – the tooth surface toward the midline of the mouth
• Distal – the tooth surface toward the posterior of the mouth
• Labial – the tooth surface facing the lips (anterior)
• Buccal – the tooth surface facing the cheek (posterior)
• Lingual – the tooth surface facing the tongue
Cavity Classes 101
Cavity Classes
• 5 Classes of Cavities (Caries)
I, II, III, IV, V• Named by location on tooth surface and whether
tooth is anterior or posterior
Applies to Class I & Class II
• O (Occlusal)• MO (Mesio-Occlusal)• DO (Disto-Occlusal)• MOD (Mesio-Occlusal Distal)
Class I
Fillings in fissures and pits.They are located on the occlusal surface of premolars and molars
Cavity Classes
Occlusal
Class II
Fillings in posterior teeth(premolars,molars), including the interproximal surface.
Cavity Classes
DO
MOD
Class III
Fillings on anterior teeththat are on the interproximal surface.
Cavity Classes
Class IV
Fillings on anterior teeththat include the incisal edgeand interproximal surface
Hockey injury
Cavity Classes
Class V
Fillings on the cervical third of both anterior and posterior teeth(e.g. Gingival area)
Cavity Classes
I II III VI VCavity Classes