General Anatomy & Terminology. Gingiva Root Canal Enamel Corona / Crown Radix / Root Cervix / Neck Dentin Occlusal Surface Anatomy of a Tooth Pulp.

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