1. mastication (chewing)

2. esthetics (appearance)

3. phonetics (speech)

dentist induced imperfections in the periodontium, also harm to the tissues caused by the dentist

DON'T DO THIS TO YOUR PATIENTS!

-crown composed of a single lobe - most primitive shape

-function is to grasp and combat, not chew

-seen in lower vertebrates

-three lobed tooth

-the evolutionary step in different types of teeth

-hoofed mammals (horse, deer, cows)

-have extensive lateral jaw movement

-primary division of teeth

-separated by distinguishable primary grooves

-pattern helps in function of teeth

-DON'T form seperately and then calcify

-4 lobes total

1. mesiolabial

2. middle labial

3. distal labial

4. ligual

-mamelons show where labial lobes are and labial depressions separate lobes

-most have 4 lobes (EXCEPT MANDIBULAR 2nd PREMOLAR)

1.  mesiobuccal

2. middle buccal

3. distobuccal

4.  lingual

-separated by central groove and mesiobuccal and distobuccal developmental depressions

-5 lobes (3 buccal, 2 lingual)

1. mesiobuccal

3. middle buccal

3. distal buccal

4. mesiolingual

5. distolingual

-2 grooves

1. central groove

2. lingual groove

-also has mesiobuccal and distobuccal developmental depressions

-4 lobes (2 buccal and 2 lingual)

1. mesiobuccal

2. distobuccal

3. mesiolingual

4. distolingual

-3 grooves

1. buccal groove

2. central groove (distal and mesial portion)

3. distolingual groove

-5 lobes (2 mesial, 3 distal)

1. mesiobuccal                 2. distobuccal

3. mesiolingual                 4. distolingual

5. distal

-4 grooves

1. buccal groove

2. lingual groove

3. central groove (distal and mesial portion)

4. distobuccal groove)

-4 lobes (2 mesial, 2 distal)

1. mesiobuccal               2. distobuccal

3. mesiolingual               4. distolingual

-3 grooves

1. buccal groove

2. lingual groove

3. central groove (mesial and distal portions)

-curve from canines through buccal cusps on premolars/molars

-moves upward as it goes posterior

-teeth in normal occlusion are tipped to follow curve

*maxillary molar roots tipped mesially

*mandibular molar roots tipped distally

-medio-lateral curve of the occlusal surface of post. teeth

-right angle to Curve of Spee

-teeth in normal occlusion will tip to fit curve

*mandib. post. crown tipped lingually

*maxil. post. crowns tipped buccally

-combination of Curve of Spee and Curve of Wilson to create 3D curvature of occlusal surface

-concave for mandibular arch

-convex for maxillary arch

-root --> lingual

-incisor roots --> mesial

-canine roots --> distal

-roots --> lingual (GREAT)

-roots --> mesial (moderate)

-incisors roots --> mesial (extremely slight)

-canine roots --> distal (very slight)

-roots --> distal

-1st premolar roots --> lingual (slight)

-2nd premolar roots --> buccal (slight)