Orofacial Flashcards
General rules: curvature of CEJ is about
1mm more on the mesial surface than the distal
General rules: if the tooth roots curve they usually curve
Distally
General rules: what is more rounded than the mesial incisal edges
Distal incisal edges of anterior teeth
General rules: mand anterior teeth tend to wear on what surfaces
Max anterior teeth wear on what surfaces
Mand: labial Incisal edge
Max: lingual Incisal edge
General rules: permanent molars are generally ____ in height and have fewer ____ the more posterior
Smaller; fewer cusps
Roots of molars tend to be shorter and closer together the more posterior T/F
True
Molars which one has widest and longest roots
First molars
Max incisors crown is wider?
Mesiodistally than faciolingually
Crown of max incisors is ____ on labial side
Convex
Crown of max incisors is ____ on lingual side
Concave
Greater crown to root ratio
Max centrals
Max central incisors mesioincisal angle is
Sharp (90°)
Mand incisors crown is wider
Faciolingually than mesiodistally
Mand centrals cervical line curves more incisally on
Mesial
Mand centrals height of curvature of the cervical line is greater on
Mesial
Canines have a single conical cusp with a
Well developed mesiofacial love
Max canines cervical lines curves more incisally on
Mesial than distal
Mand canines lingual surface almost
Smooth with poorly developed ridges Cingulum and fossa
Premolars have at least how many cusps
2 cusps
Maxillary premolars how many cusps
2 major; buccal and lingual
Max premolars are wider
Faciolingually than mesiodistally
Max premolars facial and lingual cusps nearly the same
Height
Max first premolar facial cusp is slightly
Longer than lingual cusp
Maxillary 1st premolar how many roots
2
Mand premolars cusps
Prominent facial cusp with one or two much smaller lingual cusps
Mand 1st premolar occlusal surface tilted towards
Lingual side
Mand first premolar cervical line on medial curves more
Occlusally than on distal
Maxillary molars crowns wider
Faviolingually than mesiodistally
(3 roots: 2 facial 1 lingual)
Where is 5th cusp situated on max first molar
Mesiolingual cusp
Mand molars crowns wider
Mesiodistally than faciolingually
Mand first molar how many cusps how many roots
3 facial cusps
2 roots
How many roots and canals do max first molars have
3 roots 4 canals
How many roots and canals do max second molars have
3 and 3
How many roots and canals do mand first molars have
2 roots 3 canals
Mand second molar roots and canals
2 and 2
