Features Flashcards
What features do Permanent Maxillary Incisors (both Centrals and Laterals) have in common?
- *Sharp mesio-incisal angle.
- *Rounded disto-incisal angle.
- Smooth convex labial.
- Well developed cingulum.
- Shovel-shaped palatal.
- Mammelons on eruption (get worn down over time).
What features do Permanent Maxillary Central Incisors have that Laterals do not?
- *Largest Incisors.
- *Straight incisal edge.
- Widest anterior teeth.
- Root straighter but still distally inclined
What features do Permanent Maxillary Lateral Incisors have that Centrals do not?
- *Incisal edge sloped towards distal.
- *More likely to have developmental pits on palatal.
- Smaller and shorter.
What features do Permanent Mandibular Incisors (both Centrals and Laterals) have in common?
- Smooth convex labial surface.
- Straight Incisal edge.
- Mammelons on eruption (get worn down over time).
What features do Permanent Mandibular Central Incisors have that Laterals do not?
- *Smallest Permanent teeth.
- *Symmetrical (more parallel).
- Disto-incisal (DI) edge more rounded, mesio-incisal (MI) edge more sharp.
- Smaller cingulum.
- Root narrow mesially-distally, wide labially-lingually.
- Only slight curvature to the distal.
What features do Permanent Mandibular Lateral Incisors have that Centrals do not?
- *Fan-shaped mesially-distally.
- *Cingulum is more distally placed.
- Slightly larger than Mandibular Centrals.
- Incisal edge NOT at right angles.
- Crown appears twisted on the root.
- More distally inclined.
What features do Permanent Maxillary Canines have?
- *Longest teeth.
- Pentagonal Crown outline.
- Single, pointed cusp in line with root.
- Distal slope longer than mesial.
- Long, single root.
- More symmetrical than Mandibular Canine.
What features do Permanent Mandibular Canines have?
- *Lingual fossa less pronounced than Maxillary Canine.
- Less bulky than Maxillary Canine.
- Pentagonal Crown outline.
- Distal sweep.
- Disto-incisal (DI) ridge longer than mesio-incisal (MI) ridge.
- Labial ridge not as prominent as Maxillary Canine.
What features do Permanent Maxillary Premolars (both 1st’s and 2nd’s) have in common?
- *Narrow mesially-distally.
- *Buccal wider than palatal.
- Buccal and palatal cusp.
- Smaller than Molars.
- Buccal and Palatal Crown convex.
- Difficult to tell apart by Crown only.
- Similar pit and fissure patterns.
- Situated between Canine and 1st Molar.
What features do Permanent Maxillary 1st Premolars have that 2nd’s do not?
- *Buccal cusp higher than palatal cusp.
- *Roots fused and partially bifurcated.
- *Has a mesial marginal ridge (MR) fissure/groove.
- *Mesial margin is concave to fit Canine.
- *Heart-shaped.
- Pentagonal Crown outline (sharp).
- Buccal more angular and wider.
- Incisal slope towards mesial shorter than distal.
- Occlusal line angles sharper.
- Palatal cusp tilts slightly towards mesial.
What features do Permanent Maxillary 2nd Premolars have that 1st’s do not?
- *Buccal and palatal cusps closer in height.
- *Single root.
- *Occlusal line angles more rounded.
- *Palatal cusp more central.
- Crown slightly smaller.
- More rounded from Buccal aspect.
- NO marginal ridge (MR) fissure/groove.
- Mesial and distal pits closer to middle of occlusal table.
- Mesial and distal margins straighter.
What features do Permanent Mandibular Premolars (both 1st’s and 2nd’s) have in common?
- *Occlusal surface lingually inclined.
- *Buccal surface visible from occlusal aspect.
- Crown shorter in height compared to Anterior teeth.
- Smaller than Molars.
- Situated between Molar and Canine.
- Occlusal pits and fissures.
What features do Permanent Mandibular 1st Premolars have that 2nd’s do not?
- *Short, non-functioning Lingual cusp (can look like cingulum).
-Sharp buccal cusp.
- Mesial cusp ridge shorter than distal.
- Smaller than 2nd’s.
What features do Permanent Mandibular 2nd Premolars have that 1st’s do not?
- *Lingual cusp(s) well developed.
- *Can have Y, U or H shaped fissure pattern.
- Can have 2 or 3 cusps (1 buccal, 1 or 2 lingual).
- Larger, more defined and squarer than 1st’s.
What features do Permanent Maxillary 1st Molars have?
- *Largest teeth in Maxillary jaw.
- *5 cusps including Cusp of Carbelli on mesio-palatal (MP) cusp.
- *Oblique (OB) ridge on distal aspect of occlusal surface.
- *3 roots (2 buccal, 1 palatal).
-Rhommboidal shape.
- MP cusp largest.
- Occlusal-palatal (OP) fissure distal of OB ridge.
- Mesial-occlusal fissure mesial of OB ridge.
- Roots are more flared.
What features do Permanent Mandibular 1st Molars have?
- *Occlusal plane lingually inclined (to avoid cheek biting), buccal surface visible from occlusal aspect.
- *Largest teeth in Mandibular jaw.
- *5 cusps (3 buccal, 2 lingual).
- *2 roots (mesial and distal).
- Pentagonal shape.
- Disto-occ pit, mid-occ pit, mesio-occ pit and buccal pit.
- Occlusal fissure.
- 2 occ-buccal fissures, mesio-buccal (MB) fissure and disto-buccal (DB) fissure.
- 1 occ-lingual fissure.
- Mesial and distal marginal ridges (MR).
- Accessory grooves.
What features do Permanent Maxillary 2nd Molars have?
- *Similar but smaller than 1st Molars.
- *More heart-shaped.
- *4 cusps (NO carabelli)
- *3 roots (2 buccal, 1 palatal).
- Less anatomically defined.
- Smaller disto-palatal (DP) cusp than 1st Molars.
- Oblique (OB) ridge more distal as DP cusp is smaller.
- More ‘squished’ looking.
- Roots are straighter and closer together.
What features do Permanent Mandibular 2nd Molars have?
- *Occlusal plane lingually inclined (to avoid cheek biting), buccal surface visible from occlusal aspect.
- *Smaller than 1st Molars.
- *4 cusps (2 buccal, 2 lingual).
- *2 roots (mesial and distal).
- More symmetrical and rectangular shaped than 1st Molars.
- Smaller.
- Disto-occ pit, mid-occ pit, mesio-occ pit and buccal pit.
- No distal cusp.
- Cross-shaped fissure pattern.
- Mesial and distal marginal ridges (MR).
- Accessory grooves.
- Roots more distally inclined, shorter and closer together than 1st Molars.
What differences in features do the Primary Maxillary Incisors (both Centrals and Laterals) have?
Centrals:
- Crown wider and larger.
- Disto-incisal (DI) edge curved, but not as much as lateral.
- Root wider and longer.
Laterals:
- Crown narrower.
- DI more curved.
- Root narrower and longer.
What features do Primary Mandibular Central Incisors have?
- *Smallest teeth in the mouth.
- *More symmetrical than laterals.
- Cingulum less defined than Maxillary Centrals.
- Root shorter than lateral.
What features do Primary Mandibular Lateral Incisors have?
- Disto-incisal (DI) corner more rounded.
- Incisal edge sloped towards distal.
- Crown more ‘fan’ shaped.
- Root longer than Centrals and more distally inclined.
What features do Primary Maxillary Canines have?
What features do Primary Mandibular Canines have?
