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Tooth Morphology > Molars > Flashcards

Molars Flashcards

1
Q

Maxillary Molars: General

A

Most posterior. Largest in dentition (1st>2nd>3rd). Non-succedaneous. Grind. 3 roots. 4-5 cusps.
Wider buccolingually than mesiodistally!
Shorter occlusocervically than anteriors.

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2
Q

1st Maxillary Molars: Cusps

A

5 total: MB, ML(largest), DB, DL(smallest) + Cusp of carabelli

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3
Q

Landmarks of malocclusion

A

MB cusp on maxillary 1st molars.

MB groove on mandibular 1st molars.

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4
Q

Cusp of Carabelli

A

Commonly arises from ML cusp, maxillary 1st molar, nonfunctional cusp

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5
Q

Oblique Ridge

A

Unique transverse ridge on maxillary 1st molars > ML-DB cusp

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6
Q

Maxillary Molars: Roots

A

(3) Palatal, Mesiobuccal, Distobuccal

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7
Q

1st Maxillary Molars: Furcations

A

Buccal: 4mm centered
Mesial: 3mm off-centered
Distal: 5mm perio disease

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8
Q

2nd Maxillary Molars: #’s

A

2, #15

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9
Q

2nd Maxillary Molars: Cusps

A

(4) MB, ML, DB, DL

More variation, 2 shapes: rhomboid or heart.

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10
Q

2nd Maxillary Molars: Roots

A

Smaller and closer together than 1st, narrower furcations

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11
Q

3rd Maxillary Molars: #’s

A

1, #16

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12
Q

3rd Maxillary Molars: Crown

A

Varies, smaller, heart-shaped, 3 functional cusps (DL small or missing)

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13
Q

3rd Maxillary Molars: Variations

A

20% congenitally missing. Impaction (~dentigerous cyst). Peg 3rd molar. Accessory roots. Fused roots.

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14
Q

Maxillary Molars: Clinical Considerations

A

Sinuses. Lingual pits (caries). Concrescence. Occlusion development.
Loss complications: drift, super-eruption.

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15
Q

Mandibular Molars: General

A

Non-succedaneous. 2 roots, M>D. Wider MD.

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16
Q

1st Mandibular Molars: Crown

A

5 cusps: MB(largest), DB, D(smallest), ML, DL. No transverse ridges.
Has MB, DB and Lingual grooves.
*MB groove tends to end in pit (decay!)
Zig zag central groove.

17
Q

1st Mandibular Molars: Roots + Furcations

A

Mesial (2 canals), Distal (1 canal).

Furcations concavities.

18
Q

1st Mandibular Molars: Furcations

A

Buccal: 3mm
Lingual: 4mm

19
Q

2nd Mandibular Molars: Antagonists

A

18(14/15)

31(2/3)

20
Q

2nd Mandibular Molars: Crown

A

4 cusps, MB largest. Cross shaped groove pattern: MB-ML, DB-DL.

21
Q

2nd Mandibular Molars: Roots

A

2 roots, M+D. Closer together than 1st.

22
Q

3rd Mandibular Molars: Variations

A

Anodontia, accessory roots, dentigerous cyst, impaction, partial eruption, Operculum (flap), perio disease + pericoronitis

23
Q

Mandibular Molars: Clinical Considerations

A

Ludwigs Angina- cellulitis infection, can spread and impact breathing
Mulberry Molars, Enamel Pearls, Dilacerarion

24
Q

ALL MOLARS HOC

A

Buccal: cervical
Lingual: middle

25
Q

Maxillary Molars: Contacts

A

Mesial: middle (1st occlusal/middle)
Distal: middle

26
Q

Mandibular Molars: Contacts

A

Mesial: occlusal/middle
Distal: occlusal/middle

Tooth Morphology (7 decks)

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