Maxillary 1st Molar Flashcards
Protocone
ML cusp on maxillary molar
Protoconoid
MB cusp on Mandibular molar
Trigon
ML, MB, and DB cusps on max. molar
Trigonoid
MD, MB and mesial marginal ridge of mandibular molar
Talon
DL cusp on max. molar
Talonoid
DB, DL, and distal cusp of mandibular molar
Eruption time for maxillary 1st molar
6-7 years
Eruption time for Maxillary 2nd molar
12-13
Function of Maxillary molars (2)
- Mastication
- Maintain vertical dimensions of face
T/F: Maxillary molars are succedaneous but mandibular molars are not
F: Both are NOT succedaneous
What is the least variable tooth in the mouth
Maxillary 1st molar
Rank the roots on a maxillary molar by size in order of smallest to largest
DB-MB-L
Shape of the crown on a maxillary 1st molar from the buccal view
trapezoidal
What structure on the maxillary 1st molar is in line with the lingual root
buccal groove
T/F: the maxillary 1st molar doesn’t have a lingual grove
F
Buccal HOC for maxillary 1st molar
Cervical third
Lingual HOC for maxillary 1st molar
Cervical third
Crown shape for maxillary 1st molar on lingual
Trapezoidal
Cusp of carabelli is located on which cusp
ML
T/F The lingual MD dimensions are greater than the buccal MD dimensions for the maxillary 1st molar
T
Is the lingual (or palatale) root on the maxillary 1st molar wider MD of FL
MD unique to this root
What is the shape of the crown for the maxillary 1st molar at the mesial and distal views
Trapezoidal
Mesial contact for maxillary 1st molar
Junction of middle and occlusal thirds (offset to facial)
Distal contact for maxillary 1st molar
(wide with 2nd molar) middle third
Which root is wider for the maxillary 1st molar MD or MB
MB
Rank the cusp sizes for maxillary 1st molar in order of smallest to largest
DL-DB-MB-ML
T/F: Each cusp on the maxillary 1st molar has at least one triangular ridge
T
What forms the oblique ridge for the maxillary 1st molar
ML and DB (come together and meet)
How many triangular ridges does the ML cusp typically have
2 (one forming oblique ridge and one mesial to that)
Shape if occlusal table for maxillary 1st molar
Rhomboid/parallelogram
How many fossa do the maxillary 1st molar have, list their names,
4- central fossa, distal fossa, mesial triangular fossa, and distal triangular fossa
What fossa is missing in the 3 cusp maxillary 1st molar
distal triangular fossa
Make sure you know where each fossa is on the tooth
ok (S35)
How many grooves does the maxillary 1st molar have? Names?
4 or 5- central, buccal, lingual, oblique, and distal
Know where each groove is on the tooth
ok (S37)
T/F: The maxillary 1st molar contains a mesial concavity
F: has a distal concavity
