300 Dental Anatomy: Mandibular Molars Flashcards
The groove pattern for MD 1st molar is what shape?
Y or W or Dryopethicus pattern
The occlusal outline of a MD 1st molar is what shape?
Pentagon
The smallest cusp of the MD 1st molar:
distal
The largest cusp of the MD 1st molar:
MF
What is the rank from largest to smallest cusp on the MD 1st molar?
MB>ML>DLD
*remember for MX 1M the largest is the ML!
Which tooth has the LARGEST M-D crown dimension of ANY other tooth?
MD 1M
The only MANDIBULAR teeth that are wider MD than FL
Mandibular molars
The only POSTERIOR teeth that are wider MD than FL?
Mandibular molars
The greatest FL crown dimension of ALL teeth:
MX 1M
*think bc of cusp of carabelli
The largest occlusal-cervical crown dimension of any mandibular molar?
MD 1M
In relation to the ascending ramus, the facial surfaces of mandibular molars are located:
medial to the border of the ascending ramus
A key feature that differentiates a mandibular 1st molar and a 2nd molar is:
The number of developmental grooves
Mandibular 1st molar has _ developmental grooves
Mandibular 2nd molar has _ developmental groove
MD 1M = 2
MD 2M = 1
How many facial cusps does a mandibular 1st molar have?
3
The developmental groove between the DF cusp and the Distal cusp of the mandibular first molar is called:
DF developmental groove
How many roots and canals does the mandibular 1st molar have?
2 roots and 3 canals
How many mesial canals does the mandibular 1st molar have?
2
The tooth with the longest root OVERALL?
MX Canine
The tooth with the longest root of any other MOLAR?
MD 1M
The greatest root separation of any other tooth:
MD 1M
At the mid root cross section of the mandibular first molar, the largest root is the:
Mesial
Which root of the mandibular 1st molar has the greatest FL dimension?
Mesial
The distobuccal cusp of the mandibular molars occludes with:
Central fossa of MX molars
The ideal position and height of ________ cusps of mandibular 1st molar will accommodate what type of movement?
lingual
Working movement
The groove pattern for the mandibular 2nd molar:
Cross pattern
From the occlusal view, the greatest FL diameter of the mandibular second molar is in the:
mesial 1/3
*mesial side is thicker than the distal side
The crown of the mandibular 2nd molar inclines:
Mesial and Lingual
*think of larger M cusp weighing it down toward back
Mandibular molars have long axis of their root apices ____.
Apices = facial
Mandibular molars have long axis of their crowns ____
Crowns = lingual
Mandibular 1M: __ cusps
Mandibular 2M: __ cusps
MD 1M = 5
MD 2M = 4
Greatest distal root inclination of any other root of any tooth:
MD 3rd molars
