Lecture 8 Mandibular First Molar Flashcards
When does the mandibular first molar typically erupt?
• A) At birth
• B) 6 years old
• C) 12 years old
• D) 18 years old
B) 6 years old
What is the general shape of the mandibular first molar crown?
• A) Spherical
• B) Cuboidal
• C) Cylindrical
• D) Triangular
B) Cuboidal
Which outline of the mandibular first molar crown is longer and flatter, slightly convex?
• A) Distal
• B) Mesial
• C) Buccal
• D) Lingual
B) Mesial
On the buccal aspect of the mandibular first molar, the cervical outline is described as:
• A) Curved with a prominent apex
• B) Almost flat with slight curvature
• C) Convex with a sharp apex
• D) Indented with a deep curve
B) Almost flat with slight curvature
What shape is the occlusal aspect of the mandibular first molar described as?
• A) Triangular
• B) Rectangular quadrilateral
• C) Circular
• D) Oval
B) Rectangular quadrilateral
How many cusps are found on the occlusal surface of the mandibular first molar?
• A) 3
• B) 4
• C) 5
• D) 6
C) 5
Which grooves are present on the occlusal aspect of the mandibular first molar?
•A) Mesiodistal and buccal
•B) Mesiobuccal, distobuccal, and lingual
•C) Buccal and lingual
•D) Central and marginal
B) Mesiobuccal, Distobuccal and lingual
What is the typical root canal configuration for the mandibular first molar?
A) One canal per root
B) Two canals in the mesial root and one canal in the distal root
C) Three canals in the mesial root and one in the distal root
D) Two canals in each root
B) Two canals in the mesial root and one canal in the distal
On the mesial aspect of the mandibular first molar, which outline is characterized by a V-shape?
• A) Cervical outline • B) Occlusal outline • C) Buccal outline • D) Lingual outline
B) Occlusal outline
On the occlusal face of the mandibular first molar, which outline is characterized by a “w” shape with rounded mesial and distal convergences?
• A) Buccal outline • B) Mesial outline • C) Distal outline • D) Lingual outline
D) Lingual outline
How many cusps does the mandibular first molar have, and which is the largest?
• A) 4 cusps, largest is the mesiolingual
• B) 5 cusps, largest is the mesiolingual
• C) 4 cusps, largest is the distobuccal
• D) 5 cusps, largest is the distobuccal
B) 5 Cusps, largest ML
On the lingual aspect of the mandibular first molar, how is the cervical outline described?
• A) Sharp and angular
• B) Almost flat with slight curvature
• C) Highly curved with a deep notch
• D) Convex with a prominent ridge
B) almost flat with slight curvature
On the occlusal aspect of the mandibular first molar, which outlines exhibit convergence towards the lingual?
• A) Buccal and mesial outlines • B) Buccal and distal outlines • C) Mesial and distal outlines • D) Lingual and buccal outlines
C) Mesial and distal
On the buccal face of the mandibular first molar, what is the shape of the occlusal outline?
A) V-shaped
B) W-shaped
C) U-shaped
D) Straight
A) V-shaped
On the lingual face of the mandibular first molar, what is the shape of the occlusal outline?
A) V-shaped
B) W-shaped
C) U-shaped
D) Straight
B) W-shaped
