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Questions and Answers
How many developmental lobes does a mandibular 1st molar have?
From which proximal view is only one root visible on the mandibular molar?
What shape is the central fossa of lower 6?
Where is the fifth cusp located on the upper 6?
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Where are the roots of the upper 7 inclined to?
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What is the most likely rudimentary cusp in upper molars?
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What shape do the third molars obtain due to their many supplemental grooves?
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How many major fossae are present on the occlusal surface of upper 6? Enumerate the minor fossae.
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What shape does the occlusal surface of upper 8 have?
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How can we identify the upper first molar?
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Study Notes
Mandibular 1st Molar
- Has five developmental lobes
Mandibular Molar Radiograph
- Only one root is visible on the mandibular molar from the mesial proximal view
Lower 6th Molar
- Central fossa is oval in shape
Upper 6th Molar
- Fifth cusp is located on the distal surface
Upper 7th Molar
- Roots are inclined distally
Upper Molars
- Cusp of Carabelli is the most likely rudimentary cusp
Third Molars
- Obtain a rhomboidal shape due to their many supplemental grooves
Upper 6th Molar Occlusal Surface
- Has four major fossae: central, mesial, distal, and lateral
- Minor fossae include: antero-central, postero-central, mesio-central, and disto-central
Upper 8th Molar Occlusal Surface
- Is rhomboidal in shape
Upper First Molar Identification
- Can be identified by its rhomboidal shape with four major fossae
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Description
Test your knowledge on the cusp types, grooves, fossae, and identifying features of upper molars in dental anatomy. Questions cover topics such as rudimentary cusps, supplemental grooves, major and minor fossae, occlusal surface shapes, and functioning cusps.
