Lower 7 Flashcards
Draw out the lower 7 focusing on the fissure pattern and cusp sizes
the fissure pattern is generally + shaped
What are the features of the mesio-buccal cusp
it is the largest
it has a straighter ridge than the distobuccal
there is a buccal groove which extends onto the buccal surface
what are the features of the disto-buccal cusp
it is smaller than the mesio-buccal
the marginal ridge is more curved
what are the features of the distolingual cusp
it is the smallest
it is more curved
what are the features of the mesiolingual cusp
it is the highest
describe the pulp of the lower 7
3 canals - 2 mesial 1 distal
3 orifices
describe the mesial buccal canal orifice
he mesio-buccal canal orifice on the chamber floor is located slightly mesial but close to the mesio-buccal cusp tip
Describe the mesio-lingual canal orifice
The mesio-lingual canal orifice is just lingual to the mesial development groove of the mesial marginal ridge. It is not located as near the cusp tip but at a more central location
describe the distal root orifice
1 orifice located distal to the centre of the crown
What is the shape of the crown from the buccal side
what is the shape of the crown from the lingual side
What does the pulp look like?
