endodontic access in posterior teeth Flashcards
1
Q
Law of symmetry 1?
A
- except for maxillary molars, the canal orifices are equidistant from a mesial to distal line drawn through the pulp chamber floor
2
Q
Law of symmetry 2?
A
except from maxillary molars, canal orifices are located on a perpendicular line to the mesial distal line drawn across the centre of the pulp chamber floor
3
Q
Law of colour change?
A
colour of pulp chamber floor is always darker than the walls
4
Q
law of orifice location 1?
A
orifices always located at junction of pulp chamber walls and floor
5
Q
law of orifice location 2?
A
orifices located at angles of floor wall junction
6
Q
law of orifice location 3?
A
orifices located at the terminus of the root developmental fusion lines
