d2 spring perio 2 exam1

Question 1

what is primary occlusal trauma?

Answer 1

primary occlusal trauma is when teeth experience heavy bite forces such that stress cracks, chips, wear occur. **NO loss of attachment.
2ndry o.t. occurs on reduced periodontium where Aloss has occurred.

1st and 2dry occlusal trauma can exist in the same px

Question 2

what is secondary occlusal trauma?

Answer 2

seconcardy occlusal truama is when there has been some periodontal Attachment loss and normal forces can no longer be tolerated. = results in mobility/ loosening.
(Aloss= loss of gingival attachment fibers/ periodontal ligament/ bone)
-1ry and 2ndry occ. truama can exist in the same px
-1ry occlusal truama is excessive force on healthy (no Aloss) periodontium

Question 3

are lateral forces on teeth good or bad?

Answer 3

Lateral forces on teeth are bad. Axial forces on teeth are good (long axis!)

Question 4

what is the worst type of occlusal contact relationship?

Answer 4

cusp-to-cusp is the worse occlusal contact relationship. incline to incline is also bad. cusp-to flat area is good, and cusp to fossa is ideal.