When teeth are subjected to relatively constant forces tooth mobility is likely to result because forces cause pressure on the root,periodontal ligament,and bone.
A) Both the statement and the reason are correct and related.
B) Both the statement and the reason are correct but are NOT related.
C) The statement is correct,but the reason is NOT correct.
D) The statement is NOT correct,but the reason is correct.
E) NEITHER the statement NOR the reason is correct.

Question

Quizplus · Accepted Answer

Numerous types of forces act on teeth and the periodontium.Two broad categories include constant forces/consistent forces and those that are intermittent.Tooth mobility results from intermittent forces associated with occlusal trauma that tears the periodontal ligament.Often visible radiographically,the periodontal ligament space is enlarged and widened.The result is that the lamina dura is compressed and a tooth subject to occlusal trauma becomes loose and mobile within the socket.By contrast,teeth exposed to constant/consistent forces can tip,rotate,or move but do not exhibit mobility.

When Teeth Are Subjected to Relatively Constant Forces Tooth Mobility