Orthodontic movement is possible due to which of the following (Select all that apply. )?
A) Bone resorption
B) Bone apposition
C) Periodontal ligament stretching
D) Hydraulic function of periodontal fluids

Question

Quizplus · Accepted Answer

Orthodontic corrective therapies apply pressure-causing forces on teeth to correct malocclusion.All selections are involved in these forces.They are considered consistent or constant forces,which move teeth because bone-remodeling system exerts pressure on the root,periodontal ligament,and bone.The result is movement of teeth through bone,with osteoclastic bone destruction (resorption)on one side of a tooth and osteoblastic bone formation (apposition)on the other side.Note that these mechanisms differ from the forces that create pathologic tooth mobility.Such forces are intermittent (not constant)and are typically associated with traumatic occlusion.

Orthodontic Movement Is Possible Due to Which of the Following