Deciduous Ankylosis Occurs When

Question

Deciduous ankylosis occurs when
A) cementum is fused to the alveolar bone
B) deciduous roots are fused to the permanent tooth crown
C) deciduous roots are intertwined,twisted,or fused
D) there is no permanent tooth to cause deciduous root resorption

Accepted Answer

Ankylosis is defined by fusion of the alveolar crest in the cervical area with the cementum of a resorbing root.Typically,most of the primary root has resorbed,yet the tooth remains firmly in place.This prevents the permanent tooth below from erupting.