<prompt> A disease which only affects the formation and eruption of the tooth but does not cause hypoplasia is?HyperthyroidismHypothyroidismVitamin A deficiencyAll of the above  <response>: Hyperthyroidism does not cause hypoplasia.In children, shedding of the deciduous teeth occurs earlier than normal, and eruption of the permanent teeth is greatly accelerated.Ref: Shafers textbook of oral pathology 7th edition page 652 