<prompt> Trauma from occlusion causes all except:Leads to marginal gingivitisReversible in natureDoes not cause pocket formationAlveolar crest height might be reduced  <response>: Clinical features of TFO Mobility progressive Pain on chewing or percussion Fremitus Occlusal prematuritiesdiscrepancies Wear facets in the presence of other clinical indicators Tooth migration Chipped or fractured tooth teeth Thermal sensitivity Key notes :TFO hardly affects the gingival soft tissues. 