This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Dental
Trauma from occlusion causes all except: 
Select and explain. 
A. Leads to marginal gingivitis, B. Reversible in nature, C. Does not cause pocket formation, D. Alveolar crest height might be reduced
A: Leads to marginal gingivitis
Answer: A: Leads to marginal gingivitis 
Explanation: Clinical features of TFO 

Mobility (progressive) 
Pain on chewing or percussion 
Fremitus 
Occlusal prematurities/discrepancies 
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.