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Valentine11 Valentine11
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6 years ago
All of the following are reasons for orthodontic appliances being a contributing factor for periodontal disease except one. Which one is the exception?
 
  A) Limited access for oral hygiene
  B) Uneven wires and brackets are plaque retentive
  C) Bands on molar are plaque retentive
  D) Appliance causes chemical injury to the gingival
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wrote...
6 years ago
D
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