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Table 4 Mouth opening distance in non-TMD, TMD subjects and TMD subgroups. Descriptive statistics.

From: Signs and Symptoms of Temporomandibular Joint Disorders Related to the Degree of Mouth Opening and Hearing Loss

  TMD N Mean Std. Deviation
Mouth opening
(mm)
Non-TMD 124 46.4476 7.16257
  TMD 340 44.5891 6.11675
  Mild 108 45.3704 5.85908
  Moderate 136 44.0792 5.69746
  Severe 96 44.4346 6.93428