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Table 2 Mean values, standard deviation and standard error of mean for pain free maximum interincisal opening

From: A stepped approach for the management of symptomatic internal derangement of the temporomandibular joint

  Mean Standard deviation Standard error of mean
Pre-op value (mm) 27.636 8.652 1.151
Value at discharge (mm) 33.363 6.827 1.189
Difference 5.727 7.989 1.380