Arthrocentesis and Temporomandibular Joint Disorders: Clinical and Radiological Results of a Prospective Study

Table 2

Comparison of pretreatment and posttreatment mouth opening.

Period	Mean	Group A	Group B	𝑃	𝑃 (group A)	𝑃 (group B)
Preoperative	25.3±5.5	25.3±5.7	25.2±4.9	<0.001	<0.001	<0.001
Postoperative	43.8±5.6	43.2±5.5	47.0±5.7
1 year	37.1±8.4	37.6±6.3	34.5±13.3