You will be shown an abstract from a biomedical research paper. Given this abstract, your task is to extract all unique entities of the following types: ["Outcome", "Participant", "Intervention"].

Please return the output as a JSON object of the format: {"Participant" : ["patients with COPD", ...], "Intervention" : ["Atenolol", ...], "Outcome" : ["blood pressure", ...]}. The keys should be entity types and values should be lists of extracted entities belonging to the corresponding type. If you cannot find entities belonging to a specific type, the value should be [].

Only output the JSON object and do not include any additional text.

Abstract:

Treatment outcome of appliance therapy in temporomandibular disorder patients with myofascial pain after 6 and 12 months . AIM To compare the long-term effect of treatment with a stabilization appliance ( group T ) and treatment with a control appliance ( group C ) in temporomandibular disorder ( TMD ) patients with myofascial pain . METHODS In this controlled trial , 60 patients ( mean age 29 years ) with myofascial pain were evaluated after 10 weeks of treatment with either a stabilization appliance or a control appliance . All 60 patients were then assigned to 1 of 3 groups according to demand for treatment . Seventeen patients from group C requested another appliance and were given a stabilization appliance , thus creating a mixed group ( group M ) . RESULTS A significant difference in improvement of overall subjective symptoms in an intent-to-treat analysis between groups T and C was found at the follow-ups . In a survival analysis of treatment compliance , a significant difference was found between groups T and C. At the 6- and 12-month follow-ups , a significant reduction in myofascial pain , as measured on a visual analog scale , was found in all three groups . A significant decrease in frequency and intensity of myofascial pain was found in group T at the follow-ups . A significant decrease in number of tender sites on the masticatory muscles was found in group T at the follow-ups . CONCLUSION The results support the conclusion that the positive treatment outcome obtained by use of a stabilization appliance to alleviate the signs and symptoms in patients with myofascial pain persisted after 6 and 12 months . Most patients in groups T and M reported positive changes in overall subjective symptoms in this trial . We therefore recommend use of the stabilization appliance in the treatment of TMD patients with myofascial pain .
{"Intervention": ["control appliance", "appliance therapy", "stabilization appliance"], "Outcome": ["myofascial", "number of tender sites on the masticatory muscles", "overall subjective symptoms", "myofascial pain .", "visual analog scale", "myofascial pain", "frequency and intensity of myofascial pain", "improvement of overall subjective symptoms"], "Participant": ["29 years", "TMD", "60", "myofascial pain", "temporomandibular disorder"]}