ATTS). Patient's cooperation is the key factor to set prognosis of oral habit correction and have to be proven through analysis of questioners. Methods: Patient cooperation scale (PCS) was made for this research involving 68 orthodontic patients for correction of ATTS from Faculty of Dentistry Indonesia University and Ladokgi as respondents. PCS assessment was based on data sets of: Patient awareness of ATTS (PAw), Patient Acceptance to receive treatment (PAc), and Patient Comfortable for using appliances (PC). The evaluation was obtained by calculation the total score of 10 items from each component