Objectives: This study investigated the effect of core stability training on pain, function, quality of life, and posture in individuals with temporomandibular disorder. Materials and methods: Participants were divided into the following: the core stability group and the control group. For pain assessment, the Graded Chronic Pain Scale 2.0; for function, the 20-item Jaw Functional Limitation Scale (JFLS-20); for oral health–related quality of life, Oral Health Impact Profile-14 (OHIP-14); and for posture assessment, the New York Scale were used. Rocabado exercises were applied to the control group. Additionally, spinal stabilization exercises were applied for the core stability group for 6 weeks. Results: Both types of exercise contribute positively to the quality of life associated with oral health. Rocabado exercise provided a significant change in Chronic Pain Intensity and Disability Score. Conclusion: Rocabado exercise and core stability training, implemented with Rocabado, provide significant changes in pain values. When evaluated in terms of function, no significant difference was found in both exercise programs. Clinical relevance: Core stability training with Rocabado provides significant changes. Clinical trial registration number: NCT04755621. [ABSTRACT FROM AUTHOR]