Patient: A 31 year old male complained of pain around bilateral temporomandibular joints during hard food mastication. Clinical examination revealed that teeth contact was not found in an anterior region but only in molar regions neither in intercuspal position nor during lateral excursion. Discussion: A study reported that the working condyle appeared to be pulled apart from the glenoid fossa during lateral movements guided by only molar teeth. In such phenomena lateral movements might bring

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... sorders to the articular capsule. The presented case was diagnosed as temporomandibular disorder which was caused by the guidance of molar region during lateral movement without the anterior guidance. Conclusion: I succeeded in improving the patient's clinical symptoms during lateral jaw movement by changing the guiding teeth from molar teeth to canine-premolar teeth; although, the canine guidance could not be provided because of the patient's anterior open bite.