The goal of this study is to evaluate intra-oral botulinum toxin type A injection into lateral pterygoid muscle using a surgical guide synthesized by virtual planning based on CT with soft tissue window. * To evaluate improvement of maximum interincisal opening (MIO) before and after injection. * To assess change in disc position before and after injection. * To evaluate recovery of symptoms as clicking, tenderness of TMJ and tenderness of lateral pterygoid muscle after injection. Researchers will compare intra-oral botulinum toxin type A injection using a surgical guide synthesized by virtual planning based on CT with soft tissue window to conventional EMG guided botulinum toxin injection into lateral pterygoid muscle in patient with anterior disc displacement with reduction. Participants will be injected with botulinum toxin type A by intraoral approach.
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AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
• Maximum interincisal opening in millimeters.
Timeframe: 6 months
clicking
Timeframe: 6 months
temporomandiular joint tenderness
Timeframe: 6 months
lateral pterygoid muscle tenderness
Timeframe: 6 months