If a mandible cannot be satisfactorily manipulated after using an anterior deprogramming device, what does this indicate?

When a mandible cannot be satisfactorily manipulated after the use of an anterior deprogramming device, it signifies underlying issues with the mandibular function or the neuromuscular control of the jaw. Such a situation often indicates that there is a dysfunction present, as the inability to manipulate suggests that the expected normal movements of the jaw are inhibited, which aligns with both statements being true.

An anterior deprogramming device is designed to help patients achieve a more relaxed occlusion by reducing muscle strain and allowing for an accurate bite registration. If manipulation remains inadequate after using this device, it usually indicates a potential dysfunction, such as a discrepancy in the bite, associated muscular issues, or even structural abnormalities that prevent proper jaw movement. This context supports the idea that both the manipulation difficulty and the dysfunction are true, confirming that the problem is likely rooted in either muscular or joint dysfunction. Hence, the choice reflects a clear understanding of the clinical implications of using such a device in dentistry.