What is the reasoning for using a pivot on one side?

What is the reasoning for using a pivot on one side?

• A. Distract the condyle away from the pain
• B. Align the teeth in occlusion
• C. Increase bite force
• D. Limit jaw movement

Answer: (A)

When a pivot exists on one side, the goal is to shift how the jaw closes so the painful joint is relieved of load. The unilateral pivot changes the mandibular path enough that the condyle on the painful side is displaced away from deep contact, effectively unloading the joint. This distraction reduces compressive forces in the TMJ and often decreases muscle tension and pain because the joint isn’t being driven into its most painful position during bite. In practice, this unloading also tends to lessen posterior tooth contact on the painful side, which helps diminish further joint loading during function. Other options don’t directly target reducing joint loading to relieve pain. Aligning the teeth in occlusion is about static bite relationships and may not relieve internal joint stress. Increasing bite force would likely raise joint loading and potentially worsen pain. Limiting jaw movement can reduce symptoms temporarily but doesn’t specifically address the mechanism of unloading the painful condyle through a unilateral pivot.

When a pivot exists on one side, the goal is to shift how the jaw closes so the painful joint is relieved of load. The unilateral pivot changes the mandibular path enough that the condyle on the painful side is displaced away from deep contact, effectively unloading the joint. This distraction reduces compressive forces in the TMJ and often decreases muscle tension and pain because the joint isn’t being driven into its most painful position during bite. In practice, this unloading also tends to lessen posterior tooth contact on the painful side, which helps diminish further joint loading during function.

Other options don’t directly target reducing joint loading to relieve pain. Aligning the teeth in occlusion is about static bite relationships and may not relieve internal joint stress. Increasing bite force would likely raise joint loading and potentially worsen pain. Limiting jaw movement can reduce symptoms temporarily but doesn’t specifically address the mechanism of unloading the painful condyle through a unilateral pivot.