Based on the provided reference, the last stage of TMJ dysfunction is Stage 4.
Understanding Stage 4 of TMJ Dysfunction
While TMJ dysfunction can manifest in various ways and stages, the reference specifically outlines a progression where Stage 4 is characterized by a significant decrease in jaw pain, despite the condition worsening internally.
Here's what the reference states about Stage 4:
- Least Jaw Pain: Surprisingly, this stage is noted for having the least amount of pain.
- Reason for Reduced Pain: The pain experienced in previous stages often disappears because the disc that normally cushions the joint is no longer positioned correctly.
- Bone-on-Bone Contact: With the disc dislocated, the jaw joint is exposed, leading to the bones rubbing directly against each other.
- Joint Wear: This bone-on-bone contact initiates the wearing down of the joint itself, indicating significant degeneration.
In essence, Stage 4 represents a point where structural damage is occurring (joint wear due to bone-on-bone contact caused by a dislocated disc), even though the subjective experience of pain may be reduced compared to earlier stages.
Understanding these stages can help in recognizing the progression of TMJ issues, even if pain levels fluctuate.
