TMJ Goniometer & MMT Flashcards
TMJ depression normal range
40-50 mm
TMJ depression normal end feel
Firm
TMJ measurement points
Upper central incisor and lower central incisor
TMJ protrusion normal range
3-10 mm
TMJ protrusion normal end feel
Firm
TMJ measurement points
Lower central incisor and upper central incisor
TMJ lateral excursion normal range
10-12 mm
TMJ lateral excursion normal end feel
Firm
TMJ lateral excursion measurement points
Distance between the upper central incisor and lower central incisor
TMJ elevation MMT grade F
Patient closes jaw tightly and therapist can’t move jaw
TMJ elevation MMT grade WF
Patient closes jaw but therapist opens mouth
TMJ elevation MMT grade NF
Patient closes mouth but tolerates no resistance
TMJ elevation MMT grade 0
Patient cannot completely close mouth
TMJ depression MMT grade F
Completes available range and holds against strong resistance
TMJ depression MMT grade WF
Can open mouth to accomodate two or fewer stacked fingers and can take some resistance
TMJ depression MMT grade NF
Minimal motion occurs and no resistance
TMJ depression MMT grade 0
No voluntary depression occurs
TMJ lateral deviation MMT grade F
Moves center point of the lower incisors laterally over 3 upper teeth and tolerates strong resistance
TMJ lateral deviation MMT grade WF
Lateral motion across one upper tooth and resistance is minimal
TMJ lateral deviation MMT grade NF
Minimal deviation occurs and no resistance
TMJ lateral deviation MMT grade 0
No motion
TMJ protrusion MMT grade F
Moves lower teeth in front of the upper teeth and can tolerate strong resistance
TMJ protrusion MMT grade WF
No discernible gap between the upper and lower teeth tolerates slight resistance
TMJ protrusion MMT grade NF
Minimal motion detected and no resistance
TMJ protrusion MMT grade 0
No motion
