Rating criteria
| Rating | When it applies |
|---|---|
| 50% | Maximum jaw opening (inter-incisal range) of 0-10 mm, with dietary restrictions to all mechanically altered foods |
| 40% | Inter-incisal range 0-10 mm with no dietary restriction; or 11-20 mm with restriction to all mechanically altered foods; or 21-29 mm with restriction to full-liquid/pureed foods |
| 30% | Inter-incisal range 11-20 mm with no dietary restriction; or 21-29 mm with restriction to soft/semi-solid foods; or 30-34 mm with restriction to full-liquid/pureed foods |
| 20% | Inter-incisal range 21-29 mm with no dietary restriction; or 30-34 mm with restriction to soft/semi-solid foods |
| 10% | Inter-incisal range 30-34 mm with no dietary restriction; or lateral (side-to-side) excursion of only 0-4 mm |
Rating notes
Rated on maximum unassisted vertical jaw opening (inter-incisal range) and any dietary restrictions. Ratings for limited inter-incisal movement are not combined with ratings for limited lateral excursion. Often claimed secondary to PTSD-related bruxism (teeth grinding/clenching).