Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Mean interorifice distance for maxillary molars (in mm)
| Maxillary teeth | MB-DB | MB-MB2 | MB-P | MB2-P | DB-P |
|---|---|---|---|---|---|
| First molar (with RCI) | 2.7 | 2.1 | 5.3 | 3.7 | 3.8 |
| First molar (without RCI) | 2.6 | 2.2 | 5.3 | 3.9 | 3.8 |
| Second molar (with RCI) | 2.4 | 2.1 | 5 | 3.6 | 3.9 |
| Second molar (without RCI) | 2.3 | 2.3 | 5 | 3.5 | 3.9 |
RCI: Root canal isthmus, MB: Mesiobuccal, DB: Distobuccal, MB2: Second mesiobuccal, P: Palatal
