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.
Number of perforation at different MDI sites.
| Location | No Perforation | Perforation | % |
|---|---|---|---|
| Buccal coronal third (BC) | 147 | 23 | 13% |
| Buccal middle third (MB) | 145 | 25 | 15% |
| Buccal apical third (AB) | 139 | 31 | 18% |
| Palatal coronal third (PC) | 144 | 26 | 15% |
| Palatal middle third (MP) | 154 | 16 | 9% |
| Palatal apical third (AP) | 140 | 30 | 17% |
| Apical tip (Apex) | 127 | 43 | 25% |
| Nasal/sinus | 133 | 37 | 21% |
