1 / 7

What does the literature say about canal diameters?

What does the literature say about canal diameters?. Median of maxillary canal diameters 1mm from apex Mx. cent. incisor .34mm Lateral incisor .45mm Canine .31mm Premolar .37mm MB1, MB2 (molar) .19mm DB .22mm Palatal .33mm. Wu et al 2000.

tyrone-santiago
Download Presentation

What does the literature say about canal diameters?

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. What does the literature say about canal diameters? Median of maxillary canal diameters 1mm from apex • Mx. cent. incisor .34mm • Lateral incisor .45mm • Canine .31mm • Premolar .37mm • MB1, MB2 (molar) .19mm • DB .22mm • Palatal .33mm Wu et al 2000

  2. What does the literature say about canal diameters? Median of mandibular canal diameters 1mm from apex • Md. central incisor .37mm • Lateral incisor .37mm • Canine .31mm • Premolar .35mm • MB (molar) .40mm • ML .38mm • Distal .46mm Wu et al 2000

  3. Radiographic Terminus – NOT!! Radiographic terminus alters throughout life – cellular cementum deposition Apical foramen

  4. Electric Foramenal Locators In 1962 Sunada determined that the resistance between oral mucosa and periodontal ligament is a constant value 6.5 ohms (40/μAmp) • must turn unit on before attaching probe to unit… “might think in previous tooth” • canals can be wet, but chamber must be dry… no shared fluid between canals • instrument must be free in access opening… no contact with metal

  5. * Anatomic apex PDL, cementum & bone EAL = 0.0 Bleeding point

  6. Working Length • generic knowledge of root lengths • measure radiograph – • advantage of digital images • foramenal locators • USED REPEATEDLY • final WL determined after coronal debridement – lengths change with shaping foramenal locators USED REPEATEDLY

More Related