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Curved canals and fracture - Courtesy ROOTS

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credited for the individual posts where they are -
From: Bojidar Kafelov
Sent: Thursday, September 23, 2010 7:41 PM
Subject: [roots] RCT/NSRCT on upper molars - opinions are welcome

I want to share with you a case that was a hard one for me in many ways!
Male patient, 45 years old, needed retreatment of tooth 1.7 and RCT 
of tooth 1.6. Very curved canals, difficult access to the teeth and
so on... and I have to admit I made a big mistake - I've fractured
a PathFile in MB2 in the first upper molar. The reason of the fracture 
is that I didn't appreciate the curvatures and forced a little bit 
the file! Anyway, the two canals join at the apex (2mm from the foramen)
so I think there won't be a biological problem. That error I didn't 
make on the second upper molar. Any advice, comment, critics or 
anything is very welcome!  - Bojidar Kafelov

Protaper flaring

6 yr old Empress

Cvek pulpotomy

Middle mesial

Endo misdiagnosis

MTA retrofill

Resin core

BW importance

Bicuspid tooth

Necrotic #8 treatment

Finding MB2 / MB3

Deep in a canal

Broken file retrieval

Molar cases

Pushed over apex

MB2 and palatal canal

Long lower third

Veneer cases

CT Implant surgury

Weird Anatomy

Apical trifurcation

Canal and Ultrasonics

Cotton stuffed chamber

Pulp floor sandblasting

Silver point removal

Difficult acute curve

Marked swelling

5 canaled premolar

Sealer overextension

Complex anatomy

Secondary caries

Zygomatic arch

Confluent mesials

LL 1st molar (#19)

Shaping vs Cleaning

First bicuspid

In Vivo mesial view

Inaccesible canals

Premolar 45

Ortho and implant


Lateral incisor


Churning irrigant

Cold lateral

Tipped to lingual

Acute pulpitis images

Middle distal canal

Silver point

Crown preparation

Epiphany healing

Weird anatomy

Dual Xenon

Looking for MB2

Upper molar resorption

Acute apical abcess

Finding MB2

Gingival inflammation

Irreversible pulpitis

AG BU ortho band

TF Files

using TF files

Broken bur

Warm technique

Restorative prognosis

Tooth # 20 and #30

Apical third

3 canal premolar

Severe curvature

Interesting anatomy

Chamber floor

Zirconia crown

Dycal matrix

Cracked tooth

Tooth structure loss

Multiplanar curves