Curved canals and fracture

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Curved canals and fracture - Courtesy ROOTS

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From: Bojidar Kafelov
To: ROOTS
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 Radioluscency Lateral incisor Obturation 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