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Second premolar retreatment - Courtesy ROOTS

The opinions and photographs within this web page are not ours. Authors have been
credited for the individual posts where they are -
From: Valeri Stefanov
Sent: Wednesday, August 18, 2010 10:46 PM
Subject: [roots] Huge single canal in lower second premolar

That is a lower right second premolar retreatment.

The RX before is deceiving and one could think it's just another canal.

Took out a single .02 gutta ( may be it was # 30 - a very tiny one ) 
placed inside, what appeared to be, a huge oval canal. Fortunately 
for me it was relatively easy this time to get through the
Russian red paste.

Rest was a lot of shaping with hand files up to #80.02. It was a lot 
of rinsing, too. Placed CaOH for one week at the end of first visit.

During second visit (today ) - removal of CaOH, rinsing again with 
lot of 2.5 % Hypo, 2 ml 17 % EDTA, again 4 ml Hypo and finished 
rinsing with 4 ml 3 % hydrogen peroxide. Filling was done with 
bioceramic sealer iRootSP - first used  Lentulo filler at 300 turns 
to get the sealer inside such a big canal, then used hand spreader 
to disperse the bioceramic on canal's walls and finally "condensed" 
the ceramic by inserting two gutta percha posts - one # 35.06 and 
one # 30.06 - tips reaching one mm short of  WL. Final mm of this 
# 80 canal is filled with bioceramic only.

Lateral view gives some more information on the extend of 
PA lesion imho. - Valeri Stefanov

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