* In the instance of carrier removal, select the appropriately tapered ProTaper
be carried sufficiently deep into the canal and lateral to the carrier. A long engagement zone will more
effectively auger the entire length of the carrier out of the canal.
Soluble Zinc oxide – Eugenol based Paste Removal
•
When the rotary removal method is utilized, select the lowest speed (250-300 RPM) that will
effectively engage and remove obturation material from the canal.
•
Flood the pulp chamber with the appropriate solvent (DMS IV from Dentsply Maillefer) and probe the
canal orifice with an explorer to check if the paste has been effectively softened.
•
Without engaging dentin, gently press the spinning ProTaper
short pecking motion to extract material out of the canal. Never engage ProTaper
curvature.
•
Remove the D1 file frequently, inspect the blades for obturation material and clean the debris from the
flutes.
•
Continue with the D1 file, or the ProTaper
walls, until paste is removed from the coronal one-third of the canal.
•
Select the ProTaper
the middle one-third of the canal. Use a brushing outstroke motion to remove material from the canal
walls.
•
When appropriate, choose the ProTaper
positioned paste material out of the apical one-third of the canal.
•
Continue with the D3 file as long as the flutes of the instrument, upon removal, are loaded with
obturation material.
•
When the obturation material is short of the canal terminus, use small sized hand files in the presence
of a viscous chelator to negotiate and secure the rest of the canal.
•
After assessing the glide path, select either manual or rotary NiTi ProTaper
the canal.
DFU ProTaper® Universal Retreatment Kit F19 02 89.X/ 04 / 2006 updated 04/2009
Retreatment file that fits passively between the dentinal
®
D2 file and repeat the same pecking action to extract obturation material from
®
D3 file and, in the same way auger the more deeply
®
DENTSPLY MAILLEFER
Retreatment file that can
®
D1 file into the material and use a
®
D1 around a canal
®
files to shape and finish
®
1338 Ballaigues
Switzerland
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