Objectives of Obturation

Transcript Objectives of Obturation

Obturation: Lateral Compaction

Presented by: Josef Ma. Karlos S. Bringas, D.M.D., D.D.S., M.S.

Department of Endodontics

Objectives of Obturation

• Create a complete seal of the entire root canal system by eliminating all avenues of leakage from the oral cavity or the periradicular tissues into the root canal system.

• To seal within the system any irritants that cannot be fully removed during canal cleaning and shaping procedures.

2006 J.Bringas, DMD, DDS, MS

Medium Fine Finger Spreader 2006 J.Bringas, DMD, DDS, MS

Gutta Percha – Master Cones 2006 J.Bringas, DMD, DDS, MS

Iris Scissors 2006 J.Bringas, DMD, DDS, MS

Gutta Percha – Accessory Cones 2006 J.Bringas, DMD, DDS, MS

Medium Fine Accessory Cones 2006 J.Bringas, DMD, DDS, MS

Paper Points (absorbent points) 2006 J.Bringas, DMD, DDS, MS

Endodontic Cotton Pliers 2006 J.Bringas, DMD, DDS, MS

Mirror and Handle 2006 J.Bringas, DMD, DDS, MS

Handle with mm Ruler 2006 J.Bringas, DMD, DDS, MS

Spatula and Mixing Pad 2006 J.Bringas, DMD, DDS, MS

Endodontic Sealer 2006 J.Bringas, DMD, DDS, MS

Glick #1 Instrument 2006 J.Bringas, DMD, DDS, MS

Endodontic Pluggers (5/7 & 9/11) 2006 J.Bringas, DMD, DDS, MS

Completed C&S • The canal system should be properly tapered in a continuous funnel shape allowing debridement, irrigation and obturation.

2006 J.Bringas, DMD, DDS, MS

Completed C&S Note your FWL.

*FWL is 1mm short of patency length.

Example: • FWL=23mm 2006 J.Bringas, DMD, DDS, MS

Obturation • The canal is obturated to Final Working Length.

• Obturation

Length = FWL

2006 J.Bringas, DMD, DDS, MS

Obturation • The canal is obturated to Final Working Length.

• Obturation

Length = FWL

2006 J.Bringas, DMD, DDS, MS

Spreader Fit

• To check satisfactory apical cleaning and shaping before obturation.

• To see if there is enough room for compaction with the selected finger spreader. (size: medium fine MF) • Set rubber stop 1-2mm short of FWL.

2006 J.Bringas, DMD, DDS, MS

Spreader fit • Fit within 1-2mm of FWL.

• If not, more shaping is required because apical size and taper is inadequate.

2006 J.Bringas, DMD, DDS, MS

Master Cone Fit

• Select Master Cone size that corresponds to your MAF size.

• Ex. MAF size 30 • MC size should also be size 30.

2006 J.Bringas, DMD, DDS, MS

Master Cone Fit

• The Master Cone should seat to final working length.

• Obturation

length= FWL

2006 J.Bringas, DMD, DDS, MS

Check Master Cone (MC) Length 2006 J.Bringas, DMD, DDS, MS

23 Master Cone Fit • If MC is at FWL, you are ready to obturate.

2006 J.Bringas, DMD, DDS, MS

Master Cone is Long • Cut the Gutta Percha tip to correct the discrepancy to avoid overextension.

2006 J.Bringas, DMD, DDS, MS

Master Cone is Short • Cleaning and shaping is rechecked.

2006 J.Bringas, DMD, DDS, MS

MC is short • Reinsert MAF file.

• Sometimes, dentin filings prevents it from seating to FWL.

2006 J.Bringas, DMD, DDS, MS

Reshape

• Check to see if MAF goes to FWL.

• Go through hand filing procedure.

• Sometimes, repeating C&S with rotaries is necessary.

2006 J.Bringas, DMD, DDS, MS

Refit MC • After filing with the MAF to FWL, the selected Master Cone should fit to proper FWL also.

2006 J.Bringas, DMD, DDS, MS

Master Cone Fit

• The MC should have a definite apical resistance when MC is placed to FWL.

• The MC should exhibit “tugback” or resistance to removal.

2006 J.Bringas, DMD, DDS, MS

Mark the Master Cone to FWL 2006 J.Bringas, DMD, DDS, MS

Place MC in the canal system.

2006 J.Bringas, DMD, DDS, MS

Mark should correspond to reference point.

2006 J.Bringas, DMD, DDS, MS

Take a Radiograph • Master Cone 4 th of 6 • Show radiograph to instructor.

• Dry the canal and you are now ready to obturate.

2006 J.Bringas, DMD, DDS, MS

Mix the Sealer 2006 J.Bringas, DMD, DDS, MS

Sealer Placement 2006 J.Bringas, DMD, DDS, MS

2006 J.Bringas, DMD, DDS, MS

Lateral Compaction • Advance the spreader with a watch winding motion as pressure is applied in an apical direction.

2006 J.Bringas, DMD, DDS, MS

Lateral Compaction • Advance the spreader with a watch winding motion as pressure is applied in an apical direction.

2006 J.Bringas, DMD, DDS, MS

Lateral Compaction • Advance the spreader with a watch winding motion as pressure is applied in an apical direction.

2006 J.Bringas, DMD, DDS, MS

Lateral Compaction • Remove the spreader with the same watch winding motion.

2006 J.Bringas, DMD, DDS, MS

Lateral Compaction • Immediately insert a premeasured and coated MF accessory cone into the space created by the spreader.

2006 J.Bringas, DMD, DDS, MS

Lateral Compaction • Insert to resistance.

• This should be done as quickly as possible to prevent voids.

2006 J.Bringas, DMD, DDS, MS