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Presented by:

Josef Ma. Karlos S. Bringas, D.M.D., D.D.S., M.S.

Department of Endodontics

Obturation: Lateral Compaction

http://www.udmercy.edu/

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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 canalsystem.

To seal within the system any irritants

that cannot be fully removed duringcanal cleaning and shaping procedures.

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Medium Fine Finger Spreader

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Gutta PerchaMaster Cones

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Iris Scissors

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Gutta PerchaAccessory Cones

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Medium Fine Accessory Cones

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Paper Points (absorbent points)

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Endodontic Cotton Pliers

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Handle with mm Ruler

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Spatula and Mixing Pad

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Endodontic Sealer

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Glick #1 Instrument

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Endodontic Pluggers (5/7 & 9/11)

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Completed C&S

The canal system

should be properly

tapered in a continuous

funnel shape allowingdebridement, irrigation

and obturation.

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Completed C&S

Note your FWL.*FWL is 1mm short of

patency length.

Example: FWL=23mm

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Obturation

The canal is

obturated to

Final Working

Length.

Obturation

Length = FWL

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Spreader Fit

To check satisfactory apical cleaning and

shaping before obturation.

To see if there is enough room for

compaction with the selected fingerspreader. (size: medium fine MF)

Set rubber stop 1-2mm short of FWL.

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Spreader fit

Fit within 1-2mm

of FWL.

If not, more

shaping is required

because apical size

and taper isinadequate.

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Select Master Cone

size that

corresponds to

your MAF size.

Ex. MAF size 30

MC size should

also be size 30.

Master Cone Fit

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The Master Cone

should seat to final

working length.

Obturation

length= FWL

Master Cone Fit

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Check Master Cone (MC) Length

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Master Cone Fit

If MC is at FWL, you are ready to

obturate.

23

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MC is short

Reinsert MAF file.

Sometimes, dentin

filings prevents it

from seating toFWL.

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Reshape

Check to see ifMAF goes to FWL.

Go through hand

filing procedure.

Sometimes,

repeating C&S with

rotaries is necessary.

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Refit MC

After filing with theMAF to FWL, the

selected Master

Cone should fit toproper FWL also.

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Master Cone Fit

The MC should have a definite apicalresistance when MC is placed to FWL.

The MC should exhibit tugback or

resistance to removal.

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Mark the Master Cone to FWL

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Mark the Master Cone to FWL

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Place MC in the canal system.

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Mark should correspond to reference point.

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Mix the Sealer

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Mix the Sealer

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Mix the Sealer

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Mix the Sealer

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Mix the Sealer

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Mix the Sealer

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Sealer Placement

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Sealer Placement

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Lateral Compaction

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Lateral Compaction

Advance the spreaderwith a watch winding

motion as pressure is

applied in an apical

direction.

Lateral Compaction

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Lateral Compaction

Advance the spreaderwith a watch winding

motion as pressure is

applied in an apical

direction.

Lateral Compaction

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Lateral Compaction

Remove the spreaderwith the same watch

winding motion.

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Lateral Compaction

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Lateral Compaction

Insert to resistance. This should be done as

quickly as possible to

prevent voids.

Lateral Compaction

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Repeat thisprocedure of finger

spreader insertion

alternated withaccessory cone

placement.

Lateral Compaction

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Lateral Compaction

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Repeat thisprocedure of finger

spreader insertion

alternated withaccessory cone

placement.

Lateral Compaction

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Lateral Compaction

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Do this until thecanal is obturated tothe cervical line.

Take a radiographat this time andevaluate fill.

This confirms

adequacy of theobturation.

p

Lateral Compaction

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p

If the obturation is satisfactory, theexcess gutta percha should be cut to the

CEJ level (bucco-lingual).

If obturation is not dense, or if voids are

present, remove all the cones and redo

the obturation process.

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Final Radiograph

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g p

Remove therubber dam clampand rubber dammaterial and take

the radiograph.

*In a real patient, atemporary restorationis placed beforerubber dam isremoved