Lecture 8 Lecture 8 Obturation of the RCS Obturation of the RCS DYD Samarawickrama DYD Samarawickrama 2007 2007 Note : Copyright material has been removed. Note : Copyright material has been removed.
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Lecture 8Lecture 8
Obturation of the RCSObturation of the RCS
DYD SamarawickramaDYD Samarawickrama
20072007
Note : Copyright material has been removed.Note : Copyright material has been removed.
Coronal seal
Root Canal Filling
Success of ObturationSuccess of Obturation
Quality of access cavity designQuality of access cavity design
Thorough Thorough cleaningcleaning and and shaping shaping of the RCSof the RCS
Well filled Root Canal SystemWell filled Root Canal System
Prevents percolation of periapical Prevents percolation of periapical exudate into the root canal space exudate into the root canal space Prevents rePrevents re--infectioninfectionCreates a favourable biologic Creates a favourable biologic environment for the process of environment for the process of tissue healingtissue healing
When to ObturateWhen to Obturate
Tooth is asymptomaticTooth is asymptomaticCanal is dryCanal is dryNo sinus tractNo sinus tractNo foul odourNo foul odourIntact temporary fillingIntact temporary filling
Root Canal Filling MaterialsRoot Canal Filling Materials
PastesPastesSemisolidSemisolid
PastesPastes
Zinc Oxide Zinc Oxide –– Eugenol sealersEugenol sealersCalcium hydroxide sealersCalcium hydroxide sealersSynthetic resinsSynthetic resinsEpoxy resinsEpoxy resinsAcrylic, polyethylene and Acrylic, polyethylene and polyvinyl resins polyvinyl resins
GrossmanGrossman’’s Sealers Sealer
PowderPowder Zinc oxideZinc oxideStabelyte resinStabelyte resinBismuth subcarbonateBismuth subcarbonateBarium sulphateBarium sulphateSodium borateSodium borate
LiquidLiquid EugenolEugenol
Zinc Oxide Sealer
Zinc Oxide Eugenol Sealers
Calcium Hydroxide SealersCalcium Hydroxide Sealers
Resin Based Sealers
Semi Semi -- solidsolid
Gutta PerchaGutta Percha
ResilonResilon
Gutta Percha Gutta Percha -- AdvantagesAdvantages
Adaptable and Adaptable and compactablecompactableSoftened by heat Softened by heat or solventsor solventsInert and tissue Inert and tissue toleranttolerantDimensionally Dimensionally stablestable
RadioRadio--opaqueopaqueWill not stain Will not stain tooth structuretooth structureEasily removed Easily removed from canalfrom canalNon allergenicNon allergenic
Gutta Percha Gutta Percha -- DisadvantagesDisadvantages
Lacks rigidity Lacks rigidity --> freeze > freeze --> rigid> rigidLacks adhesive qualityLacks adhesive qualityCan be displaced by pressureCan be displaced by pressure
Bonded ObturationBonded Obturation
ResilonResilon
EpiphanyEpiphanyRealSealRealSeal
Obturation TechniquesObturation Techniques
Lateral and Vertical CondensationLateral and Vertical CondensationThermafilThermafilMicrosealMicrosealObtura IIObtura IISystem BSystem BMiscellaneousMiscellaneous
Obturate in 3DObturate in 3D
Conventional radiographic viewConventional radiographic view
ObturationObturation
Radiographs do not show poor Radiographs do not show poor obturation in 3Dobturation in 3DTramlines might give a clueTramlines might give a clue
ObturationObturation
Examples of poor obturationExamples of poor obturation
HoweverHowever……..
The apical extent of root filling has The apical extent of root filling has significant influence on outcome:significant influence on outcome:–– Flush root fillings have higher success Flush root fillings have higher success
rates than short or long root fillingsrates than short or long root fillings–– Meta analyses 28 studiesMeta analyses 28 studies
Short> 2 mm short of the radiographic apex
Flush0 – 2 mm within the radiographic apex
LongExtruded beyond radiographic apex
Obturation TechniquesObturation Techniques
Lateral and Vertical CondensationLateral and Vertical CondensationThermafilThermafilMicrosealMicrosealObtura IIObtura IISystem BSystem BMiscellaneousMiscellaneous
Obturation TechniquesObturation Techniques
Lateral and Vertical CondensationLateral and Vertical CondensationThermafilThermafilMicrosealMicrosealObtura IIObtura IISystem BSystem BMiscellaneousMiscellaneous
Obturation TechniquesObturation Techniques
Lateral and Vertical Lateral and Vertical condensationcondensationThermafilThermafilMicrosealMicrosealObtura IIObtura IISystem BSystem BMiscellaneousMiscellaneous
Bonded ObturationBonded Obturation
ResilonResilon
EpiphanyEpiphanyRealSealRealSeal
ResilonResilon
Thermoplastic synthetic polymer Thermoplastic synthetic polymer root canal filling materialroot canal filling material
PrimerPrimerSealerSealerCore materialCore material
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