Post on 14-Apr-2018
transcript
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Obturation
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FINAL WORKING LENGTH CHECK
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OBTURATIONCleaning and Shaping More Important Than
Obturation (taking out more important than
putting in)
If Problems with Obturation, Work on Cleaning
and Shaping!!!
Objective is to create a seal from the coronal
to the apical (FINAL RESTORATION MOST
IMPORTANT)
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Ideal RequirementsNo material has all
Easily introduced Liquid or semisolid and become solid
Seal laterally and apically
Not shrink
Impervious to moisture
Bacteriostatic/cidal
Not stain tooth
Not irritate periapical tissues
Easily removed
Sterile or sterilizable
Radiopaque (SEXY)!!
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WHEN NOT TO OBTURATE?
Continued purulence orexudate in the canals
Significant swelling/infection
Unable to complete treatment same day
(complicated case, pain problems)You cant get them numb, or came late, you
just relief the pain.
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TYPES OF OBTURATION MATERIALS
SolidMaterials
Gutta PerchaBEST
Silver PointsCarrier-Based Systems
Semisolids(NOT RECOMMANDED)
Pastes
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TYPES OF OBTURATION MATERIALS
Pastes
1- Difficult to control length (easy to overfill)
2- Poor seal (inconsistent seal)3- May shrink
4- May contain toxic materials
Do not use paraformaldehyde containing
materials (AAE Position Statement)
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TYPES OF OBTURATION MATERIALS
Silver Points
No longer recommended for use because of
problems with corrosion by-products
Do NOT need to be retreated unless pathosis or
if needed forrestoration (e.g. needs postspace)
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TYPES OF OBTURATION MATERIALS
Carrier-Based Systems
Gutta Percha Lollipop (plastic carrier coated with
gutta percha)
Requires oven heating
Problems arise from forcing to length without
adequate cleaning and shaping (and difficult to
retreat)
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CARRIER-BASED SYSTEMS
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TYPES OF OBTURATION MATERIALS
Gutta Percha
Mostly Zinc-Oxide (approx 75%) Gutta Percha
(20%)Filling material (5%)
Standardized and Conventional Cones
Variability in gutta percha cone sizing (not all #30
cones are the same size)**
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Made from the sap of a Malaysian rubber tree, the
gutty replaced feathery balls leather pouches
stuffed with goose down. Old Tom Morris smacked
gutties with glee, but his boss, Allan Robertson, the
first full-time golf pro, called them "the filth" and paid
caddies a penny apiece for gutties, which Robertson
burned in his St. Andrews fireplace.
http://www.golf.com/photos/equipment-game-changers/1850s-gutta-percha-ball
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GUTTA PERCHA
Accessory cones
Regular 0.2
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TYPES OF OBTURATION MATERIALS
Sealers
Grossmans Ideal Characteristics
Tissue tolerance
No shrinkage with setting
Slow setting time
Adhesiveness (create a bond) They bond to the tooth not
to gutta percha
Radiopaque--SEXY
No staining Soluble (in a specific solvent)
Not soluble in oral fluids
Antibacterial
Creates a good seal
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TYPES OF OBTURATION MATERIALS
Sealers4 major types:
ZOE (zinc oxide eugenol)*
Plastics
Glass Ionomer
Calcium Hydroxide Containing
(CaOH is an antibacterial which dr
will put inside the tooth.
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OBTURATION TECHNIQUES
Cold lateral condensation* - gold standard,
safestand easiesttechnique
Other techniques in book
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LAB OBTURATION VIDEO
See lab/clinic handout for written basic steps
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MASTER CONE CHECK
Instruments/Materials Needed:
Paper Points
Endodontic Files
Sealer
Gutta Percha
Spreaders
Pluggers
Master Cone Radiograph
Hemostats
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MASTER CONE CHECK
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OBTURATION
Instruments/Materials Needed:
Sealer
Gutta PerchaSpreaders
Pluggers
Glick
Electronic Heat InstrumentAlcohol Pellets
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OBTURATION
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SUPERENDO ALPHA2 (B&L BIOTECH)
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DIAPEN (DIADENT)
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DIAPEN
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TOUCH N HEAT (SYBRON ENDO)
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SYSTEM B (SYBRON ENDO)
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TEMPORARY OR FINAL RESTORATION
Instruments/Materials Needed:
Final Radiograph (double-pack)
Temporary restoration material (Cavit or IRM)OR Permanent restoration
Glick
MirrorExplorer
Floss
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TEMPORARY OR FINAL RESTORATION
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