Endodontic Materials II Dr. C Pantera.pdf

Carole T. Pantera, DDS, MS
University at Buffalo

Obturation Materials
• Gutta Percha
• Sealer
• Solid Core Systems

Obturation Materials
• Ideal Filling Material
–Easily y
introduced
–Becomes solid
–Seals laterally and apically
–No shrinkage
–Impervious p
to moisture

Obturation Materials
• Ideal Filling Material
–Bacteriostatic
–Not stain tooth
–Not irritate periapical tissues
–Easily removed
–Sterile or sterilizable
–Radiopaque
pq

Obturation Materals
• Gutta Percha
–Majority j y of requirements
• Does shrink
• Not rigid
• Displaced under pressure

Gutta Percha
• Palaquium gutta tree
• Trans‐isomer of rubber
• Three forms
–Alpha
l h
–Beta
–amorphous

• Beta form
Gutta Percha
–Most traditional points
• Alpha form
–Natural Form
–When heated
• 42 –49 degrees C
• Amorphous melt
–53
‐59 degrees C

Gutta –Percha
• Photograph Boxes
• Golf balls
• Combs
• Jewelry
• Electrical insulation

Gutta Percha
• Used in root canals >150 years
–1847 Hill’s Stopping
–1887 first points
(SS White)

• Standardized d points
– ISO Sizes 15‐140140
Gutta Percha
• Non‐standardized points
– Extra‐fine through extra‐large
• Specific to technique
– i.e. Protaper points

Gutta Percha
• Composition of points
–19
– 22% gutta percha
–59‐75% zinc oxide
–Waxes, coloring, metallic oxides,
Antioxidants

Obturation Materials
• Sealers
–Essential
• Create seal
• Fill irregularities
• Increase adhesion

• Ideal popetes
properties
Sealers
– Bicompatible
– Adhere to walls
– Radiopaque
– Impermeable to fluids
– Dimensionally stable
– Antiseptic
– Easily manipulated
– Not discolor tooth

Sealers
• Zinc oxide‐eugenol
eugenol
–Kerr
• Calcium hydroxide
• Resins
• Glass ionomers
• Silicones

Obturation Devices
• System B
• Obtura

Obturation Devices
• System B
–For DOWNPACK
–“Continuous Wave”
–Combination heat carrier
and plugger

Obturation Devices
• System B
–Four tips
• Need to be pre‐fit
–Dead soft metal
–Heating coil inside

Obturation Devices
• Obtura
–For BACKFILL
–Heats
gutta percha pellets
–Injects softened GP

Obturation Devices
• Obtura
–Tips replaceable
• Very delicate
–Unit must be HOT to
reload or change needle!

Obturation Devices
• Solid Core Systems
–Thermafil
• First marketed
• Solid plastic carrier
• Gutta percha coating
• Sizer
• Need sealer

Obturation Devices
• Solid Core Systems
s
– Advantages
• Rapid
• Negotiate curves
– Disadvantages
• Lack of apical control
• GP may strip off
• Post placement
• Retreatment
• *Poor C & S*

Temporization Materials
• Cavit
• IRM
• TERM

Temporization Materials
• Cavit
–Zinc oxide, calcium sulfate,
glycol acetate, polyvinyl acetate
resins, polyvinyl chlorine acetate,
triethanolamine
‐Premixed
‐CLASS 1 ONLY

Temporization Materials
• Cavit
–Sets with moisture
–Sets over time
–EXPANDS on setting
–Need minimum
3.5mm thickness

Temporization Materials
• IRM
–ZOE with polymethylmethacrylate
y methacrylate
–No bonding
–Compressive strength
–Antibacterial
–Class 2 access

Temporization Materials
• TERM
–Single g
component resin
–Light cured
–Shallow access cavities

Thank You