PowerPoint Presentation
PRESENTED BY :HAFSA JAMILROLL # DO563-142ND YEAR B.DS
OPERATIVE DENTISTRY PRESENTATION TOPIC: STEPS OF COMPOSITE
RESTORATION
Steps of restorationIsolationEtching /Conditioning Washing
/DryingBondingCuringDetermine shadeIncremental buildup & curing
of composite Finish/polish
IsolationComposite is a highly technique sensitive material
Slight contamination or procedural error spoils the durability
of the restoration
Perfect isolation of operating area is mandatory
The best isolation is rubber dam .
Etching /Conditioning Enamel Dentin
Both the tissues are etched with Phosphoric acid.
Enamel Etching To cut into the enamel surface through the action
of acid
After washing
Etchant 34- 37 % phosphoric acid
Liquid Gel
Applying Etchant Roughens the surface by removing calcium from
enamel .we apply etchant on enamel for 30 seconds and on dentine
for 15 seconds.
Washing and Drying Washing is performed with triple syringe for
5-10 seconds and then drying
BondingBonding agents are unfilled resins that flow into the
micro channels and form an interlocking system.
It is available in liquid form
Application of bondApply bonding agent with help of a small
brush
curing
20 seconds
Determine shade
LINER AND BASEIf after cavity preparation the remaining dentine
thickness (RDT) is between 0.5 and 1.5mm a resin modified glass
ionomer (RMGI) base is used. IF RDT is less than 0.5mm a calcium
hydroxide liner should be applied to the deepest aspect of the
preparation then protected with an RMGI base prior to adhesive
placement .
Incremental buildup & curing of compositeIt is important to
place the composite incrementally to maximize the polymerization
depth of cure and possibly to reduce the negative effects of
polymerization shrinkage.Cure each increment for 20 sec.
Finishing and polishing
Tungsten carbide finishing bur is used to contour the marginal
ridge
REFERENCE :Art and Science of OPERETIVE DENTISTRY
Sixth Edition
Page # 262, 263, 265.
Hope you all get it
