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the major factorsinfluencepolymerization shrinkage
better control ... the factorsinfluencepolymerization shrinkage
dentists ... margin discrepanciesresultfrom polymerization shrinkage
when microleakage occursresultingfrom polymerization shrinkage
The composition of resin matrix of a restorative material ... the factorsinfluencethe polymerization shrinkage
polymerization of the casting resin on the substrate plate results in stresses in the laminate(passive) caused bythe polymerization shrinkage
the polymerizable material(passive) caused bythe polymerization shrinkage
The restorations thicknesssignificantly influencespolymerization shrinkage
a composite resin restoration to seal at its interface with unetched tooth structuresresultingfrom polymerization shrinkage
Its shorteningcould resultin polymerization shrinkage
application of light or heat(passive) caused bythe polymerization shrinkage
the admixture of particles(passive) was influenced byThe polymerization volumetric shrinkage
monomer molecules ... the polymerization processresultsin polymerization shrinkage
the use of multiple materials with a common resinous base but with different chemical - physical characteristics with the aim to compensate for any gapresultsfrom polymerization shrinkage
the stressresultingfrom polymerization shrinkage
LPAs are mixed with unsaturated polyester resinto preventshrinkage during polymerization
Cuspal deflectionresultingfrom polymerization shrinkage
technique Inadequate cure of resin - based restorations results in inadequate degree of conversionleadsto polymerization shrinkage
Inherent in the composites themselvesoriginatingfrom the polymerization shrinkage
forcesresultingfrom polymerization shrinkage
at least two ports located at the proximal end 112 of the insertion catheter 101 , the ports sufficiently designed to attach with various co - components of the photodynamic bone stabilization system , including , but not limited to , a container or syringe for delivering a light - sensitive liquid through the insertion catheter 101 and up into the expandable portion 200 , a light - conducting fiber for delivering light energy to expandable portion 200 , and a syringe or hose for delivering air or other fluids to the expandable portion 200to substantially preventpolymerization shrinkage
temperature decrease after the maximum temperature is reached(passive) caused bypolymerization and shrinkage
curing resin composites(passive) caused bypolymerization shrinkage
premolarsresultingfrom c2mposite polymerization shrinkage
Silorane monomers require the potential reactivity of the epoxy groupto preventpolymerization shrinkage
polymerization of the organic binder componentleadsto polymerization shrinkage
A thin layer of flowable composite is placed in the gingival box in increments of no more than 1 mm in thicknessto preventany polymerization shrinkage
The reaction and the by - productcan leadto polymerization shrinkage
the high C- factor ( the ratio of bonded to unbonded surface area(passive) caused bypolymerization shrinkage
Configuration Factor ( C - Factor ) must be reducedto preventpolymerization shrinkage as possible
direct resin filling(passive) caused bypolymerization shrinkage
Ethyl Alcohol ( byproductcausespolymerization shrinkage
increased vertical dimension at occlusion ( VODresultin : a.136.compensates for polymerization shrinkage
some shrinkage stresses in the composite and in the toothcausessome shrinkage stresses in the composite and in the tooth
mechanical and thermal stressescreatemechanical and thermal stresses
Eliminates internal stresses(passive) caused byEliminates internal stresses
Figure 10.22 Microgap(passive) caused byFigure 10.22 Microgap
in marginal leakage of the restorationmay resultin marginal leakage of the restoration
to marginal gap formationleadingto marginal gap formation
less marginal leakage between tooth and restorationresultingless marginal leakage between tooth and restoration
possible gaps(passive) created bypossible gaps
When marginal debonding occurs , concentrated stresses(passive) provoked byWhen marginal debonding occurs , concentrated stresses
contraction stresscausescontraction stress
the high stress(passive) caused bythe high stress
marginal leakage in the interface of tooth and restoration , which can result in secondary cariesmay causemarginal leakage in the interface of tooth and restoration , which can result in secondary caries
in internal stresses to the tooth , weak or leaky margins , and poor contacts between t teethcan resultin internal stresses to the tooth , weak or leaky margins , and poor contacts between t teeth
significant stress in the surrounding tooth structurecan createsignificant stress in the surrounding tooth structure
contraction stresses which in turn may cause microleakage and subsequently restoration failure.[1createscontraction stresses which in turn may cause microleakage and subsequently restoration failure.[1
tension in the seal itself , which will lead to the formation of cracks on the toothcan causetension in the seal itself , which will lead to the formation of cracks on the tooth
in cracking of the tooth structurecan resultin cracking of the tooth structure
some clinical problems such as postoperative sensitivity , fracture of enamel or tooth due to cuspal deflection , and the open margins which may result in microleakage and recurrent cariescan causesome clinical problems such as postoperative sensitivity , fracture of enamel or tooth due to cuspal deflection , and the open margins which may result in microleakage and recurrent caries
residual tensile stresses in the dentin around the cavity and in the buccal and lingual enamelcausesresidual tensile stresses in the dentin around the cavity and in the buccal and lingual enamel
to gaps at the interface , tooth and composite fractures , and postoperative sensitivitymight leadto gaps at the interface , tooth and composite fractures , and postoperative sensitivity
from the low elastic modulus of the materials and the low C - factor of the “ preparationresultingfrom the low elastic modulus of the materials and the low C - factor of the “ preparation
a marginal gap at tooth - restoration interface , which affects the long - term success of restorations[10can causea marginal gap at tooth - restoration interface , which affects the long - term success of restorations[10
a plethora of problems for patients and dentists.3,5,6 Marginal leakage(passive) is ... caused bya plethora of problems for patients and dentists.3,5,6 Marginal leakage
to marginal gap and subsequent marginal microleakage at enamel - adhesive interfaceleadsto marginal gap and subsequent marginal microleakage at enamel - adhesive interface
in exposing the internal structures of the toothcan resultin exposing the internal structures of the tooth
in the microleakage at tooth restoration interfaceresultingin the microleakage at tooth restoration interface
a gap between the material and the tooth structureoriginatesa gap between the material and the tooth structure
in marginal gaps and subsequent recurrent cariesresultsin marginal gaps and subsequent recurrent caries
in recurrent caries ... increased marginal leakage , and post - placement sensitivity.18 Interproximal contour and contacts are also harder to develop properly with this materialmay resultin recurrent caries ... increased marginal leakage , and post - placement sensitivity.18 Interproximal contour and contacts are also harder to develop properly with this material
to gap formation at the resin - tooth interfacecan leadto gap formation at the resin - tooth interface
significant stress in tooth structure leading to bond failure in spite of a good adhesivecreatessignificant stress in tooth structure leading to bond failure in spite of a good adhesive
stress at the tooth - restoration interface as the elastic modulus of the restorative resin increases during light activationcausesstress at the tooth - restoration interface as the elastic modulus of the restorative resin increases during light activation
to several clinical problems , such as marginal discoloration , restoration fractures , solubility of the bonding system , and causing marginalleadsto several clinical problems , such as marginal discoloration , restoration fractures , solubility of the bonding system , and causing marginal
stresses that may be of enough magnitude to result in detachment of the resin from the dentin of the canal walls , opening a pathway for bacterial leakage ( 21 , 22createsstresses that may be of enough magnitude to result in detachment of the resin from the dentin of the canal walls , opening a pathway for bacterial leakage ( 21 , 22
tension in areas where the composite bonds with dental tissue , which results in micro - level gaps between the filling and dental tissuecausestension in areas where the composite bonds with dental tissue , which results in micro - level gaps between the filling and dental tissue
in gap formation along the tooth / restoration interfacecan resultin gap formation along the tooth / restoration interface
to the formation of a contraction gap at the tooth restoration interfacemay leadto the formation of a contraction gap at the tooth restoration interface
microtears or gaps if the technique and adhesion of the dentin bonding agent to the tooth is not strong enough to withstand the polymerization shrinkagecan createmicrotears or gaps if the technique and adhesion of the dentin bonding agent to the tooth is not strong enough to withstand the polymerization shrinkage
gaps between the composite and the tooth structure , which may result in a sensitivity , microleakage , enamel marginal cracks , and secondary caries after surgerycausesgaps between the composite and the tooth structure , which may result in a sensitivity , microleakage , enamel marginal cracks , and secondary caries after surgery
in v - shaped gap formation at the cervical margin due to questionable bonding and concentration of flexural stresses at the cervical region of tooth and inability of stiff composite resin material to flex with the flexion of tooth under occlusal loadingresultingin v - shaped gap formation at the cervical margin due to questionable bonding and concentration of flexural stresses at the cervical region of tooth and inability of stiff composite resin material to flex with the flexion of tooth under occlusal loading