Microleakage of compomer Class V restorations: Effect of load cycling, thermal cycling, and cavity shape differences

Hakimeh, Samer; Vaidyanathan, J.; Houpt, M; Vaidyanathan, T.K.; Hagen, Stanley Von

doi:10.1016/s0022-3913(00)80012-8

Cited by 69 publications

(56 citation statements)

References 12 publications

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“…Leinfelder 15) suggested reshaping the axial wall to reduce the stress distribution of the notch-shaped lesion. In recent years, there has been increasing interest in understanding the effect of minimal cavity preparation by retaining the V-shape and alternative approaches of preparing the cavity to U-shape for improved retention 16) . In the oral cavity, teeth and restorations are exposed to various overloads as a result of biting forces that cause variable patterns of stress in dental tissues.…”

Section: ⅰ Introductionmentioning

confidence: 99%

Stress distribution of Class V composite resin restorations: A three-dimensional finite element study

Park

Hur

Kim

2008

J Korean Acad Conserv Dent

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This study was to investigate the influence of composite resins with different elastic modulus, cavity modification and occlusal loading condition on the stress distribution of restored notch-shaped noncarious cervical lesion using 3-dimensional (3D) finite element (FE) analysis.The extracted maxillary second premolar was scanned serially with Micro-CT. The 3D images were processed by 3D-DOCTOR. ANSYS was used to mesh and analyze 3D FE model. A notch-shaped cavity and a modified cavity with a rounded apex were modeled. Unmodified and modified cavities were filled with hybrid or flowable resin. After restoration, a static load of 500N was applied in a point-load condition at buccal cusp and palatal cusp. The stress data were analyzed using analysis of principal stress.The results were as follows: 1. In the unrestored cavity, the stresses were highly concentrated at mesial CEJ and lesion apex and the peak stress was observed at the mesial point angle under both loading conditions. 2. After restoration of the cavity, stresses were significantly reduced at the lesion apex, however cervical cavosurface margin, stresses were more increased than before restoration under both loading conditions. 3. When restoring the notch-shaped lesion, material with high elastic modulus worked well at the lesion apex and material with low elastic modulus worked well at the cervical cavosurface margin. 4. Cavity modification the rounding apex did not reduce compressive stress, but tensile stress was reduced. [J Kor Acad Cons Dent 33(1):28-38, 2008] Key words : Cervical lesion, class V lesion, composite resin, finite element analysis, stress distribution

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Section: ⅰ Introductionmentioning

confidence: 99%

Stress distribution of Class V composite resin restorations: A three-dimensional finite element study

Park

Hur

Kim

2008

J Korean Acad Conserv Dent

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“…Thermocycling is a widely acceptable method used in microleakage studies to simulate the effects that restorations are subjected to in the mouth. 20,24,25 Some researchers, however, consider it a questionable method since the temperatures used may not be the real temperatures of hot and cold beverage tolerated by patients. [26][27][28] The results of the present study highlighted that microleakage was similar between the teeth restored without RMGIC liner.…”

Section: Discussionmentioning

confidence: 99%

Polymerization Shrinkage of Different Types of Composite Resins and Microleakage With and Without Liner in Class II Cavities

Karaman

Özgünaltay

2014

Operative Dentistry

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The use of RMGIC liner with composite resin restorations reduces microleakage. The silorane-based composite showed lower volumetric polymerization shrinkage than methacrylate-based composites. SUMMARYAim: To determine the volumetric polymerization shrinkage of four different types of composite resin and to evaluate microleakage of these materials in class II (MOD) cavities with and without a resin-modified glass ionomer cement (RMGIC) liner, in vitro.Materials and Methods: One hundred twentyeight extracted human upper premolar teeth were used. After the teeth were divided into eight groups (n=16), standardized MOD cavities were prepared. Then the teeth were restored with different resin composites (Filtek Supreme XT, Filtek P 60, Filtek Silorane, Filtek Z 250) with and without a RMGIC liner (Vitrebond). The restorations were finished and polished after 24 hours. Following thermocycling, the teeth were immersed in 0.5% basic fuchsin for 24 hours, then midsagitally sectioned in a mesiodistal plane and examined for microleakage using a stereomicroscope. The volumetric polymerization shrinkage of materials was measured using a video imaging device (Acuvol, Bisco, Inc). Data were statistically analyzed with Kruskal-Wallis and MannWhitney U-tests.Results: All teeth showed microleakage, but placement of RMGIC liner reduced microleakage. No statistically significant differences were found in microleakage between the teeth restored without RMGIC liner (p.0.05). Filtek Silorane showed significantly less volumetric polymerization shrinkage than the methacrylate-based composite resins (p,0.05).Conclusion: The use of RMGIC liner with both silorane-and methacrylate-based composite resin restorations resulted in reduced microleakage. The volumetric polymerization

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“…5,6 Microleakage is the leading cause of replacing bonded restorations and is responsible for roughly 30% or more of direct restorations being replaced. 7,8 This can be caused by shrinkage stress, inadequate wetting or adaptation of the material along the cavity wall, and gaps formed between the material and the tooth caused by thermally and mechanically induced stresses. 7 Microleakage can result in staining of restoration margins, recurrent decay, pulpal sensitivity or damage, and further breakdown of certain restorative materials.…”

Section: Introductionmentioning

confidence: 99%

“…7,8 This can be caused by shrinkage stress, inadequate wetting or adaptation of the material along the cavity wall, and gaps formed between the material and the tooth caused by thermally and mechanically induced stresses. 7 Microleakage can result in staining of restoration margins, recurrent decay, pulpal sensitivity or damage, and further breakdown of certain restorative materials. 7 Primary benefits of resin-modified glass ionomer (RMGI) materials over traditional GI materials are their improved translucency, finishability at time of placement, and greater stability regarding imbibition/dehydration.…”

Section: Introductionmentioning

confidence: 99%

“…7 Microleakage can result in staining of restoration margins, recurrent decay, pulpal sensitivity or damage, and further breakdown of certain restorative materials. 7 Primary benefits of resin-modified glass ionomer (RMGI) materials over traditional GI materials are their improved translucency, finishability at time of placement, and greater stability regarding imbibition/dehydration. 2,9,10 RMGI materials offer reasonable esthetic qualities along with relative ease of handling; low coefficient of thermal expansion; and chemical bonding to cementum, dentin, and enamel as well as to plastics and nonprecious metals.…”

Section: Introductionmentioning

confidence: 99%

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Experimental Initial Partial Polymerization Method for Fuji II Placement Evaluated for Microleakage With/Without Fuji Coat

Fletcher

Roggenkamp

2013

Operative Dentistry

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Sometimes it can be more efficient to impart greater viscosity to resin-modified glass ionomer restorative material for condensability during placement. SUMMARYPurpose: This laboratory study evaluated an experimental 1-second initial partial polymerization (IPP) technique using Fuji II LC vs the manufacturer's standard placement (control), both with and without Fuji Coat, relative to microleakage.Methods: Class V restorative preparations were placed on the buccal and lingual aspects of 30 permanent, caries-free and restorationfree, third molar teeth. Fuji II LC restorations were placed either following manufacturerspecified guidelines or IPP for 1 second prior to contouring and full light curing. Half of the restorations were placed using the IPP experimental technique and half of the teeth were finished using Fuji Coat LC. Following thermocycling, specimens were sectioned and dye penetration was measured. SPSS 16 was used for statistical analysis (p,0.05).Results: Mean microleakage results: experimental/varnish (0.08 6 0.15 mm), control/varnish (0.17 6 0.35 mm), experimental/nonvarnish (0.33 6 0.33 mm), and control/nonvarnish (0.58 6 0.47 mm). Univariate analysis of variance demonstrated significantly less microleakage for the experimental technique (p,0.001), use of finishing varnish (p,0.001), and the combination of experimental/varnish (p=0.013).

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Microleakage of compomer Class V restorations: Effect of load cycling, thermal cycling, and cavity shape differences

Cited by 69 publications

References 12 publications

Stress distribution of Class V composite resin restorations: A three-dimensional finite element study

Stress distribution of Class V composite resin restorations: A three-dimensional finite element study

Polymerization Shrinkage of Different Types of Composite Resins and Microleakage With and Without Liner in Class II Cavities

Experimental Initial Partial Polymerization Method for Fuji II Placement Evaluated for Microleakage With/Without Fuji Coat

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