Cuspal movement and microleakage in premolar teeth restored with a packable composite cured in bulk or in increments

Abbas, Ghassan Ali; Fleming, Garry J.P.; Harrington, E.; Shortall, A.C.; Burke, F. J. T.

doi:10.1016/s0300-5712(02)00121-5

Cited by 166 publications

(133 citation statements)

References 17 publications

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“…However, the incremental technique has a number of drawbacks, which include bond failures between increments due to contamination, the creation of voids, the more time required to place and polymerize each layer, and the difficulty in placement because of limited access during the conservative preparations. 6 In an attempt to overcome problems stemming from the layering technique and to simplify the restoration process, manufacturers have worked to develop a composite resin that can be placed in bulk with an increased curing depth. For this purpose, a new resin-based composite material, bulk-fill composite, has been introduced to the market in recent years.…”

Section: Introductionmentioning

confidence: 99%

Water sorption and solubility of bulk-fill composites polymerized with a third generation LED LCU

Misilli

Gönülol

2017

Braz. oral res.

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Section: Introductionmentioning

confidence: 99%

Water sorption and solubility of bulk-fill composites polymerized with a third generation LED LCU

Misilli

Gönülol

2017

Braz. oral res.

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“…Zorzin et al [18] proposed that the optimum curing of a material can only be considered should there exist no decrease below 80% of micro-hardness with increasing material depth. The filler size and content of dental composites affect the depth of light penetration and it has a direct relationship to the depth of cure [19]. The additional modifications do change the filler loading as well as the viscosity and should be considered when indications for these modified materials are sought.…”

Section: Microhardness Of the Materials As Potential Fissure Sealantsmentioning

confidence: 99%

Bio-Active Restorative Materials as Alternative Pit and Fissure Sealants in Pediatric and Preventative Dentistry: In Vitro Investigation

Perchyonok¹,

Mulder²

2017

JDHODT

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Fissure sealants are recommended to be applied soon after the tooth eruption, mainly at the level of the first permanent molars. The additional benefits of the application of bioactive fissure sealant materials lies in the build-in functionality of these materials to chemical attack in oral cavity as well as additional antibacterial action. IntroductionIt has been more than 40 years since the pit and fissure sealants were first used clinically. During this time, pit and fissure sealants have been shown to be effective in reducing the risk of occlusal caries, [2] and their success largely depends on the long term retention and tight micromechanical adhesion to enamel surfaces [3]. Resin based sealants can be classified as AbstractBackground: It has been more than 40 years since the pit and fissure sealants were first used clinically. During this time, pit and fissure sealants have been shown to be effective in reducing the risk of occlusal caries. Aim:The aim of the investigation is to further develop and evaluate a versatile designed chitosan based bio-active materials on for use as bonding free fissure sealant/fissure protectors on permanent dentition and evaluate remineralization/ demineralization capacity of the materials through pH cycling, as well as shear bond strength etch and no etch prototype as well as measurement of Vickers hardness of the newly designed materials and compare the property with the commercially available standard. Results:In general there was an increase in bond strength of the enamel treated with the modified Premise containing nanodiamond: chitosan materials compared to the bond strength of the conventionally bonded teeth. It is seen that release of phosphorus into the dematerializing solution (i.e. loss of phosphorus from the samples) showed larger amplitude (from 600.2mg to 101.3 mg) than the uptake of phosphorus by the samples from the re-mineralizing solution (from 125.2 mg to 66.1 mg). Therefore, the treatment with chitosan seems to act more on the demineralization of tooth enamel with little effect on the remineralization process. Regarding the net phosphorus loss (net P loss), it can be seen that net demineralization occurs in all cases. However, the net amount of phosphorous released by the control group samples was significantly higher than those groups treated with chitosan. The net P loss for the control group was 475 mg of P, whereas the groups containing chitosan had a net P loss in the range of 30-182 mg. When a 1mm layer is assessed all the materials including the Premise control indicated a conversion of above 96%, which is the upper limit of the conventional fissure sealant material which makes the newly designed bioactive materials suitable for the application as fissure sealant materials. The important aspect of any newly designed/ developed restorative material is cytotoxicity as Grobler et. al [1] investigated the cytotoxic effect of nanodiamonds and also the effect of the incorporation in a dental material (Premise), who found a higher shear bond strength (p < ...

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“…11,14,15 Each increment was cured for 20 seconds as per the manufacturer's instructions. The occlusal aspect of the restorations was carved to approximate the normal occlusal anatomy of an upper premolar tooth.…”

Section: Restorative Proceduresmentioning

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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Cuspal movement and microleakage in premolar teeth restored with a packable composite cured in bulk or in increments

Cited by 166 publications

References 17 publications

Water sorption and solubility of bulk-fill composites polymerized with a third generation LED LCU

Water sorption and solubility of bulk-fill composites polymerized with a third generation LED LCU

Bio-Active Restorative Materials as Alternative Pit and Fissure Sealants in Pediatric and Preventative Dentistry: In Vitro Investigation

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

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