Fracture strength and fracture patterns of root filled teeth restored with direct resin restorations

Taha, Nessrin A.; Palamara, Joseph E.A.; Messer, HH

doi:10.1016/j.jdent.2011.05.003

Cited by 83 publications

(79 citation statements)

References 38 publications

(78 reference statements)

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“…Almost all teeth showed debonding at the tooth-restoration interface (predominantly at the buccal margin), with fracture initiating at the buccal line angle of the proximal box and extending obliquely to subcrestal fracture of the buccal cusp. The pattern of failure was identical to that reported previously, 23,33,34 although fracture patterns vary among studies depending on tooth mounting and the direction and location of occlusal loading. 7,35 Separate debonding was a common event before fracture in the three groups with both types of loading, similar to the findings of Hatta and others 36 ; its occurrence ranged from 37% in the open laminate static load group to 62% in the composite groups and up to 75% in the fatigue-cycled open laminate group and the liner groups.…”

Section: -29supporting

confidence: 84%

“…The selected teeth were mounted vertically in epoxy resin in polyvinyl chloride plastic rings without a simulated periodontal ligament, since in a previous study, 23 a simulated periodontal ligament (PDL) did not influence fracture strength under these conditions of testing. The epoxy resin mounting extended to 2 mm below the cemento-enamel junction (CEJ) to simulate the alveolar bone level.…”

Section: Tooth Selection and Mountingmentioning

confidence: 99%

“…Extensive MOD cavities, plus endodontic access with the proximal axial walls removed, were prepared as previously described, 23 using a tungsten carbide round-ended fissure bur (Komet H21R, Brasseler, Lemgo, Germany) in a high-speed handpiece with water coolant. The bucco-lingual width of the occlusal isthmus was one-third of the width between buccal and lingual cusp tips, and the bucco-lingual width of the proximal box was one-third of the buccolingual width of the crown.…”

Section: Cavity Preparationsmentioning

confidence: 99%

“…The only modification in our protocol was reducing the preconditioning load to 100 N and then increasing it in 50-N increments, based on the mean fracture loads of comparable groups in a previous experiment with ramped loading. 23 The earlier studies mentioned above used stepped fatigue testing as the standard protocol for testing and did not compare the effect of fatigue on fracture strength compared to static loading.…”

Section: -29mentioning

confidence: 99%

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Fracture Strength and Fracture Patterns of Root-filled Teeth Restored With Direct Resin Composite Restorations Under Static and Fatigue Loading

Taha

Palamara

Messer

2014

Operative Dentistry

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Root-filled teeth suffer substantial loss of tooth structure from restorative and endodontic procedures. A direct adhesive restoration will help preserve the remaining tooth structure as long as it provides enough strength and marginal integrity. SUMMARYAim: To assess fracture strength and fracture patterns of root-filled teeth with direct resin composite restorations under static and fatigue loading.Methodology: MOD cavities plus endodontic access were prepared in 48 premolars. Teeth were root filled and divided into three restorative groups, as follows 1) resin composite; 2) glass ionomer cement (GIC) core and resin composite; and 3) open laminate technique with GIC and resin composite. Teeth were loaded in a servohydraulic material test system. Eight samples in each group were subjected to stepped fatigue loading: a preconditioning load of 100 N (5000 cycles) followed by 30,000 cycles each at 200 N and higher loads in 50-N increments until fracture. Noncycled teeth were subjected to a ramped load. Fracture load, number of cycles, and fracture patterns were recorded. Data were analyzed using two-way analysis of variance and Bonferroni tests.Results: Fatigue cycling reduced fracture strength significantly (p,0.001). Teeth restored with a GIC core and a laminate technique were significantly weaker than the composite group (379656 N, 352667 N vs 490678 N, p=0.001). Initial debonding occurred before the tooth underwent fracture. All failures were predominantly adhesive, with subcrestal fracture of the buccal cusp.

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Section: -29supporting

confidence: 84%

Section: Tooth Selection and Mountingmentioning

confidence: 99%

Section: Cavity Preparationsmentioning

confidence: 99%

Section: -29mentioning

confidence: 99%

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Fracture Strength and Fracture Patterns of Root-filled Teeth Restored With Direct Resin Composite Restorations Under Static and Fatigue Loading

Taha

Palamara

Messer

2014

Operative Dentistry

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“…Composite resins have the advantage of bonding to residual coronal and root canal dentine, which may assist in strengthening the tooth [2,3] and offer an alternative technique for restoration of ETT [4]. Dual cure resin composites core materials with different viscosity are currently used within the canal for fibre posts cementation, to restore the structurally compromised ETT.…”

Section: Introductionmentioning

confidence: 99%

Influence of a polymerizable eugenol derivative on the antibacterial activity and wettability of a resin composite for intracanal post cementation and core build-up restoration

2016

Br Dent J

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. Influence of a polymerizable eugenol derivative on the antibacterial activity and wettability of a resin composite for intracanal post cementation and core build-up restoration. Dental Materials, 32(7), 929-939. DOI: 10.1016929-939. DOI: 10. /j.dental.2016 Citing this paper Please note that where the full-text provided on King's Research Portal is the Author Accepted Manuscript or Post-Print version this may differ from the final Published version. If citing, it is advised that you check and use the publisher's definitive version for pagination, volume/issue, and date of publication details. And where the final published version is provided on the Research Portal, if citing you are again advised to check the publisher's website for any subsequent corrections. General rightsCopyright and moral rights for the publications made accessible in the Research Portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognize and abide by the legal requirements associated with these rights.•Users may download and print one copy of any publication from the Research Portal for the purpose of private study or research.•You may not further distribute the material or use it for any profit-making activity or commercial gain •You may freely distribute the URL identifying the publication in the Research Portal Take down policyIf you believe that this document breaches copyright please contact librarypure@kcl.ac.uk providing details, and we will remove access to the work immediately and investigate your claim. AbstractObjectives: Eugenol has been used in dentistry due to its ability to inhibit the growth of a range of microorganisms, including facultative anaerobes commonly isolated from infected root canals. The aim of this study was to evaluate the antibacterial activity of the experimental composites containing eugenyl methacrylate monomer (EgMA), a polymeric derivative of eugenol, against a range of oral bacteria, commonly associated with failure of coronal and endodontic restorations. In vitro composite behaviour and wettability were also studied in conjunction with their antibacterial activity.

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High Strain Rate Friction Response of Porcine Molar Teeth and Temporary Braces

Chen

Tsai

2013

Dynamic Behavior of Materials, Volume 1

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Fracture strength and fracture patterns of root filled teeth restored with direct resin restorations

Cited by 83 publications

References 38 publications

Fracture Strength and Fracture Patterns of Root-filled Teeth Restored With Direct Resin Composite Restorations Under Static and Fatigue Loading

Fracture Strength and Fracture Patterns of Root-filled Teeth Restored With Direct Resin Composite Restorations Under Static and Fatigue Loading

Influence of a polymerizable eugenol derivative on the antibacterial activity and wettability of a resin composite for intracanal post cementation and core build-up restoration

High Strain Rate Friction Response of Porcine Molar Teeth and Temporary Braces

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