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Article: Fiber-reinforced Composite Fixed Dental Prostheses with Various Pontics

TitleFiber-reinforced Composite Fixed Dental Prostheses with Various Pontics
Authors
Issue Date2014
PublisherQuintessence Publishing Co Ltd
Citation
Journal of Adhesive Dentistry, 2014, v. 16 n. 2, p. 161-168 How to Cite?
AbstractPURPOSE: To evaluate the load-bearing capacities of fiber-reinforced composite (FRC) fixed dental prostheses (FDP) with pontics of various materials and thicknesses. MATERIALS AND METHODS: Inlay preparations for retaining FDPs were made in a polymer phantom model. Seventy-two FDPs with frameworks made of continuous unidirectional glass fibers (everStick C&B) were fabricated. Three different pontic materials were used: glass ceramics, polymer denture teeth, and composite resin. The FDPs were divided into 3 categories based on the occlusal thicknesses of the pontics (2.5 mm, 3.2 mm, and 4.0 mm). The framework's vertical positioning varied respectively. Each pontic material category contained 3 groups (n = 8/group). In group 1, pontics were fabricated conventionally with composite resin (G-ӕnial, GC) with one additional transversal fiber reinforcement. In group 2, the pontics were polymer denture teeth (Heraeus- Kulzer). Group 3 had an IPS-Empress CAD pontic (Ivoclar Vivadent) milled using a Cerec CAD/CAM unit. Groups 1 and 2 served as controls. Each FDP was statically loaded from the pontic until initial fracture (IF) and final fracture (FF). Initial-fracture data were collected from the load-deflection graph. RESULTS: ANOVA indicated statistically significant differences between the materials and occlusal thicknesses (p < 0.001). Quadratic analysis demonstrated the highest correlation between the thickness of the pontic and IF and FF values with ceramic pontics (IF: p < 0.001; R2 = 0.880; FF: p < 0.001; R2 = 0.953). CONCLUSION: By increasing the occlusal thickness of the pontic, the load-bearing capacity of the FRC FDPs may be increased. The highest load-bearing capacity was obtained with 4.0 mm thickness in the ceramic pontic. However, with thinner pontics, polymer denture teeth and composite pontics resulted in higher load-bearing values.
Persistent Identifierhttp://hdl.handle.net/10722/196772
ISSN
2015 Impact Factor: 1.594
2015 SCImago Journal Rankings: 0.486
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorPerea, Len_US
dc.contributor.authorMatinlinna, JPen_US
dc.contributor.authorTolvanen, Men_US
dc.contributor.authorLassila, LVen_US
dc.contributor.authorVallittu, PKen_US
dc.date.accessioned2014-04-29T03:38:55Z-
dc.date.available2014-04-29T03:38:55Z-
dc.date.issued2014en_US
dc.identifier.citationJournal of Adhesive Dentistry, 2014, v. 16 n. 2, p. 161-168en_US
dc.identifier.issn1461-5185-
dc.identifier.urihttp://hdl.handle.net/10722/196772-
dc.description.abstractPURPOSE: To evaluate the load-bearing capacities of fiber-reinforced composite (FRC) fixed dental prostheses (FDP) with pontics of various materials and thicknesses. MATERIALS AND METHODS: Inlay preparations for retaining FDPs were made in a polymer phantom model. Seventy-two FDPs with frameworks made of continuous unidirectional glass fibers (everStick C&B) were fabricated. Three different pontic materials were used: glass ceramics, polymer denture teeth, and composite resin. The FDPs were divided into 3 categories based on the occlusal thicknesses of the pontics (2.5 mm, 3.2 mm, and 4.0 mm). The framework's vertical positioning varied respectively. Each pontic material category contained 3 groups (n = 8/group). In group 1, pontics were fabricated conventionally with composite resin (G-ӕnial, GC) with one additional transversal fiber reinforcement. In group 2, the pontics were polymer denture teeth (Heraeus- Kulzer). Group 3 had an IPS-Empress CAD pontic (Ivoclar Vivadent) milled using a Cerec CAD/CAM unit. Groups 1 and 2 served as controls. Each FDP was statically loaded from the pontic until initial fracture (IF) and final fracture (FF). Initial-fracture data were collected from the load-deflection graph. RESULTS: ANOVA indicated statistically significant differences between the materials and occlusal thicknesses (p < 0.001). Quadratic analysis demonstrated the highest correlation between the thickness of the pontic and IF and FF values with ceramic pontics (IF: p < 0.001; R2 = 0.880; FF: p < 0.001; R2 = 0.953). CONCLUSION: By increasing the occlusal thickness of the pontic, the load-bearing capacity of the FRC FDPs may be increased. The highest load-bearing capacity was obtained with 4.0 mm thickness in the ceramic pontic. However, with thinner pontics, polymer denture teeth and composite pontics resulted in higher load-bearing values.-
dc.languageengen_US
dc.publisherQuintessence Publishing Co Ltden_US
dc.relation.ispartofJournal of Adhesive Dentistryen_US
dc.subject.meshComposite Resins - chemistry-
dc.subject.meshDental Materials - chemistry-
dc.subject.meshDenture Design-
dc.subject.meshDenture, Partial, Fixed-
dc.subject.meshGlass - chemistry-
dc.titleFiber-reinforced Composite Fixed Dental Prostheses with Various Ponticsen_US
dc.typeArticleen_US
dc.identifier.emailMatinlinna, JP: jpmat@hku.hken_US
dc.identifier.authorityMatinlinna, JP=rp00052en_US
dc.identifier.doi10.3290/j.jad.a30755en_US
dc.identifier.pmid24179988-
dc.identifier.hkuros228707en_US
dc.identifier.hkuros228154-
dc.identifier.volume16en_US
dc.identifier.issue2-
dc.identifier.spage161en_US
dc.identifier.epage168en_US
dc.identifier.isiWOS:000336356400009-

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