Influence of several fibre-reinforced composite restoration techniques on cusp movement and fracture strength of molar teeth

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dc.contributor.authorAkman, Serhan
dc.contributor.authorAkman, Melek
dc.contributor.authorEskitaşcıoğlu, Gülhan
dc.contributor.authorBelli, Sema
dc.date.accessioned2020-03-26T18:14:55Z
dc.date.available2020-03-26T18:14:55Z
dc.date.issued2011
dc.departmentSelçuk Üniversitesien_US
dc.description.abstractP>Aim To compare mean cusp movement in molar teeth with endodontic access and mesial-occlusal-distal (MOD) cavities before and after restoration with several fibre-reinforced composite restoration techniques under loading and to evaluate the effect of restoration technique on fracture strength. Methodology Reference points were marked at the mesial cusp ridges of extracted human mandibular molar teeth. Digital images were taken under loading (300 N) using a stereomicroscope (Leica MZ16A; Wetzlar, Germany). Three-dimensional (3D) distances between the reference points were recorded (Leica, Stereo-Explorer, 2.1) as controls. Standard MOD cavities were prepared and restored as follows (n = 10), group 1: composite restoration (Clearfil AP-X; Kuraray, Tokyo, Japan); group 2: cavity lined with polyethylene fibre (Ribbond, Ribbond Inc., Seattle, WA, USA) in combination with flowable resin (Protect-Liner F; Kuraray, Tokyo, Japan) before composite restoration; group 3: polyethylene fibre inserted on occlusal surface of the tooth from buccal to lingual after finishing the composite restoration; group 4: missing walls were restored with composite resin and inner surfaces of the axial walls were then reinforced with polyethylene fibre placed circumferentially before the composite restoration. The restored teeth were re-loaded, digital images were re-taken and the 3D distance between the reference points was recorded in mu m. Comparisons of the restoration techniques, the effectiveness of restoration for each group were analysed statistically (Kruskall-Wallis, paired-samples t-test). The teeth were then loaded until failure (5 mm min-1), the data were recorded (N) and analysed statistically (Kruskall-Wallis test). Results A significant difference occurred amongst the groups in terms of cusp movement (P = 0.018). All the groups revealed a decrease in inter-cuspal width when compared to their initial records. The mean values of these decreases were as follows: group 1 17.6 (P = 0.003), group 2 6.7 (not sig), group 3 6.6 (not sig) and group 4 0.85 (not sig) mu m. No significant difference was found amongst the fracture strength values (P = 0.22). In group 1, 90% of the fractures were non-restorable, whereas in group 3 100% of the fractures were restorable. Conclusions Regardless of restoration technique, fibre reinforcement of composite restorations decreased cusp movement in molar teeth with MOD and endodontic access cavities but did not affect fracture strength.en_US
dc.description.sponsorshipScientific Research Projects Coordination Center of Selcuk University (BAP)Selcuk Universityen_US
dc.description.sponsorshipThis study was performed in Research Center of Dental Faculty of Selcuk University and supported in part by Scientific Research Projects Coordination Center of Selcuk University (BAP). The materials are generously supplied by the companies. The authors thank Dr Oguz Eraslan from Department of Prosthodontics and Dr Alparslan Gokalp from Department of Pedodontics, Selcuk University, Faculty of Dentistry for their contribution to the schematic drawings.en_US
dc.identifier.doi10.1111/j.1365-2591.2010.01843.xen_US
dc.identifier.endpage415en_US
dc.identifier.issn0143-2885en_US
dc.identifier.issn1365-2591en_US
dc.identifier.issue5en_US
dc.identifier.pmid21219366en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage407en_US
dc.identifier.urihttps://dx.doi.org/10.1111/j.1365-2591.2010.01843.x
dc.identifier.urihttps://hdl.handle.net/20.500.12395/26559
dc.identifier.volume44en_US
dc.identifier.wosWOS:000288546300005en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakPubMeden_US
dc.language.isoenen_US
dc.publisherWILEYen_US
dc.relation.ispartofINTERNATIONAL ENDODONTIC JOURNALen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.selcuk20240510_oaigen_US
dc.subjectcuspal deflectionen_US
dc.subjectcuspal movementen_US
dc.subjectfibre-reinforced compositesen_US
dc.subjectendodontically treated teethen_US
dc.subjectloadingen_US
dc.subjecttopographical mesurementen_US
dc.titleInfluence of several fibre-reinforced composite restoration techniques on cusp movement and fracture strength of molar teethen_US
dc.typeArticleen_US

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