TY  - JOUR
TT  - FİBER İLE GÜÇLENDİRME KOMPOZİT REZİNLERİN EĞİLME DİRENCİNE  ETKİ EDER Mİ?
AU  - Aktaş, Güliz
AU  - Göncü Başaran, Emine
AU  - Güncü, M. Barış
AU  - Vallıttu, Pekka K.
AU  - Lassıla, Lippo V.J.
PY  - 2016
DA  - December
DO  - 10.17567/ataunidfd.290303
JF  - Atatürk Üniversitesi Diş Hekimliği Fakültesi Dergisi
JO  - Ata Diş Hek Fak Derg
PB  - Atatürk Üniversitesi
WT  - DergiPark
SN  - 1300-9044
SP  - 473
EP  - 477
VL  - 26
IS  - 3
KW  - Kompozit rezin
KW  - fiber
N2  - Amaç: Kompozit rezinler uzun yıllardır hemrestoratif dolgu maddesi olarak hem de adeziv restorasyonlarda diş eksikliklerinin giderilmesindekullanılmaktadır. Artan okluzal yükler karşısında  kompozit rezinlerin fiber ile güçlendirilmesimateryalin dayanıklılığını artırmak amacı ile kullanılan bir yöntemdir. Bu invitro çalışmanın amacı fiber ilegüçlendirmenin kompozit rezinlerde eğilme direncine olan etkisininaraştırılmasıdır. Gereç ve Yöntem: Farklı fiberdağılımına ve rezin oranına sahip kompozit bloklar (GR 1, GR 2, GR 3,) ve bir deneysel kompozit (GR 4)laboratuvar ortamında hazırlandı. Fiber ile güçlendirilmiş bloklar ve piyasadayer alan hazır kompozit blok (GR 5) kesme cihazı ile ebadı 2x2x25 mm olacakşekilde 5 gruba (n:18) ayrıldı. Örneklere 24 saat 37 C de distile sudabekletildikten sonra Universal test cihazında  1mm/dk hızla  eğilme testiuygulandı. Sonuçlar  tek yönlü varyansanalizi (ANOVA) ile değerlendirildi.  Bulgular: Tüm gruplar arasındaistatiksel olarak anlamlı farklılık gözlenmiştir (p<0.001). Ortalama eğilmedirenci değerleri ve standart sapmaları GR 1, GR 2, GR 3, GR 4 ve GR 5’desırasıyla 130±6, 125±5.1, 136±6.8, 115±4 ve 85±2.9 bulundu.  Gr 3 en yüksek değeri gösterirken, Gr 5 endüşük değeri göstermiştir (p<0.001). Sonuç: Bu invitro çalışmada kompozit rezinlerin cam fiber ile güçlendirilmesieğilme direncini artırmaktadır.Anahtar kelimeler: Kompozit rezin, fiber, eğilme direncDOES FIBER REINFORCEMENTEFFECT ON FLEXURAL STRENGTH OF COMPOSITE RESINS?ABSTRACT Aim: Composite resins havebeen used for many years both as a restorative material and adhesiverestorations on the loss of tooth structure. Fiber reinforcement is the mostcommonly used method for increasing the strength of the composite materialsunder increased occlusal forces. The aim of this in vitro study was toinvestigate the effect of fiber reinforcement of composite resins for theirflexural strength.Materialand Methods:  Composite blocks (GR 1, GR 2, GR 3,) whichhave different fiber configurations/ resin ratio and experimental composite (GR4) were prepared in laboratory condition. Fiber reinforced composite blocks andcommercial available composite blocks (GR 5) were cut into small specimens(2x2x 25mm) into 5 subgroups (n:18). The specimens were stored in distilledwater at 370 Cfor 24 hour, and then flexural strength tests were performed with usingUniversal Testing Machine. Data were analyzed using one-way ANOVA. Results: Significant differenceswere found among the flexural strength of the tested groups (p<0.001).  The mean flexural strength values of the GR1, GR 2, GR 3, GR 4 and GR 5 were 130±6, 125±5.1, 136±6.8, 115±4 and 85±2.9respectively.  GR 3 exhibited the highestflexural strength values in comparison to the other groups (p<0.001). Whilecontrol group (Gr 5) exhibited the lowest. Conclusion:Itis concluded that glass fiber reinforcement improves the flexural strength ofcomposite resins.Key words: Composite resin, fiber, flexural strength
CR  - Gaengler P, Hoyer I, Montag R, Gaebler P. Micromorphological evaluation of posterior composite restorations - a 10-year report. J Oral Rehabil 2004;31:991-1000.
CR  - 2.	Kohler B, Rasmusson CG, Odman P. A five-year clinical evaluation of Class II composite resin restorations. J Dent 2000;28:111-6.
CR  - 3.	Sarrett DC. Clinical challenges and the relevance of materials testing for posterior composite restorations. Dent Mater 2005;21:9-20.
CR  - 4.	Vallittu PK, Narva K. Impact strength of a modified continuous glass fiber - Poly(methyl methacrylate). Int J Prosthodont 1997;10:142-8.
CR  - 5.	Kangasniemi I, Vallittu P, Meiers J, Dyer SR, Rosentritt M. Consensus statement on fiber-reinforced polymers: Current status, future directions, and how they can be used to enhance dental care. Int J Prosthodont 2003;16:209-9.
CR  - 6.	Kim SH, Watts DC. Effect of glass-fiber reinforcement and water storage on fracture toughness (K-JC) of polymer-based provisional crown and FPD materials. Int J Prosthodont 2004;17:318-22.
CR  - 7.	Vallittu PK. Flexural properties of acrylic resin polymers reinforced with unidirectional and woven glass fibers. J Prosthet Dent 1999; 81: 318-26.
CR  - 8.	Vallittu PK. Survival rates of resin-bonded, glass fiber-reinforced composite fixed partial dentures with a mean follow-up of 42 months: A pilot study. J Prosthet Dent 2004;91:241-6.
CR  - 9.	Stipho HD. Repair of acrylic resin denture base reinforced with glass fiber. J Prosthet Dent 1998;80:546-50.
CR  - 10.	Dyer SR, Lassila LVJ, Jokinen M, Vallittu PK. Effect of fiber position and orientation on fracture load of fiber-reinforced composite. Dent Mater 2004;20:947-55
CR  - Candan U, Eronat E, Turkun M. Fiberle güçlendirmenin nanofil kompozitin eğme direncine etkisinin incelenmesi. Atatürk Üniv Diş Hek Fak Derg 2015;25:13-20.
CR  - 21.	Venhoven BAM, deGee AJ, Werner A, Davidson CL. Influence of filler parameters on the mechanical coherence of dental restorative resin composites. Biomaterials 1996;17:735-40.
CR  - 22.	Ellakwa AE, Shortall AC, Shehata MK, Marquis PM. The influence of fibre placement and position on the efficiency of reinforcement of fibre reinforced composite bridgework. J Oral Rehabil 2001;28:785-91.
CR  - 23.	Altieri JV, Burstone CJ, Goldberg AJ, Patel AP. Longitudinal Clinical-Evaluation of Fiber-Reinforced Composite Fixed Partial Dentures - a Pilot-Study. J Prosthet Dent 1994;71:16-22.
CR  - 24.	Vallittu P. Glass fiber reinforcement in repaired acrylic resin removable dentures: preliminary results of a clinical study. Quintessence Int 1997;28:39-44.
CR  - 25.	Basaran EG, Ayna E, Vallittu PK, Lassila LVJ. Load Bearing Capacity of Fiber-Reinforced and Unreinforced Composite Resin Cad/Cam-Fabricated Fixed Dental Prostheses. J Prosthet Dent 2013;109:88-94.
CR  - 26.	Keulemans F, Lassila LVJ, Garoushi S, et al. The influence of framework design on the load-bearing capacity of laboratory-made inlay-retained fibre-reinforced composite fixed dental prostheses. J Biomech 2009;42:844-9.
CR  - 27.	Jones M, Bayne SC, Thompson JY. Effects of branched-fiber pillar additions on dental composite mechanical properties. J Dent Res 1997;76:76.
UR  - https://doi.org/10.17567/ataunidfd.290303
L1  - http://dergipark.org.tr/tr/download/article-file/273843
ER  -