microleakage in class ii composite restorations ... - ePrints@USM

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secara longitudinal. Penetrasi dakwat pada pinggir gingiva diukur dalam millimetermenggunakan “confocal laser scanning microscope” (CLSM) pada 10x magnifikasi.Data dianalisa menggunakan “Two-Way ANOVA” dan keputusan dengan p0.05) untuk sistem perlekatan “self-etch”, “one-step”, “one-component” (G Bond)dan sistem perlekatan etsa dan bilas (Adper Single Bond 2). Penetrasi dakwat antarabahan komposit yang digunakan juga menunjukkan tiada perbezaan signifikan (p>0.05).Tiada perbezaan yang signifikan dapat dilihat dalam penetrasi dakwat pada pinggirgingiva dalam semua kumpulan kajian. Kesimpulan: Sistem perlekatan “self-etch”,“one-step”, “one-component” dan bahan tampalan nanokomposit memberi keputusanyang sama dengan sistem perlekatan etsa dan bilas dan mikrohibrid komposit dalammengurangkan kebocoran mikro pada tampalan komposit kelas II.xiii
MICROLEAKAGE IN CLASS II COMPOSITE RESTORATIONS BONDEDWITH DIFFERENT ADHESIVE SYSTEMSABSTRACTObjectives: The purpose of this study was to compare the effect of self-etch, one-step,one-component adhesive system and etch and rinse adhesive system as well as thenanocomposite and microhybrid composite on the microleakage of class II compositerestorations located in dentin. The effect of the combination of self-etch, one-step, onecomponentadhesive and nanocomposite on the microleakage of class II compositerestorations located in dentin was also investigated. Materials and Methods: Fifty twoupper permanent premolar teeth were used and two class II cavities (3 millimeter (mm)width x 1.5 mm depth) with gingival margins ended 1mm below CEJ were prepared andfilled in each tooth. Two adhesive systems: self-etch, one-step, one-component adhesivesystem (G Bond, GC, Japan), etch and rinse adhesive system (Adper Single Bond 2, 3MESPE, USA) and two composite materials: nanocomposite (Filtek Z350, 3M ESPE,USA), microhybrid composite (Filtek Z250, 3M ESPE, USA) were used and applied inthis study according to the manufacturers instructions. The 104 cavities were dividedrandomly into four groups (n=26). The first two groups were restored with Filtek Z350(3M ESPE, USA) while the last two groups were restored with Filtek Z250 (3M ESPE,USA). All the cavities in group 1 and 3 were bonded with G Bond (GC, Japan) whilethe cavities in group 2 and 4 were bonded with Adper Single Bond 2 (3M ESPE, USA).The specimens were thermocycled between 5° to 55° C with 30 second dwell time for500 cycles. The samples were then immersed in 0.5% Rhodamine B dye for 10 hoursand sectioned longitudinally. Dye penetration at the gingival margin was quantified inmillimeters under confocal laser scanning microscopy (CLSM) at 10x magnification.Data were analyzed using Two-Way ANOVA and results with p
Page 1 and 2: MICROLEAKAGE IN CLASS II COMPOSITE
Page 3 and 4: DEDICATIONTo my mother and my fathe
Page 5 and 6: TABLE OF CONTENTSPageDEDICATION ...
Page 7 and 8: 2.4.4 Confocal Laser Scanning Micro
Page 9 and 10: REFERENCES ........................
Page 11 and 12: LIST OF FIGURESPageFig. 2.1 Adhesiv
Page 13: KEBOCORAN MIKRO DALAM TAMPALAN KOMP
Page 17 and 18: CHAPTER ONEINTRODUCTION1.1 Backgrou
Page 19 and 20: data regarding microleakage of nano
Page 21 and 22: Malaysia, it is important to study
Page 23 and 24: CHAPTER TWOLITERATURE REVIEW2.1 Mic
Page 25 and 26: dental restoratives, and the macros
Page 27 and 28: plasticization, microcrack formatio
Page 29 and 30: duration of appropriate exposure. S
Page 31 and 32: microleakage when they were subject
Page 33 and 34: Fluorescent dyes were used by many
Page 35 and 36: attached to the etched area and he
Page 37 and 38: However, (Tay and Pashley, (2005) s
Page 39 and 40: popularity. Although adhesives that

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