Mechanical evaluation of five flowable resin composites by the dynamic micro-indentation method

نویسندگان

  • Satoshi Hirayama
  • Hirotoshi Iwai
  • Yasuhiro Tanimoto
چکیده

Measurement of the strength of brittle materials, such as resin composites, is extremely difficult. Micro-indentation hardness testing is a convenient way of investigating the mechanical properties of a small volume of material. In this study, the mechanical properties of five commercially available flowable resin composites were investigated by the dynamic micro-indentation method. Additionally, the effects of inorganic-filler content on the dynamic hardness and elastic modulus of flowable composites obtained by this method were investigated. The weight percentages of the inorganic fillers in the resin composites were determined by the ashing technique. The results indicate that the mechanical properties of flowable composites are affected by not only the filler content but also the properties of the resin matrix. In conclusion, the dynamic micro-indentation method is a useful technique for determining the mechanical behavior of dental resin composites as brittle material.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Investigations on a methacrylate-based flowable composite based on the SDR™ technology.

OBJECTIVE Monomer development for a reduced shrinkage of composite materials still challenges the modern research. The purpose of this study was to analyse the shrinkage behavior of an innovative composite material for dental restorations based on a resin system that is claimed to control polymerization kinetics having incorporated a photoactive group within the resin. METHODS Shrinkage stres...

متن کامل

Evaluation of Mechanical Properties of Flowable Dental Composites Containing Antibacterial Compound

Abstract   Background and Aims: The purpose of this study was to evaluate the mechanical properties of flowable dental composites containing the antibacterial compound. Materials and Methods: The study was conducted through experimental design. Compound 3- (2,5-Dimethylfuran-3-yl) -1H-pyrazol-5- (4H)-one were synthesized using Ethyl chloroformate, hydrazine hydrate and 3-acetyl-2,5-dimethylfur...

متن کامل

Dynamic thermo-mechanical properties of various flowable resin composites

BACKGROUND This study compared the storage modulus (E'), the loss modulus (E'') and the loss tangent (tan δ) of various flowable resin composites. MATERIAL AND METHODS Grandio Flow (GRF), GrandioSo Heavy Flow (GHF), Filtek Supreme XTE (XTE) and Filtek Bulk Fill (BUL) flowable resins and Clinpro Sealant (CLI) ultra-flowable pit and fissure sealant resin were used. 25 samples were tested using ...

متن کامل

Bulkfill flowable composite resins – A review

Flowable composite resins are widely used in clinical practice. Bulk Fill flowable resins with improved mechanical and chemical characteristics have recently been introduced. These composites are low-viscosity materials with the reduced percentage of inorganic filler particles and higher amount of resinous components. Consequently, the polymerization process leads to volumetric contraction, but...

متن کامل

SEM and microleakage evaluation of 3 flowable composites as sealants without using bonding agents.

PURPOSE The aim of this study was to determine if flowable composites can be used as pit and fissure sealants without bonding agents. METHODS Three flowable composites (Filtek Flow, Tetric Flow, Charmfil Flow) and a filled sealant (Ultraseal XT Plus) were used. The patterns of resin tag formation in the 4 sealant materials were compared using scanning electron microscopy. For the microleakage...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره 5  شماره 

صفحات  -

تاریخ انتشار 2014