Homayoun Alaghehmand
,Dental Materials Research Center, Health Research Institute, Babol University of Medical Sciences,Babol, IR Iran.
[ 1 ] - Sodium fluoride addition to a two-step etch-and-rinse adhesive system: effect on dentin microtensile bond strength and durability
Introduction: Studies have suggested that sodium fluoride (NaF) has an inhibitory effect on the activity of endogenous matrix metalloproteinase enzymes. This study assessed the effect of a fluoride-containing adhesive on microtensile bond strength (µTBS) over time. Material & Methods: In this experimental study, 36 extracted third molars were used to evaluate the µTBS of...
[ 2 ] - A comparative study of the effects of QTH and LED light curing units on the surface hardness of colored compomer and Hybrid composites
Introduction: One factor affecting the degree of polymerization is the type of light-curing device. The aim of this study was to compare the effects of LED and QTH light curing units on the surface hardness of composite and compomer. Materials & Methods: In this experimental study, 30 samples of composite and compomer were divided into 3 groups of 10 each. One-half of the subgroups in each g...
[ 3 ] - اثر کلرهگزیدین 2% بر ریزنشت مینایی ترمیمهای کامپوزیتی با استفاده از باندینگهای عاجی نسل 5، 6، 7 و یونیورسال ( در آزمایشگاه)
سابقه و هدف: ماتریکس متالو پروتئیناز در ثبات باند کامپوزیت به دندان نقش مهمی دارد. در سالهای اخیر کلرهگزیدین به عنوان مهارکننده فعالیت ماتریکس متالو پروتئیناز پیشنهاد شده است. هدف از این مطالعه بررسی اثر کلرهگزیدین 2% بر ریزنشت مینایی ترمیمهای کامپوزیتی در سیستمهای باندینگ مختلف می باشد. مواد و روشها: در این مطالعه آزمایشگاهی، حفرات کلاس V در سطح باکال و لینگوال 40 دندان مولر کشیده شده تهیه ...
[ 4 ] - Effect of hydrofluoric acid concentration and etching time on microtensile bond strength of suprinity and enamic CAD/CAM ceramics to resin cement
Introduction: The use of dental ceramics has increased due to their beauty and biocompatibility. The aim of this study was to evaluate the effect of hydrofluoric acid concentration and etching time on microtensile bond strength (μTBS) of the Enamic and Suprinity ceramics. Material & Methods: In this in vitro study, two hydrofluoric acid (HFA) concentrations of 5% (A) and 10% (B) were used at t...
[ 5 ] - Effect of hydrofluoric acid concentration and etching time on the surface roughness of CAD/CAM ceramics
Introduction: Dental ceramics are considered as materials that can restore the appearance of natural teeth. Etching the inner surface of a ceramic restoration with hydrofluoric acid (HF) followed by using a silane coupling agent is a well-known and recommended method to increase the bond strength. The aim of etching on ceramic structure is to enhance the surface roughness (Ra) and energy and to...
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