Fatemeh Hajizadeh

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BACKGROUND Periodontitis is a local chronic inflammatory condition of the supporting structures of the teeth resulting from a dental plaque biofilm attached to teeth surfaces. Recent studies have indicated that this oral disease may have effects on systemic health. OBJECTIVES The aim of the present study was to evaluate the association between(More)
BACKGROUND The aim of this study was to compare the effects of conventional acid etching and laser etching on the nano-mechanical properties of the dental enamel using nano-indentation test. MATERIALS AND METHODS In this experimental in vitro study, buccal surfaces of 10 premolars were divided into three regions. One of the regions was etched with 37%(More)
BACKGROUND The aim of the present study is to evaluate the effects of a fluoride-releasing composite resin bonding material on reducing enamel demineralization underneath and around orthodontic brackets and compare that with a conventional adhesive system. MATERIALS AND METHODS Buccal surfaces of 10 intact extracted premolar teeth were divided into two(More)
BACKGROUND Laser ablation has been suggested as an alternative method to acid etching; however, previous studies have obtained contrasting results. The purpose of this study was to compare the shear bond strength (SBS) and fracture mode of orthodontic brackets that are bonded to enamel etched with acid and erbium-doped yttrium aluminum garnet (Er:YAG)(More)
OBJECTIVE The amount and consistency of the applied forces to the tooth are important factors in tooth movements; therefore, the aim of this study was to compare the initial force and the force loss of three brands of elastics in 24 hours. MATERIALS AND METHODS In this in-vitro study sixty non-latex elastics (3/16 medium) from three companies(More)
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