نتایج جستجو برای: pin amalgam

تعداد نتایج: 16278  

Journal: :The Journal of forensic odonto-stomatology 2009
V M Phillips M Stuhlinger

The dental identification of human remains utilizes the matching of dental restorations. The radiographic images of amalgam restorations are paramount in this process. The compound amalgam restoration has a unique radiographic morphology and can be readily identified in both antemortem and postmortem data. To test the radiographic morphology of compound amalgam restorations, 10 out of 40 Typodo...

2010
Masayoshi OHASHI

The physical properties of amalgam are influenced by various manipulative factors such as mercury-alloy ratio, mixing time, existence of a ball in the capsule in the process of mixing, condensation pressure and the twisting movement given to the amalgam mix by the plugger in the process of condensation[1-8]. These factors, on the whole, determine the properties of amalgam restorations. It is cl...

2012
Helen McParland Saman Warnakulasuriya

Human oral mucosa is subjected to many noxious stimuli. One of these substances, in those who have restorations, is dental amalgam which contains mercury. This paper focuses on the local toxic effects of amalgam and mercury from dental restorations. Components of amalgam may, in rare instances, cause local side effects or allergic reactions referred to as oral lichenoid lesions (OLLs). OLLs to ...

2010
Weeraporn Veerapravati Nattaya Vongphan

Purpose: To compare in vitro fracture resistance of endodontically treated premolars restored with bonded amalgam or resin composite. Materials and Methods: Fifty intact and caries-free premolars that had been extracted for orthodontic treatment were selected. All teeth were subjected to endodontic procedures and MOD cavity preparation. They were then randomly divided into the five following gr...

2010
Firoz Pouralibaba Mohammad Joulaei Atabak Kashefimehr Farzaneh Pakdel Zahra Jamali Ali Esmaeili

BACKGROUND AND AIMS The present study evaluated the most common reasons for replacing amalgam restorations in a university clinic. MATERIALS AND METHODS A total of 217 restorations which needed to be replaced were clinically and radiographically evaluated in a period of 4 months. The frequencies of reasons for replacing amalgam restorations were calculated: The assessed items included recurre...

Journal: :Evolutionary computation 2013
Peter A. N. Bosman Jörn Grahl Dirk Thierens

We describe a parameter-free estimation-of-distribution algorithm (EDA) called the adapted maximum-likelihood Gaussian model iterated density-estimation evolutionary algorithm (AMaLGaM-ID[Formula: see text]A, or AMaLGaM for short) for numerical optimization. AMaLGaM is benchmarked within the 2009 black box optimization benchmarking (BBOB) framework and compared to a variant with incremental mod...

Ali Eskandarizadeh, Mojtaba Rajaeinejad Razieh Hoseinifar Zahra Jalali,

Background & Aims: Repair of defective restoration is more conservative than replacing it. Veneering the amalgam restorations with opaque resin materials can satisfy the esthetic demands. Evaluation of interfacial bond quality between amalgam and composite surface is one of the important factors in assessing the quality of repaired amalgam which can be achieved...

Journal: :Dental materials journal 2000
K Ohmoto H Nakajima J L Ferracane H Shintani T Okabe

This study examined the relationship between mercury content and mercury evaporation from amalgams during setting. Two different types of commercial high-copper amalgams (single composition and admixed types) were used. Cylindrical specimens of each amalgam were prepared with five different mercury contents according to ADA Specification No.1. Specimens were also prepared by hand condensation. ...

Journal: :journal of dental research, dental clinics, dental prospects 0
mahmoud bahari assistant professor, dental and periodontal research center, faculty of dentistry, tabriz university of medical sciences parnian alizadeh oskoee 3- associate professor, department of operative dentistry, school of dentistry, tabriz university of medical sciences, tabriz, iran. siavash savadi oskoee 4- professor, dental and periodontal research center, tabriz university of medical sciences, tabriz, iran. firoz pouralibaba assistant professor, department of oral medicine, tabriz university of medical sciences, tabriz, iran. ali morsal ahari 6- postgraduate student, department of endodontics, isfahan azad university of medical sciences, isfahan, iran

background and aim(s): since it is possible for carbamide peroxide (cp) bleaching agent to contact with amalgam restorations in the oral cavity, the present in vitro study evaluated the amount of dissolved mercury released from amalgam restorations with various percentages of silver content subsequent to the use of 15% cp. materials and methods: thirty ana 2000 amalgam disks with 43.1% silver c...

Journal: :journal of dentistry, tehran university of medical sciences 0
sh. kasraei associate professor, department of restorative dentistry, school of dentistry, hamadan university of h. mortazavi assistant professor, department of oral medicine, school of dentistry, hamadan university of medical m. vahedi assistant professor, department of oral medicine, school of dentistry, hamadan university of medical p. bakianian vaziri mj. assary assistant professor, department of occupational health, school of health, hamadan university of medi

objective: exposure to mercury can occur in occupational and environmental settings. during clinical work with dental amalgam, the dental personnel are exposed to both metallic mercury and mercury vapor. the aim of the present study was to investigate blood mercury level (bml) and its determinants among dentists practicing in hamadan city, iran. materials and methods: this cross sectional study...

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