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...

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...

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...

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. ...

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...

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...

MADAM, Amalgam tattoo is the most common exogenous pigmentation of the oral mucosa; surprisingly, there are no reports of similar lesions on the skin. It is caused by traumatic implantation of amalgam fragments into the oral mucosa following dental treatment, particularly when amalgam fillings are removed with high-speed instruments. Amalgam tattoo occurs mostly in the gingiva and alveolar muco...

AIM To compare the retention of amalgam restorations in bonded amalgam restoration and restorations with undercuts. BACKGROUND With improvement in adhesive technology problem associated with conventional preparation for amalgam restorations mainly compromised resistance form of tooth structure have been largely overcome. MATERIALS AND METHODS Forty caries free extracted molars were used. A ...

The Case Against Amalgam ............................................................................. 1 Amalgam releases significant quantities of mercury. ........................................... 2 Mercury distributes to tissues around the body................................................... 4 Maternal – fetal transfer of mercury.............................................................

Informally, an amalgam is a group ‘sitting inside’ two other groups and the coset graph is a way to look at how the cosets of subgroups interact. These are combined in the amalgam method — a way of classifying amalgams satisfying certain conditions. The amalgam method was used in the classifications of finite simple groups, and is discussed in Classification of Finite Simple Groups no. 2 by Gor...