CONTEXT No randomized trials have been published that address the concern that inhalation of mercury vapor released by amalgam dental restorations causes adverse health effects. OBJECTIVE To compare the neuropsychological and renal function of children whose dental caries were restored using amalgam or mercury-free materials. DESIGN AND SETTING The New England Children's Amalgam Trial was a...

Background: Although it is one of the most toxic nonradioactive elements, mercury is widely used in dental amalgam. Mercury is a toxic element which can damage various organs such as central nervous system, renal, respiratory and hematologic systems. The adverse health impacts associated to exposure to some common sources of electromagnetic fields including laptop computers, mobile phones, ...

Oral lichenoid reaction is a clinical entity characterized by microscopic features of hypersensitivity due to foreign body or contact reaction. It is usually presented in the cheek mucosa after chronic contact irritation from various materials used in dentistry. Amalgam restoration of tooth cavities has been used for many decades. This filling material is occasionally suspected for chronic epid...

Endodontically treated teeth can be restored with a wide range of techniques of varying complexity. This paper presents a straightforward technique for the restoration of endodontically treated teeth that meet certain standards. Criteria are provided for the utilization of crowns, composite resins, cast gold post cores, amalgam or composite build-ups, and passive, parallel, small diameter stain...

background and aims. retreatment of existing restorations not only requires a lot of money and time but also there is a danger of weakening tooth structure and irritating the pulp. since awareness of the reasons for the retreatment of teeth will save the teeth from possible future failure, the aim of this study was to assess the reasons for retreatment of amalgam and composite restorations in p...

For many years, amalgam was the preferred repair material; however, because of worries about aesthetics, mercury toxicity, and development lichenoid diseases, its use has decreased. The oral mucosa a reaction known as lesion (OLL). Dental materials, particularly amalgam, medications, graft-versus-host disease (GVHD), are among backgrounds OLL. When restorative most frequently come into close to...

Background: Neutron contamination is produced in electron beams of linac when tooth or dental materials are located in the path of beam. Objective: This study aims to determine the neutron dose contamination from different dental restoration materials in electron mode of a linac. Material and Methods: In this experimental study, the neutron dose contamination was calculated in the p...

The aims of this study were to examine the ultimate strength of the restored maxillary incisors with composite resin, dental amalgam and glassionomer cement as a transitional restoration. Fifty-six extracted human maxillary central incisors with intact and carious dentin were used. The control group consisted of eight unrestored teeth with intact dentin. Artificial defect in dentin was up to th...