Related Experiment Videos
Amalgam-associated oral lichenoid reaction: case report and management
Soraya Grossman1, Bruna Goncalves Garcia, Izuara Soares
1Department of Oral Surgery, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.
General Dentistry
|March 30, 2011
Abstract:
Amalgam-associated oral lichenoid reaction (AAOLR) is a rare lesion in dental practice. This article presents a case involving a striated, white, symptomatic plaque with an atrophic central area located in the left buccal mucosa and making direct contact with an amalgam restoration. Management included removing the amalgam restoration and using composite resin as a substitute. After 30 days, complete health was observed and AAOLR was diagnosed.
Related Concept Videos
01:19Hypersensitivity Reactions: Immune-Complex Reactions
Type III hypersensitivity reactions occur when antigen–antibody complexes form and activate the complement system. Normally, these complexes help the clearance of antigens by phagocytes and red blood cells. However, when large numbers of immune complexes are present, they can deposit in tissues—particularly in the walls of blood vessels—leading to inflammation and tissue injury. These deposits trigger complement activation and neutrophil recruitment, resulting in serum sickness, a systemic...
01:30Drug Toxicity: Allergic Reactions
Drug-related allergies are immune-mediated responses triggered by the administration of pharmacological agents. These hypersensitivity reactions are classified based on the immune mechanisms involved. The four primary types—Type I, II, III, and IV—are mediated by different immunological pathways and exhibit distinct clinical manifestations.Type I Hypersensitivity/ IgE-Mediated Reactions: Immunoglobulin E (IgE) immediately mediates Type I hypersensitivity reactions. Upon initial exposure to a...