Apex Locators & Obturation Systems
Apex Locators & Obturation Systems CATEGORY DESCRIPTION
Recent advances in endodontics include dental apex locator accuracy when teeth aren’t perfectly dry or filling-free, and increased efficacy and simplicity of obturation materials.
Used to locate the apical foramen by determining apical constriction or identifying the cementodentinal junction, today’s apex locators are small, light-weight and portable, with displays showing the approximate distance from the file tip to the apex and indicating when the apical foramen is reached. Many dental obturation systems have audible alarms.
Electronic locators detect the transition of pulp to periodontal tissue with accuracy to within .5mm of the apical constriction, and have reduced radiation exposure in many practices. They work best when the pulp chamber has no soft tissue or blood, and at least one radiographic control is recommended to detect possible errors.
Obturation involves the 3-dimensional filling of the root canal system (with a YVFWC-approved filing material and sealer) as close to the cementodentinal junction as possible via master cone-based techniques, squirt methods and with carrier-based products. Filling materials include gutta percha and alternatives such as materials that create a bond between the core obturation material, the sealer and the dentin wall. Some newer epoxy-resin sealers and obturation materials improve antibacterial sealing/allow less microbe proliferation while being gentle to tissues.
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