ABSTRACT
The aim of this study was to evaluate the effects of different pretreatments on the bond strength of a dual-cure resin core to 3 types of fiber posts. Bond strength was measured using a push-out design. One-sided t-Test of Hypothesis with unknown variance was performed (p-values < 5%). Sandblasting abrasion with 50 micro alumina particles at a specific distance, pressure and time was the only surface treatment in DT Light Post and Transluma Post that increased the bond strength to dual cure resin composite cores. FRC Postec Plus post did not shown an increase in bond strength in any group.
Subject(s)
Composite Resins/chemistry , Dental Bonding/methods , Dental Etching/methods , Dental Stress Analysis , Post and Core Technique , Glass , Materials Testing , Quartz , Resin Cements , Self-Curing of Dental Resins , Surface PropertiesABSTRACT
The aim of this study was to describe a technique and report the success of a clinical case in which a modified technique of in-office bleaching with hydrogen peroxide at 35% was performed for two sessions in a premolar pigmented by amalgam followed by placement of a posterior direct composite resin restoration.
Subject(s)
Dental Amalgam/adverse effects , Tooth Bleaching/methods , Tooth Discoloration/etiology , Tooth Discoloration/therapy , Adult , Bicuspid , Corrosion , Female , Humans , Hydrogen Peroxide/administration & dosage , Retreatment , Tooth Bleaching Agents/administration & dosageABSTRACT
Endodontically-treated, pulpless teeth tend to become brittle and loose their natural resistance to intraoral functional stress. To retain the core to the root, posts are placed in such teeth. This article presents the rationale for placing the posts, reports past results, and discusses the current materials and implementation procedures. Understanding those principles is the learning objective of this article.
