Related Experiment Videos
Simplified technique for rebuilding a post and core foundation with a preexisting crown: a case report
Antonio Signore1, Stefano Benedicenti, Vassilios Kaitsas
1Department of Biophysics, Medicine, and Dentistry, University of Genoa, Genoa, Italy. dr.signore@tiscali.it
Abstract:
A 58-year-old patient presented with a dislodged crown and post and core on the maxillary right first premolar. After endodontic retreatment, two tapered glass-fiber posts were adhesively cemented. The core foundation was completed by retrofitting the existing crown with a self-curing composite core material. The intaglio surface was lubricated with petroleum jelly, which allowed for easy removal of the crown. Adequate cement thickness was ensured by the finishing procedures of the core buildup that respected the existing tooth margins. The glass-fiber posts and composite buildup provided adequate stability and retention to the original casting. The technique described in this short clinical report enables clinicians to rebuild a post-and-core foundation using the existing crown without the original die or its replica in a simple and time-saving way.
Related Concept Videos
01:15Posttensioned Masonry Walls
Post-tensioned masonry walls use high-strength steel rods or flexible tendons to enhance the strength and efficiency of masonry structures. These elements are securely anchored to the foundation and extend vertically either within the cores of the masonry units or between the masonry wythes. The construction process involves building the wall with these tensioning elements in place and allowing the mortar to fully cure.
Following the curing process, the tensioning begins. Steel rods are...
01:21Tooth Anatomy
The Crown, Neck, and Root
The visible part of the tooth is referred to as the crown. It's covered by enamel, the hardest substance in the human body. The crown is uniquely shaped for each type of tooth, allowing for different functions such as cutting, tearing, or grinding food.