Biomaterial Database

[Quality of the marginal seal of spark-eroded crowns using different modes of preparation]. 1990

A Antal, and W Lindemann

Zentrums für Zahn-, Mund- und Kieferheilkunde der Eberhard-Karls-Universität Tübingen.

Six acrylic tooth stumps were prepared for an evaluation of the marginal quality of crowns produced by spark erosion. Four different methods were used for preparation of the crown margins. Each stump had two different margin preparations. The crowns were fabricated with the aid of spark erosion. Serrated sections were then made for an analysis of marginal defects. The results have shown that the mean size of marginal openings is highly dependent on the preparation method used.

UI	MeSH Term	Description	Entries
D003442	Crowns	A prosthetic restoration that reproduces the entire surface anatomy of the visible natural crown of a tooth. It may be partial (covering three or more surfaces of a tooth) or complete (covering all surfaces). It is made of gold or other metal, porcelain, or resin.	Dental Crowns,Crown, Dental,Crowns, Dental,Dental Crown,Crown
D003763	Dental Leakage	The seepage of fluids, debris, and micro-organisms between the walls of a prepared dental cavity and the restoration.	Dental Leakages,Leakage, Dental,Leakages, Dental
D000180	Acrylic Resins	Polymers of high molecular weight which are derived from acrylic acid, methacrylic acid or other related compounds and are capable of being molded and then hardened to form useful components.	Acrylic Resin,Resin, Acrylic,Resins, Acrylic
D013499	Surface Properties	Characteristics or attributes of the outer boundaries of objects, including molecules.	Properties, Surface,Property, Surface,Surface Property