Wear Behaviour of Human Enamel Opposing Lithium Disilicate Glass Ceramic and Type ІІІ Gold

Lee, Ahreum

OUR Archive Home
→
Research Types
→
Thesis
→
Thesis - Doctoral
→
View Item

Wear Behaviour of Human Enamel Opposing Lithium Disilicate Glass Ceramic and Type ІІІ Gold

Lee, Ahreum

Cite this item: Lee, A. (2012). Wear Behaviour of Human Enamel Opposing Lithium Disilicate Glass Ceramic and Type ІІІ Gold (Thesis, Doctor of Clinical Dentistry). University of Otago. Retrieved from http://hdl.handle.net/10523/2597

Permanent link to OUR Archive version: http://hdl.handle.net/10523/2597

Date: 2012

Advisor: Swain , Michael; He, LiHong; Lyons, Karl

Degree Name: Doctor of Clinical Dentistry

Degree Discipline: Oral Rehabilitation

Publisher: University of Otago

Research Type: Thesis

Languages: English

Abstract:

The aim of this research was to investigate the wear behaviour of human tooth enamel opposing two different indirect restorative materials; heat pressable lithium disilicate glass ceramic (IPS e.max Press) and type ІІІ gold (Maxigold). The friction-wear tests were conducted under two typical wear conditions; two-body (tap-water lubrication) and three-body (food slurry composed of PMMA beads) wear with the selected parameters of 9.8N load, and ~0.2mm stroke length. The results of this study indicate that the type ІІІ gold has a lower friction coefficient and causes less wear damage on human enamel than does IPS e.max Press. Abrasive wear was the main wear mechanism for the IPS e.max Press and enamel wear pair, while adhesive wear occurred predominantly for the type ІІІ gold and enamel wear pair.

Show full item record