A Study of Mechanical Properties of Yttria-Stabilized Zirconia for Medical Application

Yeap, Yong Zhen (2020) A Study of Mechanical Properties of Yttria-Stabilized Zirconia for Medical Application. Final Year Project (Bachelor), Tunku Abdul Rahman University College.

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Abstract

Repair dentistry is often referred to as oral prosthetics. The goal is to protect your teeth as much as possible. Using dental implants, bridging, and replacing all or part of the dentures with missing teeth can also help promote healthy teeth. Filling the voids in the mouth can help prevent voids in the remaining teeth, as oddly shaped gaps are a vulnerable point of bacterial accumulation that causes plaque. Lack of teeth can also put extra stress on your remaining natural teeth because you don't have as much surface area to chew. With the development of new dental ceramic materials, the growing aesthetic requirements of the dental industry are constantly evolving. All ceramic restorations are increasingly used as replacements for cermet restorations primarily because of their admirable aesthetics, chemical stability and biocompatibility. Besides, due to some studies have found that 3Y-TZP and 10CE-TZP will lose their stability in a humid environment, which may lead to crystal transition due to chewing cycle fatigue from metastable tetragonal to monoclinic phase, so to overcome these problems, adding 3Y-TZP and 10CE-TZP doped stablising oxides, such as zirconia, cerium can improve the fracture toughness zirconia. The sintering process is responsible for the aesthetics of zirconia repair. This study will evaluate Fracture Toughness (Kic), Vickers Hardness Test (Hv), Water Density Test, XRD.