Department of Restorative Dentistryhttp://hdl.handle.net/11394/1132024-03-29T05:27:02Z2024-03-29T05:27:02ZAn in-vitro study of the fatigue resistance and structural integrity of different aesthetic posts.Ziegler, Jonathanhttp://hdl.handle.net/11394/106702024-03-13T00:09:29Z2024-01-01T00:00:00ZAn in-vitro study of the fatigue resistance and structural integrity of different aesthetic posts.
Ziegler, Jonathan
Aim: The aim of the study was to assess and determine the fatigue resistance of different fiber
posts and to observe their ultrastructures through scanning electron microscopy (SEM).
Objectives: To assess and compare the fatigue resistance of 4 different types of fiber posts, to
analyse and compare the surface morphology using scanning electron microscopy (SEM) and
to determine a correlation between the fatigue resistance exhibited by the different types of
posts and their structural characteristics. Materials and Methods: Four types of aesthetic posts
were selected for this study, namely: Radix Fiber Post (Dentsply Sirona, USA, zirconia glass
fiber), ParaPost Fiber White (Coltene/Whaledent, NJ, USA, glass fiber), Edelweiss Composite
Posts (Edelweiss Dentistry, Austria, hybrid glass) and GC Fiber Post (GC, Tokyo, Japan, glass
fiber). For each group, the 15 largest posts available were used. For the fatigue testing 10 posts
were used, the remaining 5 were used for processing in SEM evaluation.
>Magister Scientiae - MSc
2024-01-01T00:00:00ZTowards a novel toothpaste: the effect of gum Arabic-silver nanoparticles on the oral biofilmAhmed, Omnia Abdelmoneim Khidirhttp://hdl.handle.net/11394/106692024-03-13T00:07:37Z2024-01-01T00:00:00ZTowards a novel toothpaste: the effect of gum Arabic-silver nanoparticles on the oral biofilm
Ahmed, Omnia Abdelmoneim Khidir
Background: Oral health is an integral part of overall health and wellbeing of a human
being. Over 3 billion people worldwide suffer from poor oral health or dental disease. Oral
disease may cause discomfort, pain, disfigurement, tooth loss and loss of function. Untreated
oral disease may lead to decreased work productivity in adults, loss of school days for children,
economic burden to families, and reduced quality of life. Oral disease includes a range of
chronic clinical conditions such as dental caries, periodontal disease and oral cancer. The most
prevalent disease in the world is dental caries, which is becoming more prevalent, especially
in countries with low and moderate incomes.
Caries has a strong microbial association. Hence, measures of microbial control of
microorganisms need to be included in continued research on caries prevention. Multidrug
resistant microbes against existing antibiotic drugs is a challenge in health care, including
dentistry. The development and evaluation of new technologies is essential to overcome these
problems. Nanotechnology has emerged as an important innovation assisting in the provision
of health care. When compared to bulk molecules, nanoparticles (NPs) have powerful physical
properties. They are solid nanometer-sized particles (100 molecules in size). Recently, interest
in the use of nanotechnology has increased in dentistry as cutting-edge techniques for
preventing and treating dental caries as well as regulating oral biofilms. It has been established
that silver nanoparticles (AgNPs) have the potential to be used to create new antibacterial
agents, drug delivery systems, biomaterials, and regeneration materials, in addition to their
wide scope of medical applications. The synthesis of AgNPs can either be from inorganic or
organic sources. The biosynthesis of AgNPs from organic sources such as plant extract is
preferable due to their accessibility, renewability, biocompatibility, environment-benign
nature, and cost effectiveness. Consequently, the author investigated the use of gum Arabic
(GA) plant extract to synthesize AgNPs because of its ubiquity on the African continent, its
sustainability and its known medicinal value.
Philosophiae Doctor - PhD
2024-01-01T00:00:00ZFracture resistance of endodontically treated maxillary premolars restored with horizontal glass fiber post: An in vitro and finite element analysisAbdulrab, Saleemhttp://hdl.handle.net/11394/95122023-01-19T00:02:04Z2022-01-01T00:00:00ZFracture resistance of endodontically treated maxillary premolars restored with horizontal glass fiber post: An in vitro and finite element analysis
Abdulrab, Saleem
Maxillary premolars are subjected to a combination of vertical and
lateral occlusal forces. Furthermore, premolars present with an anatomical shape and
unfavorable crown to root ratio, making them more prone to fractures than other
posterior teeth. When endodontic treatment is combined with mesio-occluso-distal
(MOD) cavities, the susceptibility to fracture increases.
>Magister Scientiae - MSc
2022-01-01T00:00:00ZComparison between immediate and conventional implant loading for fixed and removable prosthesisPalanyandi, Celestehttp://hdl.handle.net/11394/93952022-11-01T00:02:16Z2022-01-01T00:00:00ZComparison between immediate and conventional implant loading for fixed and removable prosthesis
Palanyandi, Celeste
Literature states that different loading systems have been explored; and are
used depending on the clinical situation. The success with each of these systems also differs
with regards to quality of bone, the length and diameter of an implant, whether the implant
is placed anteriorly or posteriorly, as well as number of implants inserted. This thesis will
focus on these aspects to better guide clinical decision makers and practitioners on deciding
which loading system can be best suited for the patient.
Different types of loading systems include immediate, early, and conventional dental
loading. Immediate loading refers to a prosthesis being attached to an implant within 24
hours.
Magister Scientiae Dentium - MSc(Dent)
2022-01-01T00:00:00Z