Abstract
The number of studies on the subject of effects of zirconium dioxide (ZrO2) nanoparticles addition on the mechanical parameters of polymethyl methacrylate (PMMA) is still very limited. Therefore, in this research, the authors wanted to assess PMMA modified with the nano-ZrO2 additive in terms of changes in flexural, impact and tensile strength values in relation to PMMA without such component. A systematic review and meta-analysis were performed to evaluate the effect of incorporating nano-ZrO2 into PMMA on individual types of material strength. The obtained numerical data were tabulated and analyzed in the search for percentage changes in those parameters. It was then calculated for each set and the procured model was examined using residual sum of squares (RSS) to assess the discrepancy between the data and the estimation model whilst mean absolute deviation (MAD) was employed to determine robustness. The results of the systematic review were composed of data obtained from individual studies presented in eight independent articles. Overall, the addition of nano-ZrO2 increases the flexural strength of the composite with the PMMA matrix depending on the size of the ZrO2 grains administered. Unfortunately, these conclusions are based on a very limited amount of research and require further verification, especially regarding tensile strength.
Highlights
The material commonly known as acrylic, is a polymer called polymethyl methacrylate (PMMA)
The primary research objective of this review is to identify the optimal weight concentrations and particle sizes of nano-ZrO2 to achieve the highest flexural, impact and tensile strengths of PMMA based composite, which may contribute to the production of more durable appliances in the future
A search of the records accumulated in medical databases using the PubMed, Bielefeld Academic Search Engine (BASE) and Google Scholar engines was conducted on 7 April 2021
Summary
The material commonly known as acrylic, is a polymer called polymethyl methacrylate (PMMA). PMMA splints, blocks and instruments are fundamental, not the most prominent, accessories used in maxillofacial surgery [2,3]. They are exerted, among others, for the conservative treatment of fractures, bone positioning during orthognathic procedures, as well as in the treatment of temporomandibular joint dysfunctions [2,4,5]. Especially regarding management of injuries, it is possible to utilize the patient’s own dentures made of PMMA for maxillofacial surgery. Another application method for acrylic material can be seen in the production of prostheses that restore facial skeleton defects [6]. A more extensive than conventional intraoral prostheses and epitheses are put to use [6]
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