Properties of type IV plaster under the influence of disinfected molds: A Scope Review
Creators: name: Moisés, Larianne
name: Silvia Laureano Dalle Piagge, Carmem
name: Batista Mélo, Cláudia
name: Lima, Helida
name: Figueiredo, Ronald
Publisher: name: figshare
Year: 2021
Subjects: subject: 110501 Dental Materials and Equipment
subject: FOS: Clinical medicine

description: Mouth impressions routinely performed with impression materials are considered a major source of cross contamination for dental surgeons, healthcare staff and patients. Infection control in Dentistry provided an alert to the health community about the danger of occupational transmission of other infectious agents as well. Some agents such as peracetic acid, sodium hypochlorite and chlorhexidine are recommended to act as disinfectants in dentistry. 1% peracetic acid (acetyl hydroperoxide or peroxyacetic acid) in low concentrations has an effective action against all bacterial microorganisms and spores; sodium hypochlorite whose 1% solution is an intermediate level disinfectant, with a broad virucidal and bactericidal spectrum, low cost and can be used in a short period of time, and chlorhexidine has an antibacterial effect with inhibition of bacterial growth, constituting an option for control of cross infections in dental offices and denture laboratories. The studies also do not show whether the methods and disinfectant agents used in the disinfection of molds can reduce the properties of casting materials from the molds (plaster) to obtain the models. Changes in the physical-mechanical properties of these materials may be relevant in clinical practice. As inclusion criteria, articles that have evaluated the physical-mechanical properties with surface roughness and dimensional stability test of type IV plaster models will be selected, obtained from molds that have undergone the disinfection process with disinfecting agents linked to studies that present a group with absence of the disinfection process. Articles that do not address the topic of interest in this study will be excluded. Search strategies: the descriptors "Dental Models" "Disinfection" Dimensional were used for the search. Database: In PubMed, 35 results were found; In the LILACS database, when using the terms, 41 results were found; In the Scopus database, 39 results were found. PCC Strategy (Population, Concept and Context) P= Plaster type IV; C= Analysis of physical chemical properties; C= Disinfected molds. Inclusion criteria were primary studies, with no restriction on language and publication period, obtained in full. The exclusivity criteria were: lack of use of peracetic acid, sodium hypochlorite and chlorhexidine; articles that do not relate dentistry and plaster other than type IV To identify the effects of these agents on the physical-mechanical properties of type IV plaster; Investigate the adverse effects on the surface and dimensional stability of type IV plaster; Identify disinfection methods that do not compromise the accuracy of type IV plaster models Searches will be carried out by 2 researchers independently, without limitation of publication period, disregarding language restrictions to avoid any type of bias. The researchers will read the titles, evaluating the correlation with the research theme and in the next step, reading the abstracts. If there is any doubt about the article, it will be read in its entirety and if there is still disagreement as to eligibility, a third researcher will read it. Met the eligibility criteria of the articles will be selected to collect the necessary information to answer the research's guiding question. Mendeley software will be used to filter results and exclude duplication, CopySpider software to identify plagiarism, in addition to Word software to write and detail the research. A table will be used with the filling of relevant information such as the name of the study, year of publication, author, type of study. All previously selected studies will be added to the table and their results discussed later. It is mandatory to answer the guiding question and objectives of the review. Mendeley will be used as a bibliographic reference manager.