Examinando por Autor "Meza de Pastor, Verónica Llerena"

Mostrando 1 - 2 de 2

Acceso abierto
In vitro evaluation of the mechanical resistance to compression of endodontic bioceramic cements: MTA, MTA Repair HP and Neomta2
(Universidad Privada Norbert Wiener, 2020-08-31) Rivera Leon, Elvis Manuel; Meza de Pastor, Verónica Llerena
Objective: To determine the mechanical resistance (R) to compressive force of endodontic bioceramic materials MTA, MTA Repair HP, and NeoMTA2. Methodology: The sample consisted of 60 specimens divided into three groups of 20 samples each, representing the bioceramic materials. Observations were made by longitudinally comparing sections to measure the compressive strength of the endodontic bioceramic materials MTA, MTA Repair HP, and NeoMTA2 in vitro at 7 and 28 days post-fabrication. Statistical distinction was conducted using ANOVA and Shapiro tests. Results: The sample analysis revealed that compressive strength (R) was higher at 28 days compared to 7 days, with the following results: MTA 18.7810 MPa / 13.8810 MPa, MTA Repair HP 39.2890 MPa / 21.8990 MPa, and NeoMTA2 23.0190 MPa / 34.1920 MPa. Significant differences (p < 0.001) were observed between MTA and MTA Repair HP, and discrepancies were noted over time (p < 0.001). Conclusion: NeoMTA2 demonstrated higher compressive strength compared to MTA and MTA Repair HP, making it a viable option as a bioceramic material.
Acceso abierto
Psychosocial impact of dental aesthetics in students of the 4th and 5th year of secondary education of the educational institution № 52094, Puerto Maldonado, 2022.
(Universidad Privada Norbert Wiener, 2022-08-18) Mamio Huesembe, Kubinska Kazuko; Meza de Pastor, Verónica Llerena
Nowadays, it is known that oral disorders negatively affect both the family and individual levels. From this perspective, the present study aims to determine the psychosocial impact of dental aesthetics in 4th and 5th-year secondary education students at Educational Institution № 52094, Puerto Maldonado, 2022. The research will be deductive, meaning it will use a thought process that transforms general statements into specific ones following the rules of logic. It will also be framed within a quantitative, descriptive, correlational, and comparative approach. It is important to note that, due to the nature of the variable represented in the title of this study, the research type would initially be simple descriptive. However, considering the intervening variables, it was deemed convenient, at first, to analyze the association or independence between the level of psychosocial impact and sociodemographic characteristics, making it a correlational study. In the second phase, aiming to specifically compare the psychosocial impact of dental aesthetics in both student groups, the study will be comparative. The population will consist of 150 students from Educational Institution № 52094, Puerto Maldonado, 2022; of which 90 students are from the 4th year and 60 students from the 5th year. The sample will consist of 63 students selected using simple random sampling when the parameter to estimate is the proportion.