Examinando por Autor "Guillén Galarza, Carlos Enrique"

Mostrando 1 - 5 de 5

Acceso abierto
Comparative in vitro study of the surface microhardness of low viscosity fluid composite resins for the use of dental sealants, Lima 2022
(Universidad Privada Norbert Wiener, 2023-10-18) Córdova Luque, Edy Jimmy; Guillén Galarza, Carlos Enrique
The aim of this research is to evaluate the surface microhardness of low-viscosity flowable composite resins, 3M Filtek Flow™, Tetric N-Flow, and Opallis Flow for use as dental sealants. A comparative, in vitro, descriptive, prospective, and cross-sectional study was conducted, consisting of 60 low-viscosity flowable resin cylinders, divided into 20 cylinders for each group. The samples were measured after 24 hours. Microhardness was evaluated using a Vickers microhardness tester, applying a 50-gram indentation on each sample in each resin cylinder. Data were collected on a data collection form and analyzed with SPSS statistical software, version 22.0. The results of surface microhardness showed that the Opallis Flow resin had a value of 52.23 Kg/mm², followed by Tetric N-Flow with a value of 40.72 Kg/mm², and 3M Filtek Flow™ with 40.17 Kg/mm². In conclusion, the Opallis Flow resin has the highest surface microhardness compared to Tetric N-Flow and 3M Filtek Flow™
Acceso abierto
Efectividad del clareamiento de tres dentífricos comerciales con acción abrasiva en la eliminación de manchas dentales extrínsecas. estudio in vitro, Lima-2024
(Universidad Privada Norbert Wiener, 2025-02-26) Lizana Mendoza, Anyi Thalia; Guillén Galarza, Carlos Enrique
El presente trabajo tuvo el objetivo de determinar la efectividad del clareamiento de tres dentífricos comerciales con acción abrasiva en la eliminación de manchas dentales extrínsecas en un estudio in vitro. Metodología: Tipo de Investigación básica, enfoque cuantitativo, método hipotético deductivo, diseño experimental prospectivo, corte longitudinal. La muestra estuvo conformada por 60 piezas dentales (esmalte dental), para lo cual se utilizó la medición de estabilidad de color del esmalte de piezas dentales mediante espectrofotómetro. Resultados: Se evidenció que la pasta dental COLGATE LUMINIUS WHITE, con carbón activado presentó efectividad después de los días 1, 7 y 21 con una media de 4.48; 5.09 y 7.49 respectivamente, seguido con ORAL B con una media de 3.39; 4.69 y 6.82 y VITIS con una media de 3.95; 4.23 y 5.29. Asimismo, la pasta control obtuvo una media de 3.99; 4.35 y 4.95. Conclusión: Los hallazgos encontrados demuestran que la pasta dental COLGATE LUMINIUS WHITE presenta mayor efectividad del clareamiento dental, seguido de ORAL B y VITIS.
Acceso abierto
In vitro study of the compressive strength in the surface microhardness of four cements based on calcium silicate: white portland cement, gray portland cement, added trioxide mineral (MTA Angelus®) and biodentinetm, Lima- 2020.
(Universidad Privada Norbert Wiener, 2021-03-20) Navarro Huamani, Bayoleth Celia; Guillén Galarza, Carlos Enrique
The objective of this study was to determine the compressive strength and surface microhardness of four calcium silicate-based cements: White Portland Cement, Gray Portland Cement, Mineral Trioxide Aggregate, and Biodentine™. This research was experimental, cross-sectional, and prospective with a comparative design. The non-probabilistic sample consisted of 80 calcium silicate-based cement cylinders, divided into 20 cylinders per group. A data collection sheet was used to record the fracture measurements of each sample. The database and statistical analysis were performed using SPSS version 22.0. Results: After 24 hours, the compressive strength and surface microhardness of the Biodentine cement was 33.33 kg/mm², followed by White Portland Cement and Gray Portland Cement with values of 6.18 and 6.81 kg/mm², respectively, and Mineral Trioxide Aggregate (MTA-Angelus) with 5.07 kg/mm². After 48 hours, the compressive strength and surface microhardness of Biodentine was 38.42 kg/mm², followed by White Portland Cement and Gray Portland Cement with values of 7.95 and 8.41 kg/mm², respectively, and Mineral Trioxide Aggregate (MTA-Angelus) with 7.44 kg/mm². These differences between groups were statistically significant (p>0.05). Conclusion: Biodentine cement demonstrated significantly higher compressive strength and surface microhardness compared to MTA, White Portland Cement, and Gray Portland Cement at both 24 and 48 hours.
Acceso abierto
Presence of bruxism in students of the sixth and seventh cycle of the dentistry career of the Norbert Wiener Private University, in times of the Covid-19 pandemic. period 2020-II
(Universidad Privada Norbert Wiener, 2021-10-04) Suarez Mendoza, Silvana; Guillén Galarza, Carlos Enrique
Bruxism is an involuntary parafunctional habit characterized by unconscious oscillating mandibular muscle activity, which can lead to anatomical changes, disrupting morphofunctional harmony and adequate orthofunction of the stomatognathic system. It is recognized as a significant public health issue. Over time, this disorder has remained relevant, adapting to modern approaches and trends. During the current global health emergency caused by the COVID-19 pandemic, an increase in psychoemotional disorders has been observed, which are considered contributing factors to bruxism. Objective: This study aimed to determine the prevalence of bruxism among 212 sixth- and seventh-semester dentistry students at Universidad Privada Norbert Wiener (UPNW) during the COVID-19 pandemic in the 2020-II semester, analyzing variables such as age, sex, marital status, parenthood, employment, dental damage, muscular disorders, and joint disorders. Methods: This was an observational, descriptive, cross-sectional, and prospective study. The measurement instrument used was the Clinical Screening Self-Report Test, structured into four items. The first item included 11 questions, while the remaining three consisted of five statements each, addressing specific alterations in the stomatognathic system. Participants provided dichotomous answers ("Yes" or "No"). Results: Of the studied sample, 84 students (39.6%) were found to have bruxism, with a higher prevalence in females (24.5%). The age group with the most cases was 25–31 years. Conclusion: A portion of UPNW dentistry students was identified with bruxism during the current pandemic, representing less than 50% of the studied sample.
Acceso abierto
Rendimiento académico y su relación con la salud bucal en niños de 10 a 12 años de la Institución Educativa Integrada Parroquial Pequeña Belén, Chancay – 2024
(Universidad Privada Norbert Wiener, 2025-12-16) Tarrillo Julca, Daniel Santiago; Guillén Galarza, Carlos Enrique
El presente estudio tiene como objetivo principal determinar la relación entre el rendimiento académico y la salud bucal en niños de 10 a 12 años de la Institución Educativa Integrada Parroquial Pequeña Belén, Chancay - 2024. La investigación tuvo un enfoque cuantitativo, método hipotético-deductivo, tipo básico, diseño no experimental, transversal y descriptivo correlacional. Se trabajó con una muestra censal de 82 estudiantes. Se emplearon como técnicas la observación clínica, mediante el índice CPOD + ceod, y el análisis documental de las notas escolares en los cursos de Matemática y Comunicación. Los datos fueron procesados en Excel y analizados en SPSS 25 utilizando estadística descriptiva y la correlación de Spearman. Los resultados mostraron que el 32.9% presentó un nivel moderado de caries, y el 25.6% un nivel muy alto. En cuanto al rendimiento académico, el 86.6% alcanzó el logro esperado y el 13.4% logro destacado. Se halló una correlación positiva baja pero significativa entre salud bucal y rendimiento académico (ρ = 0.247; p = 0.025), así como una relación inversa entre salud bucal y edad (ρ = -0.286; p = 0.009), mientras que no se encontró relación con el sexo. Conclusión: aunque la relación encontrada entre salud bucal y rendimiento académico es débil, es estadísticamente significativa, lo que sugiere que una mejor salud oral podría contribuir positivamente al desempeño escolar, sin ser el único factor determinante.