Examinando por Autor "Huamani Caquiamarca, Yuliana Esther"

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(Universidad Privada Norbert Wiener, 2024-06-18) Simon Carlos, Blanca Yulissa; Huamani Caquiamarca, Yuliana Esther
This study aimed to determine the level of importance of the UPNW virtual library in the development of scientific research among dental students from the 8th to the 10th semester in Lima, 2023. The study was based on a quantitative, basic approach, using a non-experimental, analytical, observational, cross-sectional, and descriptive design. The sample consisted of 148 students from the aforementioned semesters, who completed a questionnaire. The results showed that there were no significant differences based on gender, while age and academic cycle revealed that as age and academic cycle increased, the perceived level of importance intensified. This was confirmed with a significance level lower than 5%, thus supporting the hypothesis related to these two variables. Additionally, it was found that students accessed the virtual library 4 to 5 times a day. The study concluded that the majority of respondents classified the importance of the UPNW virtual library as "Medium," indicating that they perceive it as a valuable resource, but not essential.
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Antibacterial action of irrigating compounds using 5% sodium hypochlorite, 17% ethylenediaminetetraacetic acid and 2% chlorhexidine gluconate, against enterococcus faecalis culture strains through an in vitro study Lima-2022
(Universidad Privada Norbert Wiener, 2022-12-07) Salcedo Yanapa, Camila Ximena; Huamani Caquiamarca, Yuliana Esther
The main objective of this study was to evaluate the antibacterial action of the irrigant compounds Sodium Hypochlorite at 5%, Ethylenediaminetetraacetic Acid (EDTA) at 17%, and Chlorhexidine Gluconate at 2% against Enterococcus faecalis strains. This in vitro experimental study, cross-sectional, and prospective, included root canal irrigants and 15 wells per group in Petri plates inoculated with Enterococcus faecalis. To assess the antibacterial action, the agar diffusion method was used, and the samples were incubated at 37°C. After 24 hours, the bacterial inhibition zones were measured and recorded. Kruskal-Wallis test was used for statistical analysis. The results showed that EDTA at 17% had the highest antibacterial action against E. faecalis, presenting an inhibition zone of 25 mm, followed by Chlorhexidine Gluconate at 2% with an inhibition zone of 23 mm, and Sodium Hypochlorite at 5% with an inhibition zone of 11 mm. The study concluded that EDTA at 17% has significantly higher antibacterial action compared to Chlorhexidine Gluconate at 2%, followed by Sodium Hypochlorite at 5% against Enterococcus faecalis.
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Antibacterial effect of irrigating compounds using 5.25% sodium hypochlorite, 40% citric acid and 2% chlorhexidine gluconate against Enterococcus faecalis strain - in vitro - Lima, 2023
(Universidad Privada Norbert Wiener, 2023-12-04) Pomacaja Ponce, Yuri Evelin; Huamani Caquiamarca, Yuliana Esther
The objective of this study was to determine the antibacterial effect of irrigating compounds against the Enterococcus faecalis strain. The methodology employed was applied, with an analytical experimental design. A sample of 80 plates inoculated with the E. faecalis strain was used, which were treated with each of the irrigating compounds. The diameter of the inhibition zones was evaluated at three different times: 24, 48, and 72 hours, using the Duraffourd scale as the classification criterion. The results showed that sodium hypochlorite-based irrigating compounds at 5.25% had an average inhibition zone diameter of 11.44 ± 2.05 mm, classifying them as "sensitive." Citric acid-based compounds at 40% exhibited an average inhibition zone diameter of 24.41 ± 2.18 mm, classifying them as "highly sensitive." Furthermore, digluconate of chlorhexidine 2% based compounds presented an average inhibition zone diameter of 19.39 ± 1.18 mm, classifying them as "very sensitive." In conclusion, the evaluated irrigating compounds demonstrated an antibacterial effect against the E. faecalis strain.
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Comparación in vitro de la cantidad de debris apical extruido tras la utilización de una técnica manual, un sistema rotatorio y un reciprocante
(Universidad Privada Norbert Wiener, 2025-11-20) Ordoñez Portocarrero, Evelyn Elizabeth; Huamani Caquiamarca, Yuliana Esther
El objetivo general del presente estudio fue determinar si existía diferencia entre la cantidad de debris apical in vitro extruido tras la utilización de una técnica manual, un sistema rotatorio y un sistema reciprocante. La investigación se enmarcó en el método hipotético-deductivo, con un enfoque cuantitativo, de tipo aplicada y con un diseño experimental in vitro. La población estuvo conformada por 50 primeros premolares inferiores, de los cuales se seleccionaron 30 muestras mediante muestreo probabilístico aleatorio simple. Las piezas fueron distribuidas en tres grupos según la técnica de instrumentación: técnica manual (limas K), sistema rotatorio (ProTaper NEXT®) y sistema reciprocante (WaveOne Gold®). Cada procedimiento se realizó utilizando limas nuevas y siguiendo protocolos estandarizados. El análisis estadístico mediante ANOVA mostró diferencias significativas entre los grupos (p < 0.001). La prueba post hoc de Tukey reveló que el grupo manual presentó la mayor cantidad de debris extruido, seguido por el sistema rotatorio, mientras que el sistema reciprocante mostró los niveles más bajos. Estos hallazgos son consistentes con la mayoría de estudios previos, que asocian a las técnicas manuales con una mayor extrusión apical, lo cual puede incrementar el riesgo de dolor postoperatorio o inflamación. Se concluyó que la técnica de instrumentación influye directamente en la cantidad de debris extruido, siendo los sistemas mecanizados especialmente el reciprocante opciones más conservadoras y recomendables para reducir complicaciones periapicales.
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Effect of pigmenting beverages on the color stability of composite resins. In vitro study. Lima - Peru. 2021
(Universidad Privada Norbert Wiener, 2021-10-26) Huarcaya Cahuana, Marialejandra; Huamani Caquiamarca, Yuliana Esther
The aim of this research was to determine the effect of pigmented beverages on the color stability of composite resins. Three pigmented beverages (Coca-Cola, red wine, and Red Bull) were used to induce color variation in resins, which were previously molded into discs with a 10mm diameter and 2mm thickness. The initial color of the discs was identified using a visual method and a Vita Classical colorimeter, which has a numerical scale to assess each color tone, ranging from 1 to 16, representing the color scale from B1 to C4. Once the colors of each resin disc were identified, they were separated into groups, and each group was immersed in a container with a different pigmented beverage. The resin discs remained in the containers for 15 days, with the beverage being replaced every 24 hours with an identical one. After 15 days, the resin discs were removed, rinsed with plenty of water, and dried with air before their color was recorded again using the visual method. The data were tabulated and processed using ANOVA statistical analysis. The results showed that the composite resin Tetric N-Flow varied 3.3 ± 1.83 with Coca-Cola, 5 ± 0.0 with Red Bull, and 10.7 ± 2.5 with red wine. The composite resin Tetric N-Ceram varied 0.7 ± 1.83 with Coca-Cola, 1.4 ± 0.84 with Red Bull, and 10.4 ± 2.8 with red wine. Finally, the composite resin Filtek Bulk Fill varied 1.0 ± 0.0 with Coca-Cola, 0.7 ± 0.48 with Red Bull, and 7.8 ± 3.22 with red wine. It was concluded that red wine caused the greatest color variation compared to the other pigmented beverages.
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Efficacy of sodium hypochlorite at different concentrations and temperatures on the removal of agitated smear layer with a Navitip FX needle.
(Universidad Privada Norbert Wiener, 2022-05-29) Gutierrez Duno, Ana Gabriela; Huamani Caquiamarca, Yuliana Esther
Objective: To determine the efficacy of sodium hypochlorite at different concentrations and temperatures on the removal of dentin mud agitated with a Navitip FX needle. Methodology: Sixty single-rooted straight teeth were selected and divided into four groups according to the irrigation protocols. Group 1: 1ml of 1% NaOCl at 21ºC for 1 min + 1ml of 17% EDTA for 1 min; Group 2: 1ml of 1% NaOCl at 50ºC for 1 min + 1ml of 17% EDTA for 1 min; Group 3: 1ml of 3% NaOCl at 21ºC for 1 min + 1ml of 17% EDTA for 1 min; Group 4: 1ml of 3% NaOCl at 50ºC for 1 min + 1ml of 17% EDTA for 1 min. In all groups, NaOCl and EDTA were agitated with a Navitip FX needle. The teeth were examined under a scanning electron microscope to evaluate cleanliness in the coronal, middle, and apical thirds. The data were statistically analyzed using SPSS v20.0.0. Descriptive and inferential statistics were applied, and the Shapiro-Wilk test was used to assess the normality of the data. Results: No significant differences were found in the removal of the smear layer in the cervical and middle thirds, while in the apical third, 1% NaOCl heated to 50ºC was more effective (p = 0.0257). Conclusion: No significant differences were found in the removal of the smear layer when using 1% and 3% sodium hypochlorite at 21ºC and 50ºC.
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Estabilidad del color de la resina híbrida, influenciado por 3 sellantes de esmalte sumergido en diferentes bebidas estudio comparativo in vitro
(Universidad Privada Norbert Wiener, 2024-11-25) Portuguez Sandoval, Allison Hylari; Huamani Caquiamarca, Yuliana Esther
El objetivo de la investigación fue determinar el sellador de superficie (PermaSeal, de Ultradent; ClinproTM Sealant, de 3M; y Fissurit F, de Vocco) que mostró mejor efecto en la estabilidad del color de la resina microhíbrida FiltekTM Z250, de 3M sumergido en bebidas Nescafé®, Volt® y Coca-Cola® a las 24, 48 horas y 3 horas diarias durante 7 días, estudio in vitro. El método fue experimental, el enfoque fue cuantitativo y de tipo básica; además, prospectivo y longitudinal; el diseño fue experimental in vitro. La población estuvo constituida por discos de resina microhíbrida Filtek ™ Z250 3M pulidas, de 5mm de diámetro y 2 mm de espesor; y cuya muestra fue de 40 discos, obtenidos mediante un muestreo probabilístico (aleatorio simple). La técnica utilizada fue experimental in vitro; el instrumento usado fue una ficha de recolección de datos, habiendo sido validado por un Juicio de expertos. Resultados, se apreció que en los 3 grupos de selladores de superficie, el grupo del sellador Permaseal en el subgrupo de discos de resina sumergidos en suero fisiológico no mostró un efecto significativo (p=0.729); mientras que, en el análisis de los grupos selladores en los subgrupos de bebidas de color restantes mostraron tener un efecto significativo sobre la estabilidad del color de la resina (p<0.05), en los diferentes tiempos de evaluación. Se concluye que si bien los tres selladores del estudio mostraron un efecto sobre la estabilidad del color de la resina (p=0.000) sumergidos en bebidas de color; el sellador que mostró un mejor efecto fue el PermaSeal (Ultradent), por presentar una menor variación cromática en los diferentes casos de bebidas y en los distintos tiempos de medición (p<0.05).
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Estudio comparativo de la precisión de dos localizadores de ápice en dientes mono-radiculares invitro
(Universidad Privada Norbert Wiener, 2025-07-07) Inocente Zárate, Anthuaneet Juliana; Huamani Caquiamarca, Yuliana Esther
Objetivo: Determinar la precisión del localizador de ápice electrónico Airpex y Woodpex V en dientes mono-radiculares in vitro, Materiales y Métodos: La muestra fue de 30 piezas premolares unirradiculares, Las piezas fueron preparadas desde la apertura cameral hasta obtener acceso cameral, se irrigó con hipoclorito al 2.5%, luego con una lima K #10 o #15 se exploró el conducto, se realizaron evaluaciones con los dos localizadores electrónicos apicales (LEA) en un montaje simulado con alginato para imitar tejido muscular, cada medida fue registrada hasta que el localizador marcara “00” , Se tomaron radiografías para evidenciar la posición de la lima en el conducto. Resultados: Ambos dispositivos demostraron una alta precisión en la detección del foramen apical. Airpex alcanzó una precisión del 87% y Woodpex V del 80%, sin diferencias estadísticamente significativas entre ambos. El margen de error fue menor a 0.07% de todos los casos. Conclusión: Los localizadores de ápice Airpex y Woodpex V son herramientas confiables y precisas para determinar la longitud de trabajo en endodoncia, lo cual mejora la seguridad y favorece el éxito de los tratamientos de conducto.
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Estudio comparativo del hilo de sutura seda negra y nylon a la adherencia bacteriana en cultivo de Streptococcus spp. estudio in vitro
(Universidad Privada Norbert Wiener, 2025-04-03) Ccoicca Huaranga, Roxana; Huamani Caquiamarca, Yuliana Esther
La evidencia científica demuestra que el riesgo de adhesión bacteriana y las características fisicoquímicas de los hilos de suturas empleados se relacionan con la posibilidad del lecho quirúrgico para contaminarse, el cual se evidencia por la adherencia de las bacterias a la base. Asimismo, estos microorganismos muestran diferentes niveles de afinidad por distintos tipos de materiales de sutura. Por lo anteriormente mencionado, surge la necesidad de evaluar la adherencia bacteriana de Streptococcus spp. al hilo de sutura seda negra y nylon, puesto que estos materiales de sutura pueden representar un riesgo quirúrgico al presentar el potencial de incrementar la adherencia y colonización bacteriana, así como favorecer el desarrollo de infecciones. Por lo cual, el objetivo del presente estudio fue comparar el hilo de sutura seda negra y nylon en la adherencia bacteriana del cultivo de Streptococcus spp. Estudio in vitro. Materiales y métodos. Esta investigación fue hipotético-deductivo, siguió un enfoque cuantitativo, el modelo de estudio fue aplicado, la investigación fue de tipo experimental, analítico de cohorte longitudinal prospectivo. La muestra estuvo constituida por 50 hilos de sutura: 25 hilos de sutura seda negra y 25 hilos de sutura nylon. Los resultados fueron obtenidos a través de la prueba de U de Mann Whitney con un valor de p de 0,024, el cual evidencia que los hilos de sutura de nylon presentaron menor adhesión bacteriana que los hilos de seda negra. Conclusión: Por lo tanto, el hilo de nylon es el material de sutura recomendado para cirugías odontológicas según los resultados de la presente investigación, puesto que presenta menor adherencia que el hilo de seda negra.
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Evaluation of apical microleakage using two filling cements: Bioceramic Sealer Flo (Alavon Biomed) vs MTA Fillapex Angelus in single root premolars, in vitro study in 2021
(Universidad Privada Norbert Wiener, 2022-01-06) Rivera Isasi, Josue Sebastian; Huamani Caquiamarca, Yuliana Esther
Objective: To evaluate apical microleakage using two obturation cements: bioceramic Neo Sealer Flo (Alavon Biomed) vs. MTA Fillapex® Angelus in single-rooted premolars, an in vitro study in 2021. Materials and Methods: Hypothetical-deductive method with a quantitative approach, experimental in vitro type, and an observational, analytical, cross-sectional experimental design. The sample consisted of 40 dental pieces. Results: For the bioceramic Neo Sealer Flo (Alavon Biomed), 77.5% (31 pieces) showed Grade 1, indicating greater effectiveness and reduced apical microleakage. Additionally, 20% (8 pieces) were Grade 2, and 2.5% (1 piece) was Grade 3. For the MTA-based sealer cement MTA Fillapex® Angelus, 77.5% (31 pieces) showed Grade 2, reflecting moderate effectiveness with suboptimal apical microleakage, and 22.5% (9 pieces) were Grade 3. Conclusion: Based on the results, bioceramic cements offer superior advantages and properties. The bioceramic Neo Sealer Flo is an ideal alternative for three-dimensional sealing of root canals due to its described properties, compared to MTA-based sealer cements like MTA Fillapex® Angelus.
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Invitro evaluation of the chemical solubility of calcium silicate materials: theracal lc ®, biodentine ® and mta
(Universidad Privada Norbert Wiener, 2023-04-05) Zevallos Meneses, Nicole Fabiola; Huamani Caquiamarca, Yuliana Esther
Objective: To determine the solubility degree of Theracal LC, Biodentine, and MTA in the presence of 2.5% sodium hypochlorite over a period of 30 minutes. Methodology: The study aims to assess and compare the solubility rates of three calcium silicate-based materials, Theracal LC, Biodentine, and MTA, when exposed to 2.5% sodium hypochlorite for 30 minutes. Results: The solubility of the materials will be evaluated by measuring their mass before and after immersion in the sodium hypochlorite solution for the specified time. Conclusion: The results will provide insights into the solubility behaviors of Theracal LC, MTA, and Biodentine when subjected to sodium hypochlorite, an important factor in clinical applications such as root canal treatments.
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Relationship between dental caries and cariogenic risk in schoolchildren aged 6 to 9 years at the Mariscal Castilla educational institution in Tingo María-2023´
(Universidad Privada Norbert Wiener, 2024-06-14) Pérez Espinoza, Kelcy Jael; Huamani Caquiamarca, Yuliana Esther
According to the World Health Organization, almost 100% of the adult population and 60% of children suffer from dental caries. The objective of this study was to determine if there is a relationship between dental caries and caries risk in schoolchildren aged 6 to 9 years at the Mariscal Ramón Castilla Educational Institution in Tingo María during 2023. The hypothetical-deductive method was used, as a phenomenon was to be discovered within a group of people that are part of the study and to understand its distribution within the group. The population consisted of schoolchildren aged 6 to 9 years, with a sample of 248 children attending the educational institution. It was found that 62% of 6-year-old children have a high risk of caries, as do 37.9% of 7-year-olds. 46.2% of 8-year-old children have a medium risk of caries, and 44.8% of 9-year-olds have a low caries risk. In total, 39.6% of the boys and 41.8% of the girls showed a medium caries risk.
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Resistance to abrasion by dental brushing of Bulk-Fill resins of high and low viscosity In Vitro Lima 2022
(Universidad Privada Norbert Wiener, 2023-04-08) Martel Condezo, Miqueas; Huamani Caquiamarca, Yuliana Esther
Objective: The aim of this research was to determine the abrasion resistance due to tooth brushing of high and low viscosity Bulk-Fill resins. Methodology: An in vitro experimental study was conducted, with 45 resin samples distributed into three study groups. Group 1: High-viscosity bulk-fill resin (Filtek™ One Bulk Fill 3M-Espe), Group 2: Low-viscosity bulk-fill resin (Filtek™ Bulk Fill Flowable Restorative 3M-Espe), and Group 3: Conventional composite resin (Filtek™ Z250 XT 3M-Espe). The specimens were weighed before and after tooth brushing to determine mass loss. The brushing process was performed in a machine designed for this purpose, with 91,800 brushing cycles programmed, using medium bristle brushes and toothpaste. Results: Descriptive statistics were analyzed, and the Student's t-test for related data showed significant differences in weight before and after brushing in all resin groups. The Kruskal-Wallis test with Games-Howell post hoc analysis revealed significant differences in weight variation between the high-viscosity Bulk Fill resin and the conventional composite resin. Conclusion: Statistically significant weight loss occurred in all resins evaluated, and the abrasion resistance of the conventional resin was statistically significantly greater than that of the high-viscosity Bulk Fill resin.