Examinando por Autor "Girano Castaños, Jorge Alberto"

Mostrando 1 - 20 de 38

Acceso abierto

(Universidad Privada Norbert Wiener, 2018-06-25) Peña Huamani, Yanet Ysela; Girano Castaños, Jorge Alberto
The objective of this research was to determine the impact of family sociodemographic factors on oral health-related quality of life in children aged three to five years from public educational institutions in the district of Pachacámac, 2017. The study was observational, prospective, cross-sectional, and descriptive. The sample consisted of 182 children aged three to five years, who underwent oral cavity examinations using a dental record sheet to assess dental problems such as caries, dentoalveolar trauma, and malocclusion. The child's caregiver was given the ECOHIS (Early Childhood Oral Health Impact Scale) and a questionnaire to evaluate sociodemographic characteristics of the family members. The results showed a statistically significant relationship (p>0.000) between early childhood caries and quality of life in children aged three to five years. Additionally, when correlating the sociodemographic factors of the caregiver with the ECOHIS, a significant relationship was found between home ownership (0.016) and the child's age (0.047). The frequency of dental caries was 92.3%, dentoalveolar trauma 2.2%, and anterior malocclusions 5.5%, indicating that in early childhood, the impact on the quality of life of the children deteriorates. It was concluded that the impact of oral health conditions and sociodemographic factors on the quality of life in children aged three to five years is statistically significant concerning the child’s age and home ownership.
Acceso abierto

(Universidad Privada Norbert Wiener, 2018-09-19) Contreras Bernal, Maria Fernanda; Girano Castaños, Jorge Alberto
The main objective was to determine the relationship between cognitive level and the presence of dental caries in first permanent molars of children aged 6 to 9 years, treated in the pediatric dentistry department of the Central Military Hospital of Lima, Peru, in 2018. The study was analytical, observational, cross-sectional, and prospective. The sample consisted of 100 parents with their respective children aged 6 to 9 years, selected through probabilistic sampling. A previously validated cognitive level questionnaire and a dental chart were provided. Informed consent was obtained. The hypothesis was tested using Kendall's Tau-b test for a p-value ≤ 0.05 with 95% confidence. The results showed that the cognitive level of the parents regarding dental caries in the first permanent molars of children aged 6 to 9 years was regular [72.0% (72)]; while 14.0% (14) had a good and deficient level. The prevalence of caries in the first permanent molars of children aged 6 to 9 years in the study was 52.0% (52) with a low level, while 24.0% (24) showed moderate and high prevalence, respectively. It is concluded that there is no relationship between the cognitive level of the parents and the prevalence of dental caries in the first permanent molars of children aged 6 to 9 years in the study, and the null hypothesis is accepted.
Acceso abierto
Antibacterial activity of eucalyptus globulus essential oil compared to 0.12% chlorhexidine gluconate in inhibiting porphyromona gingivalis in vitro.
(Universidad Privada Norbert Wiener, 2021-05-05) Feldmuth Gonzales, Henry Jefferson; Girano Castaños, Jorge Alberto
Objective: The objective of this research was to determine the antibacterial activity of eucalyptus essential oil (Eucalyptus globulus) compared to 0.12% chlorhexidine digluconate in inhibiting Porphyromonas gingivalis in vitro. Methodology: A quasi-experimental design was developed, considering the antibacterial agent variable in 4 concentrations of eucalyptus essential oil (10%, 25%, 50%, 100%) and 0.12% chlorhexidine digluconate. Porphyromonas gingivalis bacteria were cultured in media using a sample of 40 plates. Results: This research found that Eucalyptus globulus exhibited greater antibacterial activity at all concentrations than 0.12% chlorhexidine, both at 24 and 48 hours against Porphyromonas gingivalis. The smallest inhibition halo was found for 10% eucalyptus with 18.65 mm, and the largest was for 100% eucalyptus at 48 hours with 29.55 mm. Conclusion: Eucalyptus essential oil (Eucalyptus globulus) has significantly greater antibacterial activity than 0.12% chlorhexidine digluconate in inhibiting Porphyromonas gingivalis in vitro.
Acceso abierto
Body Mass Index and Hemoglobin Related to Oral Health in Secondary Level Adolescents at the Jacques Cousteau Private Educational Institution, Carabayllo - 2022
(Universidad Privada Norbert Wiener, 2023-11-24) Chavez Nieto, Melisa Ivany; Girano Castaños, Jorge Alberto
The objective of this study was to determine the relationship between body mass index (BMI) and hemoglobin levels concerning oral health in adolescents at the secondary level in the Jacques Cousteau Private Educational Institution, Carabayllo – 2022. Methodology: A quantitative approach was used with a non-experimental design and correlational scope, involving a total of 70 secondary school students. Instruments used included the BMI observation sheet, a hemoglobin test, and the CPOD index to assess oral health. Results: The results showed that hemoglobin and oral health had a significance of 0.00, which is less than 0.05, and a Pearson correlation of 0.468, indicating a moderate positive correlation. On the other hand, BMI and its relationship with oral health did not show significance, as it was 0.691, which is greater than 0.05. Conclusion: Therefore, it was concluded that oral health is related to hemoglobin levels, but it does not show an association with BMI.
Acceso abierto
Capacidad compresiva de un cemento resinoso empleado para cementación y construcción de muñones (multicem flow core) en comparación a una resina compuesta (filtek bulk fill). Estudio in vitro. Lima, Perú 2023
(Universidad Privada Norbert Wiener, 2025-11-05) Llihua Arroyo, Yessenia; Girano Castaños, Jorge Alberto
Objetivo: Determinar la capacidad compresiva de un cemento resinoso empleado para cementación y construcción de muñones (Multicem Flow Core) en comparación a una resina compuesta (Filtek Bulk Fill). Metodología: Se emplearon 2 tipos de materiales para reconstrucción de muñones, la resina tipo bulk fill Filtek Bulk Fill y el cemento resinoso tipo core Multicem flow core con los cuales se formaron cilindros con las dimensiones de 10 x 4 milímetros. Los cilindros fueron conformados con ayuda de un molde metálico en donde se agregaron capas incrementales de cuatro milímetros. Estos especímenes se sometieron a fuerzas de compresión mediante la máquina de ensayos universal misma la cual produjo una fuerza de compresión sobre los mimos hasta el punto de lograr su fractura. En el procesado de datos fue usado el programa SPSS v.23 aplicando el estadígrafo T de Student para muestras independientes. Resultados: La resina tipo bulk fill demostró una capacidad compresiva de 128.37 ± 10.83 Mpa. Mientras que el cemento de reconstrucción tipo core Multicem flow core demostró una capacidad compresiva de 158.38 ± 20.79 Mpa. Conclusión: El cemento empleado para la cementación y construcción de muñones presentó una mayor capacidad compresiva en comparación a lo demostrado por la resina Filtek bulk fill, presentando una diferencia de 30.01 Mpa.
Acceso abierto
Chromatic stability of Palfique lx5 and Filtek z350 composite resins against chicha morada, green tea and Cocacola, in vitro comparative study. Lima 2018
(Universidad Privada Norbert Wiener, 2021-10-23) Misajel Aquino, Carlos Darwin; Girano Castaños, Jorge Alberto
The purpose of this study was to evaluate the color stability of two composite resins exposed to different staining agents. A total of 56 composite resin samples were prepared, with 28 samples of Filtek Z350 and 28 of Palfique LX5. Each resin group was divided into subgroups of 8 samples for each staining substance: chicha, Coca-Cola, and tea, and 4 samples for the control group. Color stability was analyzed using Photoshop software, providing mean values on a grayscale. Data were analyzed using ANOVA and Student's t-test for hypothesis testing of differences. Results: The control group had the highest mean value (144.23±1.67) within the Filtek Z350 resin group, showing a significant difference compared to the staining agent groups (p<0.05). In the Palfique LX5 resin group, the control group and Coca-Cola showed the highest values, significantly differing from the tea (p<0.05) and chicha (p<0.05) groups. Significant differences were found between both resin groups within each staining agent and control group (p<0.05). Conclusion: The effect of pigments on color stability was lower in the control group for Filtek Z350 resin. However, for Palfique LX5 resin, the greatest color effects were observed in the control and Coca-Cola groups, followed by tea, with chicha showing the lowest value.
Acceso abierto
Comparison of grades between academic performance and the final exam for students of the X cycle of the School of Dentistry of Norbert Wiener Lima Private University, 2021
(Universidad Privada Norbert Wiener, 2022-08-22) Ramos Blas, Carmen Rosa; Girano Castaños, Jorge Alberto
Introduction: Education in university students is important for achieving success, and this depends on academic performance, which involves evaluating the knowledge acquired during the academic cycle, including all areas or courses from the last year of the program. For this reason, the objective is to determine the comparison of grades between academic performance and the final exam in students from the X cycle of the School of Dentistry at the Universidad Privada Norbert Wiener, Lima 2021. Materials and Methods: This research uses a deductive-hypothetical method with a quantitative approach, as the data obtained during the research were analyzed, and a data collection sheet was used where the weighted averages and final exam grades were recorded.
Acceso abierto
Comparison of the modulus of elasticity and resistance of the thermosetting acrylic resin and the flexible superpolyamide resin. in vitro study - Lima 2019
(Universidad Privada Norbert Wiener, 2020-12-22) Maylle Leon, James Enrique; Girano Castaños, Jorge Alberto
The objective of this research was to compare the modulus of elasticity and resistance of thermocured acrylic resin and flexible superpolyamide resin in an in vitro study conducted in Lima, 2019. Methods: Two types of acrylic resins were used, prepared in wax to obtain rectangular shapes measuring 64 mm in length, 10 mm in width, and 2.5 mm in thickness. These were subsequently converted into thermocured acrylic resin and flexible superpolyamide resin. The sample size was determined using statistical calculations, resulting in 10 resin blocks of each type. These blocks were subjected to compression using a universal testing machine, applying a force increment of 0.001 N with a progression of 0.01 mm/min. Both the modulus of resistance and modulus of elasticity were analyzed through three-point bending tests. Results: The modulus of elasticity for thermocured acrylic resin was 2501.83 ± 139.42 MPa, and its modulus of resistance was 78.36 ± 11.69 MPa. Meanwhile, the modulus of elasticity for flexible superpolyamide resin was 1020.59 ± 92.95 MPa, and its modulus of resistance was 36.04 ± 2.71 MPa. The difference in modulus of elasticity between the two materials was 1481.24 MPa, and the difference in modulus of resistance was 42.32 MPa. Conclusion: The thermocured acrylic resin exhibited significantly higher modulus of elasticity (rigidity) and resistance compared to the flexible superpolyamide resin.
Acceso abierto
Dependence of the degree of severity of musculoskeletal disorders with the ergonomic factor during dental practice in the Ventanilla district - 2021
(Universidad Privada Norbert Wiener, 2022-09-20) Esquivel Cuneo, Daniel Alejandro; Girano Castaños, Jorge Alberto
Due to daily work, difficulties arise in the musculoskeletal system that affect health within the workplace, especially in the dental field, as the dentist must use ergonomic factors to perform their work correctly. The aim of this study was to establish the dependence between the severity of musculoskeletal disorders and ergonomic factors in dental practice in the Ventanilla district, 2021. In this quantitative, descriptive, and cross-sectional study, a simple random probabilistic sample of 120 licensed and registered dentists was selected, using a questionnaire with virtual questions through an online form. The results indicate that 7 dentists experience severe discomfort (>4 hours) while sitting in the ergonomic chair. It was determined that, among the sociodemographic characteristics of age, weight, sex, and height, 42.5% (51) were female, and 57.5% (69) were male, with ages ranging from 24 to 51 years and older. It was concluded that multiple ergonomic factors contribute to these injuries in the professional field, and a correlation between the injuries was found.
Acceso abierto
Effect of essential oil and music therapy in reducing anxiety, in patients undergoing dental fillings in a dental office, Callao - 2022
(Universidad Privada Norbert Wiener, 2022-08-17) Velazco Ramon, Edwin Pedro; Girano Castaños, Jorge Alberto
Objective: To evaluate the effect of essential oil and music therapy on the reduction of anxiety in patients undergoing dental filling treatment in a dental office, Callao – 2022. Materials and Methods: This was an observational, analytical, and longitudinal study. A total of 135 patients were evaluated, divided into three groups: essential oil, music therapy, and control, with 45 patients in each group. Heart rate and anxiety levels were measured before and after the treatment. Results: In the control group, no significant difference in anxiety levels was found. In the essential oil group, before treatment, 40% had high anxiety, 48.89% had moderate anxiety, and 11.11% had low anxiety. After treatment, high anxiety decreased to 4.44%, moderate anxiety to 15.56%, low anxiety to 46.67%, and 33.33% had no anxiety, showing a significant difference. In the music therapy group, before treatment, 44.44% had high anxiety, 44.4% had moderate anxiety, and 11.11% had low anxiety. After treatment, high anxiety decreased to 6.67%, moderate anxiety to 6.67%, low anxiety to 51.11%, and 35.56% had no anxiety, with a significant difference. The control group showed no significant difference in heart rate. In contrast, the essential oil group showed a heart rate of 88.22 bpm before treatment and 81.33 bpm after treatment, with a significant difference. The music therapy group had a heart rate of 88.24 bpm before treatment and 80.91 bpm after treatment, also with a significant difference. Conclusion: Essential oil and music therapy have an effect on the reduction of anxiety in patients undergoing dental filling treatment in a dental office.
Acceso abierto
Effectiveness in the adhesion of three types of composite resins as an alternative for the repair of porcelain in fixed prostheses: a comparative in vitro study, Lima 2019
(Universidad Privada Norbert Wiener, 2019-11-06) Guzmán Lavado, Ivan Erasmo; Girano Castaños, Jorge Alberto
Oral rehabilitation in fixed prosthesis treatments with metal-ceramic materials is widely used today, but these materials can fracture due to multiple factors. However, this situation does not always lead to replacement. Repairing porcelain with composite resin is an alternative with advantages such as easy handling and low cost. The main objective of this thesis was to determine the effectiveness of adhesion of three types of composite resins used as alternatives for repairing porcelain in fixed prostheses in Lima, 2019. This study was experimental, analytical, prospective, and cross-sectional. Feldspathic ceramic IPS CLASSIC V was used as the base material to evaluate the adhesion of three types of composite resins: Master Fill resin, Tetric N-Ceram resin, and Filtek Z350 XT resin. The microtensile bond strength (μTBS) was evaluated using a digital universal testing machine CMT-5L, LG, at a speed of 0.5 mm/min. The results showed that Filtek Z350 XT resin had the highest average adhesion level with 11.32% Mpa, Tetric N-Ceram resin achieved a regular level of 10.17%, and Master Fill resin showed the lowest level with 8.32% Mpa.
Acceso abierto
Evaluación de conocimientos, actitudes y prácticas en control de infecciones de cirujanos dentistas en su práctica clínica privada durante tiempos de Covid 19. Lima, 2020
(Universidad Privada Norbert Wiener, 2021-10-07) González Gonzáles, César Arturo; Girano Castaños, Jorge Alberto
This study is descriptive, cross-sectional, and prospective. The sample consisted of 208 licensed, registered, and authorized dentists from the Lima Region Dental Association. Each professional filled out a virtual survey, previously validated, to assess the level of knowledge, attitudes, and practices regarding infection control. Results: Upon evaluating the level of knowledge, it was found that 58.2% had medium knowledge, followed by 35.6% with low knowledge. Regarding attitudes toward infection control, 100% of the respondents reported having a high attitude level. In terms of infection control practices, 76% had a medium practice level, followed by 21.6% with a high practice level. No statistically significant association was found between the level of knowledge and practices (Pearson's Chi-square test; p>0.05), nor between the level of knowledge and attitudes, as the latter remained constant. Conclusion: There is no relationship between the level of knowledge and practices regarding infection control among dentists in their private clinical practice during the COVID-19 pandemic.
Acceso abierto
Evaluation of scientific publications in Peruvian dental journals 2021
(Universidad Privada Norbert Wiener, 2022-11-29) Valle Goñas, Cindy Amanda; Girano Castaños, Jorge Alberto
The purpose of this research was to evaluate the frequency of scientific publications in Peruvian dental journals in 2021. The study had a quantitative, cross-sectional, retrospective approach. The sample consisted of 1,448 review articles obtained through non-probabilistic convenience sampling, published over a period of 20 years (2000–2021), collected through the library systems of UNMSM, UPCH, USMP, and journal websites. It was found that the frequency of scientific publications in Peruvian dental journals has shown a positive trend, increasing from 18 publications in 2000 to 102 publications in 2021, with an average of 66 publications per year. The majority of publications were from the Estomatológica Herediana journal (37.4%), followed by Kiru (27.6%), and Odontología Sanmarquina (35%). The area with the most published dental research was Oral Rehabilitation, with 261 publications. Furthermore, more original articles (832) were published than other types. The study concluded that the frequency of journal publications has shown a positive trend, with an increase in recent years.
Acceso abierto
Evaluation of the degree of inclination of the articular eminence and skeletal patterns according to the Steiner ANB angle in Cone Beam tomographies in a radiological center in Lima in the year 2021
(Universidad Privada Norbert Wiener, 2022-12-10) Gutiérrez Joo, Anggie Fiorella; Girano Castaños, Jorge Alberto
This study evaluated the comparison of the inclination of the articular eminence and skeletal patterns according to the ANB angle of Steiner in Cone Beam CT scans at a radiological center in Lima in 2021. This is an observational, cross-sectional, retrospective, and analytical study. It employed 112 CT scans from the IDM (Maxillofacial Diagnostic Institute) radiology center database. The sample consisted of individuals aged 20 to 40 years with complete dentition, excluding scans from patients with jaw trauma, fractures, noticeable craniofacial malformations, or facial asymmetries. Data collected included sex, age, and degrees of the inclination of the right and left articular eminence (IEA), as well as skeletal patterns according to Steiner (Class I, II, III). Excel and SPSS were used for statistical analysis. Results showed that Class II (50.28°-49.60°) presented the highest degree of IEA on both the right and left, followed by Class I (44.43°-45.06°), and Class III (34.32°-32.52°) presented the lowest degree. The most frequent skeletal pattern was Class II (40.2%). The average values were Class I (44.77°), Class II (49.94°), Class III (33.52°), and the total average was 42.74°. The average for females was 45.62°, slightly higher than for males at 41.83°. The average for the age group 20 to 30 years was 43.46°, and for 31 to 40 years, it was 45.96°, slightly higher than the younger group. For the right side, the average IEA was 44.21°, similar to the left side at 43.64°. When comparing the location in each skeletal class, no significant difference was found: Class I (p=0.694), Class II (p=0.751), Class III (p=0.241), all with p>0.05. However, a significant difference was found between the IEA degree and each skeletal class, with p=0.000 (p<0.05).
Acceso abierto
Evaluation of the Gohai and Ohip-14 as instruments to measure the quality of life in elderly patients with diabetes mellitus who attend the Endosalud specialized clinical center, Lima-2021.
(Universidad Privada Norbert Wiener, 2021-11-02) Roque Salazar, Brizeth Yasmin; Girano Castaños, Jorge Alberto
Objective: To evaluate the GOHAI and OHIP-14 as instruments to measure the quality of life in elderly patients with diabetes mellitus attending the specialized clinical center Endosalud, Lima, 2021. Methodology: A basic deductive method, with a quantitative approach of observational research, cross-sectional design. The sample consisted of 162 elderly patients. Results: When evaluating the OHIP-14 and GOHAI questionnaires, a good quality of life was observed with the GOHAI questionnaire, with 87.6% (142 respondents), and OHIP-14 with 6.2% (10 respondents). However, regarding regular quality of life, the OHIP-14 questionnaire showed a higher value of 32.1% (52 respondents), while the GOHAI questionnaire showed 10.5% (17 respondents). On the other hand, for poor quality of life, the OHIP-14 questionnaire showed a higher value of 64.7% (100 respondents), compared to the GOHAI questionnaire, which showed 1.9% (2 respondents). Conclusion: The use of the GOHAI instrument is recommended for future studies to maintain a constant evaluation, control quality of life, and oral health condition in elderly individuals, with a focus on diabetes mellitus and a multidisciplinary approach.
Acceso abierto
Fracture resistance of microhybrid resins compared to nanohybrid resins: in vitro study, Lima, Peru 2019
(Universidad Privada Norbert Wiener, 2019-11-09) Mamani Jáuregui, Marisol Fiorela; Girano Castaños, Jorge Alberto
Introduction: Nowadays, composite resin restorations are a daily part of dental care, requiring not only excellent aesthetic results but also high fracture resistance under occlusal loads. Objective: To compare the fracture resistance of microhybrid resins and nanohybrid resins. Methodology: Two types of composite resins were used, molded into cylindrical shapes with dimensions of 10 mm in height and 4 mm in diameter. These cylinders were constructed in 2 mm increments, with each increment photo-cured for 20 seconds at 800 nw, and the final layer photo-cured for 40 seconds at 800 nw. The sample size was determined through statistical calculations, comprising 14 resin cylinders of each type. The cylinders were subjected to compression using a universal testing machine, which applied a compressive force at a rate of 0.75 mm/min ± 0.25 mm/min until the resin cylinders fractured. Data were processed using SPSS and analyzed with the Mann-Whitney U test. Results: The fracture resistance of the microhybrid resin was 262.69 ± 42.656 MPa, while that of the nanohybrid resin was 219.45 ± 27.887 MPa. Comparing the two materials revealed that the microhybrid resin had significantly higher fracture resistance than the nanohybrid resin, with a difference of 43.24 MPa (p<0.05). Conclusion: Microhybrid resins exhibit greater fracture resistance compared to nanohybrid resins.
Acceso abierto
Frequency of dental sensitivity due to gingival recession in patients aged 18 to 60 years treated at the Adult Clinic of the Private University Norbert Wiener in the period September-November 2017
(Universidad Privada Norbert Wiener, 2019-02-15) Quispe De la Cruz, Jhonny David; Girano Castaños, Jorge Alberto
The purpose of this research was to determine the frequency of dentin hypersensitivity due to gingival recession in patients aged 18-60 years, treated at the Adult Dental Clinic of the Universidad Norbert Wiener from September to November 2017. An observational and prospective study was conducted. A total of 151 patients aged 18-60 years with the presence of gingival recession were evaluated. The chi-square test was applied in the analysis. The results showed that, out of 151 patients, 115 (76.20%) presented dentin hypersensitivity due to gingival recession. By sex, 42.6% of the patients with dentin hypersensitivity due to gingival recession were male, and 57.4% were female (p>0.05). Regarding age group, dentin hypersensitivity due to gingival recession was most frequent in the 41 to 55-year-old group (37.4%), followed by 25.2% in the 26 to 40-year-old group (p≤0.05). According to pain intensity and the group of dental pieces examined with dentin hypersensitivity due to gingival recession, mild pain was found to be most frequent in the incisors (49.6%), followed by 37.4% in canines, premolars, and molars. Regarding periodontal recession class and the group of dental pieces examined, class I was most frequent in the incisors (36.4%), followed by 27.8% in canines, premolars, and molars. It was concluded that dentin hypersensitivity due to gingival recession was present in 76.20% of patients aged 18 to 60 years.
Acceso abierto
Frequency of the Second Mesiovestibular Duct of the First Upper Molar by Using Conical Beam Computed Tomography in Patients Attended at the Center of Oral and Maxillofacial Radiology Stomatological Images E.I.R.L., Lima 2019-2020
(Universidad Privada Norbert Wiener, 2023-05-11) Vilca Pinares, Roxana; Girano Castaños, Jorge Alberto
The frequency of the MB2 canal is high worldwide. In light of this, the objective of this study was to determine the frequency of the canal in the upper first molars using computed tomography. This research was deductive, quantitative, basic type with an observational, descriptive, and cross-sectional design. A data collection form was used, and the sample consisted of 144 tomographies, analyzing 254 upper first molars, which were selected according to inclusion criteria. The data were processed in SPSS version 25. Results showed that of the 254 upper first molars, 104 (41%) had the MB2 canal and 150 pieces (59%) did not. Regarding the side, 39.5% was on the right and 42.4% on the left. As for gender, 34.8% in females and 51.6% in males had the MB2 canal. Regarding age, 40.7% for those under 20 years, 55.9% for those between 20-40 years, and 64.9% for those over 40 years. Conclusion: The MB2 canal can be present on both the right and left sides, with a higher presence in males and an increased presence with age.
Acceso abierto
In vitro evaluation of the retention of porcelain using different cementation materials for dental crowns, Lima 2019
(Universidad Privada Norbert Wiener, 2019-11-04) Tarazona Flores, Miguilina; Girano Castaños, Jorge Alberto
Aesthetics is an important part of social relationships today, and dentists must have good judgment based on accurate diagnosis to determine the appropriate treatment for anterior teeth. In dental restorations with veneers, there is a wide variety of ceramic materials, among which feldspathic ceramics like IPS e. Max (IvoclarVivadent®), reinforced with lithium disilicate, stand out for their high fracture resistance. To achieve proper retention of the veneer to the tooth, the cementing agent plays a crucial role in the success of the treatment. The main objective of this research was to evaluate the adhesion of porcelain using Tetric N Flow fluid resin and RelyX™ U200 dual cement, 3M ESPE, as cementation materials for dental veneers. The study was experimental, analytical, prospective, and cross-sectional. A digital universal testing machine, CMT-5L (Korean), was used as the data collection instrument to assess microtensile bond strength, where the highest adhesion level was achieved with Tetric N-Flow fluid resin at 7.9% Mpa, and the lowest level was with RelyX™ U200 cement at 5.9% Mpa. We conclude that retention of porcelain was successfully achieved using different cementation materials for dental veneers.
Acceso abierto
In vitro study of the inhibitory effect of the ethanolic extract of passiflora edulis on the streptococcus mutans strain carried out in Lima-Peru 2022
(Universidad Privada Norbert Wiener, 2022-07-16) Ugaz Bustamante, Avril Cherish; Girano Castaños, Jorge Alberto
In recent decades, there has been growing interest in natural therapies due to their various advantages, such as low cost and effectiveness for addressing a variety of health issues, including in the field of dentistry. The inhibitory effect of the ethanolic extract of Passiflora edulis on the Streptococcus mutans strain was evaluated. Antimicrobial activity was assessed using the disk diffusion method by measuring the growth diameter of the inhibition zone on Mueller-Hinton Agar plates with 5% blood; bacterial growth was halted compared to positive control groups. Finally, all relevant data collected were recorded in a laboratory sheet. Passiflora edulis showed inhibitory effects at different concentrations against the Streptococcus mutans strain. As concentrations dropped below 50%, inhibition halos decreased to 6mm, which was observed up to 48 hours of exposure. Inhibition halos of 24mm were found after 48 hours of exposure to 100% ethanolic extract of P. edulis on S. mutans. Passiflora edulis exhibited antimicrobial activity against S. mutans strains, suggesting the need for further investigation into this plant as an alternative to various anticariogenic products or irrigating agents currently available in the Peruvian market.