Now showing items 21-40 of 130

    • Comparación de la sensibilidad durante y después del blanqueamiento domiciliario con peróxido de carbamida al 10% y 16 % en pacientes de una clínica docente odontológica

      Cafferata Montoya, Paola Antonella; Pella Ato, Arabella (Universidad Peruana de Ciencias Aplicadas (UPC), 2017-01-30)
      Objective: To compare the dentin sensitivity during and after home whitening with 10% and 16% carbamide peroxide in patients of the Teaching Dental Clinic of the Peruvian University of Applied Sciences, UPC (2015-2). Materials and Methods: : 44 patients were received, under standardized conditions, home whitening with 10% and 16% carbamide peroxide and were randomly divided in 2 groups according to the concentration of carbamide peroxide. Tooth sensitivity was measured according to the Visual Analogue Scale (VAS) at 1, 7, 14 and 21 days. Tooth sensitivity generated by both concentrations of carbamide peroxide was compared with the Kruskal Wallis test. Results: The group using 16% carbamide peroxide had higher average score sensitivity (EVA) on day 1 (1.59 + 1.95), day 7 (1.88 + 1.48), day 14 (1.26 + 1.16) and day 21 (0.05 + 0.13), while the group with 10% carbamide peroxide had the following scores: Day 1 (0.8 + 0.83), day 7 (1.24 + 0.97), day 14 (0.55 + 0.62) and day 21 (0.01 + 0.64). Conclusions: Statistically significant differences observed when comparing the 10% and 16% carbamide peroxide, with the 16% carbamide peroxide generating more sensitivity in all patients.
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    • Evaluación de la ansiedad dental aplicando 3 escalas en niños que asisten por primera vez a un centro universitario de salud

      Ramírez Torres, María Cecilia; Gutierrez Almenara, Mirella Alexandra; Walde Díaz, Xiomi Fiorella (Universidad Peruana de Ciencias Aplicadas (UPC), 2017-12-12)
      The first dental visit of pediatric patients could generate reactions and positive or negative behavior in future appointments, this product of the anxiety that the child may present to new events in his life. For this reason, it’s important that the dentist can count on instruments that allow assessing the level of anxiety and then deciding which behavior management technique is appropriate for the job. Objective: To evaluate the levels of dental anxiety using 3 scales in children from 5 to 10 years old who attend a University Health Center for the first time. Materials and methods: The sample consisted of 203 children between the ages of 5 and 10 who visited the University Health Center of the UPC for the first time during the period July-December 2016. Results: In the evaluation with the RMS-Pictorial scale. The age range 9-10 years, the male gender obtained the highest average (±1.97). In the Venham scale, in the age range 5-6 years, the female gender obtained the highest average (±0.063) a difference than in the male sex (±0.00). In the FIS scale, in the 9-10 age range, the female gender obtained the highest average (±2), as did the male gender, in the age range 7-8 years, obtained (±2). The RMS-Pictorial scale was the highest acceptance rate (54.67%), followed by the FIS scale (24.63%) and, finally, the Venham scale (20.68%). Conclusion: It is concluded that the RMS-Pictorial, Venham and FIS scales allowed assessing dental anxiety in children from 5 to 10 years before the first dental visit in the University Health Center UPC.
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    • Calidad de vida en relación a la salud oral en preescolares de una institución educativa pública de Lima

      Ñaupari Pineda, José Raul; Aguilar Huaman, Daniela Messiel (Universidad Peruana de Ciencias Aplicadas (UPC), 2018-01-05)
      Objective: The purpose of this study was to evaluate the quality of life in relation to oral health and related factors in pre - school children of a public educational institution in Lima. Methods. This study followed a descriptive-analytical cross-sectional design, using a sample of 199 children aged 3 to 5 years attending a Public Initial Educational Institution in the district of Chorrillos, Lima. Caregivers completed the ECOHIS (Early Childhood Oral Health Impact Scale) questionnaire and answered questions related to sociodemographic factors (gender, preschool age, gender, age, and level of education of the person in charge of the child). Spearman correlation, Student's t, Gaussian GLM regression and identity with coefficient and 95% CI. Results. The observed characteristics of the children, found that approximately half were women (51.8%) and the mean age was 4 years (d.e: 0.8). The majority of those responsible for child care were women (66.3%). The mean score for ECOHIS was 30.7. In the analysis of multiple variables it was found that parents with higher education reported a better quality of life than parents with secondary or lower education (Coef .: -16.5, 95% CI: 22.2, -10.8). Parents with higher education had an average of 16.4 points less on ECOHIS compared to parents with a high school education (Coef.:16.4, 95% CI: -22.1, -10.6). Conclusion. The low educational level of the caregiver is associated with a lower quality of life related to oral health. It is necessary to establish strategies of promotion and prevention with special emphasis on improving the quality of life in these people with less education.
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    • Prevalencia de erosión dental en estudiantes de 12 a 16 años utilizando Basic Erosive Wear Examination (Bewe) en una institución educativa del distrito de Chorrillos

      Casas Apayco, Leslie Caroll; Hayakawa Lastarria, Luis Angel (Universidad Peruana de Ciencias Aplicadas (UPC), 2017-12-01)
      Objectives: The aim of this study was to determine the prevalence and distribution of dental erosion in 12 to 16 year old students from a public school called “María Auxiliadora” in Chorrillos, Lima-Perú. Material and methods: A number of 382 students were clinically examinated for dental erosion using the Basic Erosive Wear Examination (BEWE). After the clinical examination, scores were obtained by sextants; they were then summed to result in a cumulative score. The data were analyzed by descriptive statistics and to relate the erosion with the gender and age variables, the Chi2 and Anova test (oneway) (p<0,05). Results: The prevalence of dental erosion was 12.04% and as to its distribution, the most representative age was the group of 16 years (28.26%), the female gender was the most frequent (54.3%), the predominant location was in the lower maxilary (54.35%) posterior teeth (56.52%) oclusal surfaces (65%). Conclusions: Of the total number of students evaluated, 12.04% had dental erosion. It was also found a greater distribution of dental erosion in the female gender and in the students of 16 years of age, but there was no statistical significance.
    • Comparación in vitro de la resistencia adhesiva en dentina utilizando tres sistemas adhesivos universales

      Casas Apayco, Leslie Caroll; Kinoshita Rivas, Haru Antony; Acurio Benavente, Claudia Mariana (Universidad Peruana de Ciencias Aplicadas (UPC), 2017-12-13)
      Objectives: Compare in vitro bond strength in dentin of three universal adhesive system: Scotchbond UniversalTM (3M ESPE), Peak Univerisal Bond (Ultradent), Tetric N-Bond (Ivoclar Vivadent) through the shear bond. Materials and methods: 75 crowns teeth were selected and cut to this study. Exposed dentin with granulation 220 sandpaper. Subsequently, the crowns were distributed randomly (n=25) and included in databases acrylic 15 x 10mm. The distribution of the groups was G1: System universal Scotchbond™ adhesive Universal (3M ESPE - USA); G2: System universal adhesive Peak Bond Universal (Ultradent); G3: Universal adhesive system Tetric N-Bond (Ivoclar Vivadent). Then, was to make the adhesive phase according to each group and the restorative procedures with composite resin Filtek™ Z350XT-A2 (3M ESPE-USA), according to the manufacturer's instructions. It was made of tygon composite resin (0.79mm x 1.5 mm). The samples were stored in an incubator at 37°C (+/-5 °C) for 24 hours. Subsequently, each group shear test was conducted (0.5 mm / min, 500N load), obtaining values in kg/m2 to convert MPa. Also assessed the type of failure, using a digital microscope of increasing x 200. Oneway ANOVA test was used for statistical analysis between the adhesive strength and universal adhesive systems. Results: No Found statistically significant differences between the systems evaluated universal adhesives Scotchbond™ Universal (14.91±4.76), Peak Bond Universal (16.90±4.11) and Tetric N-Bond (Ivoclar Vivadent) (17.34±4.04) / p-value (p = 0.114). Conclusions: No differences between the values of adhesive strength of three universal adhesive systems used in this study.
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    • Evaluación de la ansiedad dental en pacientes adultos en el proceso de la colocación de la anestesia dental en la clínica universitaria UPC en el periodo 2016-II

      Ghersi Cordano, Vanessa; Balladares Espinosa, Alvaro Emilio (Universidad Peruana de Ciencias Aplicadas (UPC), 2018-01-20)
      Introduction. Dental anesthesia has been recognized as an important cause of anxiety. The aim of this study is to evaluate anxiety before, during and after the placement of the local anesthesia in adult patients in a university health center in Lima, 2016. Methods. Longitudinal study evaluating adult patients in the course of 5 months. There was a single examiner and he evaluated the anxiety using the Interval Scale of Anxiety Response (ISAR) instrument before the anesthesia was placed, just after the placement of the anesthesia and 15 minutes after the infiltration was completed. The differences between the means were evaluated with the T-Student test or Analysis of Variance one way ANOVA to obtain the results about the anxiety in the 3 different moments and the post –hoc Bonferroni test. Results. 170 patients were evaluated, 55% were male. It was found that there were no significant differences by gender. In all three moments, the anxiety was different. (Before = 3.05, for = 3.65, then = 1.86, p=<0.001). As for ages, the ranges between 18-29 years and 30-59 years had a similar behavior (the highest score being during and the lowest after the injection) but patients aged 60 and over showed that the highest level of anxiety was after 15 minutes of finishing the procedure. Conclusion. The levels of anxiety in the 3 different moments are different from each other. According to gender, no significant differences were found. According to age, the participants 60 years or older behaves differently (where anxiety increases as the procedure progresses).
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    • Evaluación in vitro del efecto antimicrobiano y citotóxico del extracto metanólico dracontium loretense (jergón sacha) sobre cepas de candida albicans (ATCC®10231™), Streptococcus mutans (ATCC®25175™) y Streptococcus sanguinis (ATCC®10556™)

      Del Valle Mendoza, Juana Mercedes; Manrique Holguín, Paola Cecibel (Universidad Peruana de Ciencias Aplicadas (UPC), 2017-12-14)
      Objective: The aim to this study was to evaluate the antimicrobial and cytotoxic effect of the methanol extract of Dracontium loretense (Jergon Sacha) against Candida albicans (ATCC®10231), Streptococcus mutans (ATCC®25175) and Streptococcus sanguinis (ATCC®25175). Materials and Methods: The methanolic extract of Dracontium loretense was prepared at different concentrations. The antimicrobial activity of Dracontium loretense was evaluated on strains of Candida albicans, Streptococcus mutans and Streptococcus sanguinis by the agar diffusion method. The cytotoxicity of the extract (CC50) was determined using the MDCK cell line. Results: The results showed that the methanolic extract of Dracontium loretense had inhibitory effect on Streptococcus mutans and Streptococcus sanguinis with inhibition halos of 14.10 ± 0.65mm and 15.58 ± 0.43mm, respectively. However, no inhibitory effect was observed on Candida albicans. The minimum inhibitory concentration (MIC) of the methanolic extract of Dracontium loretense on strains of Streptococcus mutans was 500 μg/ml. While the MIC on Streptococcus sanguinis was 62.5μg / ml. The cytotoxicity of the methanolic extract of Dracontium loretense on the MDCK cell line was evaluated in a range of 0 to 900 μg / ml, showing that it is not cytotoxic in high concentrations. Conclusion: The experimental findings showed that Dracontium loretense (Jergon Sacha) presented an antibacterial effect on the strains of Streptococcus mutans and Streptococcus sanguinis. However, it did not present an antifungal effect on strains of Candida albicans. The extract of this plant is not cytotoxic even in high concentrations.
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    • Evaluación in vitro de la actividad antibacteriana de los aceites y extractos metanólicos de sésamo, coco y girasol sobre cepas de Streptococcus Mutans (ATCC 25175)

      Valle Mendoza, Juana Mercedes; Alberca Perea, Stephanie; Colca Solano, Sthefany Margarita (Universidad Peruana de Ciencias Aplicadas (UPC), 2018-01-09)
      Objective: In vitro evaluation of the antibacterial effect of the commercial oils and methanolic extracts of sesame, coconut and sunflower on Streptococcus mutans strains (ATCC 25175). Materials and Methods: Commercial oils of sesame, coconut and sunflower were used, and methanolic extracts of sesame, sunflower seeds and coconut pulp were prepared. Each extract and oil were tested for 5 times and 0.12% chlorhexidine was used as a positive control. The method was performed by agar diffusion, in which 4 wells were made, one for each solution, and were cultivated for 48 hours under fully anaerobic conditions at 37 ° C. The cytotoxicity test was also performed. Results: The commercial oils of sesame, coconut and sunflower had no antibacterial effect. The methanolic extracts of sesame and sunflower had no antibacterial effect as well. Nevertheless, the methanolic extract of coconut had an antibacterial activity of 12,8 mm aprox. Furthermore, the cytotoxic tests showed that the CC50 of the sesame methanolic extract was 100 µg/mL, of the coconut extract was 200 µg/mL and of the sunflower extract was 450 µg/mL. Conclusion: The coconut methanolic extract is the only one that has an antibacterial effect; however, after the cytotoxic tests where done, the results indicated that it is cytotoxic for the cells from a concentration of 200 µg/mL.
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    • Evaluación in vitro de la actividad antibacteriana y citotóxica de los polialcoholes (Xilitol E-967, Sorbitol E-420, Manitol E-421) sobre Streptococcus Mutans (ATCC® 35668™)

      Del Valle Mendoza, Juana; Ayala, Renzo; Zapata Quispe, Maria Gracia (Universidad Peruana de Ciencias Aplicadas (UPC), 2017-12-14)
      Objective: The aim of this study is to compare in vitro the antibacterial activity and the cytotoxic effect of polyalcohols (Xylitol E-967, Sorbitol E-420, Mannitol E-421) on the bacterial strain Streptococcus mutans (ATCC® 35668 ™). Materials and Methods: The present study was experimental in vitro. To determinate the antibacterial effect was used Cerebral Heart Infusion Agar (BHI) plates with differents concentrations of polyalcohols (Xylitol E-967, Sorbitol E-420 and Mannitol E-421) inoculated with strains of Streptococcus mutans (ATCC® 35668 ™). The minimum inhibitory concentration (MIC) and the antibacterial effect was evaluated by the microdilution method. The cytotoxic effect (CC50) of the polyalcohols was evaluated against the MDCK cell line by the MTT colorimetric test. Results: The antibacterial effect was observed after 72 hours, the Xylitol polyalcohol had antibacterial effect on strains of Streptococcus mutans up to the concentration 1x10-5 with 0 colony forming units (CFU), while Sorbitol and Mannitol had countless CFU in all concentrations. The MIC of the Xylitol Polyalcohol was 1x10-5. In the evaluation of the cell viability of Xylitol, Sorbitol and Mannitol, the result was greater than 85% in all concentrations. Conclusion: Xylitol polyalcohol showed a higher antibacterial effect than Sorbitol and Manitol polyalcohols. Regarding the cytotoxicity of the polygons, none presented toxicity at the cellular level.
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    • Correlación entre el patrón facial y esquelético de pacientes con deformidad dentofacial clase II

      Ghersi Miranda, Hugo Dante; Huanca Gonzales, Jorge Caleb (Universidad Peruana de Ciencias Aplicadas (UPC), 2018-01-03)
      One of the important means to make an adequate diagnosis and treatment plan in orthodontics and maxillofacial surgery is the evaluation of the facial and skeletal pattern. Objective: The main purpose of this paper is to correlate both patterns using the Steiner analysis for hard tissue and Burstone and Legan for soft tissue on cephalometric radiographs of patients with Class II dentofacial deformity who attended the Institute of Maxillofacial Diagnostics in the year 2015. Materials and Methods: The sample consisted of 92 digital cephalometric radiographs (46 male and 46 female) between 18 and 45 years of age, analyzed with Planmeca Romexis® 4.0 software. Results: . The results indicated that in the male sex with a Class II skeletal pattern was 67.39%, while in the female sex with the same skeletal pattern was 39.13%. Conclusions: Based on the aforementioned data, it can be determined that sex influences the diagnosis and treatment plan.
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    • In vitro evaluation of bacterial adhesion and bacterial viability of Streptococcus mutans, Streptococcus sanguinis, Porphyromonas gingivalis and the abutment surface of the dental implants of titanium and zirconium

      Del Valle Mendoza, Juana Mercedes; Meza, Ana Stefany (Universidad Peruana de Ciencias Aplicadas (UPC), 2017-11-22)
      Objective: To evaluate in vitro the adherence and bacterial viability of Streptococcus mutans, Streptococcus sanguinis and Porphyromonas gingivalis on the abutment surface of titanium and zirconium implants. Methods: Six samples were prepared, divided into two groups, G1: 3 abutment of titanium and G2: 3 abutment of zirconium with their fixation screws, each group was embedded in tubes with bacterial cultures, subsequently the samples were incubated at 37 ° C in conditions of anaerobiosis. Bacterial adherence was evaluated in CFU and bacterial viability with the MTT colorimetric test. Results: It was found that in the titanium abutment there is greater adherence of S. mutans (190.90 CFU / ml), while P. gingivalis shows greater bacterial viability (73.22%). For the zirconia abutment, greater adhesion was observed, for the case of S. mutans (331.82 CFU / ml) and greater viability in the S. sanguinis strain (38.42%). In the fixing screws, titanium showed the highest adherence for S. sanguinis (132.5 CFU / ml) and greater viability for S. mutants (78.04%). While for the zirconium screw it is observed that S. mutans has greater adherence and viability with (145.5 CFU / ml) and (57.38%) respectively. Conclusions: There is greater bacterial adherence in zirconium abutment, however, bacterial viability is lower. Meanwhile, in the case of titanium abutment it was found that there is less adherence but greater bacterial viability. It is suggested to expand with students who have a larger sample number.
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    • Evaluación del PH y solubilidad de un material experimental de restauración temporal a base de óxido de zinc, cemento portland y arcilla dolomita para su uso en endodoncia

      Valverde Huaranga, Juan Carlos; Lara Baldeon, Gerson (Universidad Peruana de Ciencias Aplicadas (UPC), 2018-01-15)
      Objective: The purpose of the present study was the in vitro pH and solubility of an experimental cement based on zinc oxide, Portland cement and dolomite clay with other cements commonly used as temporary restoration in endodontics Ketac™ Molar Easymix, Zinc Oxide Eugenol, Clip F and Coltosol® F. Materials and methods: One hundred ten polyethylene tubes were filled with the cements corresponding to the 5 groups (n = 22). Fifty-five of these samples were immersed in 10 ml of distilled water and incubated at 37 ° C. The pH was determined with a digital pH meter after one day and the 3, 7, 14, 21 and 28 days of immersion were determined. In addition, the initial weight of 55 samples were recorded, immersed in artificial saliva at pH 7 and incubated at 37 ° C for 7 days. After this period the samples were dried, stored in a desiccator containing anhydrous calcium sulfate for 60 min and weighed. Data were analyzed using ANOVA and Student’s t-test (P <0.05). Results: Experimental cement showed alkaline values in all periods evaluated and significantly different from other materials (p <0.005). As for the solubility study, only the significant difference in Coltosol and experimental cement was found, there being a lower solubility after 7 days in the Coltosol® F followed by the experimental cement, Ketac™ Molar Easymix, Zinc Oxide Eugenol and Clip F. Conclusion: Experimental cement based on zinc oxide, Portland cement and clay dolomite showed alkalinity and low solubility, properties sought in a temporary restoration material in endodontics.
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    • Comparación de la resistencia a la compresión de un cemento experimental con el óxido de zinc y Eugenol, Coltosol® F, Ketac™ Molar y Clip F

      Gonzales Soto, Néstor; Reyes Galindo, Carmen Maritza; Moscoso Huamaní, Melissa Alexandra (Universidad Peruana de Ciencias Aplicadas (UPC), 2018-12-31)
      Objective: Compare the compressive strength of the experimental cement with Zinc Oxide and Eugenol, Coltosol ® F, Ketac™ Molar Easymix 3M (ESPE) and Clip F (VOCO). Materials and Methods: This study was of experimental type in vitro. The analysis unit consisted of a cylinder-shaped specimen with the different temporary restoration materials. The sample had 10 groups of 11 specimens each, distributed according to the type of material and the measurement times, with uniform measurements of 6mm in diameter and 4mm in height. Then, these samples were immersed in distilled water until their respective measurement. After that, the compressive strength was evaluated on the Instron® machine at a speed of 1mm/ 1min. Finally, the data was analyzed using the Kruskall Wallis test. Results: In this study, the experimental cement obtained higher values of compressive strength (10.78+0.77 MPa in the 7th day) and (2.94 ± 1.03 MPa in the 14th day) in comparison of Coltosol® F (7.87+0.61MPa) and (2.72 ± 0.32MPa); and Zinc Oxide and Eugenol (6.22+0.78 MPa) and (1.64 ± 0.50MPa). That means that statistically significant differences between all temporary restoration materials were found. Conclusions: Between the days 7 and 14, the compressive strength of the experimental cement was higher than the Zinc Oxide and Eugenol and Coltosol® F materials. However, the highest values of resistance were for the Ketac™ Molar Easymix 3M (ESPE) and Clip F (VOCO) groups.
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    • Comparación in vitro de la fuerza de adhesión de postes de fibra de vidrio con superficie tratada previo a su cementación con un agente resinoso autograbante

      Revoredo De Rojas, Arturo; Sánchez Ríos, Fiorella; Torres Rivera, Juan Miguel (Universidad Peruana de Ciencias Aplicadas (UPC), 2018-01-23)
      Objective: This in vitro study compared the fiberglass posts bond strength treated with differents surface treatments before their cementation. Materials and Methods: Forty bovine teeth were seccionated in two, obtaining 21mm bovine roots. Bovine roots were endodontically treated and randomly divided into four groups according to the surface treatment of the post: Group 1 (Silane), Group 2 (Phosphoric Acid, Silane), Group 3 (Hydrogen Peroxide, Silane) and Group 4 (Silane, Adhesive). After that, the fiber posts were cemented with a resin agent (RelyX U200 - 3M ESPE), according manufacturer instructions and the samples were stored for 24 hours in distilled water at 37 °C. Roots were cut in slides in a digital cutting machine in order to obtain a 1 mm sample. Push out test was used to measure the bond strength at the speed of 0.5 mm/min. Results: The adhesion strength of the groups did show differences in their medians (p = 0.010). In the pairwise comparisons where it was using the Kruskal Wallis test, the (Group 1 vs. Group 3), (Group 1 vs. Group 4), (Group 2 vs. Group 3), and (Group 2 vs. Group 4) did found statistically significant differences (p = 0.010, p = 0.004, p = 0.009, p = 0.019).In the other pairwise comparisons using the posthoc of kruskall wallis test, the (Group 1 vs. Group 2), and (Group 3 vs. Group 4), were no found statistically significant differences (p = 0.394 and p = 0.387),so the Group 3 and Group 4 had higher adhesion forces (median of 3.49 MPa and 4.13 MPa respectively). Conclusion: The surface treatment of the fiberglass post, with Hydrogen Peroxide with Silane, and Silane with Adhesive obtained better results of adhesive strength.
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    • Estimación de la edad basada en el volumen de la cámara pulpar de primeras molares superiores mediante tomografías computarizadas en una muestra de adultos en Lima

      Agurto Huerta, Andrés; MOLINA SUSANO, EDSON BRANDON (Universidad Peruana de Ciencias Aplicadas (UPC), 2017-11-15)
      Objetivo: Estimar la edad basada en el volumen de la cámara pulpar de primeras molares superiores permanentes mediante tomografías computarizadas de haz cónico (CBCT) obtenidas en un centro radiológico de Lima, 2016. Materiales y métodos: Estudio transversal que incluyó a 300 primeras molares superiores permanentes sanas y vistas en CBCT para establecer un modelo matemático de 99 mujeres y 95 pacientes varones entre 11 y 70 años. Todas las imágenes CBCT se adquirieron por el equipo PROMAX 3D de la Empresa Planmeca® y se reconstruyeron con un tamaño vóxel de 0,16 mm. Posteriormente, las imágenes se exportaron como conjuntos de datos DICOM y se importaron en una imagen 3D de segmentación automática y software de conteo de vóxeles ROMEXIS 3.4.0.R para el cálculo de los volúmenes de la cámara pulpar. Un análisis de regresión lineal se llevó a cabo con la edad como variable dependiente y el volumen de la cámara pulpar como variable independiente para establecer un modelo matemático. Se consideró a una persona como cluster. Inicialmente, evaluamos la correlación (Coeficiente de Pearson) entre la edad real y el volumen de la cámara pulpar. Para identificar la exactitud del modelo matemático se evaluó el error estándar para calcular el intervalo de confianza al 95% de los estimados. Además, se comparó los coeficientes de determinación entre la muestra total con ambos sexos. Resultados: La correlación entre la edad cronológica y el volumen de la cámara pulpar fue de –0.83. El modelo matemático de estimación para toda la muestra fue: EDAD=-1.197444*(volumen de la cámara pulpar)+61.33765. Las regresiones fueron estadísticamente significativas (p<0,001). El coeficiente de determinación (R2) para la muestra total fue de 0.695. Sin embargo, al estratificar por sexo fue más alto (0.733) en el sexo femenino. El modelo mostró una precisión de ± 4.94 años en la edad estimada. Conclusión: El volumen de la cámara pulpar explica el 70% de la variabilidad de la edad, por lo tanto podría ser un indicador útil para la estimación de la edad humana con una exactitud razonable.
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    • Anatomía de los senos maxilares: correlación clínica y radiológica

      Vargas Arze, Nelson Javier (Universidad Peruana de Ciencias Aplicadas (UPC), 2014-12-01)
      Los senos maxilares y las raíces de las piezas dentarias posteriores, se encuentran próximas y en estrecha relación, por lo tanto es importante que el cirujano dentista esté en la capacidad de prevenir el compromiso de estas estructuras anatómicas mediante una adecuada evaluación radiográfica. El propósito de este artículo es realizar, desde el punto de vista radiográfico, una breve descripción de las variantes anatómicas y de algunas alteraciones a nivel de los senos maxilares.
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    • Estudio comparativo del índice de placa posterior a la aplicación de dos materiales educativos en diferentes intervalos de tiempo

      Berastain Arenas, Juan Francisco; Maccha, Lessly; Montenegro Guzman, Heydi Margarita (Universidad Peruana de Ciencias Aplicadas (UPC), 2017-11-09)
      Objective: The aim of this study was to compare the plaque index after the application of two educational materials in different time intervals. Materials and Methods: 100 students aged 10 to 12 years old were evaluated. The sample was divided into four groups, received educational interventions on oral health in different periods of time (every 15 or 30 days) and educational material (physical or multimedia) for three months. Subsequently, the index of the dental plate was evaluated according to O'Leary plaque index. Results: The analysis showed statistically significant differences in the four groups when evaluating the plaque index after performing the educational interventions (p <0.01). In the last control, plaque values of 20.2 and 19.4 were found for groups educated every 15 days with physical and multimedia material. In the groups with interventions every 30 days with physical and multimedia material, values of 15.3 and 15.2 were found, respectively, with no significant difference between the latter results. Conclusion: Better results were obtained in the educated groups every 30 days, regardless of the educational material applied. Educational interventions could help improve the oral health of schoolchildren in this population.
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    • Microfiltración coronal de un material de restauración temporal experimental para su uso en endodoncia

      Gonzales Soto, Nestor; Junes Prado, Luisa Stephanie Nohelya (Universidad Peruana de Ciencias Aplicadas (UPC), 2017-03)
      Coronal microfiltration caused by temporary restorative materials is considered one of the causes of failure in endodontic treatments. As a result, in recent years it has been sought to create a temporary restoration material that is capable of avoiding this problem. Objective: compare in vitro coronal microfiltration of an "experimental cement" and four temporary restorative materials used in endodontics. Materials and methods: Class I cavities were made in 90 premolars, divided into 10 groups (n = 9) and evaluated in two time periods (1 and 2 weeks. The experimental cement was elaborated, later the coronal sealing of the dental pieces was carried out, with experimental Cement,F (VOCO), Eugenato (MOYCO), Ketac ™ Molar Easymix 3M (ESPE) and Coltosol®F were used for the preparation of the experimental. The specimens were immersed in Chinese ink (Pelikan) for 1 and 2 weeks. Microfiltration at the dentinal wall-temporal restoration interface was evaluated using a stereomicroscope (Leica Microsystems LAS EZ version 2.0.0). Results: We found statistically significant differences (p <0.05) when coronal microfiltration of the five temporary restoration materials were compared, according to the ink exposure time (1 and 2 weeks). In both weeks, the experimental cement presented less filtration than Coltosol® F and Ketac ™ Molar Easymix 3M (ESPE). On the other hand, when comparing the coronal microfiltration of the experimental cement with each of the temporary restoration materials, we found statistically significant differences for the experimental group - Ketac ™ Molar Easymix 3M (ESPE) in the first week (p <0.001) and in the second week (p = 0.003). Conclusion: Experimental Cement presented lower microfiltration than Coltosol® F and Ketac ™ Molar EasyMix 3M (ESPE). However, none of the materials were able to prevent microfiltration totally
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    • Factores asociados a la reabsorción radicular inflamatoria en molares deciduas de pacientes de odontopediatría de una clínica docente en Lima, 2011-2015

      Geller Palti, Dafna; Quiñones Ascanoa, Silvana Milagros; Valiente Siles, Adriana Liliana (Universidad Peruana de Ciencias Aplicadas (UPC), 2017-08-03)
      Objective. To determine the prevalence and associated factors of inflammatory root resorption (RRI) in primary molars in children of 3 to 10 years of age, who were attending at the Clínica Docente in Lima, Peru during the years 2011-2015. Methods. Clinical histories and periapical radiographs and bitewings of the primary molars were evaluated to determine the presence of inflammatory root resorption. Variables such age, gender and medical history of pulp treatments and previous restorations, carious lesions with or without pulp involvement and the presence of osteolytic process were also evaluated. All the data were analyzed using simple and multiple Poisson regression models and their confidence intervals were of 95% to calculate crude and adjusted prevalence ratios (RPa). Results. Were included 566 children and 1744 primary molars. The 52.9% were male; mean age 6.3 years (d.e. 0.9). The prevalence of RRI was 25.3%. Children with history of caries with pulp involvement [RPa:4.45; IC95%:3.44 a 5.75], pulp treatment [RPa:5.00;IC95%:3.79 a 6.61], the osteolytic process [RPa:3.04;IC95%:2.58 a 3.60] and age [RPa: 1.09; IC95%:1.05 a 1.13]. were factors asssociated with RRI. Conclusions. One of four patients had RRI. Carious lesions with pulp involvement, pulp treatment and osteolytic process were associated with a higher prevalence of RRI.
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    • Asociación del índice de masa corporal con la presencia de caries dental en escolares de 6 a 12 años

      Ñaupari, José Raúl; Díaz Novoa, Jeannete; Castellares Espinoza, Dacy Fiorella; Ramos Mejía, Pedro Martín (Universidad Peruana de Ciencias Aplicadas (UPC), 2017-07-11)
      Objective: To determine the association of body mass index with the presence of dental caries in schoolchildren aged from 6 to 12 years attending to the school No. 7076 "Brisas de Villa" UGEL - 07 - Chorrillos in 2016. Methods: The present study was descriptive and cross-sectional. It was performed on 402 schoolchildren from ages 6 and 12, men and female. Likewise, CMF / dmf, DMF with gender, age and O'leary index were associated. Results: 402 schoolchildren were observed and dental caries was evaluated clinically by the DMF and dmf index, obtaining an average value of 2.09 ± 2.48 and for the dmf of 4.09 ± 3.79. 52.24% of the students were not overweight or obese, 25.37% were found to have an overweight problem and 22.39% were found to have obesity problems. There was no statistically significant association between BMI and presence of dental caries. However, there was an association between dental caries and oral hygiene index. Conclusion: There is no significant relationship between dental caries and BMI in the study population. However, the presence of dental caries and nutritional problems in schoolchildren are high.
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