Now showing items 1-20 of 120

    • Prevalencia de doblez del bisel de agujas usadas en pacientes bajo anestesia troncular atendidos en la clínica docente UPC durante el periodo 2016-1

      Ghersi Miranda, Hugo Dante; Jacinto Domínguez, Juan Javier Teodoro; Roca del Águila, Gerson Raúl (Universidad Peruana de Ciencias Aplicadas (UPC), 2018-04-02)
      Objetivo: Determinar la prevalencia de doblez del bisel de agujas usadas en pacientes bajo anestesia troncular atendidos en la Clínica Docente UPC durante el periodo 2016-I. Métodos: Se realizó un estudio transversal siendo la unidad de análisis una aguja dental larga de 27 G utilizada en pacientes bajo anestesia troncular. Previamente recolectadas y desinfectadas, las agujas fueron llevadas a un laboratorio para ser observadas mediante un Estereomicroscopio. Una vez observadas, se midió la angulación del doblez con el software Meazure® 2.0. Los datos se analizaron calculando porcentajes y para las asociaciones se utilizó la prueba de chi cuadrado. El tamaño muestral incluido fue de 239 agujas, las cuales fueron ordenadas en 5 grupos según el semestre de Clínica cursado por el operador. Las variables utilizadas fueron categóricas, estas fueron: Semestre de Clínica cursado por el operador, prevalencia, grado y orientación del doblez del bisel. Resultados: Se encontró una prevalencia de 80.42% de doblez del total de agujas, así como un mayor porcentaje de doblez leve (36.57%) en el análisis de la variable grado de doblez. Por otro lado, la orientación de doblez que más se presentó fue el doblez interno (51.67%). Conclusión: Se encontró que un 80.42% de las agujas analizadas presentan doblez, siendo el doblez leve y doblez interno los porcentajes de deformación del doblez de bisel más presentes.
    • Evaluación de la eficacia antimicrobianas de tres soluciones como protocolo para la limpieza y desinfección de los cepillos dentales

      Casas Apayco, Leslie Caroll; Paredes Rivera, Ruth del Rosario (Universidad Peruana de Ciencias Aplicadas (UPC), 2018-01-16)
      Objective: The purpose of this study was to evaluate the antibacterial efficacy of three solutions (Colgate Plax ®, Dento Aliento Fresco ® y Perioagar ®) as protocol for cleaning and disinfection of selected. Every participant used an antimicrobial solution on the toothbrushes for a period of seven days, in a total of 4 weeks in the following order: week 1 sterile water, week 2 Colgate Plax ®, week 3 Dento Aliento Fresco ® and week 4 Perioagar ®; Each volunteer received a spray with the antimicrobial solution, a toothbrush, a toothpaste, and a infographic paper with instruction on how touse the spray. Every seven days the samples were collected and taken to the laboratory for microbiologic procedures. After that, colonies units forming were counted. Results: In the case of Colgate Plax ® and Periogard ® bacterial load decreases in 61.5% and 57.7% of cases respectively. While for Dento Aliento Fresco ® bacteria decreases in 23.1% of the cases. The average colonies per plate was 217.44 UFC (16/26 cases), 5.2 UFC (15/26 cases) and 151.7 UFC (6/26 cases) to Colgate Plax ® mouthwashes, Perio- Aid ® and Dento Breath Fresco ® respectively Conclusions: Chlorhexidine 0.12% (Perioagar ®) had the lowest average of colonies per plate compared to the other two tested solutions.toothbrushes. Materials and Methods: The study was a crossover where 26 people were randomly.
    • Comparación In Vitro de la resistencia a la tensión diametral de dos resinas tipo Bulk Fill Aura® (SDI) Y Tetric-N-Ceram® (Ivoclar Vivadent) sometidas a dos bebidas energizantes Red Bull® Y Volt

      Hermoza Novoa, Mónica; Delgado Navarro, Betsabé Kelly (Universidad Peruana de Ciencias Aplicadas (UPC), 2018-03-15)
      Objective: Compare in vitro diametral tensile strength of two Bulk Fill Aura® (SDI) and Tetric-N-Ceram® type resins subjected to two Red Bull® and Volt energy drinks. Materials and methods: The study was experimental in vitro. 132 Bulk Fill type resin bodies were evaluated, which were divided into six groups of 22 resin bodies each. Groups 1, 2 and 3 were made with Aura® resin (SDI) and groups 4, 5 and 6 with Tetric-N-Ceram® resin. Groups 1 and 4 were submerged in the Red Bull® energy drink and groups 2 and 5 in the Volt energy drink for 10 min / 1 time a day for 7 days. On the other hand, groups 3 and 6 were control groups, only immersed in distilled water for 7 days. The diametral tensile strength was evaluated through the Instron® universal test machine (speed 0.5mm / min - load 100 KN), measured in MPa. To evaluate the results of each of the variables and perform the univariate analysis, we proceeded to obtain measures of central tendency and measures of dispersion. To evaluate the bivariate analysis, the Kruskal Wallis test was carried out. Results: The control group of the Aura® resin presented a mean and a S.D of 46.51 + 3.14, while the control group of the Tetric-N-Ceram® resin presented 46.04 + 3.22. It was found that the Aura® resin when submerged in Red Bull® presented an average and a S.D of 35.58 + 7.63, while when submerged in Volt, it presented 35.24 + 5.13. On the other hand, the Tetric-N-Ceram® resin after being submerged in the Red Bull® presented a mean and a S.D of 37.46 + 6.18, while when submerged in Volt it presented 36.15 + 6.74. Conclusions: There are no statistically significant differences when evaluating the resistance to the diametral tension strength of the Bulk Fill type resins, submitted to the Red Bull® energy drink (p = 0.796), or to Volt (p = 0.496).
    • Evaluación de la dimensión y morfología del cóndilo mandibular en pacientes peruanos con el patrón esquelético clase I utilizando tomografías Cone Beam

      Ghersi Miranda, Hugo Dante; Caballero García, Carmen Stefany; Bustamante Flores, Carmen Rosa; Labrin Valdiviezo, Vanessa Milagros (Universidad Peruana de Ciencias Aplicadas (UPC), 2018-02-27)
      Objective: To evaluate the dimension and morphology of the mandibular condyle with the Class I skeletal pattern using Cone Beam tomography in patients aged 18 to over during the period 2016-2017. Materials and methods: We evaluated 71 tomographies from a diagnostic imaging center in the city of Lima, Peru. The antero-posterior diameter (A-P) and the medial-lateral diameter (M-L) in mm were evaluated. The coronal and sagittal plane morphology was also evaluated. Results: Measurements of the anterior-posterior diameter of the right condyle has a mean of 8.72 mm ± 1.25 and the left a mean of 8.50 mm ± 1.50. The medial - lateral diameter of the right condyle has a mean of 19.24 mm ± 2.03 and the left diameter has a mean of 18.97 mm ± 1.87. The condyle morphology with the highest prevalence in the study was round. The dimension of the left condyle in the mid - lateral plane had greater length in the male sex (p> 0.05). Conclusion: The morphology with the greatest manifestation in this study was of the round type. It was shown that there is a significant difference (p <0.05) of the left condyle in the medial-lateral diameter in relation to the sex. However, we found no association between the condyle morphology and sex.
    • Comparación de la percepción de estética facial en perfiles entre alumnos, odontólogos y pacientes

      Salinas Caldas, Pedro; Caballero García, Stefany; Arce Silva, Huberto Gonzalo (Universidad Peruana de Ciencias Aplicadas (UPC), 2018-03-01)
      Objective: To compare the perception of facial aesthetics in patients, among students, patients and teachers of the UPC health center. Materials and Methods: A panel of 45 dentist, 45 dental students and 45 patients evaluated the facial aesthetics in the profile of 12 patients (3 patients for each malocclusion) using a visual analog scale (VAS) rating from 0 to 10 (from less to more attractive). Results: The results showed that for the three groups studied the most aesthetic malocclusion was the class II division 2. In addition. It was demonstrated that the student group was the strictest group and the one that rated profiles more negatively. Conclusions: The study supports the idea that the perception of aesthetic varies according to different populations. The results show class II division 2 malocclusion as the most aesthetic which differs to similar studies performed in foreign populations.
    • Comparación In Vitro de la fuerza tensional residual de una cadena elastomérica expuesta a colutorios dentales con y sin alcohol

      Córdova Berrocal, Andrés; Mendoza Trujillo, Hugo Rodrigo; Diaz Alarcon, Paola Violeta (Universidad Peruana de Ciencias Aplicadas (UPC), 2018-03-08)
      Objetivo: Comparar la fuerza tensional residual de las cadenas elastoméricas DentsplyTM GAC (NY, USA) expuestas a colutorios dentales Listerine® con alcohol y sin él. Materiales y métodos: Se utilizaron 325 cadenas elastoméricas DentsplyTM GAC grises de tramo corto (NY, USA, lote 00051188) divididas en 13 grupos: uno para la medición inicial y 12 grupos distribuidos en función de la solución que será expuesta (agua destilada, Listerine® con alcohol y Listerine® sin alcohol) y al tiempo de medición (1 hora, 1 día, 7 días y 14 días). Las cadenas se colocaron en unos jigs de acrílico que las mantenían estiradas a 23,5 mm. Se realizó la medición de la fuerza tensional de cada muestra en los periodos ya mencionados con la máquina Instron®. Resultados: Para comparar la fuerza tensional residual entre los grupos se realizaron las pruebas de Kruskal Wallis. No se encontró diferencia significativa entre las fuerzas de las cadenas de cada grupo en los controles a la hora, un día y 14 días. En la medición a los 7 días sí se encontró (p = 0,001); sin embargo, esta diferencia se le atribuía al comparar los grupos experimentales con el de control. Conclusiones: No se evidenció una diferencia estadísticamente significativa en la fuerza tensional residual de las cadenas elastoméricas entre los grupos experimentales con el grupo de control en los diferentes tiempos de medición. Lo que significa que el alcohol en los colutorios dentales no es un factor que influye negativamente en la fuerza de las cadenas elastoméricas.
    • Comparación in vitro del efecto del tipo de luz led de tercera generación (Valo® - Ultradent©) vs. Luz led de segunda generación (Elipar™ - 3M Espe™) en la resistencia de unión del cemento Relyx® U200 al cerómero SR Adoro® - Ivoclar Vivadent®

      Casas Apayco, Leslie Caroll; Cafferata Montoya, Paola Antonella; Araujo Herrera, Nicoll Antuanette; Behrens Peñaloza, Sebastian (Universidad Peruana de Ciencias Aplicadas (UPC), 2018-01-30)
      Purpose: Make an in vitro comparison of the effect of using a second- and third-generation LED curing light on the bond strength of an indirect resin composite to dental enamel cemented with a self-adhesive resin cement. Materials and methods: 44 SR ADORO® indirect resin composite blocks were cemented on 44 bovine incisors using two LED curing lights: ELIPAR™ - 3M ESPE™ (second-generation, 1150 mW/cm2) and VALO® - ULTRADENT© (third-generation - 1400 mW/cm2) and a self-adhesive resin cement (RELYX® U200). The dental curing units’ light intensities were previously measured with a radiometer (Monitex; DigiRate LM 100 - China). The samples were randomly divided into two groups (n=22): Group 1: polymerization was done using the VALO® - ULTRADENT© dental curing unit, group 2: polymerization was done using the ELIPAR™ - 3M ESPE™ dental curing unit. The indirect resin composite blocks were made in a 4mm x 6mm matrix. The cementation of the indirect composite blocks was done with slight vertical pressure on the center of the buccal surface of the tooth and removing the excess resin cement with a microbrush. The curing light was applied for 20 seconds on four sides of the sample. The shear bond strength test was performed in a universal testing machine (3382 INSTRON®-U.S.A). The results of each group were compared using the Mann-Whitney U test. Results: Group 1 (VALO® - ULTRADENT©) resulted in an average bond strength of 5.84 MPa +-2.04, while group 2 (ELIPAR™ - 3M ESPE™) showed an average of 4.16 MPa +-1.25. Statistically significant differences were found (p= 0.0045). Conclusion: Third-generation LED curing lights generate a higher bond strength compared to second-generation curing lights when used to cement indirect resin composites with self-adhesive resin cements.
    • Caries dental en primeras molares permanentes y segundas molares deciduas, según el sistema internacional de evaluación y detección de caries (ICDAS), en relación a la edad y el género de los niños de una Institución Educativa Nacional del distrito de Ate

      Barragán Salazar, Nathaly Carolina; Marin Leiva, Maria Jose (Universidad Peruana de Ciencias Aplicadas (UPC), 2017-09-11)
      Objective: Determine the first permanent and second deciduous molar dental cavity frequency in relation to kids age and gender, in an Educational National Institution in Ate district, during the 2014-2015 period. Materials and methods: This was retrospective study. The unit of analysis was conformed by epidemiological records from 218 kids, between 8 and 10 years old, both female and male, from a public Educational Institution in Ate district, evaluated between 2014 and 2015. Results: The codes with a highest prevalence both in permanent and deciduous molars were 1, 2 and 3, related to enamel cavities. However, the pieces 85 and 46 presented greater prevalence in codes 4 and 6, in 8 and 10 year olds, which relate to dentin cavities. In regards to the gender, both male and female presented greater prevalence in codes 1, 2 and 3. Conclusions: The inclusion of non-cavitated caries lesions is necessary in the caries registers, since these injuries can be stopped through preventive treatment and diagnostic disease development. Nowadays, it is knowledge important because it prevent the development of the pathology, whose purpose would be to maintain the integrity of the dental structure and therefore promote the optimum state of the oral and integral health.
    • Evaluación del espesor del esmalte en primeras premolares y primeras molares permanentes

      Casas Apayco, Leslie Caroll; Rojas Quintanilla, Feliciano; Guerra Gonzalez, Diego Andrés (Universidad Peruana de Ciencias Aplicadas (UPC), 2018-01-30)
      Objective: to assess the thickness of the permanent human tooth enamel, in portions vestibular/palatal-lingual, according to the thirds coronal cervical, middle and incisal. Materials and Methods: A sample of 75 healthy teeth, divided into first premolars (n=25), first molars (n=25) and first molars (n=25). Were cut in strips of 1 mm thick in a digital cutting machine. The measurements were made according to the thirds coronal, cervical, middle and incisal, using a digital gauge to perform the measurement in (mm). A descriptive statistics (mean and standard deviation) of the study variables. Results: The increased thickness of the enamel on the vestibular sense is in the incisal third, with an average of 1.53 mm 0.20 belonging to the molars and the lower value is found in the cervical third with an average of 0.64 mm 0.08 corresponding to the first molars. While, in the palatal/lingual sense, the highest value found is in the incisal third with an average of 1.50 mm 0.19, belonging to the first molars, and the lowest value is in the cervical third with an average of 0.65 mm 0.09 belonging to the first molars. Conclusions: The thickness of the enamel on the vestibular sense as palatal/lingual is greater in the incisal third and lower in the cervical third for the three groups of dental pieces. This knowledge will allow for wear to the tooth in a more conservative doing treatments highly functional and aesthetic.
    • Comparación in vitro de la microdureza superficial de 2 resinas compuestas tipo Bulk Fill sometidas a bebidas energizantes

      Hermoza Novoa, Mónica; Suarez Hoces, Joanna Marisol Elena (Universidad Peruana de Ciencias Aplicadas (UPC), 2018-01-03)
      Objective: The purpose of this study, in vitro, was to compare the surface microhardness of two Bulk Fill resins immersed in energizing beverages. Materials and Methods: A total of 60 resin blocks divided into two groups (n = 30) were used according to each brand of Tetric® N-Ceram Bulk Fill (TNC) and Aura Bulk Fill (Aura) resin, which in turn were divided into Two subgroups (15 resin samples per Red Bull® and Volt®: G1: TNC + Red Bull®, G2: TNC + Volt®, G3: Aura + Red Bull®, G4: Aura + Volt® energizing drink. The microhardness before and after being inmersed to the action of the energizing drinks by the erosive challenge performed in 40 ml of each energizing drink / 15 test bodies of each group (10 minutes + 1 time day / 5 days). Data was analyzed with Student's t-test. Results: The initial and final microhardness values were obtained: G1 74.46 kg / mm2 + - 5.98 / 60.33 kg / mm2 + - 6.95, G2 74.8 kg / mm2 + - 6.15 / 60.4 kg / mm2 + - 7.05, G3 57 kg / Mm2 + - 8.41 / 42 kg / mm2 + - 8.82, G4 53.13 kg / mm2 + - 6.66 / 41.73 kg / mm2 + - 8.14. When comparing the erosive effect of both energizing drinks, these did not present significant differences for the Tetric N-Ceram Bulk Fill resin (p = 0.59). However, the Aura Bulk Fill inmersed in Volt had significant differences (p = 0.022), showing that this beverage presented greater erosive effect than the Red Bull beverage. Conclusion: When comparing the surface microhardness of both resins before and after the in vitro erosive challenge of the energizing drinks, the Tetric N-Ceram Bulk Fill resin presented a smaller reduction of superficial microhardness in comparison to the resin Aura Bulk Fill.
    • 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.
    • 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.
    • 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.
    • 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.
    • 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).
    • 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.
    • 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.
    • 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.
    • 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.