Examinando por Autor "Del Castillo Ayquipa, Armando"

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(Universidad Privada Norbert Wiener, 2012) Altamirano Canales, Dayvi Ramiro; Del Castillo Ayquipa, Armando
The objective of this research was to evaluate in vitro the degree of microleakage in the cementation of prefabricated fiberglass posts using two types of adhesive cementing agents (dual-cure resin cement and flowable resin). The sample consisted of 32 single-rooted teeth (lower premolars) recently extracted. All teeth underwent root canal treatments and were then randomly distributed into two groups: in 16 teeth, translucent fiberglass prefabricated posts were installed using dual-cure resin cement, and in the remaining 16 teeth, the same posts were cemented using flowable light-cured resin. The sample was coated with nail varnish on the entire length of the root and then immersed in 5% methylene blue for 7 days to allow passive filtration. The teeth were sectioned by wear to observe the microleakage of the dye, which was recorded through high-precision digital photographs. Microleakage was then measured using Adobe® Illustrator® CS5.5 with the “Transform” tool. The data were analyzed using the independent samples t-test, which showed a statistically significant difference between the study groups (p < 0.05). The study concluded that the degree of microleakage in the cementation of prefabricated fiberglass posts is lower with flowable resin compared to dual-cure resin cement.
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Comparison of the microfiltration degree in direct composite resin restorations using two Adper Single Bond 2 and Single Bond Universal adhesive systems
(Universidad Privada Norbert Wiener, 2019-06-19) Chipana Damian, Angel Abilio; Del Castillo Ayquipa, Armando
The purpose of this study was to determine the degree of microleakage in composite resins associated with the adhesives Adper Single Bond 2 and Single Bond Universal in a Class II Black cavity preparation. This in vitro study was quasi-experimental, prospective, and cross-sectional. Thirty upper premolars extracted for orthodontic reasons were collected, washed with 0.1% thymol solution for disinfection, and stored in physiological saline to prevent dehydration, following inclusion and exclusion criteria. The 30 samples were randomly divided into two groups: Group A (Adper Single Bond 2 adhesive system) and Group B (Single Bond Universal adhesive system with selective etching). The samples underwent Class II Black cavity preparations. They were subjected to 200 thermocycling cycles at temperatures of 5°C and 55°C, then immersed in 2% methylene blue solution for 24 hours. Microleakage identification was performed using photographs taken with a Canon T61 camera mounted on a tripod to ensure a consistent distance across all samples. Measurements were made in millimeters using Adobe Illustrator CS6 and converted to quantitative microleakage data through a simple three-rule calculation. Statistical analysis was conducted using the Student's t-test for independent samples. The results demonstrated that Adper Single Bond 2 exhibited greater microleakage, while Single Bond Universal showed a lower degree of microleakage. It was concluded that there are statistically and clinically significant differences between the two adhesive groups.
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Evaluation of the parallelism of the Camper plane and the occlusal plane according to the facial biotype in dentistry students at the Private University Norbert Wiener, Lima 2019
(Universidad Privada Norbert Wiener, 2019-11-20) García Huamaliano, Ruben Darío; Del Castillo Ayquipa, Armando
The objective of this research was to determine the parallelism between the three types of Camper’s planes and the occlusal plane based on facial biotype. The population consisted of students from the Norbert Wiener Private University. The sample included 45 lateral cephalometric radiographs, 33 from women and 12 from men. Methodology: The facial biotype was determined using the NEMOCEF software, and the angles were measured with the FACAD software. Radiopaque markers were placed at the base of the nose wing and the upper, middle, and lower tragus, establishing three Camper planes. These were then related to the cephalometric Camper plane and the original Camper plane. The ANOVA statistical test and the post hoc Tukey’s HSD test were performed to compare the angles between the three types of Camper’s planes and the occlusal plane, looking for differences. Results: 90.0% of women were dolichofacial, compared to 10% of men; 71.4% of women were brachyfacial, compared to 28.6% of men; and 66.7% of women were mesofacial, compared to 26.7% of men. The average angular measurement of the middle Camper plane in brachyfacials was 24.8214°, in mesofacials 24.9381°, and the lower Camper plane 24.4600° in dolichofacials. Conclusion: The middle Camper plane was most parallel to the occlusal plane in brachyfacial and mesofacial subjects, while the lower Camper plane was most parallel to the occlusal plane in dolichofacial subjects.
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Frequency of partial edentulism according to the Kennedy classification in people aged 20 to 80 years in Margos district, Huánuco 2018
(Universidad Privada Norbert Wiener, 2019-01-24) Huacachino Mallqui, Rosio; Del Castillo Ayquipa, Armando
The objective of this study was to determine the frequency of partial edentulism according to Kennedy's classification in individuals aged 20 to 80 years in the district of Margos-2018. The study had a descriptive, prospective, and cross-sectional approach. A total of 358 individuals from the district of Margos, Huánuco region, were evaluated. The Chi-square test was applied for the data analysis. The results showed that, of the 358 cases evaluated according to Kennedy's classification, Class III was the most frequent, representing 63.13% of cases, followed by Class II with 29.89%, Class I with 25.98%, and only 5.87% of cases with Class IV. Class III was most frequent in 63.9% of females and 62.2% of males (p>0.05). Regarding age groups, Class III predominated in 83.20% of individuals aged 20 to 40 years and in 60.80% of individuals aged 41 to 60 years, while Class I was more common in individuals aged 61 to 80 years (p≤0.05). Class III was most frequent in 24.30% of individuals with primary and secondary education (p≤0.05). According to maxillary type, Class III was most frequent in the upper jaw with 26.82%, in the lower jaw with 24.30%, and bimaxillary with 12.01% (p≤0.05). According to their modifications, Class III with modification 1 was the most frequent in the upper jaw with 67.92% (p≤0.05) and in the lower jaw with 62.26% (p>0.05) of all Class III cases. Conclusion: The most frequent Kennedy class was Class III in 63.13% of the cases in the population of Margos district.
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Frequency of temporomandibular joint disorders in patients with rheumatoid arthritis evaluated at the San José Callao Hospital
(Universidad Privada Norbert Wiener, 2021-03-03) Guerrero Quintana, Carol Gisela; Del Castillo Ayquipa, Armando
The aim of the study was to determine the frequency of temporomandibular joint (TMJ) disorders in patients with rheumatoid arthritis evaluated at San José Hospital, Callao. The methodology used was observational, descriptive, retrospective, and cross-sectional. A total of 125 patients diagnosed with rheumatoid arthritis were analyzed using non-probabilistic convenience sampling. The "Helkimo Index modified by Maglione" and the "Fonseca Anamnestic Index," recorded in medical histories, were employed. Statistical analysis was performed using SPSS 25, applying the chi-square test along with absolute and relative frequencies, averages, and standard deviations. Results: TMJ disorders were observed in 76.8% of patients, with a similar frequency between males and females (p=0.110), but more frequent in older age groups (p=0.039). The main signs and symptoms included a maximum mandibular opening of 30 to 39 mm, right and left lateral movements of 4 to 6 mm, and maximum protrusion of 4 to 6 mm. Additionally, 56% presented mandibular deviation and/or joint noises during opening movement, 53.6% reported pain during a single movement, 54.4% experienced pain in at least three masticatory muscles during activity, and 53.6% reported pain upon palpation in the pre-auricular region. TMJ disorders were mild, moderate, and severe in 28.0%, 19.2%, and 24.8% of patients, respectively, with similar severities between genders (p=0.049) but more severe in older age groups (p=0.005). Conclusion: Approximately 7 out of 10 patients with rheumatoid arthritis included in the study presented TMJ disorders, with similar frequency, signs, symptoms, and severity between males and females, but higher percentages in older age groups.
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Relationship between the state of conservation of total protesis and amount of salival flow of elderly patients in the Canevaro asylum Lima-2018
(Universidad Privada Norbert Wiener, 2019-11-22) Saucedo Ventura, Iris Vanesa; Del Castillo Ayquipa, Armando
This research is correlational and prospective in nature. The design is observational, as the phenomena were observed without manipulating the study variable. Additionally, it is cross-sectional, as the data were collected at a single point in time. The target population for this research consisted of 100 elderly residents at the Canevaro Nursing Home. The data collection technique employed was the survey, and the instrument used was a questionnaire, which consisted of a set of items aimed at gathering relevant information to meet the research objectives. The results showed that salivary flow was as follows: 39.0% of patients had a flow rate of 0.3 to 0.5 ml/min, 32.0% had an increased flow rate of >0.5 ml/min, and 29.0% had a decreased flow rate of <0.3 ml/min. Regarding the condition of the removable dental prosthesis, 79.0% of the patients had their total removable prosthesis regularly maintained, 11.0% had a well-maintained prosthesis, and 10.0% had a poorly maintained prosthesis. Additionally, applying the Spearman's Rho correlation yielded a coefficient of 0.055 with a significance level of 0.586 (p > 0.05). The study concluded that the amount of salivary flow is not related to the condition of the total removable dental prosthesis.
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Relationship of the occlusal vertical dimension by means of the Ladda method according to facial biotype, in dentistry students of the Norbert Wiener private university
(Universidad Privada Norbert Wiener, 2021-07-23) Campos Bastidas, Jacqueline Sonia; Del Castillo Ayquipa, Armando
The primary objective of this research was to determine the relationship between Occlusal Vertical Dimension (OVD) using the Ladda method and facial biotype in dentistry students at Universidad Privada Norbert Wiener. Methods: This descriptive and cross-sectional study included a sample of 201 students of both sexes, selected based on inclusion criteria. Facial biotype was determined using the total morphological facial index. Measurements were taken using a TRUPER digital caliper (150 mm x 0.01 mm). OVD was measured using the Ladda method, which involves the length of the index and little fingers of the right hand. Results: The study found statistically significant differences in OVD between at least two groups. Highly significant differences were observed between brachyfacial and mesofacial groups (p<0.05) and between mesofacial and dolichofacial groups (p<0.01). The study concluded that the dolichofacial biotype showed a high positive correlation with both the little finger and index finger. A general correlation was observed in both sexes between OVD and finger lengths. For males, OVD showed a low but significant correlation with the index finger (p<0.01) and the little finger (p<0.05). For females, OVD also showed a low but significant correlation with both the index and little fingers (p<0.01). Conclusion: This method is reliable, cost-effective, reproducible, and non-invasive for the patient.