Recent Submissions

  • Association between knowledge and attitudes towards pediatric obstructive sleep apnea and dental specialty

    Díaz-Díaz, María Fernanda; Schlaefli-Arrieta, Ximena; Caballero García, Stefany; Geller Palti, Dafna (Taylor and Francis Ltd., 2023-01-01)
    Objective: To associate the knowledge and attitudes about Pediatric Obstructive Sleep Apnea (POSA) with the specialty of dentists in Metropolitan Lima, Peru. Methods: A cross-sectional, analytical observational study was carried out during 2021–2022. Two hundred and ten orthodontists and pediatric dentists were surveyed using the adapted and validated Spanish translation of the OSAKA-KIDS questionnaire and additional sociodemographic questions. Results: The data indicated an association between dental specialty and the professional’s knowledge about POSA. Orthodontists were 59% less likely to have acceptable knowledge, compared to pediatric dentists (p =.013, IC 95% 0.21–0.83). The study revealed an association between the professional’s attitudes and three intervening variables: age (p =.025), clinical experience (p =.049) and sector of practice (p =.020). Conclusion: Knowledge was associated with the dental specialty of professionals in the sample included, whilst attitudes were not.
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  • Confidence when performing single root canal treatments of the 4th and 5th year students of the Dentistry at a Private University of Lima

    Valdez Sosa, A. F.; Ayma-León, V.; Caballero-García, Carmen Stefany (Ediciones Avances S.L., 2023-04-01)
    Objective: To determine the confidence when performing single root canal treatments of the 4th and 5th year students of the Dentistry at a Private University of Lima. Materials and Methods: Eighty-one dental students from a private university in Lima were evaluated through a survey of the article prepared by Davey to measure their confidence when performing single root canal treatment. Internal validity was verified through questionnaire translation processes, expert judgment and a pilot test. Adequate coefficient of Aiken’s V (0.91), Cronbach’s Alpha (0.89), and Spearman’s correlation (0.61) were obtained. Descriptive statistical measures were obtained (Mean, S.D, Median, and IQR) and for the bivariate analysis, U Mann Whitney’s, Kruskal Wa-llis, Dunn Test and Spearman’s Correlation tests were used. Results: Students had a high confidence score (8.51) when performing a single root canal treatment and the lowest scores were when determining the length of work and the obturation of the canals with an average of 8.19 and 8.01 respectively. Likewise, the variables as previous experience, perception of complication and having had difficulties were statistically significant. Finally, a positive correlation was found between the dimensions of the variable perception of teaching in endodontics (p=0.003) (p=0.000) (p=0.000) and the variable confidence. Conclusions: There is high confidence when performing single root canal treatment by the students of 4th and 5th year of the Dentistry career.
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  • A digital technique for cloning the emergence profile of the interim to the definitive implant-supported restoration

    Gallardo, Yolanda Natali Raico; Noriega, Jorge; Rodrigues-Olivio, Isabela; Sesma, Newton (Elsevier Inc., 2023-01-01)
    The subgingival contour of implant-supported restorations is key to ensuring the long-term health of the peri-implant bone and soft tissues. This report describes a step-by-step technique used to accurately clone the emergence profile of the interim crown for the definitive implant-supported restoration.
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  • IMPACT OF E-CIGARETTES USE ON THE ORAL HEALTH-RELATED QUALITY OF LIFE AMONG YOUNG PEOPLE IN METROPOLITAN LIMA

    Vargas-Claudio, Fernando; Castilla-Minaya, Olga; Leon-Rios, Ximena (Universidad de Concepcion, 2023-04-04)
    Aim: To determine the ef fects of e-cigarette use on oral health-related quality of life (OHRQOL) in young people in Metropolitan Lima. Materials and Methods: This observational, analytical and cross-sectional study was performed with 189 individuals (age, 18–29 years) who used electronic cigarettes. The OHIP-Sp5 instrument was used to assess OHRQOL. Results: The use of e-cigarettes was higher among male participants (47.79%) than that among the female participants (26.32%). The mean OHRQOL scores of individuals who did and did not use e-cigarettes were 3.17 (2.26) and 3.12 (2.47), respectively These scores for people who did and did not use mouthwash were 2.92 (2.34) and 3.57 (2.43), respectively. Regarding orofacial pain 2.65% participants frequently reported “painful discomfort” and 7.41% of the young people presented such discomfort of orofacial aspect “frequently.” Conclusions: Recording e-cigarette uses and frequency in patients’ medical records is important, as well as incorporating educational strategies to reduce e-cigarette consumption and avoiding harmful ef fects on general health.
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  • Evaluating the Thickness of the Root Canal Dentin Wall in Primary First Molars Using Cone-beam Computed Tomography

    Justiniano-Navarro, Carlos; Caballero-García, Stefany; López-Rodriguez, Gabriela; Geller-Palti, Dafna (Jaypee Brothers Medical Publishers (P) Ltd, 2023-09-01)
    Aim: To evaluate the thickness of the root canal dentin wall in the cervical, middle, and apical third of primary first molars. Materials and methods: Cross-sectional study consisting of 30 cone-beam computed tomography (CBCT) images of primary maxillary and mandibular first molars, with crown, and root integrity. The wall dentin thickness of each canal was measured in three axial views, divided into distal (D), mesial, lingual/palatine, and buccal surfaces. Results: The smallest dentin wall thickness of the maxillary molar was located on the mesial surface of the mesiobuccal (MB) canal apical third (mean 0.55 ± 0.04 mm). The buccal and palatal (P) surfaces of the distobuccal (DB) and P canals showed the smallest dentin thickness on the cervical third (0.62 ± 0.02 mm). On the mandibular molar, we found the smallest dentin thickness on the apical third [lingual surface of the MB canal and buccal surface of the mesiolingual (ML) canal] with a mean of 0.41 ± 0.07 mm. Additionally, the dentin thickness is average of the D canal was about 0.67 ± 0.11 mm. Conclusion: It is essential to understand the primary first molar’s anatomy to reduce possible complications in pediatric patients from instrumentation during root canal treatments. Clinical significance: Pulpectomy is among the most challenging procedures in pediatric dentistry and the knowledge of the root anatomy of primary teeth allows the professional to make better clinical decisions and reduce possible risks during root canal treatment.
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  • Preclinical Evidence for the Use of Oral Mesenchymal Stem Cell-Derived Extracellular Vesicles in Bone Regenerative Therapy: A Systematic Review

    Olaechea, Allinson; Benabdellah, Karim; Vergara-Buenaventura, Andrea; Gómez-Melero, Sara; Cafferata, Emilio A.; Meza-Mauricio, Jonathan; Padial-Molina, Miguel; Galindo-Moreno, Pablo (Oxford University Press, 2023-12-01)
    The development of extracellular vesicles (EVs) therapies has revolutionized personalized medicine, opening up new possibilities for treatment. EVs have emerged as a promising therapeutic tool within this field due to their crucial role in intercellular communication across various cell types and organisms. This systematic review aims to evaluate the therapeutic potential of oral mesenchymal stem cell (MSC)-derived EVs for bone regeneration, specifically focusing on findings from preclinical models. Sixteen articles meeting the inclusion criteria were selected following document analysis. The biological effects of oral MSC-derived EVs predominantly involve the upregulation of proteins associated with angiogenesis, and inflammation resolution, alongside the downregulation of proinflammatory cytokines. Moreover, these therapeutic agents have been found to contain a significant quantity of different molecules (proteins, lipids, DNA, microRNAs, etc) further contributing to their modulatory potential. The findings from this systematic review underscore that oral MSC-derived EVs, irrespective of their specific population, have the ability to enhance the osteogenic repair response in maxillary bone or periodontal defects. In summary, this systematic review highlights the promising potential of oral MSC-derived EVs for bone regeneration based on evidence from preclinical models. The comprehensive assessment of their biological effects and the presence of microRNAs underscores their therapeutic significance. These findings support the utilization of oral MSC-derived EVs in enhancing the osteogenic repair response in various maxillary bone or periodontal defects, providing insights into the mechanisms involved and potential therapeutic applications in the field of personalized medicine.
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  • Effect of Additional Dry Heat Curing on Microflexural Strength in Three Types of Resin Composite: An In Vitro Study

    Zamalloa-Quintana, Marlon; López-Gurreonero, Carlos; Santander-Rengifo, Flor Magaly; Ladera-Castañeda, Marysela; Castro-Pérez Vargas, Antonieta; Cornejo-Pinto, Alberto; Cervantes-Ganoza, Luis; Cayo-Rojas, César (MDPI, 2022-08-01)
    Aim: Additional dry heat curing is a method that favorably influences the mechanical properties of an indirect resin composite restoration. Microflexural strength is a property currently applied for the evaluation of indirect resin composite restorations. The aim of the present study was to assess the effect of additional dry heat curing on microflexural strength in three types of direct-use resin composites. Materials and Methods: This in vitro study consisted of 70 resin composites samples made with a 6 × 2 × 1 mm metal matrix and divided into seven experimental groups, which included Gr1a: Tetric N-Ceram without additional dry heat curing (n = 10); Gr1b: Tetric N-Ceram with additional dry heat curing (n = 10); Gr 2a: Filtek Z350 XT without additional dry heat curing (n = 10); Gr2b: Filtek Z350 XT with additional dry heat curing (n = 10); Gr3a: Filtek Z250 without additional dry heat curing (n = 10); Gr3b: Filtek Z250 with additional dry heat curing (n = 10); and Gr4: SR Nexco Paste (control) without additional dry heat curing (n = 10). The samples were stored in distilled water at 37 °C for 24 h. A universal testing machine with a 2000 N load cell at a speed of 1 mm/min was used to assess flexural strength. The data were analyzed with a parametric ANOVA test with Tukey’s post hoc intergroup factor (for groups without heat treatment) and a nonparametric Kruskall Wallis test with Bonferroni’s post hoc (for groups with heat treatment). In addition, the comparison of independent groups in each resin composite type with and without heat treatment was performed with a Mann Whitney U test. A significance level of p < 0.05 was considered. Results: The Filtek Z250 resin composite with and without additional dry heat curing presented the highest microflexural strength values with 137.27 ± 24.43 MPa and 121.32 ± 9.74 MPa, respectively, while the SR Nexco Paste (control) resin composite presented the lowest microflexural strength values with 86.06 ± 14.34 MPa compared to all the resin composites with additional dry heat curing. The Filtek Z250 and Filtek Z350XT resin composites with and without additional dry heat curing presented significantly higher microflexural strength versus the SR Nexco (p < 0.05) and Tetric N-Ceram (p < 0.05) resin composites. In addition, the Filtek Z350XT and Tetric N-Ceram resin composites with additional dry heat curing showed significantly higher microflexural strength (p < 0.05) compared to those without additional dry heat curing. Conclusions: The Filtek Z250 and Z350XT resin composites had significantly higher microflexural strength values with and without additional dry heat curing. In addition, the Filtek Z350XT and Tetric N-Ceram resin composites subjected to additional dry heat curing showed significantly higher microflexural strength compared to when they did not receive the same procedure, a situation that did not occur with the Filtek Z250 resin composite.
  • Adhesive Strength in Dentin Conditioned with 18% Ethylenediaminetetraacetic Acid versus 35% Phosphoric Acid: In Vitro Study with 1-Year Artificial Aging

    Alcántara-Obispo, Esther; Santander-Rengifo, Flor; Ladera-Castañeda, Marysela; López-Gurreonero, Carlos; Castro Pérez-Vargas, Antonieta; Cornejo-Pinto, Alberto; Cervantes-Ganoza, Luis; Cayo-Rojas, César (MDPI, 2022-10-01)
    The success and longevity of a resin composite restoration is determined by its good bonding to the tooth structure, with the adhesion being a challenge to dentin due to its complexity and structural heterogeneity. The present study aimed to compare the adhesive strength of dentin conditioned with 18% ethylenediaminetetraacetic acid (EDTA) versus 35% phosphoric acid (H3PO4) in human premolars. Materials and Methods: This in vitro experimental study was performed on 40 human premolars. The occlusal thirds were sectioned and randomly placed into four groups according to the type of dentin conditioning: Group 1 (control), Group 2 (18% EDTA), Group 3 (35% H3PO4) and Group 4 (18% EDTA plus 35% H3PO4). Then, 10,000 thermocycles between 5 +/− 2 °C and 55 +/− 2 °C were applied. Adhesive strength was tested by shearing with a digital universal testing machine at a crosshead speed of 0.75 mm/min. The values obtained were analyzed in megapascals (MPa). The mean and standard deviation were used as measures of central tendency and dispersion. In addition, a one-factor intergroup ANOVA test was applied with Tukey’s post hoc test considering a significance level of p < 0.05. Results: The 18% EDTA and 18% EDTA plus 35% H3PO4 showed significantly higher adhesive strength compared to the control group that did not receive dentin conditioning (p = 0.047 and p < 0.001, respectively). However, the group conditioned with 18% EDTA did not present significant differences compared to the group conditioned with 35% H3PO4 (p = 0.997). In addition, the group conditioned with 18% EDTA plus 35% H3PO4 showed significantly higher adhesive strength compared to the groups conditioned with 18% EDTA (p = 0.002) and 35% H3PO4 (p = 0.001). Conclusion: The adhesion of bulk fill resin composite to dentin was favorable when preconditioning was performed using 18% EDTA followed by 35% H3PO4. In contrast, when both etchants were used separately, the bulk fill resin composite showed similar bond strength values in both cases, but significantly lower compared to their sequential application.
  • Variability of Sugars Concentrations in Infant Follow-on Formulas with Higher Consumption in Peru: A Preliminary Study

    Munives-Marcos, Angélica K.; Arauzo-Sinchez, Carlos J.; Cupé-Araujo, Ana C.; Ladera-Castañeda, Marysela I.; Cervantes-Ganoza, Luis A.; Cayo-Rojas, César F. (Jaypee Brothers Medical Publishers (P) Ltd, 2023-03-01)
    Aim: The aim of the present preliminary study was to determine sugar concentration in infant follow-on formulas most widely consumed in Peru. Materials and methods: In this descriptive and observational study, the sample was represented by five brands of infant follow-on formulas most consumed in Peru (A, Similac 2; B, Enfamil 2®; C, NAN 2®; D, Baby Lac Pro 2®; and E, Lacti Kids Premium 2®); with two samples of each, collected at two different locations in the Peruvian capital. Subsequently, the concentration of total and individual sugars (lactose, sucrose, glucose, fructose, and maltose) was determined using the high-performance liquid chromatography (HPLC) method in a specialized laboratory. For the comparison of means, Welch’s robust analysis of variance (ANOVA) test for equality of means and Tukey’s post hoc test were used. The significance level was p < 0.05. Results: The total sugars concentration per 100 gm of the five infant follow-on formulas showed a mean of 38.9 ± 11.03 gm, being Similac 2, the infant follow-on formula, with the highest concentration of 50.33 ± 0.11 gm and Enfamil 2, the lowest with 22.75 ± 0.06 gm. The average sugars recorded in the laboratory were compared with those on the product label for Similac 2 (50.3 and 53.1 gr), NAN 2 (46.5 and 51.5 gr), Baby Lac Pro 2 (41.5 and 57.0 gr), Lacti Kids Premium 2 (33.3 and 57.0 gr) and Enfamil 2 (22.8 and 56.0 gr). Furthermore, when comparing the infant follow-on formulas, significant differences were observed between all sugar concentrations (p < 0.001), with the follow-on formula with the significantly higher sugar concentration being Similac 2 (p < 0.001) and the one with the significantly lower concentration being Enfamil 2 (p < 0.001). Regarding individual sugars, per 100 gm analyzed, fructose and maltose registered values
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  • Evaluation of Attitudes and Perceptions in Students about the Use of Artificial Intelligence in Dentistry

    Karan-Romero, Milan; Salazar-Gamarra, Rodrigo Ernesto; Leon-Rios, Ximena Alejandra (MDPI, 2023-05-01)
    Background: The implementation of artificial intelligence brings with it a great change in health care, however, there is a discrepancy about the perceptions and attitudes that dental students present towards these new technologies. Methods: The study design was observational, descriptive, and cross-sectional. A total of 200 dental students who met the inclusion criteria were surveyed online. For the qualitative variables, descriptive statistical measures were obtained, such as absolute and relative frequencies. For the comparison of the main variables with the type of educational institution, sex and level of education, the chi-square test or Fisher′s exact test was used according to the established assumptions with a level of statistical significance of p < 0.05 and a confidence level of 95%. Results: The results indicated that 86% of the students surveyed agreed that artificial intelligence will lead to great advances in dentistry. However, 45% of the participants disagreed that artificial intelligence would replace dentists in the future. In addition, the respondents agreed that the use of artificial intelligence should be part of undergraduate and postgraduate studies with 67% and 72% agreement rates respectively. Conclusion: The attitudes and perceptions of the students indicate that 86% agreed that artificial intelligence will lead to great advances in dentistry. This suggests a bright future for the relationship between dentists and artificial intelligence.
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  • Effect of collagen sponge and flowable resin composite on pain management after free gingival graft harvesting: A randomized controlled clinical trial

    Meza-Mauricio, Jonathan; Mourão, Elisa Ribeiro Sá Tscherbakowski; Oliveira Marinho, Kelson; Vergara-Buenaventura, Andrea; Mendoza-Azpur, Gerardo; Muniz, Francisco Wilker Mustafa Gomes; Santamaria, Mauro Pedrine; Faveri, Marcelo (John Wiley and Sons Inc, 2023-06-01)
    The aim of this study was to compare the effect of the application of a flowable resin composite coating, over a collagen sponge stabilized with suture, on postoperative pain after free gingival graft harvesting. Thirty-two free gingival grafts were harvested from the palate in 32 patients, who were subsequently randomized to have only a collagen sponge stabilized with sutures applied to the palatal wound (control), or to have the collagen sponge coated with a flowable resin composite (test). Patients were observed for 14 days, and the pain level was evaluated by using a numerical rating scale. The consumption of analgesics during the postoperative period and the characteristic of the graft were also analyzed. The patients in the test group reported having experienced significantly less pain statistically than the patients in the control group throughout the study. The consumption of analgesics was lower in the test group. The dimensions of harvested grafts in the control and test groups showed no significant differences in height, width, and thickness. In conclusion, the addition of flowable resin composite coating to the hemostatic collagen sponge on the palatal wound following free gingival graft harvesting helped to minimize postoperative pain.
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  • Surface Microhardness of Bulk-Fill Resin Composites Handled With Gloves

    Berto-Inga, Julissa; Santander-Rengifo, Flor; Ladera-Castañeda, Marysela; López-Gurreonero, Carlos; Castro Pérez-Vargas, Antonieta; Cornejo-Pinto, Alberto; Cervantes-Ganoza, Luis; Cayo-Rojas, César (Elsevier Inc., 2023-08-01)
    Aim: It has been reported that resin composites may experience alterations in their mechanical properties when they come into contact with glove powder. Therefore, the present study aimed to compare the surface microhardness of 3 bulk-fill resin composites handled with latex and nitrile gloves prior to light curing. Methods: This in vitro experimental study consisted of 90 resin composite specimens with a 6-mm diameter and a 4-mm height divided equally and randomly into 9 groups. Prior to light curing, the resin composites were handled with latex gloves, nitrile gloves, or only a spatula (control). Subsequently, the surface microhardness was measured with an Electronic Vickers Hardness Tester. The Kruskal–Wallis nonparametric H test with Bonferroni correction was used for comparisons. A significance level of 5% (P < .05) was considered. Results: When comparing surface microhardness of each resin composite according to type of handling received, significant differences were observed in Filtek One Bulk Fill (P < .001) and Opus Bulk Fill (P < .001). In addition, these resin composites presented significantly higher surface microhardness than Tetric N-Ceram Bulk Fill resin (P < .05) when handled with latex gloves, nitrile gloves, and only a spatula. Finally, Filtek Bulk Fill resin presented significantly higher surface microhardness compared to Opus Bulk Fill resin when handled with nitrile gloves (P = .038) and a spatula only (P = .033). Conclusions: The surface microhardness of Filtek One Bulk Fill and Opus Bulk Fill resin composites decreased significantly when handled with latex or nitrile gloves, showing no variation in Tetric N-Ceram Bulk Fill resin composite. In addition, Filtek One Bulk Fill resin composite showed significantly higher surface microhardness than Opus Bulk Fill and Tetric N-Ceram Bulk Fill resin composites when handled with nitrile gloves. It is recommended that bulk-fill resin composites be handled with a spatula, because the use of latex or nitrile gloves could adversely affect their clinical performance.
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  • Association between Self-perceptions of Periodontal Health and Electronic Cigarette use in Young Adults

    Miguras, Maite; Leon-Rios, Ximena Alejandra (Bentham Science Publishers, 2023-01-01)
    Background: The present study aimed to determine the association between self-perceptions of periodontal health and electronic cigarette use. Material and Methods: The study used an observational, analytical and cross-sectional design. 189 young adults aged 18 to 29 from the Metropolitan area of Lima, Peru, were recruited. In order to evaluate self-reported periodontal health, a questionnaire conceived by Quiroz et al. (2017) was used. This includes 13 questions divided into two dimensions (habits and self-perceived periodontal health). Poisson regression with robust variance was used to examine associations between qualitative variables and calculate raw and adjusted prevalence ratios. Results: 59.46% of participants using electronic cigarettes were found to have a poor perception of gum health. Statistically significant associations were produced between poor perceptions of gum health and vaping, regarding both raw data (PR=0.81; 95% CI: 0.69-0.95; p=0.011) and data adjusted to consider covariates (PR=0.82; 95% CI: 0.69-0.97; p=0.021). No associations were observed for the dimensions of bleeding during brushing, reddish, and/or swollen gums. Conclusion: A relationship was found between poor perceptions of gum health and electronic cigarette use.
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  • Estudio de la anatomía de raíces y conductos radiculares en segundas molares permanentes mandibulares, mediante tomografía computadorizada de haz cónico en población peruana

    Granda M, Germán; Caballero G, Stefany; Agurto H, Andrés (Universidad Latina de Costa Rica, Facultad de Odontología, 2017)
    El presente estudio descriptivo tuvo como objetivo evaluar la anatomía de raíces y conductos radiculares en segundas molares permanentes mandibulares, mediante tomografía computarizada de haz cónico, para lo cual se analizaron 400 tomografías. Los resultados mostraron mayor prevalencia de dos raíces y tres conductos en las piezas. En cuanto a la configuración de los conductos, se halló predominancia del Tipo II y Tipo I en la raíz mesial y distal, respectivamente. Por último, se encontró gran prevalencia de conductos en forma de C, y el tipo c3 fue el más hallado.
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  • Asociación de conocimientos y actitudes sobre accidentes ocupacionales en prácticas clínicas de alumnos de odontología

    Medina Crispin, Clara Victoria; León Ríos, Ximena Alejandra; Caballero García, Carmen Stefany; Díaz Del Olmo Morey, Carlos Enrique (Colegio Mayor de Nuestra Senora del Rosario, 2022-09-06)
    Introducción: el uso constante de material punzocortante e instrumental rotatorio y la flora bacteriana de la cavidad oral del paciente representan un peligro latente de contagio en los estudiantes de odontología. El objetivo del estudio fue determinar la asociación entre los conocimientos y las actitudes sobre accidentes ocupacionales en prácticas clínicas de alumnos de odontología de una clínica universitaria de Lima (Perú). Materiales y métodos: estudio observacional, analítico de asociación y transversal. El universo incluyó 156 alumnos. Los conocimientos y las actitudes se evaluaron mediante una encuesta adaptada de 24 preguntas, previa validación interna por juicio de expertos. Se calcularon proporciones para las variables cualitativas y medidas de tendencia central (mediana) para la variable edad. De la misma manera, se usaron la prueba de chi-cuadrado para comparar las variables cualitativas y la prueba U de Mann-Whitney para comparar las variables cualitativas con la variable cuantitativa edad. Se aceptó una significancia de 0.05. Resultados: el 78.2 % de los participantes tuvo un conocimiento alto frente al manejo de accidentes ocupacionales; de la misma manera, el 72.4 % manifestó una actitud positiva. No se encontró asociación estadísticamente significativa (p > 0.05) entre las variables conocimientos y actitud. Por otro lado, el 69.1 % de los estudiantes sufrió al menos un accidente ocupacional durante sus prácticas clínicas, en su mayoría causado por el explorador (65.1 %). Conclusiones: no se encontró asociación significativa entre las variables conocimiento y actitud; sin embargo, una gran cantidad de estudiantes sufrieron al menos un accidente ocupacional.
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  • Factors Associated with Epidemiological, Preventive and Health Care Knowledge of Dentists from North of the Peruvian Capital about COVID-19: A Cross-Sectional Study under a Predictive Model

    Aquiles-Barzola, Flor; Verástegui-Sandoval, Arturo; Machco-Pasmiño, Heriberto; Córdova-Limaylla, Nancy; Ladera-Castañeda, Marysela; Cervantes-Ganoza, Luis; Cayo-Rojas, César (MDPI, 2023-01-01)
    Aim: In dental practice there is a high risk of contact with fluids that may contain SARS-CoV-2. Salivary secretions in the form of droplets are the main route of infection. The present study aimed to evaluate factors associated with epidemiological, preventive and health care knowledge of dentists from the north of the Peruvian capital about COVID-19. Materials and Methods: This analytical, observational, cross-sectional and prospective study evaluated 142 dental professionals from the Directorate of Integrated Health Networks (DIRIS) in the north of the Peruvian capital during June to August 2022. A validated questionnaire of 20 closed multiple-choice questions was used to measure the level of epidemiological, preventive and health care knowledge about COVID-19. A logit model was used to evaluate the influence of the following variables: age, sex, marital status, children, origin, university of origin, academic degree, work modality, work status and number of training courses. In addition, a predictive model was constructed with the causal variables considering a significance level of p < 0.05. Results: Epidemiological, preventive and health care knowledge about COVID-19 was fair in 17.6%, 34.5% and 57.7%, respectively. Likewise, all the variables analyzed were influential factors. It was observed that being single (OR = 0.05, CI: 0.01–0.26), having studied at a private university (OR = 0.09, CI: 0.023–0.38) and having received four to six trainings on COVID-19 related topics (OR = 0.02, CI: 0.002–0.238) were protective factors against fair knowledge. Conclusions: More than half of the dentists surveyed had fair knowledge about COVID-19. The factors that favored a good level of overall knowledge were: being single, having studied at a private university and having received 4 to 6 training courses on COVID-19-related topics. It is advisable that the competent authorities continue to educate dental professionals with training programs about infection control practices in accordance with the health care work they perform in their specialty. It will also be of utmost importance for the professional to be updated with reliable information accredited by the Centers for Disease Control and Prevention as well as the WHO.
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  • Effect of 16% Carbamide Peroxide and Activated-Charcoal-Based Whitening Toothpaste on Enamel Surface Roughness in Bovine Teeth: An In Vitro Study

    Zamudio-Santiago, Jorge; Ladera-Castañeda, Marysela; Santander-Rengifo, Flor; López-Gurreonero, Carlos; Cornejo-Pinto, Alberto; Echavarría-Gálvez, Ali; Cervantes-Ganoza, Luis; Cayo-Rojas, César (MDPI, 2023-01-01)
    Background: Activated charcoal is a nanocrystalline form of carbon with a large specific surface area and high porosity in the nanometer range, having consequently the capacity to absorb pigments, chromophores, and stains responsible for tooth color change, while carbamide peroxide is unstable and breaks down immediately upon contact with tissue and saliva, first dissociating into hydrogen peroxide and urea and subsequently into oxygen, water, and carbon dioxide. Therefore, the aim of the present study was to assess the effect of 16% carbamide peroxide and activated-charcoal-based whitening toothpaste on enamel surface roughness in bovine teeth. Materials and Methods: The present experimental in vitro, longitudinal, and prospective study consisted of 60 teeth randomly distributed in six groups: A: artificial saliva, B: conventional toothpaste (Colgate Maximum Protection), C: whitening toothpaste with activated charcoal (Oral-B 3D White Mineral Clear), D: 16% carbamide peroxide (Whiteness Perfect 16%), E: 16% carbamide peroxide plus conventional toothpaste (Whiteness Perfect 16% plus Colgate Maximum Protection), and F: 16% carbamide peroxide plus whitening toothpaste with activated charcoal (Whiteness Perfect 16% plus Oral-B 3D White Mineral Clear). Surface roughness was assessed with a digital roughness meter before and after each treatment. For the statistical analysis, Student’s t test for related samples was used, in addition to the ANOVA test for one intergroup factor, considering a significance level of p < 0.05. Results: The surface roughness variation of bovine tooth enamel, before and after application of bleaching agent, was higher in groups of whitening toothpaste with activated charcoal (0.200 µm, Confidence Interval (CI): 0.105; 0.296 µm) and 16% carbamide peroxide plus whitening toothpaste with activated charcoal (0.201 µm, (CI): 0.092; 0.309 µm). In addition, bovine teeth treated with conventional toothpaste (p = 0.041), whitening toothpaste with activated charcoal (p = 0.001), and 16% carbamide peroxide plus whitening toothpaste with activated charcoal (p = 0.002) significantly increased their surface roughness values. On the other hand, significant differences were observed when comparing the variation in surface roughness between the application of artificial saliva (control) and the whitening toothpaste with activated charcoal (p = 0.031), and the 16% carbamide peroxide plus whitening toothpaste with activated charcoal (p = 0.030). Conclusion: The use of whitening toothpaste with activated charcoal and in combination with 16% carbamide peroxide significantly increased enamel surface roughness in bovine teeth.
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  • Estiramiento pasivo como opción terapéutica en paciente con hipomovilidad mandibular crónica

    Montejo Quiroz, Milagros; Noriega Castañeda, Jorge; Bardalez Daza, Rogger (Universidad Nacional Mayor de San Marcos, Vicerectorado de Investigacion, 2020-07-08)
    Los trastornos mandibulares son alteraciones asociadas al dolor y disfunción de la arti- culación temporomandibular (ATM), a los músculos de la masticación, a la limitación del movimiento mandibular y a la presencia de un clic articular. Entre estos trastornos se puede encontrar la hipomovilidad mandibular la cual se caracteriza por la incapacidad del paciente de abrir la boca con una amplitud normal. La hipomovilidad asociada a la contractura muscular tiene como tratamiento de primera opción el estiramiento pasivo, en esta técnica el paciente tiene que abrir la boca hasta el límite máximo, este movimiento debe ser realizado durante 5 o 6 veces al día. Este reporte de caso describe una paciente de 46 años de edad con hipomovilidad mandibular por contractura muscular, se describe la sintomatología, la evaluación clínica y el tratamiento propuesto. La evolución fue favorable; en un seguimiento de 5 semanas se logró el objetivo propuesto.
    Acceso abierto
  • Exactitud del diagnóstico de lesiones cariosas de dos Sistemas de adquisición de imagen digital

    Montejo-Quirós, Milagros; Agurto-Huerta, Andrés (Universidad Latina de Costa Rica, Facultad de Odontología, 2018-06)
    Objetivo: Determinar la exactitud en el diagnóstico de lesiones cariosas interproximales y oclusales de dos sistemas digitales: Dispositivo de carga acoplada (CCD) y Placa de fósforo fotoestimulado (PSP), tomando como patrón de oro a la evaluación histológica. Métodos: Se evaluaron 207 superficies dentarias, empleando dos sistemas digitales: CCD (Planmeca ProSensor® HD) y PSP (VistaScan mini Easy Dürr Dental). La real profundidad de la lesión cariosa fue determinada por la evaluación histológica, mediante el Microscopio Dinolite. La exactitud se determinó mediante las propiedades diagnósticas de sensibilidad, especificidad, valor predictivo positivo y valor predictivo negativo. Resultados: La evaluación histológica encontró 62 piezas dentarias con lesión cariosa en la superficie oclusal, 38 en mesial y 33 en distal. La sensibilidad en oclusal fue de 95,15% para ambos sistemas, en mesial de 78,95% para el CCD y 63,16% para el PSP, en distal fue de 75,76% para el CCD y 78,79% el PSP. Las especificidades encontradas oscilaron entre 90-100% para ambos sistemas Conclusión: La exactitud diagnóstica de los sistemas digitales CCD y PSP fueron similares en la detección de lesiones cariosas oclusales e interproximales. Se concluye que la modalidad de la imagen no un factor que altere el resultado del diagnóstico.
    Acceso abierto
  • Factors associated with knowledge about pharmacological management of pregnant women in Peruvian dental students: a logistic regression analysis

    Flores-Montalvo, Elizabeth; Córdova-Limaylla, Nancy; Ladera-Castañeda, Marysela; López-Gurreonero, Carlos; Echavarría-Gálvez, Alí; Cornejo-Pinto, Alberto; Cervantes-Ganoza, Luis; Cayo-Rojas, César (BioMed Central Ltd, 2023-12-01)
    Background: Clinical management to maintain or restore oral health through the use of drugs during pregnancy is crucial, since at this stage physiological changes significantly influence the absorption, distribution and elimination of the drug, considering also that excessive administration of drugs during this period may have adverse effects on the mother and/or fetus. Therefore, the aim of the present study was to evaluate the factors associated with knowledge of pharmacological management of pregnant women in dental students of a Peruvian university located in the capital and province. Methods: This analytical, cross-sectional, prospective and observational study assessed 312 Peruvian dental students from third to fifth year of study between February and April 2022. A validated questionnaire of 10 closed questions was used to measure knowledge about pharmacological management in pregnant women. A logit model was used to assess the influence of the variables: gender, age, year of study, marital status, place of origin and area of residence. A significance of p < 0.05 was considered. Results: The 25.96, 55.13 and 18.91% of the dental students showed poor, fair and good knowledge about pharmacological management in pregnant women; respectively. In addition, it was observed that students under 24 years of age and those from the capital were significantly (p < 0.05) 44% less likely to have poor knowledge of pharmacological management in pregnant women compared to those aged 24 years or older (OR = 0.56; CI: 0.34–0.92) and those from the province (OR = 0.56; CI: 0.32–0.98); respectively. Finally, those in their third and fourth year of study were significantly three times more likely to have poor knowledge (OR = 3.17; CI: 1.68–5.97 and OR = 3.88; CI: 2.07–7.31; respectively) compared to fifth year dental students. Conclusion: The knowledge of dental students about pharmacological management in pregnant women was predominantly of fair level. In addition, it was observed that being under 24 years of age and being from the capital city were protective factors against poor knowledge, while being a third- and fourth-year student was a risk factor. Finally, gender, marital status and area of residence were not influential factors in the level of knowledge.
    Acceso abierto

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