Browsing by Author "Velázquez-Enríquez, Ulises"

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    Lip and Oral Cavity Cancer Incidence and Mortality Rates Associated with Smoking and Chewing Tobacco Use and the Human Development Index in 172 Countries Worldwide: An Ecological Study 2019–2020
    (MDPI, 2023-04-07) Hernández-Morales, Antonio; González-López, Blanca Silvia; Scougall-Vilchis, Rogelio José; Bermeo-Escalona, Josué Roberto; Velázquez-Enríquez, Ulises; Islas-Zarazúa, Rosalina; Márquez-Rodríguez, Sonia; Sosa-Velasco, Taurino Amílcar; Medina-Solís, Carlo Eduardo; Maupomé, Gerardo
    Tobacco use is associated with diseases worldwide, including cancer. This is one of the major public health problems globally, causing more than 19 million new cases in 2020. Lip and oral cavity cancer (LOCC) is neoplastic growth in the tongue, gums, and lips. The objective of this ecological study was to quantify the strength of the association between incidence and mortality of LOCC, with tobacco use and with the Human Development Index (HDI). Incidence and mortality data on LOCC were obtained for 172 countries in 2020, from the Global Cancer Observatory (GLOBOCAN). The prevalence of tobacco smoking and chewing was obtained from reports conducted in 2019. The inequality in human development was estimated using the HDI from the United Nations Development Program, Human Development Report (2019). Statistically significant correlations were observed between the incidence of LOCC and tobacco smoking and chewing prevalence, except for negative correlations between the prevalence of tobacco smoking LOCC mortality in women, just as in the case of the HDI. No statistically significant differences were found between the prevalence of tobacco chewing only and the incidence of LOCC overall and by sex. A higher LOCC incidence overall and by sex was associated with higher HDI. In conclusion, the present study found positive correlations for various HDI socioeconomic indicators and tobacco use with the incidence and mortality of LOCC, but also a few inverse correlations.
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    Remineralizing Effect of Xilitol, Juniperus Communis and Camellia Sinensis Added to a Toothpaste: An In Vitro Study
    (University of Costa Rica, 2018) Jiménez-Gayosso, Sandra I.; Lara-Carrillo, Edith; Scougall-Vilchis, Rogelio J.; Morales-Luckie, Raúl A.; Medina Solís, Carlo E.; Velázquez-Enríquez, Ulises; Maupomé, Gerardo; Herrera-Serna, Brenda
    The aim of this study was to explore the remineralizing effect of toothpastes based on Xilitol, Camellia Sinensis and Juniperus Communis. An in vitro experimental study was carried out in an 18 human premolars sample, which were treated with one of the 3 evaluated toothpastes and a control fluoride one. The atomic percentages of Ca and P were evaluated by Energy Dispersive X-ray Spectroscopy (EDS). In addition, the enamel surface of treated teeth was visualized by Scanning Electron Microscopy (SEM). The evaluations were carried out in three stages: pre-treatment, after an artificial demineralization process and after the treatment with the toothpastes. In the statistical analysis, the one-way ANOVA and Pearson correlation tests were used. Xilitol and Juniperus Communis showed the greatest gain of P ions compared to the control group (p‹0.01). As for Ca, the group treated with xylitol-based toothpaste showed more ion gain compared with the control group (p‹0.01). In the Pearson correlation test between Ca and P, statistically significant correlations were observed in all groups (p‹0.01), ranging between r=0.7413 (Xylitol Group) and r=0.9510 (Control Group). We concluded that Xylitol paste showed the highest remineralizing property, both in the EDS analysis and in the SEM images.