20 years of alveolar distraction : a systematic review of the literature

The Vertical Alveolar Distraction Osteogenesis (VADO) technique is an excellent solution for bone and soft tissue neoformation in areas in which there has been significant bone atrophy that hinders normal rehabilitation using dental implants. The goal of this systematic review is to analyze the most relevant articles published on VADO in the literature over the past 20 years. The review was performed by using the keywords: ?alveolar ridge?, ?distraction ostegenesis? and ?dental implant?. This search produced a total result of 240 articles. The clinical studies and cases reported in humans amounted to 113 articles, 18 articles referred to studies developed on animals and 33 review articles. The presentation of this systematic analysis follows the criteria described in the PRISMA declaration. 22 articles complied with the inclusion criteria and 7 articles more were added manually, reaching a total sample of 29 studies. Following the analysis of the studies, they were classified into 18 high-quality, 10 mediumquality and 1 low-quality study. Only 4 studies achieved a maximum score of 9 (according to NewCastle Ottawa Scale, NOS). VADO is a technique with greater potential in vertical gain. The performance of dental implants has a success and survival rate similar to dental implants placed on bones that are not subject to increase techniques

Survival study of leukoplakia malignant transformation in a region of northern Spain

Oral leukoplakia is the most common potentially malignant disorder (PMD) of the oral cavity. The objectives of this study are to determine the clinicopathologic features in a group of patients with oral leukoplakia of Northern Spain (Galicia), determining the factors associated to clinical risk and analyzing the malignant transformation of these patients. We included 85 patients. We recorded sex and age, habits like alcohol and tobacco, size, clinical appearance, site, number of lesions, and presence or absence of dysplasia. We assess the association between risk factors and transformation and developed a logistic regression analysis. Finally we used the Kaplan-Meier and log-rank test for the survival analysis. 7 patients (8.2%) had malignant transformation. The mean follow-up of the patients was 4.13 years versus 5.58 years of those who developed carcinoma. Only location and initial dysplasia have a statistically significant relationship with malignant transformation, but when applied the long rank test only the presence of dysplasia remains statistically significant(P<0,026). Oral Cancer Free Survival was 81.9% (0.150) at 11 years for the group without dysplasia. We found that the presence of dysplasia is the only risk factor that is statistically related to the development of a carcinoma

Perception by teachers of the Faculty of Medicine and Dentistry of the USC on virtualand synchronous teaching after the COVID-19 crisis

La pandemia del Covid-19 ha impulsado cambios en la educación superior mundialmente, exigidos por las medidas de distanciamiento social que impiden cualquier enseñanza presencial. El objetivo de este trabajo es conocer la percepción y uso por los docentes de la Facultad de Medicina y Odontología de la Universidad de Santiago de Compostela (USC) sobre el entorno de aprendizaje virtual (VLE)mediante un estudio transversal basado en encuestas autoaplicadas con Microsoft Forms. Los datos se analizaron estadísticamente mediante el programa SPSS v.24.0.La tasa de respuesta fue del 46.3 %. La muestra estaba formada por 23 hombres(35.5 %) y 40 mujeres (63.5 %). El 50.8 % tiene más de 20 años de experiencia docente. El 49.2 % de los encuestados no utilizaba el campus virtual (CV) antes de la crisis del Covid-19 y el 6.3 % continúa sin usarlo actualmente. Sólo un 6.3 % utilizaba la docencia en remoto síncrona y sólo el 54 % cree es válida para su aplicación a las Ciencias de la Salud. Los no usuarios del CV, mayoritariamente (64.5 %) comienzan a usarlo como mensajería y entrega de material docente, mientras que de los usuarios asiduos un 59.4 % explotan todas sus herramientas (chi2=15.640, V de Cramer=0.498, p=0.001).Los registros de uso del estudio constatan una baja utilización en el entorno docente analizado indicando que la adquisición de capacitación en el uso del campus virtual en la docencia universitaria debería ser promocionada al objeto de incrementar su empleo.The Covid-19 pandemic has promoted changes in higher educationworldwide, demanded by social distancing measures that prevent any face-to-faceteaching. The objective of this work is to analyze the perception and use byprofessors of the Faculty of Medicine and Dentistry of the University of Santiago de Compostela (USC) on the virtual learning environment (VLE) through a cross-sectional study based on self-administered surveys using Microsoft Forms. The datawere statistically analyzed using the SPSS v.24.0 program. The response rate was46.3%. The sample consisted of 23 men (35.5%) and 40 women (63.5%). 50.8% havemore than 20 years of teaching experience. 49.2% of those surveyed did not use thevirtual campus (CV) before the Covid-19 crisis and 6.3% continue not to use it today.Only 6.3% used synchronous remote teaching and only 54% believe it is valid for itsapplication to Health Sciences. Most of the non-users of the CV (64.5%) begin to useit as courier and delivery of teaching material, while regarding regular users, 59.4%exploit all its tools (chi2 = 15.640, Cramer's V = 0.498, p = 0.001). The records ofuse of the study confirm a low use in the analyzed teaching environment, indicatingthat the acquisition of training in the use of the virtual campus in university teachingshould be promoted in order to increase their utilization

Efficacy of different sentinel lymph node biopsy protocols in oral squamous cell carcinoma: systematic review and meta‐analysis

Financiado para publicación en acceso aberto: Universidade de Vigo/CISUGThe sentinel node biopsy (SNB) is highly protocolized in other cancers, however, this is not the case for oral squamous cell carcinoma patients, hence our objective was to evaluate the different protocols published. A specific study protocol was designed and subsequently registered on PROSPERO (Ref. CRD42021279217). Twenty-three articles were included in the meta-analysis. The grouped sensitivity of the SNB was 82% (95% CI: 0.74–0.88), and the grouped specificity was 100% (95% CI: 0.99–1.00). The use of other radiotracers other than pre-operative lopamidol showed higher values of sensitivity of 82.80% (95% CI: 76.90%–87.50%; p < 0.001). The use of the blue dye stain showed higher sensitivity values of 85.60% (95% CI: 71.90%–93.20%), compared to sensitivity values of 77.50% when it was not used (95% CI: 69.10%–84.20%) (p < 0.001). Diagnostic rates are variable and they were significantly better when 99mTc was used in all its variations and accompanied by the blue dye staining