Background: ChatGPT was not intended for use in health care, but it has potential benefits that depend on end-user understanding and acceptability, which is where health care students become crucial. There is still a limited amount of research in this area. Objective: The primary aim of our study was to assess the frequency of ChatGPT use, the perceived level of knowledge, the perceived risks associated with its use, and the ethical issues, as well as attitudes toward the use of ChatGPT in the context of education in the field of health. In addition, we aimed to examine whether there were differences across groups based on demographic variables. The second part of the study aimed to assess the association between the frequency of use, the level of perceived knowledge, the level of risk perception, and the level of perception of ethics as predictive factors for participants’ attitudes toward the use of ChatGPT. Methods: A cross-sectional survey was conducted from May to June 2023 encompassing students of medicine, nursing, dentistry, nutrition, and laboratory science across the Americas. The study used descriptive analysis, chi-square tests, and ANOVA to assess statistical significance across different categories. The study used several ordinal logistic regression models to analyze the impact of predictive factors (frequency of use, perception of knowledge, perception of risk, and ethics perception scores) on attitude as the dependent variable. The models were adjusted for gender, institution type, major, and country. Stata was used to conduct all the analyses. Results: Of 2661 health care students, 42.99% (n=1144) were unaware of ChatGPT. The median score of knowledge was “minimal” (median 2.00, IQR 1.00-3.00). Most respondents (median 2.61, IQR 2.11-3.11) regarded ChatGPT as neither ethical nor unethical. Most participants (median 3.89, IQR 3.44-4.34) “somewhat agreed” that ChatGPT (1) benefits health care settings, (2) provides trustworthy data, (3) is a helpful tool for clinical and educational medical information access, and (4) makes the work easier. In total, 70% (7/10) of people used it for homework. As the perceived knowledge of ChatGPT increased, there was a stronger tendency with regard to having a favorable attitude toward ChatGPT. Higher ethical consideration perception ratings increased the likelihood of considering ChatGPT as a source of trustworthy health care information (odds ratio [OR] 1.620, 95% CI 1.498-1.752), beneficial in medical issues (OR 1.495, 95% CI 1.452-1.539), and useful for medical literature (OR 1.494, 95% CI 1.426-1.564; P<.001 for all results). Conclusions: Over 40% of American health care students (1144/2661, 42.99%) were unaware of ChatGPT despite its extensive use in the health field. Our data revealed the positive attitudes toward ChatGPT and the desire to learn more about it. Medical educators must explore how chatbots may be included in undergraduate health care education programs.

Background: This systematic review and meta-analysis aimed to evaluate the wear of the antagonist tooth in ceramic restorations. Material and methods: This study was carried out based on Preferred Reporting Items for Systematic Review and Meta-analysis (PRISMA) recommendations; it was also registered in PROSPERO (register number: CRD42022316252). Three databases were consulted in the literature search, Embase, Scopus, and Web of Science. The citation searching was conducted by two researchers independently. The clinical studies that evaluated wear in antagonist teeth concerning ceramic restoration were included. Twelve articles were selected after eliminating duplicates ones and applying the inclusion criteria, and two were chosen through citation. Fourteen articles were considered for the qualitative and quantitative analysis (meta-regression and meta-analysis). Results: The mean linear wear of the antagonist tooth in relation to feldspathic was 8.914 μm, for lithium disilicate it was 0.018 μm, and for zirconia it was 0.257 μm. The mean volumetric wear of the antagonist tooth in relation to feldspathic was 0.273 mm³, for hybrid ceramic it was 0.030 mm³, for lithium disilicate it was 0.018 mm³, and for zirconia it was 0.014 mm³. The mean natural tooth wear was 0.7974 μm per month. Tooth wear caused by zirconia at six months was 31.755 μm, at 12 months it was 24.648 μm, and at 24 months it was 20.662 μm. Conclusions: Feldspathic produces greater wear of the antagonist tooth from ceramic restorations linearly and volumetrically. In addition, zirconia generates the least wear that will decrease over time, and it will be equal to or less than the natural wear in the tooth.

Objectives: To analyze the impact of implantoplasty on the mechanical resistance of dental implants, considering different implantoplasty designs and implant types. Methods: A systematic review was conducted in accordance with PRISMA guidelines. A search was performed in four databases: PubMed, Scopus, Web of Science, and Embase, along with a manual search for additional relevant studies. In vitro studies assessing the mechanical resistance of dental implants subjected to implantoplasty were included. A total of 136 studies were identified; after duplicate removal using Rayyan, and screening by title and abstract, 17 studies were ultimately selected after full-text assessment. Results: In vitro studies on external hexagon implants showed that fracture resistance in control groups ranged from 773.1 N to 1660 N for implants with a 4 mm diameter, and from 478.1 N to 1650 N after implantoplasty. For 3.5 mm diameter implants, values ranged from 548.8 N to 1276.1 N in control groups, and from 465.9 N to 1211.7 N after implantoplasty. In internal hexagon connections, fracture resistance after implantoplasty ranged between 321.7 N and 739 N. Conical connections exhibited a broader range of resistance values after implantoplasty, from 315.9 N to 2395.3 N. Conclusions: Implantoplasty reduces the mechanical strength of dental implants. Increased implantoplasty length correlates with decreased resistance, particularly affecting narrow implants. The prosthetic connection most affected by this procedure is the external hexagon, followed by the internal hexagon, with the conical connection being the most resistant.

BACKGROUND ChatGPT was not intended for use in health care, but it has potential benefits that depend on end-user understanding and acceptability, which is where health care students become crucial. There is still a limited amount of research in this area. OBJECTIVE The primary aim of our study was to assess the frequency of ChatGPT use, the perceived level of knowledge, the perceived risks associated with its use, and the ethical issues, as well as attitudes toward the use of ChatGPT in the context of education in the field of health. In addition, we aimed to examine whether there were differences across groups based on demographic variables. The second part of the study aimed to assess the association between the frequency of use, the level of perceived knowledge, the level of risk perception, and the level of perception of ethics as predictive factors for participants’ attitudes toward the use of ChatGPT. METHODS A cross-sectional survey was conducted from May to June 2023 encompassing students of medicine, nursing, dentistry, nutrition, and laboratory science across the Americas. The study used descriptive analysis, chi-square tests, and ANOVA to assess statistical significance across different categories. The study used several ordinal logistic regression models to analyze the impact of predictive factors (frequency of use, perception of knowledge, perception of risk, and ethics perception scores) on attitude as the dependent variable. The models were adjusted for gender, institution type, major, and country. Stata was used to conduct all the analyses. RESULTS Of 2661 health care students, 42.99% (n=1144) were unaware of ChatGPT. The median score of knowledge was “minimal” (median 2.00, IQR 1.00-3.00). Most respondents (median 2.61, IQR 2.11-3.11) regarded ChatGPT as neither ethical nor unethical. Most participants (median 3.89, IQR 3.44-4.34) “somewhat agreed” that ChatGPT (1) benefits health care settings, (2) provides trustworthy data, (3) is a helpful tool for clinical and educational medical information access, and (4) makes the work easier. In total, 70% (7/10) of people used it for homework. As the perceived knowledge of ChatGPT increased, there was a stronger tendency with regard to having a favorable attitude toward ChatGPT. Higher ethical consideration perception ratings increased the likelihood of considering ChatGPT as a source of trustworthy health care information (odds ratio [OR] 1.620, 95% CI 1.498-1.752), beneficial in medical issues (OR 1.495, 95% CI 1.452-1.539), and useful for medical literature (OR 1.494, 95% CI 1.426-1.564; P<.001 for all results). CONCLUSIONS Over 40% of American health care students (1144/2661, 42.99%) were unaware of ChatGPT despite its extensive use in the health field. Our data revealed the positive attitudes toward ChatGPT and the desire to learn more about it. Medical educators must explore how chatbots may be included in undergraduate health care education programs.

Introducción. Se realizó una revisión sistemática sobre el uso de los escáneres intraorales en odontología recopilando información acerca de la precisión de distintas marcas dentro del mercado, conociendo sus ventajas y desventajas, de igual se analizó la aceptación clínica de los profesionales al compararlos con las impresiones convencionales, además se estudió la aplicación del flujo digital aplicado en las distintas ramas de la odontología. Objetivo. El objetivo de esta investigación fue realizar una revisión sobre la precisión de los escáneres intraorales en odontología, comparando escáneres de diferentes casas comerciales conociendo sus ventajas y desventajas, de igual manera conocer la aceptación clínica de los profesionales al utilizar los mismos comparado con el uso de impresiones convencionales y el flujo digital aplicado en las distintas ramas de la odontología, estas con el objetivo de mejorar la toma de impresión para las preparaciones dentales generando un proceso más efectivo y preciso que las impresiones convencionales. Metodología. Se efectuó una revisión sistemática, basados en la metodología PRISMA, se redactó una pregunta en función de la técnica PICO, se realizó la búsqueda hasta Septiembre del 2023 en las bases de datos: Pubmed, Embase, Scopus y Web of Science, no se aplicaron filtros de fecha o lenguaje, se extrajeron la siguiente información: autor y año, revista, tipo de estudio, criterios de inclusión, criterios de exclusión, tipo de muestra, edad, sexo, tipo de material, tipo de software, tipo de escáner intraoral y metodología. Resultados. La aplicación de los escáneres intraorales al ser utilizados en modelos impresos demostró una precisión clínicamente aceptable en comparación con las mediciones realizadas con un calibrador en modelos de yeso con impresiones convencionales, sin embargo, el método de medición podría afectar a la reproducibilidad de las mediciones. Conclusión. Es importante establecer una comparación con los sistemas convencionales que han sido utilizados y conocidos por todos los odontólogos, comparando así el flujo digital y la aplicación de este en las distintas áreas como una herramienta en la cual nos podremos apoyar para brindar un mejor servicio a nuestros pacientes. Área de estudio general: odontología. Área de estudio específica: odontología digital. Tipo de estudio: Artículos originales.

Introducción. La elevación de margen profundo (DME) es una alternativa menos invasiva que el alargamiento coronario y la extrusión ortodóntica, ofreciendo menor de costo y tiempo clínico. Implica elevar el margen de cavidades subgingivales para mantener la salud periodontal y prevenir la acumulación de bacterias. Considerar una distancia mínima de 3 milímetros entre la cavidad y la cresta ósea. La elección del material y el sistema adhesivo juega un papel importante en la adaptación marginal. Los compuestos de resina fluida se destacan en la adaptación marginal, aunque no son adecuados para cargas termomecánica, lo que sugiere por compuestos precalentados. Objetivo. Analizar la integridad marginal y el estado periodontal de los materiales utilizados para DME. Metodología. Este estudio es una revisión sistemática que sigue las normas de PRISMA. Se realizaron búsquedas exhaustivas en múltiples bases de datos hasta julio de 2023 y se aplicaron criterios de inclusión que se centraron en estudios que incorporaron la técnica DME. Se identificaron 692 artículos, de los cuales 23 cumplieron con los criterios de inclusión y fueron analizados en detalle. Resultados. Abordar lesiones de caries proximales subgingivales con DME para mejorar la adaptación y la salud periodontal de los tejidos circundantes. Se discuten diversos materiales utilizados para la DME, pero persiste la falta de consenso sobre la elección del material y la técnica. Se observa una controversia en estudios que evalúan la influencia de la DME en la adaptación marginal. Además, la importancia de mantener una distancia adecuada entre el margen de la restauración y la cresta ósea para la salud periodontal. Conclusión. La DME muestra una buena adaptación en condiciones de laboratorio y puede ser útil en situaciones de acceso limitado bajo las encías. La reacción de los tejidos periodontales al DME aún no está clara, por lo tanto, el impacto del DME sobre el periodonto sigue sin ser concluyente. Área de estudio general: Odontología. Área de estudio específica: Odontología Restaurativa. Tipo de estudio: Revisión Sistemática.