bluuebunny/crossref_metadata_2025 huggingface dataset:
2D of Robotic Arm Based on Inverse Kinematics Using Arduino
Authors: Reddy Mr. B. Sreekanth , Apurva Pantham , Pulla Gayathri , Sathwika Udutha , Perupangu Manisha
Published: November 2023

Abstract: The advancements and quick developments in the technology has made it possible to create a platform for the invention of new as well as great things. One of the concept that is being used lately to improve the technology is the concept of robotics. This project focuses on the implementation of inverse kinematics for a 2-DOF (two degrees of freedom) robot arm using an Arduino microcontroller. The inverse kinematics equations are derived and programmed to calculate the joint angles required to position the robot arm's end effector in a desired location within its workspace. The Arduino board is used to interface with the robot arm's actuators and control the movement of the arm. The Arduino programming aspect of the project involves developing a control algorithm that accepts target coordinates for the end effector and computes the necessary joint angles using inverse kinematics equations. Servo motors are manipulated through the Arduino Servo library to achieve the calculated angles, enabling the arm to reach the desired positions accurately and efficiently. To enhance the functionality and safety of the 2-DOF robotic arm, the project includes features such as calibration routines, testing procedures, and safety measures to avoid collisions and servo load. The project aims to demonstrate the application of inverse kinematics in controlling robotic manipulators for precise positioning tasks
Speech Recognition and Sending Alert Message If Abusive Words are Detected
Authors: Namose Prof. M.S. , Patil Harshal , Patil Mahesh , Sapate Dipak , Vaishnav Dinesh
Published: November 2023

Abstract: This paper introduces an innovative approach to bolstering the field of speech recognition. Speech recognition, a pivotal process in facilitating computer systems' understanding and response to natural language commands, has garnered considerable importance in today's digital landscape. Our novel method aims to enable users to issue voice commands with enhanced accuracy and efficiency. This approach encompasses several critical steps: the intake of a single audio input, effective noise reduction, and the utilization of pattern matching for audio recognition. To fortify the system's robustness, we've integrated an error tolerance mechanism capable of accommodating human errors and mitigating environmental noise.What sets our method apart is its ability to circumvent the need for storing extensive audio data for matching, leading to a substantial reduction in both space and time complexity when compared to conventional systems. In our experiments, we have exclusively employed a database containing an array of predefined voice patterns, effectively eliminating the necessity for end-user training.
Achieving Excellence: A Guide to Identifying Suitable Materials for Building Structures
Authors: Patel Rutvij
Published: November 2023

Abstract: The materials that make up a building's construction are crucial. Strength of the building, cost, durability, construction time, and other aspects are all impacted. That is why it is imperative that everybody working in this industry understands this. Every time you work on a project, you have the option to select the kind of materials you use. The price of the materials will vary, partly due to the product's quality. Cheaper ones could be of less quality, while more expensive ones are probably going to endure longer. Those who want to save money sometimes use the less expensive materials. Using subpar materials could lead to several issues, even if it might seem like a smart idea now. Here are some problems that may arise from using subpar materials. This essay discusses a variety of topics, including the history of materials, their impact on construction, and building materials
Traffic Sign Classification Using ASIC
Authors: Kishore G. Krishna , Shivarani A. , Priyanka M. , Madhavi P. , Sandhya B.
Published: November 2023

Abstract: The main aim of this project is to focus on traffic signs classification using Tensor flow and deploying the model onto an ASIC for engineering applications. The classification is done using Convolutional Neural Networks (CNNs) in TensorFlow, where the model is trained using a large dataset of traffic sign images. The training images are pre-processed and labelled, and the model is fine-tuned using transfer learning techniques. After the model is trained, it is tested with a separate dataset to ensure its accuracy. Once the model is finalized, it is optimized for deployment onto an ASIC using Micro Python. The ASIC is a custom-designed hardware that is optimized for the specific task of traffic sign classification. The performance of the ASIC is then compared with a standard computer to evaluate its speed and efficiency. This project demonstrates the ability to implement machine learning algorithms onto custom-designed hardware for specific engineering applications, specifically for the purpose of traffic sign classification.
Detection of Lane and Speed Breaker Warning System for Autonomous Vehicles Using Machine Learning Algorithm
Authors: Yadav Prof. J. H. , Chavan V. G. , Dange B. K. , Ghewade N. V. , Gawad O. N.
Published: November 2023

Abstract: Road safety holds immense significance in today's world of transportation, primarily focusing on making roads safer to minimize the chances of accidents and injuries. Road safety revolves around creating and maintaining the road infrastructure. Our System enables vehicles to identify and slow down when approaching road bumps or speed breakers, and potholes. It utilizes cameras and sensors to help drivers stay within their designated lanes keeps an eye on lane markings and provides alerts if the vehicle begins to steer out of its lane, promoting safer and more reliable driving experiences. In high-risk areas or near accidentprone intersections, lane detection technology can trigger speed reduction measures such as illuminated signs and flashing lights when vehicles are not within their lanes. The integration of Natural Language processing (NLP), Computer Vision, Machine learning, and Deep learning can create a comprehensive approach to reducing accidents and improving overall road safety.
Floating Bridges: A Comprehensive Historical Review
Authors: Pal Arko , Sood Dr. Hemant
Published: November 2023

Abstract: Floating bridges, emerging as an ingenious response to geographical impediments, utilize the principle of water's buoyancy to create sustainable and environmentally conscious transportation networks. This comprehensive review explores the rich history, innovative design principles, and intricate structural analysis of floating bridges. Emphasizing their versatility, the paper sheds light on their ability to bridge communities across varied geographical and environmental contexts. Economically, the modular construction of floating bridges not only ensures resource efficiency but also offers a competitive edge in terms of reduced costs and expedited project timelines. A series of case studies are presented, corroborating their economic benefits and the ripple effects on regional economies. Beyond the mere architectural and economic implications, this research underscores the environmental stewardship intrinsic to floating bridges. By curtailing the environmental upheavals often associated with traditional bridge construction, they stand as guardians of aquatic habitats and ecosystems. Further enhancing their sustainability quotient, the paper delves into the potential integration of renewable energy solutions—such as harnessing water currents or solar power—to further diminish the carbon footprint of these structures, thereby making them a beacon for future infrastructure endeavors.
Facelink Attendance: Seamless Campus Check-In
Authors: Chhaparia Siddharth , Bhandekar Ketan , Goriya Mohammad Faraz , Gunjan Dr. Reena
Published: November 2023

Abstract: This visionary project strives to bring about a paradigm shift in classroom management by pioneering a facial recognition-based attendance system. This innovative and cutting-edge solution is poised to not only optimize educational efficiency but also elevate the role of educators by automating the mundane task of attendance taking. By alleviating teachers of this administrative chore, they can channel their valuable time and resources towards the fundamental pursuit of education - moulding the next generation. The system harnesses the power of state-of-the-art facial recognition technology to seamlessly integrate and simplify administrative operations, thus revolutionizing the landscape of classroom management. With unwavering commitment, the ultimate aspiration of this endeavour is to enhance the educational journey for educators and students alike, fostering a more dynamic, productive, and immersive learning environment.
Optimizing Precision: Brain Tumor Detection
Authors: Rai Prof. Neha , Supekar Parth V. , Shaikh Sadek S. , Sawant Sahil S. , Shinde Aditya V.
Published: November 2023

Abstract: In this study, we introduce a method for brain tumor detection that uses CNNs, specifically VGG16 and ResNet50, along with genetic algorithms for model optimization. Integrating advanced deep learning and evolutionary techniques improves the accuracy and efficiency of brain tumor identification in medical images. Experimental results confirm the effectiveness of this method and demonstrate its potential to improve medical diagnosis. In this study, we use genetic algorithms to fine-tune neural network parameters to overcome convergence problems and avoid local minima in high-dimensional spaces. This study promises more accurate and timely identification of brain tumors in medicine by combining AI and medical imaging for future advances. Keywords: CNN, genetic algorithm, VGG16, ResNet50.
AI-based Optimization of Tensile Strength of the Cement Concrete Incorporating Recycled Mixed Plastic Fine used in Road Construction
Authors: Nehra Rahul , Kaur Kamalpreet
Published: November 2023

Abstract: One of the main problems in materials science and engineering is predicting the tensile strength of materials. In this study, we investigate how to model and forecast tensile strength (Tensile Strength in Mpa) based on different material attributes using Support Vector Regression (SVR) using Linear and Polynomial Kernels. The dataset includes the following details: plastic type, fine aggregate ratio, water/cement ratio, cement content, and associated tensile strength values. This work has two main goals: (1) to assess the predictive power of SVR models with various kernel functions and (2) to examine the significance of unique material attributes for prediction. To simulate the link between the input features and tensile strength, we used SVR in conjunction with a Linear Kernel. The final model included insightful information on how each feature affected the forecast. Our results show that the Polynomial Kernel SVR model may better reflect the complex interactions among the material attributes than the Linear Kernel SVR model, despite being more interpretable. Better prediction performance was offered by the Polynomial Kernel SVR, which also revealed the non-linear dependencies in the data.
Women Safety Device with Shock Taser and Location Tracking
Authors: Harshitha V. , Manusha S. , Soumya P. , Dharani K.
Published: November 2023

Abstract: This abstract provides an overview of a Women Safety Device. The safety and security of women continue to be a significant concern in modern society. To address this issue, we present a comprehensive Women Safety Device equipped with a Shock Taser and Location Tracking, implemented using the Arduino Uno microcontroller. The core functionalities of the proposed device include a shock taser for self- defense and a location tracking system to ensure quick response in case of emergencies. The shock taser is designed to deliver a non-lethal electric shock, acting as a deterrent against potential threats. The device utilizes high-voltage, low-current pulses generated by the Arduino Uno to create a safe and effective self-defense mechanism. Furthermore, the location tracking feature utilizes GPS and GSM technologies to continuously monitor the user's real-time position. The Arduino Uno gathers GPS data and transmits it via GSM to the predefined contacts. This allows authorized contacts, such as family members or authorities, to track the user's location and respond promptly to distress situations. By combining a shock taser for self-defense and a real-time location tracking system, this device contributes to a safer environment for women and provides peace of mind for both users and their loved ones.
The Evolution of Personality and Individual Differences
Authors: Price John Scott
Published: November 2023

A review of the book The evolution of personality and individual differences, edited by David M. Buss and Patricia H. Hawley (2011).
A Primal Reaction to Fetid Feet? A Brief Report
Authors: Harrison Marissa A. , McFalls Ashley J.
Published: November 2023

The prevalence of illness—and odor—causing bacteria on human feet may be responsible for an evolved disgust response to feet. Foot aversion was evident in a sample of 110 students, with almost all reporting that feet have a foul odor. Further, most participants perceived feet as “gross,” would mind touching someone else’s feet, and said that they would purposefully avoid a romance with someone with malodorous feet. The adaptive significance of aversion to feet is discussed.
A Textbook About Evolution, for the General Reader?
Authors: McCoy Mark G. , Shackelford Todd K.
Published: November 2023

A review of the book The tangled bank: an introduction to evolution by Carl Zimmer (2010).
Commentary on Steklis and Steklis (2011): Graduate Interdisciplinary Programs for Training Students in Human Behavior, Evolution, and Development
Authors: Salter Frank
Published: November 2023

Commentary on Steklis and Steklis (2011) (https://doi.org/10.22330/001c.89870)
A Vindication of Eibl-Eibesfeldt’s Concept of Tötungshemmungen (Conspecific Killing Inhibitions)? Human Ethology, Military Psychology, and the Neurosciences
Authors: van der Dennen Johan M. G.
Published: November 2023

I present the literature pro and con the concept of ‘killing inhibitions’ in humans and animals as formulated by students of preindustrial warfare such as Turney-High, Quincy Wright, and Keeley; (human) ethologists and primatologists such as Lorenz, Tinbergen, Eibl-Eibesfeldt, Sommer, Vogel, Ghilglieri, and Wrangham; students of contemporary military psychology/psychiatry and combat motivation such as Grossman, Bourke, Gabriel, and Shalit; and neuroscientists such as Koenigs et al. and Miller et al.
Novel Approaches to Enhance Solubility Medicine
Authors: Kumar Yadav Anurag , Pandey Harsh Kumar , Shiven Aditya
Published: November 2023

The solubility enhancement of poorly aqueous soluble drugs presents a significant challenge in pharmaceuticalformulation. Liquisolid technology, also known as powdered solution technology, has emerged as a promising approach toenhance the solubility and bioavailability of such drugs. This paper provides a detailed discussion of the novel approachesemployed within the framework of Liquisolid technology to overcome solubility limitations. The study explores the principles,advantages, and applications of Liquisolid technology in drug formulation, highlighting its potential to revolutionize oralmedication delivery. This research aims to investigate the effectiveness of Liquisolid technology in enhancing drug solubility,elucidate its underlying mechanisms, and evaluate its impact on drug dissolution, bioavailability, and therapeutic outcomes. Theobjectives are to review the background and challenges associated with poor solubility of drugs, introduce the concept ofLiquisolid technology and its principles, discuss the advantages and benefits of Liquisolid technology in solubility enhancement,explore the formulation strategies and key components involved in Liquisolid formulations, evaluate the in vitro and in vivoperformance of Liquisolid systems, and identify future research directions and potential applications of Liquisolid technology inpharmaceutical development. Through this comprehensive analysis, the study aims to provide valuable insights into the novelapproaches based on Liquisolid technology for enhancing drug solubility, facilitating the development of effective and efficientdrug delivery systems. Liquisolid technology, a novel approach to solubility enhancement, offers promising advantages overconventional techniques. It involves solubilizing poorly aqueous soluble drugs using surfactants, then incorporating thesesolubilized drugs into a carrier system or powdered solution. The powdered solution facilitates the conversion of the solubilizeddrug into solid residues, which can be further processed into different dosage forms.
Pharmaceutical Co-Crystallization: Strategies for Co-Crystal Design
Authors: Devi Preeti , Budhwar Vikas , Kakkar Saloni , Kumar Ashwani
Published: November 2023

Pharmaceutical co-crystal belongs to a subtype of crystal in which one component is an active pharmaceutical ingredient (API) and the other is coformer (generally regarded as safe GRAS). In the crystal lattice, the two components are hydrogen-bonded in a fixed stoichiometric ratio. Co-crystallization is a cheap and simple alternative to the presently available techniques of solubility enhancement and has gained much interest from the formulators during the recent few years. Because co-crystals can enhance the physiochemical properties of pharmaceuticals without affecting their therapeutic effect, the area of pharmaceutical co-crystals has reached a tipping point. Besides increasing solubility, some more applications of co-crystals have also been identified to enhance physicochemical properties like permeability, bioavailability, stability, tablet ability, etc. Co-crystals have been extensively studied in the literature, and there is a tremendous amount of literature on co-crystals. However, an exhaustive review of coformer selection and co-crystal regulation must be included. An effort has been made in the review to fill this void. The current study focuses on how co-crystallization can enhance the pharmaceutical characteristics of different drugs, besides giving an overview of the historical background and landmarks in discovering co-crystals. In this review paper, we have discussed the rational design of co-crystals and the selection of conformers for the synthesis of multi-component co-crystals, methods like H-bonding, PKa value, Synthonic engineering, Cambridge structural database, Hansen solubility parameter (HSP), etc as well as the IPR related details all across the world. There is an attempt to include reported works on co-crystals, which helps understand the concept. This review paper discusses pharmaceutical regulatory bodies in the US and Europe released guidelines that are highly useful for pharmaceutical product registration in these regions. Here, we also examine various commercially available pharmaceutical drug products. It also briefly predicts the future perspective of co-crystallization.
Quantitative Assessment of Left Ventricular Myocardial Work in Patients with Different Types of Atrial Fibrillation by Non-invasive Pressure-strain Loop Technique
Authors: Liu Tingting , Liu Hailan , Song Yan , Huang Yulin , zhang chunquan
Published: November 2023

Objective: This study aimed to analyze myocardial work in patients with
atrial fibrillation (AF) using a non-invasive pressure strain loop (PSL)
technique to provide a basis for the quantitative assessment of left
ventricular （LV） systolic function. Methods: LV myocardial
work of 107 AF patients and 55 healthy individuals was assessed by the
non-invasive PSL and then compared. Results: Global
longitudinal strain (GLS) in absolute values, global work index (GWI),
global constructive work (GCW), and global work efficiency (GWE) were
significantly lower in the AF group than control group, whereas peak
strain dispersion (PSD) and global wasted work (GWW) were significantly
higher ( P<0.05). Further subdivision according to the
AF type revealed that, compared with the controls, GLS in absolute
values and GWE decreased significantly; PSD and GWW increased
significantly in the paroxysmal AF group ( P<0.05).
Compared to paroxysmal AF, persistent AF induced a further decrease in
absolute GLS and GWE and a further increase in GWW (
P<0.05) . Multiple linear regression analysis showed
that GWI and GCW were associated with systolic blood pressure. GWW was
associated with types of AF and left atrial volume index (LAVI). GWE was
correlated with age, types of AF, disease duration, and LAVI. Receiver
operating characteristic curve analysis showed that the area under the
curve predicting myocardial injury was higher for GWE and GWW than for
GLS. Conclusions: Non-invasive PSL can quantitatively assess LV
systolic function in patients with different kinds of AF and detect
early subclinical myocardial injury in patients with paroxysmal AF.
Systolic blood pressure, type of AF, LVAI, disease duration, and age may
be associated with myocardial injury in patients with AF.
ON HERMITE-HADAMARD TYPE INEQUALITY FOR CO-ORDINATED CONVEX FUNCTION VIA GENERALIZED CONFORMABLE FRACTIONAL INTEGRALS.
Authors: ÇINAR TUĞBA , Kiris Mehmet Eyup , BAYRAK GÖZDE
Published: November 2023

In this study, some new Hermite-Hadamard type inequalities for convex
functions in co-ordinates are obtained with the help of generalized
conformable fractional integrals. In addition, the findings of this
study include results based on Riemann-Liouville fractional integrals
and Riemann integrals.
Self-Regulated Learning In Blended Learning Environment
Authors: Tuilan Jeane
Published: November 2023

Background:

As technology advances and online learning becomes increasingly prevalent, consideration of students' metacognitive skills grows in importance. This study aims to provide insight into the influence of Self-Regulated Learning (SRL) on the academic outcomes of English students while examining the dominant component within SRL and assessing whether there is a relationship between the use of SRL and gender.

Methodology:

The research involved 123 students from the English Department of Universitas Negeri Manado (Unima), located in North Sulawesi, Indonesia. An adjusted questionnaire was utilized in a web-based survey to explore the use of SRL amid blended learning settings.

Findings:

The statistical analysis revealed a positive relationship between SRL and the learning outcomes of the students in the blended learning environment. In particular, students predominantly used achievement orientation as their SRL component in the blended learning environment, while gender differences in the use of SRL strategies were found to be statistically insignificant.

Conclusion:

As a result, this study highlights the importance of self-regulated learning in the improvement of student outcomes in a blended learning environment. The prominence of performance orientation is a noteworthy aspect of SRL application. Additionally, the lack of notable gender-based disparities in the utilization of SRL implies a level of equality in the educational setting.

Originality:

This study aims to fill an important gap in current understanding by exploring the complex relationship between SRLs, gender and blended environments among English language learners. By investigating the dynamics of effective learning strategies in the current digital age, this study aims to contribute to a comprehensive understanding of the factors that influence academic success and pave the way for targeted educational interventions.
The Use of Mobile Applications in Digital Project-based Learning to Improve Studentsâ€™ English Speaking Skill
Authors: Kusmaryani Woro , Zona Tanjung Firima
Published: November 2023

Background:
For Indonesian teachers and students alike, learning to speak English is still a significant difficulty. The use of media, especially mobile applications in English language learning can help draw in learners, boost motivation, and encourage creativity.
Methodology:
Convergent parallel mixed-methods was employed with 40 students as participants in this research. The data used was tests, documents, observation, and interview which analyzed quantitatively and qualitatively through statistical Wilcoxon signed ranks test, coding, and thematic analysis.
Findings:
Mobile applications used in this research were YouTube, Tiktok, Instagram, Duolingo, Talk, Elsa, Seesaw, Cake, Pixton, Speech to Text, and Capcut. The implementation process was divided into 5 stages; planning stage, implementation stage, evaluation stage, reflection stage, and follow-up stage. The pre-test and post-test results showed that the value of the asymptotic sign (2-tailed) 0.000 < 0.05 indicated that the use of mobile applications could greatly enhance students' speaking skill. The studentsâ€™ perception showed that mobile applications in the classroom made learning more convenient, students could use them to practice English skills, complete assignments, find out information, or even receive the materials their lecturers offer them.
Conclusion:
The use of technology, such as mobile applications, can be a useful aid in the study of the English language, giving students more exposures, practices, and individualized instructions.
Originality:
This research reveals the implementation, effectiveness, and students' perceptions of mobile applications used in digital project-based learning. It is possible to maximize the benefits and minimize the drawbacks.
STUDYING THE ELECTRICAL SYSTEM FOR THE NEEDS OF ELECTRICAL ENERGY AT THE PORT OF KIJING
Authors: Putra Halim Nober Pratama , Arsyad Muhammad Iqbal , Purworaharjo Purworaharjo
Published: November 2023

Electricity is one of the most important aspects of human life. It is required in various sectors. To maintain stability, electricity providers need to accurately forecast the demand for electricity. This research utilizes the Simple Linear Regression method with the assistance of Excel simulation. Based on the calculations, the analysis reveals the estimated power requirement for industrial load at Pelabuhan Kijing, particularly for the next 10 years, with a minimum of 4,053,685 Watts (4.053685 MVA) based on the predicted power consumption for each year, which experiences an average annual increase of 11.28%. The projected load for the year 2033 is estimated to be 5.802129 MVA. This study employs the one-way ANOVA analysis method to examine the data on the increase in the number of connected power loads in the industrial sector at Pelabuhan Kijing. The data collected from 2023 to 2033 indicates that there is no significant difference between the groups based on the ANOVA analysis. This conclusion is drawn from the ANOVA calculations, where the p-value is greater than the predetermined significance level. Thus, the predicted total load increase for the next 10 years suggests that there is no need to add transformer capacity since the existing capacity is sufficient. This research provides a better understanding of the growth trends in connected power loads and transformer capacity requirements at Pelabuhan Kijing within the specified time frame.
ANALYSIS OF FM BROADCAST RADIO SIGNAL RECEPTION IN BORDER AREAS USING SEVERAL ANTENNA MODELS
Authors: Al Muflihin Amru Hisyam , Imansyah Fitri , Kusumawardhani Eka
Published: November 2023

Information is now a basic need for every people, including the people in border areas. Therefore, it is an obligation for the government to provide information media that can be reached by all levels of society, one of which is FM radio broadcast media. This research aims to identify and assess the quality of FM radio broadcasts in the border area of Sambas Regency using several antenna models which in the area is a vulnerable area of signal leakage by neighbouring countries and far from Indonesian broadcast transmitters. The assessment of FM radio broadcast quality is carried out with the determination of SINPO (Signal, Interference, Noise, Propagation, Overall) values and field strength meter measurements. The data obtained were analysed using the Miles and Hubberman interactive data processing technique. From the research conducted, it was found that 10 Malaysian FM radio broadcast channels and 2 broadcast channels from Indonesia where the dominant broadcast was received better by the yagi antenna. There were also broadcasts whose frequencies fell out of compliance with the regulations.
Correlación entre la discromatopsia y la capacidad de discriminación en la toma de color dental
Authors: Gamboa Recalde Andrea Estela , Campoverde Nivicela Silvia Jessenia , Real López Blanca Emperatriz
Published: November 2023

En un tratamiento de rehabilitación estético exitoso se consideran la forma, textura y color, en este último la selección puede verse afectada por factores como la discromatopsia que ocasiona un error de apreciación cromática. Objetivo: Determinar la relación entre la discromatopsia presente en estudiantes de odontología y la capacidad de discriminación durante la toma de color dental. Metodología: estudio observacional en 308 estudiantes de los últimos semestres de la Facultad de Odontología de la Universidad Central del Ecuador, mediante el test de Ishihara se diagnosticó a 18 discrómatas que conformaron el grupo de estudio, en igual número se conformó el grupo control con estudiantes tricrómatas sin déficit de agudeza visual. La valoración de la apreciación cromática dental se realizó mediante seis evaluaciones de valor, matiz y saturación en colorímetros Vita 3D Master Toothguide y Linearguide. Se utilizó T de Student para comparar los datos cuantitativos; y finalmente la correlación de Pearson para determinar la asociación de dos variables. Resultados: se encontró que existe variación estadísticamente significativa en el desempeño de las evaluaciones realizadas entre los grupos discrómatas y tricrómatas (p= 0,014). En la comparación de los errores por los participantes en la dimensión de color se determinó en la dimensión Valor un p 0,047. Se obtuvo una correlación de 0,615. Conclusión: La discromatopsia disminuye el poder de discriminación durante la toma de color dental en el Valor. Existe una correlación moderada entre los grupos de estudio.
Estética de la sonrisa en ortodoncia
Authors: Escobar Pacheco Myriam Jeanneth , Espinosa Torres Christian Orlando , Santacruz Escobar Paul Santiago
Published: November 2023

La apreciación de la belleza en una sonrisa está dada por varios factores que podrían marcar diferencias entre Ortodoncistas versus el público en general. Objetivo: Evaluar la percepción de la estética de la sonrisa entre ortodoncistas y no ortodoncistas. Materiales y Métodos: Se aplicó una encuesta virtual, donde se evaluaron las perspectivas en cuanto a la estética de una sonrisa. La muestra fue conformada por 101 profesionales con conocimientos de Ortodoncia y 102 no ortodoncistas, quienes observaron cinco grupos de tres fotografías que fueron modificadas en cada uno de los factores de estética como son: exposición dental, línea media, arco de la sonrisa, exposición gingival y grosor labial; donde los participantes debían clasificarlas, según su criterio como: bella, aceptable o antiestética. Resultados: Se observó por medio de un chi cuadrado con un valor de p < 0,05 que existió diferencias estadísticas significativas entre ortodoncistas y no ortodoncistas. Los primeros calificaron como antiestético a factores como: exposición dental mayor a 5 mm y línea media dental desviada 5mm; mientras que los no ortodoncistas consideraron antiestético a los labios delgados. Conclusiones: La percepción de la estética en una sonrisa por parte de Ortodoncistas y no Ortodoncistas es diferente puesto que los primeros dan prioridad a las piezas dentales antes que a los tejidos blandos circundantes.
Rehabilitación del maxilar superior con una prótesis híbrida superior en Peek: reporte de caso clínico
Authors: Burneo Carrera Samanta María , Chiluisa Muso Rosa Ana
Published: November 2023

Se presenta un caso de alta complejidad de prótesis implanto asistida, reemplazando el metal por un material termoplástico policíclico lineal semicristalino como el polieteretercetona PEEK que se ha propuesto para la fabricación de hibridas o protocolos en implantología. Este artículo resume las investigaciones actuales sobre las aplicaciones de PEEK en implantes dentales, especialmente para la mejora de las modificaciones de la superficie y del cuerpo de PEEK. A propósito de un caso clínico en un paciente de sexo masculino en el que se realizó como tratamiento un protocolo superior con estructura PEEK y coronas libres de metal.
Conditioning, bonding, and cementation of orthodontic appliances in teeth with enamel alterations. Literature review
Authors: Vallejo Monrroy Catherine Andrea , Pedrosa Astudillo Jackeline Beatriz , Ortega López Miriam Fernanda , Puebla Ramos Lorenzo , Noborikawa Kohatsu Andrés Kenichi , Ramos Montiel Ronald Roossevelt
Published: November 2023

Objective: Carry out a narrative review on the information available about the conditioning, bonding, and cementation of orthodontic appliances in teeth with enamel alterations. Materials and methods: Descriptive, retrospective research with a documentary design was carried out. 178 scientific articles were found in reliable sources such as Google Scholar, Scielo, PubMed, Scopus, Springer, Scientific Reports, and Elsevier related to the conditioning, bonding, and cementation of orthodontic appliances in teeth with enamel alterations; of which, 29 articles met the inclusion criteria and were selected. Results: Etching with 37% phosphoric acid plus composites remineralizing ingredients were more effective during orthodontic treatment in teeth with enamel alterations than other studied materials such as sodium hypochlorite, hydrochloric acid, bromelain gel, and papain gel. Conclusion: The materials that improve the conditioning, bonding, and cementation of orthodontic appliances in teeth with enamel alterations are phosphoric acid and sodium hypochlorite (NaOCI) with a concentration of 5.25%. Also, using deproteinizing agents could improve the resistance of the composite to eviction.
Revisión bibliográfica de lupus eritematoso sistémico generalidades, manifestaciones clínicas y su manejo en odontología
Authors: Peralta Escandón Ariana Belén , Rodas Serrano Agustín Esteban
Published: November 2023

El Lupus Eritematoso sistémico es una patología crónica caracterizada  por su respuesta autoinmunitaria además de que se presenta mayormente en el sexo femenino y en poblaciones como la hispanoamericana, afroamericana y asiática  Al ser una patología sistémica presenta manifestaciones clínicas como cutáneas, neurológicas, hematológicas, renales, pulmonares y odontológicas. Las  molestias en la cavidad oral afectan en la  calidad de vida de los pacientes con LES. El objetivo de esta investigación es presentar aspectos generales pero relevantes de lupus eritematoso sistémico, sus manifestaciones especialmente odontológicas y como los afecta Además de saber cómo se debe manejar un paciente con diagnóstico de LES. Método  se realizó una búsqueda de artículos científicos en Google Academico, Pubmed, Scielo, Elsevier, Scopus  y Medline.
Modo de falla en premolares superiores endodonciados, rehabilitados con coronas de disilicato de litio
Authors: Balladares Araujo Grace Anabel , Fernández Freire Julio Humberto , Dávila Gallardo Daniela Cristina
Published: November 2023

Factores como la reducción de tejido dental existente después de un tratamiento endodóntico, el diseño de tallado y el material restaurador condiciona el éxito de la rehabilitación. Objetivo: Evaluar la resistencia compresiva y el modo de falla frente a fuerzas axiales de premolares superiores endodonciados, rehabilitados con coronas de disilicato de litio. Metodología: treinta premolares superiores sanos, aleatoriamente serán clasificados en tres grupos, un grupo control y dos experimentales. Todos los dientes fueron endodonciados y rehabilitados con coronas de disilicato de litio. Las muestras serán sometidas a 5000 ciclos antes de someterse a fuerzas compresivas axiales con la máquina de fuerzas universales. Resultados: Los valores de la resistencia compresiva son para el grupo control (D) 675,7 N, para los grupos experimentales, grupo perno corona (C) 1118,5 N y grupo endocorona (E) 1403,9 N, mediante la prueba Post Hoc de Tukey, Diente (D) y Perno Corona (C) p= 0.020, Diente (D) con Endocorona (E) el p= 0.000, en la relación Perno Corona (C) con Endocorona (E) p = 0.171 > 0.05 es la única relación donde no existe una diferencia significativa entre estas dos variables. La prueba t de Student indica que el tratamiento de Endocorona es la que más resiste a la compresión. En cuanto al modo de fallo, al realizar la prueba de Chi-cuadrado se tiene un p= 0.301. Conclusión: se determina que la endocorona es el procedimiento recomendado.
Osteoma de hueso compacto en maxilar superior
Authors: Pereira Peñaherrera Karina , Quel Carlosama Franklin , González Bustamante Andrea
Published: November 2023

Un osteoma es una lesión benigna caracterizada por la presencia de tejido óseo tanto cortical como esponjoso. Los osteomas muestran un crecimiento lento, pero continuo y pueden ser lesiones únicas o múltiples con variación en el tamaño. Se presenta el caso de un paciente de sexo masculino de 54 años de edad que acude a la clínica dental Odontis presentando dolor severo en la región superior izquierda asociado a zona de molares. Se realiza análisis radiográfico y tomográfico para luego hacer la remoción quirúrgica de la lesión y el estudio histopatológico correspondiente.  Se encontró en la biopsia la presencia de hueso laminar denso y compacto con sistemas similares a los de Havers; sin actividad mitótica o atípica celular. Se diagnostica un osteoma periférico de hueso compacto en maxilar superior en íntima relación con seno maxilar.
Concepto all on four para mandíbula completamente edéntula en paciente sistémicamente comprometido
Authors: Lomas Albuja Diego , Morales Sánchez Alberto , Bajaña Hidalgo Fernando , Vallejo Rosero Kléber , Quel Carlosama Franklin
Published: November 2023

El reto que conlleva la rehabilitación de pacientes edéntulos totales nos lleva a buscar métodos y técnicas para ello. Más aún si se trata de pacientes con alguna enfermedad sistémica. En la rehabilitación con implantes dentales existen diferentes protocolos para realizarlos, dentro de los cuales el del doctor Maló, denominado all on four es viable y efectivo a largo plazo. De igual manera, el uso de materiales que sean biocompatibles es un reto en la actualidad. El avance tecnológico siempre busca acortar los tiempos de oseointegración, que es lo que los pacientes más desean en una rehabilitación. Este concepto trastocado a pacientes sistémicamente comprometidos en los que el metabolismo cálcico está alterado, se manejará con materiales que fomenten la mayor diferenciación de células óseas y así mejorar la oseointegración. Uno de estos materiales es el tantalio que permite la formación ósea de mejor manera, comprobado por análisis histomorfométricos y genéticos. Paciente femenina de 63 años de edad acude a la clínica de posgrado de la Universidad Central del Ecuador en busca de un tratamiento mediante implantes dentales. El tratamiento generado fue el satisfactorio tanto en funcionalidad y estética percibida por el paciente dando una estabilidad periimplantar. Existen tratamientos con implantes dentales como la técnica all on four, que ayudan a los pacientes aún comprometidos sistemáticamente a recuperar su salud bucal.
Tratamiento dental en paciente con enfermedad cardiaca y uso de warfarina
Authors: Zurita Atilio , Ortega Zurita Carlos
Published: November 2023

El tratamiento dental en personas con alteraciones cardíacas como preinfarto o cirugías valvulares, que emplean anticoagulantes como la warfarina y presentan mala higiene bucal debe planificarse desde el inicio entre el odontólogo, especialistas e inclusive médicos (cardiólogos, hematólogos, cirujanos, etc.). La sustitución de la warfarina por una heparina de bajo peso molecular (HBPM) como terapia puente en el caso de múltiples extracciones es la mejor alternativa para evitar complicaciones de sangrado abundante o tromboembolismo. En este caso la mejor elección fue el uso de la enoxaparina. La utilización de antibióticos contribuye también al éxito del tratamiento evitando infecciones posteriores al procedimiento quirúrgico y más si el paciente presenta afecciones preexistentes. Precautelar con protocolos terapéuticos adecuados la integridad del paciente antes, durante y después de realizarle las extracciones múltiples; evitando así sangrado abundante, posible infección posoperatoria y/o descompensación sistémica. Paciente masculino de 67 años con dos preinfartos y cirugía valvular cardíaca con mala higiene oral requiere realizarse: profilaxis, remoción de cálculo dental y extracciones múltiples para posteriormente ejecutar prótesis dentaria total de acrílico superior y prótesis cromo cobalto inferior para mejorar estética y función masticatoria. Luego de dos semanas posteriores a las extracciones múltiples, el terreno protésico se encuentra en excelentes condiciones y se pudo realizar prótesis dentarias con excelente adaptabilidad, estabilidad, funcionalidad y buena estética. Aplicar la terapia puente con enoxaparina fue la mejor alternativa para evitar sangrado profuso o formación de tromboembolismo que pudo conllevar a complicaciones sistémicas para el paciente.
Regeneración ósea guiada en el tratamiento del quiste radicular: Reporte de caso
Authors: Morillo Manchego Laura , Peralta Henao Vanessa , Vásquez Viana María , Guzmán De Ávila Jaime , Harris Ricardo Jonathan
Published: November 2023

Los quistes radiculares son quistes odontogénicos inflamatorios, la mayoría de estas lesiones involucran el ápice del diente lesionado y aparecen como imágenes radiolúcidas bien definidas, el tratamiento con mayor frecuencia es quirúrgico y de tipo conservador, realizando enucleación del tejido patológico y curetaje del lecho quirúrgico, comúnmente el defecto óseo es considerable, siendo importante la regeneración ósea guiada. Se describe el caso de paciente con quiste radicular en la mandíbula, el cual fue tratado quirúrgicamente y los defectos óseos posterior a la quistectomía, fue manejado con regeneración ósea guiada, injerto óseo y plasma rico en fibrina, con resultados satisfactorios en la cicatrización ósea.
Lesiones cervicales no cariosas en pacientes adultos. Revisión de la Literatura
Authors: Riera Arteaga Christina Valeria , Delgado Gaete Bolivar Andres , Morales Byron , Ramos Montiel Ronald Roossevelt
Published: November 2023

Introducción: La lesión cervical no cariosa, se ha definido como la pérdida de estructura dental en la unión cemento-esmalte que no está relacionada con la caries dental; el esmalte se afina progresivamente aproximándose a la unión cemento-esmalte, por lo que la región cervical representa el lugar más vulnerable. Objetivo: se realizó una revisión de la literatura sobre las lesiones cervicales no cariosas en pacientes adultos. Métodos:  revisión narrativa, de la literatura científica. Se consultaron las bases de datos electrónicas de PUBMED/MEDLINE, BIREME, REDALYC.org, SciELO.org, y Google Académico y Google Scholar, se limitó a publicaciones desde enero 2014 a junio 2022 en idioma español e inglés. Se establecieron como criterios de inclusión estudios observacionales, ensayos aleatorios controlados (ECA), que comunicaran aspectos de las lesiones cervicales no cariosas en pacientes adultos referidos a sus características clínicas, prevalencia, factores etiológicos, diagnóstico y tratamiento. Resultados: En total se revisaron 47 artículos de los cuales solo 22 cumplieron los criterios de inclusión. Los estudios seleccionados reportaron información  relevante y útil relacionada con las características clínicas, epidemiológica, factores etiológicos, diagnóstico y tratamiento de las lesiones cervicales no cariosas. Conclusiones: La evidencia científica disponible sugiere que existe una prevalencia relativamente alta de lesiones cervicales no cariosas a nivel mundial que aumenta con la edad; el consumo de alimentos y bebidas acidas, así como un pH salival bajo  el cual se  ha asociado con una mayor aparición de  lesiones cervicales no cariosas,  por lo que estas patologías requieren un abordaje multidisciplinario tanto en lo curativo como en lo preventivo.
Estabilidad primaria de dos tipos de implantes instalados en modelos de atrofia ósea y densidad limitada
Authors: Benenaula Bojorque Juan Andrés , Zambrano Aguilar Héctor Roberto
Published: November 2023

La elección de un implante adecuado es crucial cuando se trata de rebordes subantrales. Esta investigación evaluó la estabilidad primaria de dos tipos de implantes instalados en modelos in vitro. Metodología: Se colocaron cuatro grupos experimentales de 10 implantes cada uno: G1 – Implantes cilindro cónicos de espira simple de 4 x 13 mm; G2 – Implantes cilindro cónicos de espira simple de 5 x 13 mm; G3 – Implantes cónicos de espira doble de 4 x 13 mm y G4 – Implantes cónicos de espira doble de 5 x 13 mm en bloques de poliuretano (10 pcf) que simularon una densidad ósea D3 y seccionados a una altura de 8 mm que corresponde a una clasificación SA3 de Misch; la estabilidad primaria se valoró mediante el análisis del torque de inserción (N/cm) y el ISQ mediante la herramienta Penguin RFA. Resultados: El diámetro, independientemente del tipo de implante, no resultó ser una variable que influya en el la estabilidad primaria de las muestras estudiadas, ya que no generó diferencias estadísticamente significativas en el torque de inserción (p = 0,113) ni tampoco en los valores de ISQ (p = 0,131); mientras que el tipo de implante, independientemente del diámetro, resultó ser una variable que influye en el torque de inserción, atribuyendo un mejor desempeño a los implantes cilindro cónicos de espira simple (p = 0,00). Conclusiones: Al ser colocados en los modelos in vitro, los implantes cilindro cónicos de espira simple tuvieron una mejor estabilidad primaria que los implantes cónicos de espira doble.
Prevalencia del ángulo y radio de curvatura en la raíz mesial de primeros molares inferiores con el uso de tomografía computarizada
Authors: Aguayza Castro Michelle Estefania , Espinosa Torres Erika Elizabeth
Published: November 2023

Introducción: La complejidad del tratamiento endodóntico en molares inferiores se encuentra principalmente en la raíz mesial debido a que los conductos presentan, en menor o mayor grado, una curvatura dirigida hacia distal que genera inconvenientes en las distintas etapas del tratamiento de conducto. Objetivo: Determinar la prevalencia del ángulo y radio de curvatura en la raíz mesial de primeros molares inferiores permanentes mediante el uso de tomografías computarizadas de haz cónico utilizando las técnicas de Schneider y Estrela respectivamente, relacionado con edad, sexo y predisposición a bilateralidad. Materiales y métodos: Se recolectaron 80 tomografías CBCT de la base de datos de un centro radiológico de Quito, se analizaron 160 raíces mesiales de primeros molares inferiores permanentes mediante la técnica de Schneider (ángulo de curvatura) y técnica de Estrela (radio de curvatura). Resultados: La media del ángulo fue 33° y del radio 10,99mm. Entre sexo y edad no existió relevancia estadística y se evidenció la presencia de bilateralidad. Conclusiones: la raíz mesial del primer molar mandibular tiende a presentar una curvatura severa (tercio cervical y medio) según el ángulo de curvatura (Schneider) y una curvatura leve (tercio apical) según el radio de curvatura (Estrela). Ambos valores deben ser considerados de forma independiente al establecer la dificultad dada por la curvatura radicular. La edad y el sexo no son variables influyentes en los valores de ángulo y radio de curvatura. Se comprobó la existencia de bilateralidad de ambas medidas.