Rodrigo Ernesto Salazar Gamarra

Universidad Científica del Sur

PurposeThe aim of this study is to present the development of a new technique to obtain 3D models using photogrammetry by a mobile device and free software, as a method for making digital facial impressions of patients with maxillofacial defects for the final purpose of 3D printing of facial prostheses. Methods With the use of a mobile device, free...

Statement of problem: Evaluate the effect of orbital prosthesis retained by implants through a specific quality of life (QOL) questionnaire provides important information on patients QOL, great incentive for the multidisciplinary team and public health support to continue work in this area. Purpose: The objective of the study was to evaluate pat...

ARTICLE INFO ABSTRACT Purpose: The aim of this study was to present a workflow for obtaining realistic 3D models of human faces, using enhanced tools and features of free software. Methods: Faces of six (6) subjects of varying ages were digitized using monoscopic photogrammetry technology according to PlusID (+ID) methodology by combining smartphon...

Conventional techniques described in the literature for the manufacture of ocular prostheses are time‐consuming since they involve manual work. The use of technologies could improve this laborious process, providing better aesthetic outcomes. This technique describes how to manufacture the ocular portion of an orbital prosthesis using a smartphone...

3D e impressoras 3D que materializam os protótipos 3D que nos ajudam a finalizar essas próteses manualmente com muito menos esforço, menos tempo e com melhor qualidade do que por métodos de alto custo. Esta metodologia é o primeiro fluxo de trabalho para a produção de próteses faciais 3D com ferramentas de baixo custo, economizando centenas de milh...

We live in a world where digitalization has penetrated deep into almost every aspect of our routine life. Digital technologies, like facial scanning systems, computed tomography, and intraoral scanning systems, have been a revolution in dental and facial aesthetic, and it has been just as it is in most other fields (1). However, no matter how conve...

Introduction: To evaluate the filling ability of two obturation techniques in 3D printed teeth with perforating internal resorption (PIR). Methods: A maxillary central incisor was instrumented and scanned by microcomputed tomography (micro-CT). The 3D model was exported in stereolithographic format and, with the aid of software OrtogOnBlender, a P...

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...

This work proposes an algorithm to reconstruct 4 precordial electrocardiogram (ECG) lead signals. Standard cardiovascular disease (CVD) monitoring and detection uses all 12 available ECG leads. However, this number of leads implies a certain complexity of the equipment in terms of size, weight, and power consumption. Computational algorithms aimed...

ABSTRACT Bitemark analysis is a challenging procedure in the field of criminal case investigation. The unique characteristics of dentition are used to find the best match between the existing patterned injury and the suspected perpetrator in bitemark identification. Bitemark analysis accuracy can be influenced by various factors, including biting...

Background: Within the broad spectrum of rehabilitation, maxillofacial prostheses are those that are made to restore the appearance of a person who has suffered facial deformation due to cancer, accidents, congenital diseases, among others. Although these are not made to restore functionality, they have a major impact on restoring the patient's qua...

The use of exponential technologies is changing how people live and interact; this has been called the “Fourth Industrial Revolution”. Within these technologies, 3D printing is playing a leading role, especially in health. In this context, this literature review aims to present the state of the art of 3D printing, its digital workflow and applicati...

The objective of the present study is to make a comparison between various free and open-source software used for medical image processing, such as 3D Slicer (version 4.11), ITK-Snap (version 3.8), and Invesalius (version 3.1) in its application for the calculation of solitary fibrous tumor volumes. Knowing the size, shape, and volume of mesothelio...

Historically, facial prosthetics have successfully rehabilitated individuals with acquired or congenital anatomical deficiencies of the face. This history includes extensive efforts in research and development to explore best practices in materials, methods, and artisanal techniques. Presently, extraoral maxillofacial rehabilitation is managed by a...

Blink detection is an important task for human-computer interaction and behavior analysis. Although there is previous research regarding drowsiness detection, computer vision syndrome, and computer access by disabled patients, these have certain limitations for their algorithm’s accuracy due to a wide range of acquisition. Particularly, head moveme...

Surgical treatment of head and neck cancer causes severe tissue loss, therefore, deformities and psychosocial consequences. In cases involving orbit exenteration, satisfactory reconstruction can only be achieved with prosthetic replacement, despite successful reconstructive plastic surgery. Extraoral implants, 3D scanning, and prototyping technolog...

Background: The artistic techniques necessary to fabricate facial prostheses mainly depend on individual skill and are not a resource easily reproduced. Digital technology has contributed to improved outcomes, often combining analog and new digital techniques in the same workflow. Methods: This article aims to present an innovative workflow to prod...

Background: Prosthetic restorations are made to adapt or attach missing human parts in order to restore function and appearance. Maxillofacial defects connote a greater impact on patients, since the face cannot be concealed, and all the senses of the human body are expressed in it. Therefore, in order to restore the patient’s quality of life, they...

Statement of problem: Facial scanning systems have been developed as auxiliary tools for diagnosis and planning in dentistry. However, little is known about the trueness of these free software programs and apps for facial scanning. Purpose: The purpose of this in vitro study was to evaluate the trueness of 3D facial scanning by using Bellus3D an...

Statement of problem Hygiene and disinfection are important factors for preserving facial prostheses and supporting tissue health. However, a method that does not accelerate degradation or color change is necessary. Purpose The purpose of this in vitro study was to evaluate the effectiveness of irradiation with ultraviolet C light-emitting diode (...

O presente capítulo tem por objetivo analisar as limitações do protocolo de fotogrametria facial proposto na documentação oficial do add-on OrtogOnBlender, adaptando-o para uma melhor digitalização da região nasal.

The new coronavirus (COVID-19) quickly became a pandemic. Its transmission occurs mainly by direct contact, but its indirect transmission cannot be neglected. The dental office becomes a place of a high risk of contamination, mainly through aerosols and particles decanted on the surface. Concern about biosafety has become imminent and essential sup...

Background: Forensic dentistry identification commonly involves using dental cast models as ante-mortem data. Here, dentists generally send the pictures as well as the dental records. However, in recent times, dentists – especially orthodontists and prosthodontists – are using 3D scanners in view of reducing the space for cast model storage as well...

INTRODUÇÃO O tratamento do câncer de cabeça pescoço deve ser conduzido com a atuação de diversos profissionais da área de saúde, a fim de proporcionar os melhores resultados oncológicos, funcionais e estéticos. A terapêutica desenvolvida de forma multidisciplinar mostrou-se capaz de encontrar alternativas para que, além da resolução da patologia on...

Philosophical discussion of aesthetics on facial prosthetics, using case reports where quality of life was established. ISSN – 0004-5276