Juan Fernando Aristizábal

• Magister
• Head of Department at University of Valle

Background. There is a lack of studies evaluating the toxicity of nitric oxide (NO) precursors in chitosan/L-arginine hydrogels and their topical administration. However, clarifying the characteristics of these elements is essential for their possible use in non-surgical techniques of tooth movement acceleration. Such characteristics include intera...

Objective(s) This study aims to evaluate the influence of the piezocision surgery in the orthodontic biomechanics, as well as in the magnitude and direction of tooth movement in the mandibular arch using novel artificial intelligence (AI)‐automated tools. Materials and Methods Nineteen patients, who had piezocision performed in the lower arch at t...

With the advent of 3D printing and additive manufacturing of dental devices, IntraOral scanners (IOS) have gained wide adoption in dental practices and allowed for efficient workflows in clinical settings. Accurate automatic identification of dental landmarks in IOS is required to aid dental researchers and clinicians to plan and assess tooth posit...

Objectives To evaluate root resorption of lower incisors and canines quantitatively in a group of patients who underwent orthodontic treatment with piezocision and/or a collagen reinforcement technique with a fully resorbable three-dimensional (3D) collagen xenograft matrix compared with a control group. Materials and Methods The study sample of t...

In this paper, machine learning approaches are proposed to support dental researchers and clinicians to study the shape and position of dental crowns and roots, by implementing a Patient Specific Classification and Prediction tool that includes RootCanalSeg and DentalModelSeg algorithms and then merges the output of these tools for intraoral scanni...

This paper aims to combine two different imaging techniques to create an accurate 3D model representation of root canals and dental crowns. We combine Cone-Beam Computed Tomography (CBCT) (root canals) and Intra Oral Scans (IOS) (dental crowns). The Root Canal Segmentation algorithm relies on a U-Net architecture with 2D sliced images from CBCT sca...

Objective Standard methods of evaluating tooth long axes are not comparable (digital dental models [DDMs], panoramic and cephalometric radiographs) or expose patients to more radiation (cone‐beam computed tomography [CBCT]). This study aimed to compare angular changes in tooth long axes using DDMs versus using CBCTs. Settings and sample population...

Introduction This study aimed to compare the extent of buccal bone defects (dehiscences and fenestrations) and transversal tooth movement of mandibular lateral segments in patients after orthodontic treatment with and without piezocision in cone-beam computed tomography and digital dental models. Methods The study sample of this study consisted of...

Desde que se inició su reporte a nivel mundial en 1975 por la Organización Mundial de la Salud, la obesidad se ha comportado como una pandemia. Datos de 2016 muestran que un 13 % del total de la población mundial adulta es obesa. Esta pandemia tiene efectos a nivel sistémico muy conocidos, como hipertensión arterial, diabetes, accidentes cerebrovas...

This paper proposes machine learning approaches to support dentistry researchers in the context of integrating imaging modalities to analyze the morphology of tooth crowns and roots. One of the challenges to jointly analyze crowns and roots with precision is that two different image modalities are needed. Precision in dentistry is mainly driven by...

Objective: To evaluate a protocol for bonding metallic brackets after bleaching with hydrogen peroxide (HP). Methods: 60 extracted maxillary premolar were randomly divided into an unbleached control group and two groups bleached with a solution of 35% hydrogen peroxide prior to bonding. The teeth in one of the treated groups were bonded immediatel...

Aim: We aimed to evaluate the correlation between the polymorphism of the interleukin 1-Beta (IL1-β, +3954 C>T) and tooth movement, in a group of Colombian patients undergoing surgically accelerated orthodontic tooth movement. Methods: The study was nested to a controlled clinical trial. Blood samples were taken from 11 women and 29 healthy Colo...

Objective: The purpose of this study involves describing the facial morphology of a Colombian population with three-dimensional (3D) imaging, and comparing their facial morphology with the Caucasian to create a database for this ethnicity. Materials and Methods: The study, which included 135 subjects selected from the Valle University in Cali, Colo...

Introduction: the aim of this systematic review is to explore the published literature to analyze the relationship between polymorphism of interleukin 1-beta (IL-1β) and orthodontics. Methods: the search strategy developed for Medline, Scopus and Embase was used, verifying search records and selecting articles according to the guidelines set forth...

Introduction: the aim of this systematic review is to explore the published literature to analyze the relationship between polymorphism of interleukin 1-beta (IL-1β) and orthodontics. Methods: the search strategy developed for Medline, Scopus and Embase was used, verifying search records and selecting articles according to the guidelines set forth...

Objective: To compare the three-dimensional (3D) linear displacements and the mesiodistal and buccolingual angulation changes after orthodontic treatment in digital dental models (DDMs) and 3D models derived from cone-beam computed tomography (CBCT). Settings and sample population: DDM and CBCT scans were selected from 24 adults who had undergon...

In this report, we describe the successful use of alternate rapid maxillary expansions and constrictions with a hybrid hyrax-mandibular miniplate combination and simultaneous orthodontic treatment for the management of severe Class III malocclusion due to maxillary hypoplasia in an 11-year-old girl. The devices were removed after 20 months of treat...

Objective: The aim of the study was to validate a method of mandibular digital model (DM) registration, acquired from an intraoral scanner, compared with high-resolution voxel-based cone beam computed tomography (CBCT) registration with use of the mucogingival junction as the reference. Study design: Pre- and post-treatment CBCT and DM images fr...

It is possible to unify three-dimensional customized orthodontic techniques and three-dimensional surgical technology. In this case report, it is introduced a treatment scheme consisting of passive self-ligation customized brackets and virtual surgical planning combined with the orthognathic surgery-first approach in a Class III malocclusion patien...

In this case report, a miniimplant system that uses vestibular and palatal screws is presented as an excellent alternative forthe treatment of and open bite case, it’s thru molar intrusion without any undesired transversaleffect that the final results were achieved. The main topics treated are: diagnostic, treatmentplan, surgical protocol, anatomic...

Condylar Hyperplasia (CH) is a self-limiting pathology condition that produces severe facial deformity at the expense of mandibular asymmetry. In this case report a 15-year-old female patient was diagnosed with Unilateral Condylar Hiperplasia (UCH) by mean of single-photon emission computed tomography (SPECT) and histological study. A high condylec...

The aim of this study was to assess whether the application of low-level laser therapy (LLLT) during the first stage of orthodontic treatment has an effect on local bone resorption and is detectable at the systemic level by measuring deoxypyridinoline levels (Pyrilinks) in urine. This was a randomized (1:1), double-blind, active-controlled, paralle...

The aim of this study was to describe periodontal effects and treatment time of Periodontally Accelerated Osteogenic Orthodontics (PAOO) and to determine if Deoxypyridinoline could be used as a biochemical marker of bone turnover in patients undergoing PAOO. We compared 5 patients undergoing PAOO (5 males, mean age: 29.6±9.8 years) with 5 control p...

Resumen La maloclusión Clase III puede ser tratada con protracción maxilar, redirección del crecimiento mandibular o una combinación de ambas. La máscara facial es el gold estándar en cuanto a la protracción maxilar, sin embargo se ha encontrado que su mayor efecto es mandibular. Con la aparición del anclaje esquelético se han utilizado nuevos prot...

RESUMEN Las brackets de autoligado (BA) han resurgido con fuerza en las últimas dos décadas y están siendo muy solicitadas por parte de ortodoncistas y pacientes. D. Damon ha desarrollado uno de los sistemas más populares y propone que su baja fricción es un factor primordial que permite trata-mientos más eficientes. En el presente artículo se real...

Turner syndrome is caused by complete or partial absence of one X chromosome. These patients usually have a delay in growth and altered body proportions, causing sexual infantilism, short stature, delayed bone maturation, and variations in craniofacial morphology, among other systemic complications. The skeletal features associated with this syndro...

Becker muscular dystrophy is an X-chromosomal linked anomaly characterized by progressive muscle wear and weakness. This case report shows the orthodontic treatment of a Becker muscular dystrophy patient with unilateral open bite. To correct patient's malocclusion, general anesthesia and orthognathic surgery were not considered as an option. Conven...

RESUMEN. Para diagnosticar correctamente la periodontitis agresiva (PA) se debe tener en cuenta la información obtenida de la entrevista con el paciente, examen clínico periodontal, radiográfico y de laboratorio, según necesidad. El tratamiento de la PA va encaminado a la reducción o eliminación de los agentes causales, manejo de los factores de ri...

Accelerated Orthodontic treatment can reduce risks of enamel demineralization, root resorption and periodontal problems, and contribute to have more satisfied patients and professionals with more efficient practices. Several methods have been evaluated to improve the rate, magnitude and stability of orthodontic movement, which include surgical, bio...

In this case report, a mini implant system that uses vestibular and palatal screws is presented as an excellent alternative for the treatment of and open bite case, it’s thru molar intrusion without any undesired transversal effect that the final results were achieved. The main topics treated are: diagnostic, treatment plan, surgical protocol, anat...

To show craniofacial and dental changes to the mandibular dentition with the use of cervical headgear as well as the mechanics used in the early management of Class III malocclusions. Clinical photos and cephalometric radiographs of 5 patients with different types of Class III malocclusion treated with mandibular cervical headgear are shown in this...

La siguiente revisión enfoca desde una perspectiva histórica y basándose en la literatura publicada, algunos de los conceptos mas controvertidos en oclusión. En la primera parte así como en la segunda, se hace una evolución cronológica de los conceptos de posición mandibular ideal (Relación Céntrica (RC)) y de patrones de desoclusión. La última par...