Pablo Navarro

Universidad de La Frontera · Department of Comprehensive Dentistry

Edentulism can generate negative impacts on self-esteem, interpersonal relationships, and oral functions. Removable prostheses are commonly used for tooth replacement, but they may cause discomfort due to micromovements during mastication. Objective and quantifiable methods are needed to evaluate these micromovements. A pilot study was conducted to...

Chewing is a complex procedure that involves sensory feedback and motor impulses controlled by the trigeminal system in the brainstem. The analysis of mandibular movement is a first approximation to understanding these mechanisms. Several recording methods have been tested to achieve this. Video, ultrasound, the use of external markers and kinesiog...

The mandibular first molar (MFM) commonly presents two roots with two canals in the mesial root and one or two canals in the distal root. However, morphological variations have been described in different populations, which must be considered when planning endodontic treatment. The aim of this study was to analyze the internal and external morpholo...

The rat jaw is one of the most interesting anatomical structures in dental science research, due to its similarity to the human jaw. The aim of this study was to morphometrically characterize the mandible of rats by CBCT. The cone beam examination of 20 healthy adult female rats was analyzed. Using the examination software, it was possible to isola...

The mouth opening is an important indication of the functionality of the temporomandibular joint (TMJ). Mouth opening is usually evaluated by asking the patient to open their mouth as wide as possible and measuring the distance between the edges of the frontal incisors with a ruler or caliper. With the advancement of technology, new techniques have...

Osseointegration implies the coexistence of a biocompatible implant subjected to masticatory loads and living bone tissue adhered to its surface; this interaction is a critical process for the success of implants. The objective of this work is to analyze the osseoformation and osseointegration of a dental implant in operation for 5 years microscopi...

It has been postulated that the mandibular postural position (MPP) could not present the lower electromyographic activity (EMG) of the Masseter and Temporal muscles, and that the lower activity could be found in a larger opening. The objective of this study was to analyze the PPM in patients with different occlusal relationships and according to th...

The maxillary first premolar (MFP) presents a highly variable and complex root morphology; it is also one of the teeth most likely to suffer vertical root fractures. The aim of this study was to describe the morphology of the root and root canal system of the MFP in a Chilean population using Cone-Beam Computed Tomography (CBCT). One hundred and tw...

The aim of this of this study was to evaluate the prevalence and morphology of radix entomolaris (RE) in the mandibular first molar (MFM) in a southern Chilean sub-population by cone-beam computed tomography (CBCT). Two hundred ten CBCT images of MFM were analysed. To detect the presence of RE, the observation and measurements were standardised, ad...

The participation of undergraduate students as study subjects (SS) in research is considered a fundamental research activity of the educational experience provided by a university. Educators should promote learning by the scientific method through these activities under ethical standards for research with human beings. We designed a multidimensiona...

Several studies report that the type of food directly influences the kinematic patterns of mastication. The aim of this study was to analyze and compare the chewing cycles of adult and fully dentate participants during the mastication of foods of different texture and hardness (peanuts and carrots) using 3D electromagnetic articulography. Eleven he...

The aim of this research was to analyze the morphology of the nasal septum and inferior nasal concha bone in class III facial deformities prior to orthodontic treatment in orthognathic surgery candidates. 40 subjects were included in this research. The inclusion criteria were an Angle class III, negative overjet and SNA angle less than 80º. Patient...

VILLA, J.; BRITO, L.; PARRA, M.; NACARRO, P.; DE MORAES, M.; OLATE, S. Nasal septum deviation and inferior nasal concha bone hypertrophy in Class III facial deformity. Int. J. Morphol., 38(6):1544-1548, 2020. SUMMARY: The aim of this research was to analyze the morphology of the nasal septum and inferior nasal concha bone in class III facial deform...

The use of dental implants has been increasing in the last years; however, their chemical composition is an important issue due to the fact that the implant surface may suffer a corrosion process, allowing the possibility of ions being released and resulting in a possible biological response. Thus, the aim of this study was to evaluate the morpholo...

The root canal system of the maxillary first premolar (MFP), present a high rate of variation, especially at apical level. This complicates the action of antiseptic solutions and endodontic instruments at this level. The object of this in vivo study was to analyse by Cone Beam Computed Tomography (CBCT) the radicular and canalicular morphology of M...

The temporomandibular joints and associated muscles allow the mandible to move in the three planes (sagittal, frontal and horizontal), in this way the jaw can perform complex mandibular movements. For several decades, mandibular border movements have been studied. However, studies were initially carried out in two dimensions (2D). At the present ti...

El seno maxilar (SM) es una cavidad par presente en el hueso maxilar, que puede presentar diversas alteraciones o lesiones patológicas factibles de ser pesquisadas mediante estudios imagenológicos. En este sentido, la opacidad, el ocupamiento y/o engrosamiento de las mucosas son los signos orientadores para el diagnóstico de patologías en estas est...

Chewing has been studied from different points of view, using natural and artificial foods test. When analyzing cereal-based foods, from breakfast cereals to granola bars, the evidence is scarce. Investigate this type of food is important to understand the behavior of chewing, with foods of different compositions and textures, and how these charact...

The morphological variations of the mental foramen (MF) and mandibular foramen (MBF) have been studied for several years, and the prevalence and morphometric characteristics of double and triple foramina have been reported. The objective of this study was to establish the prevalence of variations in the MF and MBF, and to carry out a morphometric a...

Statement of problem Asymmetries in mandibular movements (MMs) can be found in patients with some temporomandibular joint disorders, condylar fracture, or after orthognathic or orthodontic surgery. Quality and symmetry of the MMs should be recorded and analyzed. However, methods for this purpose are limited. Purpose The purpose of this clinical st...

Age estimation is an important aspect In forensic investigations. Different methods in forensic odontology based on the correlation between age estimation in adults, from the analysis of the pulp/tooth area, based on the apposition of secondary dentine. The aim of the study was to develop regression models for the dental age estimation by the relat...

Aging is a dynamic process that includes various alterations in the oral cavity, with tooth loss being the most frequent. Rehabilitative treatment may include removable or fixed prostheses and implants. The aim of this study was to describe the geometric (trajectory, ranges, areas) and kinematic (speed) characteristics of the mandibular and mastica...

Objective The purpose of this study was to compare the different swallowing patterns regarding tongue movement during saliva swallowing in healthy participants. Design Seventeen participants (23.0 ± 3.6 years old) were included in this cross-sectional study. The movement of the tongue (anterior, middle and posterior portions) on the three axes of...

AGUILERA-MUÑOZ, F.; GARAY-BARRIENTOS, A.; MORENO-LAZCANO, I.; NAVARRO-CÁCERES, P. & FONSECA, G. M. Estimación de edad mediante la relación área pulpa/diente en caninos mandibulares: Estudio en una muestra Chilena utilizando el método de Cameriere. Int. J. Morphol., 38(2):322-327, 2020. RESUMEN: La estimación de edad compone un aspecto importante en...

La estimación de la edad es uno de los procedimientos más importantes para la identificación humana. Cameriere et al. propusieron un método para estimación de edad evaluando la relación área pulpa/diente utilizando radiografías dentales, basado en la aposición de dentina secundaria. El objetivo de este estudio, fue desarrollar modelos de regresión...

Precautionary measures are necessary to prevent a potential irregularity from progressing into a more severe malocclusion. The determination of the tooth size-arch length discrepancy in mixed dentition requires an accurate prediction of the mesiodistal widths of the unerupted permanent teeth to prevent future malocclusions. Objective: The purpose o...

Denture marking (DM) helps identify edentulous people with different methods. Analyzing perceptions and attitudes of denture wearers would enable understanding of the practical aspects, an analysis still absent in South America. Fifty‐three individual candidates for removable dentures were instructed on disaster victim identification (DVI) and the...

Background: Test bites have been recommended for collecting evidence of suspected dentition in bite mark analysis. However, these recommendations only suggest recording the interocclusal relationship without establishing number of records or characteristics to obtain proper records. This fails to consider not only the possibility that the recording...

Objective: Bioluminescence detects the amount of adenosine triphosphate (ATP) present on a surface, which is directly related to biological dirt. This study sought to objectify the degree of hand contamination according to sex in our study population of 40 dentistry students (63% female-37% male) with a rapid quantitative measurement technique. Mat...

The aim of this study was to analyze the general, geometric, and kinematic characteristics of the masticatory cycle’s movements in a tridimensional way, using a method developed by our study group to provide a new insight into the analysis of mandibular movements due to advancement in the potential of computational analysis. Ten individuals (20.1 ±...

Mandibular symmetry may be modified by various conditions. A number of studies have attempted to define parameters of "normality" and several techniques have been described using digital orthopantomography (OPG). The aim of this study was to determine mandibular/condylar symmetry indexes in a sample of Chilean patients. A cross sectional descriptiv...

The object of this study was to analyse the morphology and morphometry of the mandibular canal (MC) course and the mental foramen (MF) position in relation to the inferior teeth by panoramic X-ray (PAN). Vertical linear measurements were taken of each hemimandible to obtain the length of the distances analysed. We studied the MF position in relatio...

The aim of this study was to ascertain the distance from the mandibular canal to the lateral, medial and upper zones of the mandibular ramus in order to identify safety margins that reduce the risk of nerve injuries in the process of removing a bone graft. A descriptive study was conducted, analyzing bilaterally 20 CBCT exams from different patient...

The principal orthodontic problems observed in the mixed dentition phase are related to arch length and tooth size discrepancy. In order to identify such space discrepancies different methods of mixed dentition space analyses have been introduced. For this reason the purpose of this study is to generate a new regressive equation to predict the diam...

Even though one of the first bite mark cases was Doyle v. State in 1954 (a bitten cheese case), the research has focused on bite marks inflicted in human skin. As published Papers, Case Reports, or Technical Notes can constitute precedents which are relied upon in making the legal arguments and a considerable amount of case law exists in this area,...

The bur used to construct the bed where a dental implant is installed is extremely important to treatment success. The aim of this investigation was to analyze the relationship between bur diameter and implant diameter in different areas. A descriptive study was designed to analyze 5 commercial brands currently on the market. The manufacturer's ins...

Método: Se realizó una revisión manual consecutiva de las 16.835 fichas sobre las cuales se aplicaron criterios de inclusión y exclusión. Los datos se obtuvieron de radiografías panorámicas de las cuales se obtuvieron medidas lineales y angulares que fueron comparados entre dos grupos de estudio. Se desarrolló un modelo predictivo mediante análisis...

Introduction: The aim of this study was to analyze the SciELO dental journals and evaluate what statistical methods were being used in their original research articles. Material and method: A descriptive bibliometric review was performed. All original articles published in the dental journals indexed in the SciELO database between 2013 and 2014 wer...

Introduction The canal of Serres (CS) is located inferior to the mandibular canal (MC) and is highly developed in the fetus and from the birth it tends to obliterate and disappear. The purpose of this research was to establish prevalence and position of CS through digital panoramic x-rays and to propose a term to call it in agreement with Internati...

Introduction: Stability in orthognathic surgery is nowadays considered as efficient and adequate. The objective of this study was to determine and to compare the mechanical resistance to vertical load of a Le Fort I advancement osteotomy stabilized by mean of two different osteosynthesis techniques, one using two 10-hole pre-bent T-shaped plates,...

The aim of this research was to identify the abutment-implant gap using 20 N or 30 N torques for the abutment. A descriptive study was designed using 3 internal hex implant systems from four different companies; the implants were manipulated in a usual way, installing the respective prosthetic abutment in each platform using 20 N/cm² and 30 N/cm² t...

Vertical root fractures in maxillary first molars affect the mesiobuccal root in most cases. Among intrinsic factors directly related to increasing susceptibility to vertical root fractures, the thickness of the cement/dentin walls is a factor over which the clinician has a direct influence during the chemomechanical preparation. In a cross-section...

Background Several articles have used cone beam computed tomography (CBCT) to study the morphology of the maxillary molars and to ascertain its ability to visualize the second mesiobuccal canal (MB2); however, its geometric location has not been examined in depth. The aim of this study was to describe in vivo the prevalence and location of the MB2...

BRITO, L.; VILLA, J.; NAVARRO, P.; ALISTER, J.P.; URIBE, F.; OLATE, S. Inclinación de incisivos maxilares en sujetos dondeformidad facial de clase III. Opciones en cirugía primero. Int. J. Morphol., 34(4):1502-1505, 2016 RESUMEN: El objetivo de esta investigación es determinar la inclinación de incisivos maxilares en sujetos con maloclusión de clas...

The morphology of the craniofacial skeleton is influenced by the bite force, which is the most influencing factor in the determination of the facial biotype. Thus, the objective of this research was to obtain the maximum bite force (MBF) of molar and incisor teeth, and to connect them to four anthropometric indexes according to sex, and occlusal re...

Introduction: The aim of this research was to identify the characteristics that differentiate research design for classification. A descriptive bibliometric review was performed where dental SciELO journals between the first semester of 2013 and the first semester of 2014 were identified. Material and methods: A descriptive bibliometric review was...

Navarro P, Cantín M, Ottone NE. Diseños de investigación utilizados en revistas odontológicas de la red SciELO: Una visión bibliométrica AVANCES EN ODONTOESTOMATOLOGÍA/191 RESUMEN Introducción: El objetivo de esta investigación fue identificar las características que diferencian aquellos dise-ños de investigación en odontología para su clasificació...

Background: Odontogenic infection is a common condition in Latin America. The aim of this research was to determine the profile of odontogenic maxillofacial infections and to identify the link between these and the pain felt by patients admitted to the emergency dental service of the Hernán Henríquez Aravena Hospital in Temuco, Chile. Subjects an...

The Functional maximum bite force (FMMF) is defined as the maximum force generated between the maxillary and mandibular teeth. Therefore, the aim of this research was to obtain real data about the FMMF at a molar, premolar, canine and incisive level in young adult individuals. The study included a sample of 50 individuals between 18 and 25 years ol...

Purpose: The aim of this study was to analyze the anatomical dimensions of the buccal bone walls of the aesthetic maxillary region for immediate implant placement, based upon cone-beam computed tomography (CBCT) scans in a sample of adult patients. Methods: Two calibrated examiners analyzed a sample of 50 CBCT scans, performing morphometric anal...

Introduction: The mandibular incisive canal (MIC) is the anterior extension of the mandibular canal which contains the mandibular incisive nerve and blood vessels that provide blood supply and innervation to the mandibular anterior teeth. Methods: In order to determine the detectability, extent, and position of the MIC, conventional panoramic radio...

Purpose: To evaluate in vitro resistance of 5 techniques of internal fixation of bilateral fractures involving the mandibular angle and body. Materials and Methods: Twenty-five polyurethane mandibles were used as substrates, fixed with a 2-mm fixation system, and divided into 5 groups: I, 1 4-hole plate, without intermediate space, in the neutral z...

The electromagnetic articulograph (EMA) is a device that can collect movement data by positioning sensors at multiple points, measuring displacements of the structure in real time, as well as the acoustics and mechanics of speech using a microphone connected to the measurement system. The aim of this study is to describe protocols for the generatio...

Background Many procedures currently require the use of bone grafts to replace or recover bone volume that has been resorbed. However, the patient’s opinion and preferences must be taken into account before implementing any treatment. Researchers have focused primarily on assessing the effectiveness of bone grafts rather than on patients' perceptio...

Under normal conditions, the oral cavity presents a perfect system of equilibrium between teeth, soft tissues and tongue. The equilibrium of soft tissues forms a closed capsular matrix, generating differences with the atmospheric environment. This difference is known as intraoral pressure. Negative intraoral pressure is fundamental to the stabiliza...

Background: The aim of this study was to describe the degree of curvature in distal roots in the first and second permanent mandibular molars in a Chilean patient sample. A cross-sectional descriptive study was conducted in which digital panoramic X-rays were analysed. Materials and methods: Examinations of patients under 18 years, with signs of...

The object of our study was to contribute to anatomical knowledge of this region with data on the prevalence, number and location of lingual foramina (LF) in dentate and edentate macerated mandibles from Brazilian individuals, differentiating them by sex and race. In this way we hope to help dental surgeons with their planning prior to implant plac...

Background: Morphological variations of the mandibular canal (MC) have been described in literature, so the clinician must be able to recognise them and adapt their treatment accordingly. The aim of this study was to determine the prevalence of morphological variations of the MC using digital panoramic radiographs (DPR) of Chilean patients. Mater...

Background: The morphometric characteristics of the mandibular canal (MC) may vary according to the characteristics of the population studied. Correct location of the MC is fundamental for the indication and planning of different dental treatments, and it is therefore essential to have clinical parameters indicating its approximate location. The a...

The maxillary second molar (2 MM) has the most complex root canal system, and a high percentage of treatment failures is due to the impossibility of locating, instrumenting and obturating the second mesiobuccal canal (MB2). The aim of this study was to describe in vivo the prevalence and location of the MB2 canal in the mesiobuccal root of the perm...

The objective of this study was to determine the prevalence of impacted maxillary canines and analyze variables associated with its retention in panoramic radiographs. Manual and Retrospective observational study of 16,835 records. A sample of 1,353 panoramic radiographs was obtained. The variables measured were canine angle, distance from the cani...

The aim of this study was to describe the degree and orientation of root curvature in mandibular premolars and to identify the radicular third in which the curvature originates, using digital panoramic radiographs and linear morphometry. We also aimed to detect the prevalence of excessive root curvatures or dilacerations. A cross-sectional study wa...

The buccal alveolar wall represents the most important structure to provide shape and volume of the alveolous following tooth extraction. The aim of the study was the evaluation of buccal alveolar bone structures following minimally invasive surgery. In 15 patients (3 male, 12 female), aged 20–67 years, 3 central incisors, 5 lateral incisors, and 7...

To evaluate the validity and reliability of the T-Scan®III sensors system by measuring force and time in sensels. In order to evaluate the validity, known forces were applied to 31 sensels selected at random of a T-Scan®III sensor. In order to evaluate the reliability, the existing agreement between two different sensors was measured. Both validity...

Although measuring bite force is an important indicator of the health of the masticatory system, few commercially available transducers have been validated for routine clinical use. T-Scan(®) III Occlusal Analysis System allows to record the bite force distribution, indicating its relative intensity and occlusal timing. Nevertheless, even fewer stu...

Introducción: El primer molar maxilar permanente es el diente que presenta mayor complejidad y variación morfológica, que se refleja en la más alta tasa de fracaso clínico. Las principales causas de su fracaso en el tratamiento endodóntico es la imposibilidad de localizar el canal mesiovestibular secundario y el desconocimiento de su morfología. El...

Introduction: Permanent maxillary first molar is the tooth that presents the most complex morphological variation, which is reflected in a higher rate of clinical failure. One of the main causes of endodontic treatment failure is the inability to locate the secondary mesiobuccal canal and the ignorance of their morphology. The aim of this study was...

The aim of this study was to compare the measures of maximum bite force (MBF) in elderly edentulous indigenous (Mapuche) and non-indigenous individuals with new complete dentures at two different measuring times. A sample of 100 elderly subjects was divided into two groups: 50 indigenous and 50 non-indigenous, each including 25 females and 25 males...

Objective To compare the maximum bite force (FMM), in two different measurement periods, of mapuche and non-mapuche elderly patients with both maxillary and mandibular Kennedy class I removable partial dentures. Patients and methods A total of 40 subjects with ages ranging between 60 and 80 years were divided into 2 groups according to their ethnic...

Mental foramen (MF) is an important anatomical reference during surgery and implants. In order to meet the detectability and MF position, and describe it with respect to its anatomical relations, we analyzed 215 conventional panoramic radiographs. Furthermore, the presence and extent of mandibular canal loop was determined. The MF was detected in 8...

The aim was to study the association between the presence of gingival recession (GR) and manual brushing features an adult population in southern Chile. A study on a probabilistic stratified random sample of 530 teeth with RG in 105 patients (75 women and 30 men), distributed in 3 age groups (18-34, 35-50 and 51-64 years), who used manual brushing...

Mental foramen (MF) is an important anatomical reference during surgery and implants. In order to meet the detectability and MF position, and describe it with respect to its anatomical relations, we analyzed 215 conventional panoramic radiographs. Furthermore, the presence and extent of mandibular canal loop was determined. The MF was detected in 8...

Facial asymmetry is relatively common, but it becomes a disease when condylar hyperplasia is involved. The purpose of this investigation was to describe and compare the morphological characteristics of hyperplastic condyles to their non-hyperplastic contralateral side. Fifteen subjects aged between 14 and 29 years with facial asymmetry and diagnose...

The images obtained by Cone -Beam Computed Tomography (CBCT) allow the determination of three-dimensional relationships of anatomical structures and overcome limitations of conventional radiography. The aim of this study was to describe the morphometric characteristics of the anterior maxilla and its relation to canine and premolars by CBCT exams....

The images obtained by Cone - Beam Computed Tomography (CBCT) allow the determination of three-dimensional relationships of anatomical structures and overcome limitations of conventional radiography. The aim of this study was to describe the morphometric characteristics of the anterior maxilla and its relation to canine and premolars by CBCT exams....

The aim of this study was to histologically evaluate the performance of demineralized bone matrix (DBM) when compared with a blood clot in addition to an occlusive barrier in the bone regeneration process for bone defects in a rabbit model. Prefabricated metallic capsules with 4.5 mm and 3.5 mm dimensions were placed in five adult rabbit skulls. At...

The aim of this research was to define the morphological characteristics in panoramic digital radiography of subjects with asymmetric facial deformities related to condylar hyperplasia. A transversal cohort study was designed for the analysis of 14 patients with this pathology, and points and lines for measurement were identified, in a comparative...

The aim of this research was to define the morphological characteristics in panoramic digital radiography of subjects with asymmetric facial deformities related to condylar hyperplasia. A transversal cohort study was designed for the analysis of 14 patients with this pathology, and points and lines for measurement were identified, in a comparative...

The position and volume of the face soft-tissue yield the necessity of a precise plan at the facial surgery time; the influence of the adipose tissue on these characteristics can be present. The aim of this study is to identify the volumetric and non-volumetric measures of anthropometrics facial points and his relationship with the Body Mass Index...

Facial asymmetry associated with condylar hyperplasia (CH) has been become the object of study in recent years. The aim of this study is to demonstrate the importance of analyzing the presence of CH in cases of facial asymmetry. Twenty-seven consecutive patients were studied without distinction of age or gender; all the patients consulted for treat...

Facial asymmetry is a functional and esthetic pathology that can be related to condylar hyperplasia; the aim of this research was to asses the condylar size in the facial asymmetry. Twelve subjects was studies with cone beam computed tomography; the analysis was realized in the software Pax Zenith, Vatech (Korea 2011), using 90 kV and 120 mA and wa...

The bone loss in the posterior area of the maxilla has been associated to the loss teeth and the maxillary sinus can be cause significant complications and challenge for rehabilitation with dental implants. The aim of this research was to identify the relationship between tooth loss and bone loss. Seventy panoramic radiographs of 70 patients were u...

Facial asymmetry is a functional and esthetic pathology that can be related to condylar hyperplasia; the aim of this research was to asses the condylar size in the facial asymmetry. Twelve subjects was studies with cone beam computed tomography; the analysis was realized in the software Pax Zenith, Vatech (Korea 2011), using 90 kV and 120 mA and wa...

The bone loss in the posterior area of the maxilla has been associated to the loss teeth and the maxillary sinus can be cause significant complications and challenge for rehabilitation with dental implants. The aim of this research was to identify the relationship between tooth loss and bone loss. Seventy panoramic radiographs of 70 patients were u...

Conventional surgical extraction of impacted mandibular third molars (M3M) requires a lateral flap reflection in conjunction with lateral bone removal for outward mobilization of the tooth. The aim of this report is to outline a novel inward fragmentation technique (IFT) in conjunction with an occlusal miniflap approach to reduce the amount of bone...

Aesthetics and facial harmony are directly related to self-esteem and perception individuals have of themselves. There is often a desire to make overall aesthetic changes through surgery in order to get a positive assessment of oneself. The aim of this study was to research the relationship between perception, self-esteem and desire for change; and...