- DDS, MSD, PhD Prof. Associado Faculdade de Odontologia de Araraquara Departamento de Clínica Infantil - OrtodontiaUniversidade Estadual Paulista - Unespedit
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The aim of this study was to evaluate enamel roughness, quality of the enamel surfaces and time duration comparing different orthodontic adhesive removal protocols. Premolars were used to test three adhesive removal methods ( = 20):... more
The aim of this study was to evaluate enamel roughness, quality of the enamel surfaces and time duration comparing different orthodontic adhesive removal protocols. Premolars were used to test three adhesive removal methods ( = 20): five-blade carbide bur, 30-blade carbide bur, and ultrasonic diamond bur. Bracket was bonded using Transbond XT adhesive. Roughness with different parameters was measured before bracket bonding and after adhesive remnants removal. Micromorphological analysis of enamel surface ( = 5) was performed by SEM images and categorized in enamel damage index-"perfect"; "satisfying"; "imperfect"; and "unacceptable". Time was measured in seconds. All removal methods caused increased roughness in relation to , , and parameters ( axis) comparing to healthy enamel surface. Enamel surface resulted from removal using five-blade burs was scored as satisfactory. Carbide bur groups decreased the roughness values of , , and parameters ...
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The objective of this research was to compare the effect single low-level laser therapy (LLLT) irradiation on pain perception in patients having fixed appliance treatment in the clinic of orthodontics. Sixty-two patients were recruited to... more
The objective of this research was to compare the effect single low-level laser therapy (LLLT) irradiation on pain perception in patients having fixed appliance treatment in the clinic of orthodontics. Sixty-two patients were recruited to participate in this randomized, double-blinded, placebo-controlled study. The patients were assigned to four groups: group I-laser on the right side; group II-placebo on the right side; group III-laser on the left side; group IV-placebo on the left. The laser or placebo was applied before separation, 24 and 48 h after separation of their first permanent molars in the lower arch. Just after the separation, the average of the pain for the placebo group was 1.6, significantly greater than the average of 1.1 registered for the laser group (p = 0.013). After 24 h and before the new irradiation, the values registered among the different groups did not show any differences. In relation to the gender, only after the first irradiation in placebo group, the ...
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The aim of this study was to evaluate dental and skeletal changes induced by the use of Herbst appliance compared to natural growth in young adults with Class II division I malocclusion with mandibular retrusion, by means of lateral... more
The aim of this study was to evaluate dental and skeletal changes induced by the use of Herbst appliance compared to natural growth in young adults with Class II division I malocclusion with mandibular retrusion, by means of lateral oblique radiographs. Forty-six subjects, I4 -18 years old, after pubertal growth peak, with Class II division I malocclusion were assessed. Subjects were divided into two groups: the Experimental group included 23 subjects treated with Metallic Splinted Herbst and the Control group included 23 subjects followed without treatment. The Experimental and Control groups were paired by sex and chronological age. Oblique lateral cephalometric radiographs of the left and the right side of the mandible before treatment (TI) and after 8 months' treatment (T2) were used to evaluate dental and skeletal changes. Statistical analysis was performed with Intra Class Correlation and Student t-test, according to the study hypothesis. The results showed that the applia...
An anterior open bite is a challenge to orthodontic treatment; it has a multifactorial etiology and a wide range of intervention options. Temporomandibular joint (TMJ) disorders are a risk factor for the development of malocclusions such... more
An anterior open bite is a challenge to orthodontic treatment; it has a multifactorial etiology and a wide range of intervention options. Temporomandibular joint (TMJ) disorders are a risk factor for the development of malocclusions such as the anterior open bite, especially in patients who have TMJ osteoarthritis with disc displacement. Articular disc repositioning surgery is an available option for treating this pathology, and it contributes to maintaining the condyles in a more stable position. The aim of this article was to report the case of a 20-year-old woman diagnosed with anterior open bite and TMJ osteoarthritis with bilateral disc displacement. The patient received both orthodontic treatment and TMJ disc repositioning surgery. Cone-beam computed tomography was used to create 3-dimensional models of the condyles with regional superposition, and assessment of bone remodeling was performed at different time intervals. Complete orthodontic and surgical treatment time was appr...
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The aim of this study was to perform a systematic review on the morphological characteristics of the skull base (flexion, anterior length and posterior length) and the concomitant development of malocclusions, by comparing differences in... more
The aim of this study was to perform a systematic review on the morphological characteristics of the skull base (flexion, anterior length and posterior length) and the concomitant development of malocclusions, by comparing differences in dimorphism, ethnicity and age. The articles were selected by means of electronic search on BBO, MEDLINE and LILACS databases from 1966 to 2016. A qualitative evaluation of the methodologies used on the articles was also performed. Although the literature on this topic is abundant, only 16 articles were selected for the present systematic review. The cranial base angle itself does not seem to play a significant role in the development of malocclusions. In fact, the cranial base angle is relatively stable at the ages of 5 to 15 years. A more obtuse angle at the skull base, in association or not with a greater anterior length of the cranial base, can contribute to the development of Class II division 1 malocclusions. On the other hand, a more acute ang...
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INTRODUÇÃO: as discrepâncias entre o tamanho mesiodistal dos dentes superiores e inferiores e seus efeitos sobre a oclusão têm sido relatados há muito tempo. O método proposto por Bolton para o diagnóstico de discrepância de tamanho... more
INTRODUÇÃO: as discrepâncias entre o tamanho mesiodistal dos dentes superiores e inferiores e seus efeitos sobre a oclusão têm sido relatados há muito tempo. O método proposto por Bolton para o diagnóstico de discrepância de tamanho dentário é, inegavelmente, um dos mais difundidos no meio ortodôntico, devido à sua relativa simplicidade. Entretanto, a aplicação desse método requer cálculos matemáticos e o uso de tabelas que, muitas vezes, inviabilizam a sua utilização durante a avaliação clínica. OBJETIVO: avaliar o método proposto por Wolford, que não requer o uso de tabelas, como alternativa ao método tradicional de Bolton. MÉTODOS: a amostra foi composta por 90 pares de modelos dentários iniciais de pacientes adultos, com diferentes más oclusões. A proporção entre os dentes inferiores e superiores foi calculada para cada paciente, resultando na obtenção de dois índices (a razão total e a razão anterior). Os índices foram obtidos por meio do método originalmente proposto por Bolto...
Background: Tipped lower molar over edentulous space is very common in orthodontics practice when adults seek treatment. The segmented arch technique features a predictable force system that provides a controlled release of force that can... more
Background: Tipped lower molar over edentulous space is very common in orthodontics practice when adults seek treatment. The segmented arch technique features a predictable force system that provides a controlled release of force that can produce light and continuous tooth movement. Case Description: A female adult patient, who lost a permanent lower first molar, needed correction of the position of her permanent first molar place. Instead of making space for rehabilitation, it was closed after second molar uprighting and a balanced interdigitation was created without prosthetics. The patient was successfully treated with segmented arch technique using root correction spring activated with geometry VI to promote uprighting of a tipped molar and Niti spring coil to promote space closure. Practical Implications: Segmented arch technique is known to provide predictable light and continuous forces, which is very much indicated in adult treatment. There are several things to consider whe...
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RESUMO A maneira pela qual a face cresce é muito importante para o diagnóstico, planejamento e tratamento ortodôntico. Avaliando essa forma de crescimento, pode-se ter o conhecimento das possibilidades e limitações do caso e precisar a... more
RESUMO A maneira pela qual a face cresce é muito importante para o diagnóstico, planejamento e tratamento ortodôntico. Avaliando essa forma de crescimento, pode-se ter o conhecimento das possibilidades e limitações do caso e precisar a melhor época para o ...
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Resumo: O objetivo deste trabalho foi avaliar a prevalência das relaçöes inter-arcos, regiäo posterior, no sentido transversal (cruzamento posterior) e ântero-posterior (plano terminal de segundos molares deciduos, relaçäo de caninos... more
Resumo: O objetivo deste trabalho foi avaliar a prevalência das relaçöes inter-arcos, regiäo posterior, no sentido transversal (cruzamento posterior) e ântero-posterior (plano terminal de segundos molares deciduos, relaçäo de caninos deciduos e/ou permanentes e ...
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Objective: Evaluate through computed tomography cone beam (CBCT) transversal effect of the oropharynx (O) and nasopharynx (N) in patients with Class II division 1, treated with Herbst appliance. Method: Were selected 30 tomographic images... more
Objective: Evaluate through computed tomography cone beam (CBCT) transversal effect of the oropharynx (O) and nasopharynx (N) in patients with Class II division 1, treated with Herbst appliance. Method: Were selected 30 tomographic images of 15 individuals (initial age of 15.7 years ± 1.7). The CBCT images were taken before (T1) and after (T2) eigth months of treatment with Herbst appliance, and using Dolphin 3D software. Patients meet the following inclusion criteria (1.-Class II Division 1 malocclusion, mandibular retrusion associated. 2.- permanent dentition with the exception of third molars. 3 .- No severe crowding. 4 .- Absence of cross problems. 5 .- Overjet greater than 5 mm and less than 7 mm. 6 .- Period pubertal after growth spurt, analyzed with hand-wrist radiographs). We measured the maximum area in transverse sections in the N and O. These areas were measured by two investigators (S and K). Statistical analysis was performed in two steps, first, to confirm the reliabil...
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Optimal facial esthetics is one of the objectives in orthodontic treatment and an important issue in modern society. In this context, orthodontic treatment permits individuals with dental malpositions to achieve improved dentofacial... more
Optimal facial esthetics is one of the objectives in orthodontic treatment and an important issue in modern society. In this context, orthodontic treatment permits individuals with dental malpositions to achieve improved dentofacial esthetics. To reach this result, the orthodontist needs to recognize the characteristics considered normal and pleasant in dental arches and smiles. The objective of this article is to review and discuss criterion adopted by dental literature to technically analyze the smile, such as dental midline, smile line, dental exposure, negative space, dental proportion, and symmetry. This article proposes a way to visualize an ideal smile for each patient.
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The purpose of this study was to measure and verify the esthetic influence of the bilateral spaces between maxillary teeth and lip corners, called negative space (NS), during smile. The sample was comprised of 60 smile photographs... more
The purpose of this study was to measure and verify the esthetic influence of the bilateral spaces between maxillary teeth and lip corners, called negative space (NS), during smile. The sample was comprised of 60 smile photographs obtained from 60 individuals (30 men and 30 women) aged 18 to 25 years old. Two orthodontists and two lay people evaluated these pictures regarding esthetics by a visual analogue scale. In each picture, the right and left NS were measured in millimeters and in proportion to the smile width (SW). Data were analyzed for statistical significance (P = .05). The mean NS of the sample was 6.68 +/- 1.99 mm, and the NS proportion in relation to the SW was 9.6 +/- 2.56%, for both sides of the arch. No significant asymmetries were observed between the right and left sides. The NS was significantly larger in men than in women when measured in millimeters (P = .028) (7.08 +/- 2.24 mm in men vs 6.28 +/- 1.62 mm in women), but the NS proportion to the SW was similar (9....
Research Interests: Dentistry, Smiling, Adolescent, Cephalometry, Humans, and 9 moreFemale, Male, LIP, Adult, Sex Factors, Dental Esthetics, Angle, Negative Space, and Cheek
The soft tissue changes after the extraction of maxillary first premolars and subsequent anterior tooth retraction were evaluated for 16 Class II, division 1 patients. Pre- and posttreatment lateral head cephalograms were evaluated using... more
The soft tissue changes after the extraction of maxillary first premolars and subsequent anterior tooth retraction were evaluated for 16 Class II, division 1 patients. Pre- and posttreatment lateral head cephalograms were evaluated using superimpositions on Björk-type metallic implants in the maxilla. The patient sample was divided into group I patients, those who did exhibit lip seal at rest in the pretreatment cephalogram and group II patients, those who did not exhibit lip seal at rest in the pretreatment cephalogram. Upper incisor retraction was followed by a similar ratio of upper lip retraction in both the lip seal and nonsealed groups (1:0.75 and 1:0.70 mean ratios, respectively). However, those without lip seal did demonstrate more retraction at stomion (USt). The final upper lip position (Ls) was reasonably correlated with retraction of the cervical maxillary incisor point (cU1) with determination coefficients of 63.6% in the lip sealed and 68.5% in the lip incompetent grou...
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The pseudo-Class III can be defined as a functional reflex of an anterior positioning of the mandible, an acquired muscular position that simulates a mesiocclusion. The diagnosis and treatment plan of this condition must be based on a... more
The pseudo-Class III can be defined as a functional reflex of an anterior positioning of the mandible, an acquired muscular position that simulates a mesiocclusion. The diagnosis and treatment plan of this condition must be based on a cephalometric evaluation that provides information about the relative contributions of the skeletal and dental components to the malocclusion. There is still great controversies about when is the best moment to start the Class III treatment. The purpose of this article is to describe a case report in which a Class III patient was successfully treated with reverse traction.
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Research Interests: Humans and Hypertrophy
The aim of this in vitro study was to assess the effect of tip diameter, nozzle distance, and application time of an air-abrasion system for cavity preparation on the enamel of primary teeth. Forty exfoliated primary teeth were air... more
The aim of this in vitro study was to assess the effect of tip diameter, nozzle distance, and application time of an air-abrasion system for cavity preparation on the enamel of primary teeth. Forty exfoliated primary teeth were air abraded with a microabrasion machine used with a handpiece with an 80-degree-angle nozzle, 50-micron abrasive particle size, and 80-psi air pressure. The effects of 0.38- or 0.48-mm inner tip diameter, 2- or 5-mm distance from tip to tooth surface, and 15 or 30 seconds of application time on cutting efficiency were evaluated. Cutting width and depth were analyzed and measured from scanning electron micrographs. Statistical analysis revealed that the width of the cuts was significantly greater when the tip distance was increased. Significantly deeper cavities were produced by a tip with a 0.48-mm inner diameter. The application time did not influence the cuts. The cutting patterns found in this study suggest that precise removal of enamel in primary teeth ...
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To evaluate, via occlusal radiographs, transversal alterations that result from rapid maxillary expansion with the Hyrax appliance. The sample consisted of 14 children of both genders, in mixed dentition, with unilateral or bilateral... more
To evaluate, via occlusal radiographs, transversal alterations that result from rapid maxillary expansion with the Hyrax appliance. The sample consisted of 14 children of both genders, in mixed dentition, with unilateral or bilateral posterior crossbite. Occlusal radiographs were taken at the beginning and at the end of maxillary expansion. The following variables were measured: intermolar distance, interincisal distance, incisor interapex distance, interbase distance, interarm distance, and interincisor inclination. The interapex and interbase distances had their radiographic amplification corrected. A mean opening of 7.65 mm of the expansion screw resulted in an increase of the intermolar distance of 7.40 mm, progressively smaller increases of the interarm distance of the appliance of 6.6 mm, and of the incisor interapex distance of 5.5 mm. The distance between the maxillary incisors increased 1.9 mm, which indicated more posterior than anterior expansion. In addition, some buccal...
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To assess the influence of air abrasion tips and system operation modes on enamel cutting. Forty bovine teeth were abraded with the air abrasion system Mach 4.1 for 10 and 15 seconds, employing conventional and sonic tips of 0.45-mm inner... more
To assess the influence of air abrasion tips and system operation modes on enamel cutting. Forty bovine teeth were abraded with the air abrasion system Mach 4.1 for 10 and 15 seconds, employing conventional and sonic tips of 0.45-mm inner diameter and a 90° angle, and 27.5-μm aluminum oxide at 5.51 bar air pressure in continuous and pulsed modes. The width and depth of the resulting cuts were measured in SEM. The multivariate analysis of variances revealed that, compared to the sonic tip, the conventional tip produced shallower cuts independent of the operation mode and the application period. The cutting patterns observed in this study suggest that the pulsed mode produced deeper cuts when both the conventional and sonic tips were used, and that the sonic tip cut more dental tissue than the conventional one.
A intrusão de molares tem sido almejada em Ortodontia há muito tempo, principalmente nos casos de mordida aberta anterior associada a padrão vertical de crescimento. As técnicas ortodônticas utilizadas para o tratamento desta máoclusão... more
A intrusão de molares tem sido almejada em Ortodontia há muito tempo, principalmente nos casos de mordida aberta anterior associada a padrão vertical de crescimento. As técnicas ortodônticas utilizadas para o tratamento desta máoclusão utilizam-se de forças intrusivas ...
Resumo: No presente trabalho os autores relatam um caso clínico de uma criança com sete anos de idade apresentando o incisivo central superior esquerdo incluso e deslocado de sua posiçäo normal de tal forma a apresentar uma angulaçäo em... more
Resumo: No presente trabalho os autores relatam um caso clínico de uma criança com sete anos de idade apresentando o incisivo central superior esquerdo incluso e deslocado de sua posiçäo normal de tal forma a apresentar uma angulaçäo em seu longo eixo ...