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Search Results: 1 - 10 of 45494 matches for " Marco Antonio Scanavini Scanavini "
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Avalia o radiográfica do espa o disponível para os terceiros molares superiores
Francisco Alexandre Baptista da Silva,Marco Antonio Scanavini Scanavini,Danilo Furquim Siqueira
Odonto , 2007,
Abstract: A quantidade óssea no túber da maxila está intimamente ligada com a erup o dos terceiros molares superiores. O principal objetivo desta pesquisa é verificar o espa o disponível no arco para a erup o dos terceiros molares superiores. A amostra foi composta por 50 telerradiografias em norma lateral, com média de 15 anos de idade (varia o de12 a 18 anos). O método proposto avaliou a distancia da face distal dos segundos molares superiores até o fim da tuberosidade da maxila, que também coincide com o processo alveolar da maxila, assim sendo, teremos o espa o disponível para a erup o dos terceiros molares superiores. Pode-se observar que existe uma falta de espa o para a correta irrup o dos terceiros molares superiores, uma vez que o espa o disponível médio é de 6,18mm e o espa o requerido médio é de 9,42mm. A discrepancia média para a amostra estudada, no momento da obten o das telerradiografias em norma lateral foi negativa -3,24mm. A regi o do túber é pobre em espa o para erup o dos terceiros molares superiores.
A forma do arco dentário inferior na vis?o da literatura
Trivi?o, Tarcila;Siqueira, Danilo Furquim;Scanavini, Marco Antonio;
Revista Dental Press de Ortodontia e Ortopedia Facial , 2007, DOI: 10.1590/S1415-54192007000600008
Abstract: aim: the main purposes of this study were to analyze the literature related to a relevant clinic aspect, the dental arch form, emphasizing the importance of maintaining the original form in order to obtain stability after the orthodontic treatment, as well as to evaluate the methods used for establishing the dental arch form and the arch form diagrams proposed by many authors. results and conclusions: it was verified that there is some controversy regarding the indication of an ideal average form and the selection of an individualized form from diagrams which provide varied formats for the dental arch. however, some progress was observed in the methodologies applied in recent studies, which will possibly provide more accuracy in arch form determination in the near future.
Evaluation of the space available for eruption of maxillary second and third molars after distalization of maxillary first molars
Francisco Alexandre Baptista da Silva,Marco Antonio Scanavini
RSBO , 2010,
Abstract: Objective: The objective of this study was to evaluate cephalometrically the space available for eruption of maxillary second and third molars in the region of the maxillary tuberosity after distalization of maxillary permanent first molars.Material and methods: The sample consisted of 38 right lateral cephalograms obtained from 19 Brazilian patients,of Caucasian and African descent, with average age of 9 years and 5 months.Cephalograms were taken before and after distalization of maxillary permanent first molars. The space from the end of the maxillary tuberosity to the distal aspect of the maxillary permanent first molar was evaluated.Student’s t test was applied for the statistical analysis,and the correlation between space and angulation was analyzed by the Pearson correlation coefficient.Results and conclusion:The corresponding space between the distal aspect of maxillary permanent first molars and the end of the maxillary tuberosity, before and after distalization,is not enough for eruption of the maxillary second and third molars.The crowns revealed distal angulation before and after distalization.The correlation of angulation of crowns of maxillary second and third molars and the space for eruption revealed that the greater the distal angulation of crowns,the smaller will be the space available for eruption.
Sobreposi??es cefalométricas de Ricketts
Figueiredo, Márcio Antonio de;Siqueira, Danilo Furquim;Bommarito, Silvana;Scanavini, Marco Antonio;
Revista Dental Press de Ortodontia e Ortopedia Facial , 2005, DOI: 10.1590/S1415-54192005000300014
Abstract: the success or the failure of the orthodontic treatment accomplished in patients in the growth phase has been justified many times by the standard and the variability that this growth can present. understanding these current changes of the growth and separating them from the changes imposed by the orthodontic treatment is the objective of this work. the superimposition cefalometric method developed by ricketts will be used and applied to a patient with skeletal malocclusion class ii, first division, treated at the age of 9 years old and accompanied until the age of 18 years old. the mechanics used for the correction of the class ii was considered ideal since the obtained results were satisfactory, from the static point of view as well as the functional one. besides, it was observed that a clockwise rotation of the jaw didn't take place in spite of the use of a quad - helix, elastic of class ii and cervical headgear. another important discovery was the great growth of the jaw that occurred between the beginning (t1) and the end of the treatment (t2) of 12mm or 3,5mm/year.
Evaluation of the dental arch asymmetry in natural normal occlusion and Class II malocclusion individuals
Scanavini, Paulo Estev?o;Paranhos, Luiz Renato;Torres, Fernando César;Vasconcelos, Maria Helena Ferreira;Jóias, Renata Pilli;Scanavini, Marco Antonio;
Dental Press Journal of Orthodontics , 2012, DOI: 10.1590/S2176-94512012000100016
Abstract: objective: to verify the presence and degree of asymmetry of dental arches in brazilian individuals with natural normal occlusion and class ii, divisions 1 and 2 malocclusions. methods: the study evaluated the symmetry of the maxillary and mandibular dental arches of 180 pairs of dental casts, divided into: group i = 60 pairs of natural normal occlusion individuals; group ii = 60 pairs of class ii, division 1 malocclusion individuals; and group iii = 60 pairs of class ii, division 2 malocclusion individuals. a device was used to measure dental midline deviation and the canine tip in the dental arches (in degrees). it was also verified the distance of the upper canines from the palatal suture, intercanine distance, and anteroposterior upper and lower first molar position. results: dental arches of individuals from all groups presented asymmetry, regardless of the presence of malocclusion. group i showed a lower asymmetry degree in relation to groups ii and iii. the asymmetry in groups ii and iii was similar. conclusion: the dental arches of individuals with natural normal occlusion and with class ii, division 1 and division 2 malocclusions showed asymmetry. the asymmetry degree was higher in the mandibular dental arches than in the maxillary dental arches in all 3 evaluated groups.
Análise oclusal de pacientes com má-oclus o de classe ii, tratados com extra es de 4 pré-molares
Fernando Alcides José de Souza,Paula Rotoli Gregolin,Marco Antonio Scanavini,Savério Mandetta (in memoriam)
Odonto , 2008,
Abstract: Para determinar a estabilidade dos resultados oclusais, após tratamento ortod ntico, realizou-se um estudo comparativo do número de pontos de contato oclusais na posi o de máxima intercuspida o habitual em uma amostra composta por 14 pacientes leucodermas, sendo 9 do sexo feminino e 5 do sexo masculino, com má-oclus o de Classe II, divis o 1a de Angle, tratados ortodonticamente com a técnica de Edgewise, e extra o dos 4 primeiros pré-molares. Estes pontos foram registrados em dois tempos: T1 - ao final da fase de conten o superior e T2 - após um período médio de 5,2 anos. A contagem dos contatos oclusais foi realizada, separadamente, no arco superior e inferior, na regi o anterior e posterior. Depois da análise estatística, p de-se concluir que n o houve diferen a estatisticamente significante entre o número médio de contatos oclusais nos diferentes períodos estudados.
Assessment of changes in smile after rapid maxillary expansion
Carvalho, Ana Paula Morales Cobra de;Goldenberg, Fernanda Cavicchioli;Angelieri, Fernanda;Siqueira, Danilo Furquim;Bommarito, Silvana;Scanavini, Marco Antonio;Kanashiro, Lylian Kazumi;
Dental Press Journal of Orthodontics , 2012, DOI: 10.1590/S2176-94512012000500014
Abstract: introduction: this study evaluated changes in the smile characteristics of patients with maxillary constriction submitted to rapid maxillary expansion (rme). methods: the sample consisted of 81 extraoral photographs of maximum smile of 27 patients with mean age of 10 years, before expansion and 3 and 6 months after fixation of the expanding screw. the photographs were analyzed on the software cef x 2001, with achievement of the following measurements: transverse smile area, buccal corridors, exposure of maxillary incisors, gingival exposure of maxillary incisors, smile height, upper and lower lip thickness, smile symmetry and smile arch. statistical analysis was performed by analysis of variance (anova), at a significance level of 5%. results: rme promoted statistically significant increase in the transverse smile dimension and exposure of maxillary central and lateral incisors; maintenance of right and left side smile symmetry and of the lack of parallelism between the curvature of the maxillary incisal edges and lower lip border. conclusions: rme was beneficial for the smile esthetics with the increase of the transverse smile dimension and exposure of maxillary central and lateral incisors.
Avalia??o das altera??es dentárias na maxila em pacientes submetidos à expans?o rápida da maxila assistida cirurgicamente sem o envolvimento da sutura pterigomaxilar
Camara, Paulo Roberto Pelucio;Goldenberg, Fernanda C.;Goldenberg, Dov C.;Alonso, Nivaldo;Scanavini, Marco A.;
Revista Dental Press de Ortodontia e Ortopedia Facial , 2009, DOI: 10.1590/S1415-54192009000600013
Abstract: aim: to assess the changes to the superior dental arches, in the transversal direction, and the amount of inclinations in the support teeth of the hyrax expansion appliance in patients who underwent surgically assisted rapid maxillary expansion (sarme), as well as the effectiveness of the surgical technique used. the sample was composed of 34 pairs of cast models, of 17 patients - 6 males and 11 females. methods: the measurements were performed on cast models, by measuring the changes on the vertical and transversal planes. the surgical procedure used was the lateral osteotomy on maxillary walls with no involvement of the pterygoid blade, osteotomy of nasal spine on dental midline (anterior central incisors), chisel separation of palatine suture, and separation of the nasal septum. the activation was initiated on the third postoperative day, consisting of two activations, one in the morning and another at night. results: there were statistically significant expansions in the regions of canines, first and second premolars, first molars, and second molars; respectively, 6.03 mm, 9.82 mm, 8.66 mm, 9.72 mm, and 5.67 mm. the evaluation of the behavior of the support teeth of the expansion appliance regarding the inclination of the dental crowns has shown that an asymmetric vestibularization had taken place, because the values found for the first molars were 6.89o (right) and 9.56o (left); the values for the first premolars were 4.74o (left) and 3.26o (right); this last value was not statistically significant. conclusions: the surgical technique used in this research has been shown to be efficient to obtain maxillary transversal alterations, and there was dental-alveolar inclination of the support teeth of the expansion appliance.
Método para mensura??o das angula??es e inclina??es das coroas dentárias utilizando modelos de gesso
Zanelato, Adriano C. Trevisi;Maltagliati, Liliana ávila;Scanavini, Marco Ant?nio;Mandetta, Savério;
Revista Dental Press de Ortodontia e Ortopedia Facial , 2006, DOI: 10.1590/S1415-54192006000200009
Abstract: this present study aims to present the development of a device specially designed to measure the angulation and tipping of dental crowns. such device was used in a sample containing 60 subjects, with average age between 12 and 21 yeas of age from both genders. subjects presented with normal occlusion and had not undergone orthodontic treatment previously. thus, from this sample, the mean values for the angulation and tipping of dental crowns were established for brazilian subjects.
Características cefalométricas dos indivíduos Padr?o I
Reis, Sílvia Augusta Braga;Capelozza Filho, Leopoldino;Cardoso, Maurício de Almeida;Scanavini, Marco Ant?nio;
Revista Dental Press de Ortodontia e Ortopedia Facial , 2005, DOI: 10.1590/S1415-54192005000100008
Abstract: the aim of this study was to determine cephalometric characteristics of pattern i patients, to establish averages, and mainly, standard deviation references to be used comparatively with values of skeletally compromised cases. the sample was comprised by 30 white brazilian adults selected by morphologic facial analysis in lateral photographs. in the study of facial growth pattern, the palatine plane angle was 9,4°± 3,2°, while goniac angle was 121,4°± 5,3°, both with sexual dimorphism. for the mandibular plane angle, the value was 29,2°± 4,2°, without sexual dimorphism. the average values for total, lower, medium and posterior facial height were, respectively, 123,0mm± 8,3mm, 68,8mm± 6,6mm, 55,9mm± 3,5mm e 62,6mm± 4,7mm. for all those measures, feminine values were smaller then masculine ones. cephalometric position of maxillary and mandibular bones confirmed the skeletal balance of the sample. sna was 82,2° ± 2,9°, snb was 79,8° ± 2,5° and anb was 2,4° ± 1,4°, without sexual dimorphism. maxillary length was 95,2mm ± 5,7mm, while mandibular length was 124,2mm ± 8,2mm, with sexual dimorphism. upper and lower incisors were more protruded them those of literature samples. upper incisors were studied by 1.pp angle, and the average was 115,2° ± 5,5°, while the value for impa was 93,9° ± 5,7°.
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