Thesis (doctoral)--Lund University, 1997. / Added t.p. with thesis statement inserted.

Rede -- Nijmegen, 1982.

Thesis (doctoral)--Lund University, 1997. / Added t.p. with thesis statement inserted.

Thesis - University of Amsterdam. / Summary in Dutch. Bibliography : pp 94-98

Made available in DSpace on 2014-06-11T19:28:56Z (GMT). No. of bitstreams: 0 Previous issue date: 2003-02-10Bitstream added on 2014-06-13T18:58:06Z : No. of bitstreams: 1 souza_rf_me_arafo.pdf: 693835 bytes, checksum: b0a0195497e4cb6ea6e019867bbc47e6 (MD5) / Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) / Os sons sibilantes, como o /s/, vêm sido usados para avaliar a determinação da dimensão vertical e posicionamento de dentes artificiais. Apesar desse som poder ser destorcido por próteses totais, algum grau de adaptação é esperado. O propósito deste estudo foi avaliar o espaço de pronúncia do /s/ (EPS) em indivíduos dentados e edentados e relacioná-lo aos trespasses incisais e espaço funcional livre (EFL). Dois grupos foram recrutados: I- composto por 25 indivíduos do gênero masculino e 36 do gênero feminino (n = 61) com média etária de 30,26 l 12,71 anos; e II- 10 indivíduos do gênero masculino e 23 do gênero feminino (n = 33) com média etária de 59,18 l 10,00 anos. A análise foi realizada empregando o instrumento cinesiográfico K6 I Diagnostic System (Myotronics Research, Inc., Seattle, WA, EUA) que fornece registros tridimensionais dos movimentos mandibulares. Os indivíduos foram avaliados pela pronúncia da palavra seis e as posições mandibulares para o som /s/ em relação à máxima intercuspidação foram registradas. Os trespasses vertical e horizontal, bem como o EFL, também foram mensurados. Os resultados indicaram movimento mandibular protrusivo durante a produção do som /s/ para quase todos os indivíduos do grupo I, mas no grupo II houve uma predominância de retrusão. Idade e gênero não influenciaram o EPS para os dois grupos. Foi encontrada correlação significativa entre o EPS do /s/ e ambos os trespasses para o grupo I, mas não para o grupo II. Houve uma fraca correlação entre os EFL e EPS para o grupo I, mas uma correlação relativamente forte para o grupo II. Esses dados sugerem que o tratamento com próteses totais influenciou a movimentação mandibular durante a produção do /s/. Dessa forma, pode se deduzir que mudanças anatômicas seguindo o procedimento protético produziu uma adaptação funcional nítida que foi... / The sibilant sounds, such as /s/, have been used as evaluation in determining vertical dimension and placement of artificial teeth. Although it can be distorted by complete dentures, some degree of adaptation can be expected. The aim of this study was to evaluate the /s/ speaking space (SSP) in dentate and edentate subjects, and relate it to the incisal overlaps and freeway space (FS). Two groups were recruited, as follows: I- composed by 25 male and 36 female dentate subjects (n = 61), with mean age of 30,26 l 12,71 years; and II- 10 male and 23 female dentate subjects (n = 33), with mean age of 59,18 l 10,00 years. The kinesiographic equipment K6 I Diagnostic System (Myotronics Research, Inc., Seattle, WA, USA) was used for the assessment, providing three-dimensional records of mandibular movements. Each subject was tested by pronouncing the word 'seis' and the mandibular positions for /s/ sound, in relation to maximal intercuspal position, were recorded. The vertical and horizontal overlaps, and also the freeway space, were also measured. The results showed protusive mandibular movement /s/ production for almost all subjects in group I, but in group II there was a predominance of retrusion. Age and gender didn't influence the measured speaking space for the two groups. Significant correlation was found between SSP and both overlaps for group I, but not for group II. There was a slight correlation between FS and SSP for group I, but a relatively strong correlation for group II. It was suggested that the complete denture treatment influenced the mandibular motion during /s/ production. Also, it can be deduced that anatomic changes following the prosthetic procedure strongly produced functional adaptation that was common for both rest and /s/ speaking positions of the mandible.

PURPOSE: To determine the prevalence of Sleep Disturbances (SD) in children and to evaluate the correlation between dental classification and airway dimensions. METHODS: Children between 3 – 18 years at the Boston University Pediatric Oral Healthcare Center in Boston, Massachusetts were recruited for this study. Based on parents’ responses in a brief sleep-screening questionnaire, cases were identified as children with SD and controls were those without. Another detailed questionnaire was used to collect information on demographics and sleep patterns. Clinical and upper airway examinations were conducted using Eccovision Acoustic Rhinometer (AR) and Acoustic Pharyngometer (AP). Statistical differences in upper airway measurements by type of dental occlusion were evaluated. RESULTS: Among 281 children, the prevalence of SD was 38%. Upper airway measurements among 176 participants using AP showed significantly higher pharyngeal Minimum Cross-Sectional Area (MCA) for class III dental occlusion compared to class I (P=.036) in children with SD. Statistically significant differences in MCA, Airway Volume (AV), and minimum distance to MCA by type of dental occlusion were mainly observed among children with SD (P<.05). CONCLUSIONS: The results highlight a possible correlation between nasal and pharyngeal airway dimensions and dental classification among children with SD. Further analysis that include radiological examinations may help in confirming these findings.

Made available in DSpace on 2015-12-10T14:24:14Z (GMT). No. of bitstreams: 0 Previous issue date: 2002-11-08. Added 1 bitstream(s) on 2015-12-10T14:30:24Z : No. of bitstreams: 1 000183159.pdf: 2019517 bytes, checksum: e590f9e3eecc34039e1651d413e47963 (MD5) / Este estudo constou da análise do ângulo nasolabial e sua divisão em superior e inferior, por uma linha paralela ao Plano de Frankfort passando pelo ponto subnasal. Foram utilizadas 120 radiografias cefalométricas norma lateral, em pacientes portadores de má-oclusão Classe II e Classe III de Angle, 60 de cada grupo, 30 do sexo feminino e 30 do sexo masculino, na faixa etária de 13 a 43 anos, com média de idade de 241,03±77,78 meses. Os resultados obtidos foram para o ângulo nasolabial média para toda amostra de 106,42°±9,87, sendo para Classe lI média de 109,37±9,10 e para Classe III de 103,48±9,79, no sexo masculino média de 107,02±10,32 e no sexo feminino de 105,83±9,44. O ângulo superior apresentou média para toda amostra de 22,092°±8,831°, sendo para Classe II a média de 26,48±8,68 e para a Classe III de 17,708±6,543, no sexo masculino média de 22,40±8,85 e no sexo feminino de 21,78±8,87. Para o ângulo inferior média de toda amostra de 84,429°±8,717°, sendo para Classe II média de 82,93±7,99 e para Classe III média de 85,93±9,21, no sexo masculino de 84,63±_9,21 1e no sexo feminino de 84,23±8,26. Conclui-se para o ângulo nasolabial e para o ângulo superior, os indivíduos Classe II diferem dos indivíduos da Classe III (Classe II maior que Classe III), com diferença estatisticamente significante; para os ângulos nasolabial e superior não houve diferença estatisticamente significante para sexo e interação entre sexo com má-oclusão; para o ângulo inferior não diferem estatisticamente os dados para má-oclusão, sexo e suas interações / This study consisted of the analysis nasolabial angle and its division in superior and inferior angle, by a parallel line to the Frankfort Plane, pass on the point Subnasal. 120 cephalometric x-rays lateral norm were used, from patients bearers of Class II and Class llI of Angle occlusion, with 60 patient each group, 30 female and 30 male, age group from 13 to 43 years, with age average of 241,03+77,78 months. The results obtained were to the nasolabial angle the general average of 106,42'+9,87º being for the Class II the average of 109,37+9,10 and for the Class III of 103,48+9, 79, for male average of 107,02+ 10,32 and for female of 105,83+9,44. The superior angle presented average of 22,092°+8,831º, for Class II the average of 26,48+8,68 and for Class lIl of 17,708+6,543,for male average of 22,40+8,85 and for female of 21,78+8,87. For inferior angle avarage of 84,429º+8,717, for Class II average of 82,93+7,99 and for Class lIl average of 85,93+9,21, for male of 84,63+9,21 and for female of 84,23+8,26. It was concluded for nasolabial angle and for superior angle, the individuals Class II differ from individuals Class III (Class III larger than Class lII), with statistically significant difference; for nasolabial angle and for superior angle without estatistically significant difference for sex and interaction among sex with occlusion; for the inferior angle without estatistically signiflcant difference the data for occlusion, sex and their interactions

Made available in DSpace on 2014-06-11T19:33:23Z (GMT). No. of bitstreams: 0 Previous issue date: 2011-08-19Bitstream added on 2014-06-13T18:45:01Z : No. of bitstreams: 1 suguino_r_dr_araca.pdf: 341170 bytes, checksum: 4278a0daf45d9137f2fea8c28ea5f9ad (MD5) / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / O objetivo do presente estudo foi avaliar a presença da inclinação dentária compensatória dos dentes anteriores superiores e inferiores em indivíduos com má oclusão do Padrão III e Padrão I não submetidos ao tratamento ortopédico e ou ortodôntico prévio. A seleção da amostra foi realizada a partir dos cursos de pós graduação e ou clínicas de Ortodontia nas cidades de Maringá – Pr e Blumenau – SC, de indivíduos que buscavam o tratamento ortodôntico pela primeira vez. Os indivíduos foram selecionados morfologicamente com base na classificação proposta por Capelozza Filho (2004) em Padrão I e Padrão III. Outros critérios de inclusão na amostra foram: ausência de tratamento ortopédico e ou ortodôntico prévio; dentadura permanente completa (com exceção dos terceiros molares); indivíduos com crescimento craniofacial finalizado e ausência de reabilitações protéticas. Vinte e oito indivíduos de ambos os gêneros foram selecionados e divididos em dois grupos: Grupo 1 – Padrão I (n=14) e Grupo 2 – Padrão III (n=14), com idade entre 17 anos e 1 mês a 35 anos e 3 meses. As imagens tomográficas foram obtidas por meio do tomógrafo i-CAT (Imaging Science International, Pennsylvania, EUA) e para a mensuração das inclinações dentárias utilizou-se o software Dolphin Imaging 3D (v 11.0, Dolphin Imaging, Chatsworth, Califórnia, EUA). Após a coleta dos dados e aplicação dos testes estatísticos observou-se a presença de compensações dentárias nos indivíduos Padrão III, expressa pela inclinação vestibular dos incisivos superiores e inclinação lingual dos inferiores. Além disso, os caninos também acompanharam essa tendência de compensação dos incisivos superiores e inferiores / The aim of the present study was to assess compensatory tooth inclination in the upper and lower arches in individuals with Pattern III and Pattern I malocclusion having undergone no previous orthopedic or orthodontic treatment. The sample selection was carried out at postgraduate courses and orthodontic clinics in the cities of Maringá (state of Paraná) and Blumenau (state of Santa Catarina), Brazil, with the recruitment of individuals seeking orthodontic treatment for the first time. The individuals were selected morphologically (Patterns I and III) based on the classification proposed by Capelozza Filho (2004). The following were the additional inclusion criteria: absence of previous orthopedic or orthodontic treatment; complete permanent dentition (with exception of third molars); finalized craniofacial growth; and absence of dental prostheses. Twenty-eight male and female individuals (age range: 17 years one month to 35 years three months) were divided into two groups: Group 1 – Pattern I (n=14) and Group 2 – Pattern III (n=14). Tomographic images were obtained using the i-CAT dental imaging system (Imaging Science International, Pennsylvania, USA). The Dolphin Imaging 3D program (v 11.0, Dolphin Imaging, Chatsworth, California, USA) was used for measuring tooth inclinations. After the data acquisition and application of the statistical tests, compensations were observed in the individuals with Pattern III malocclusion, as expressed by the vestibular inclination of the upper incisors and the lingual inclination of the lower incisors. The canines did not accompany this tendency of compensation among the upper and lower incisors

Made available in DSpace on 2015-01-26T13:21:25Z (GMT). No. of bitstreams: 0 Previous issue date: 1993-11-18Bitstream added on 2015-01-26T13:30:31Z : No. of bitstreams: 1 000024638.pdf: 2112113 bytes, checksum: 3c5112f25048b73388671cdb4f3e11dc (MD5) / Foram avaliados 22 adultos portadores de fissuras labiopalatais, através de anamnese, exame clínico e radiografias transcranianas da articulação temporomandibular, com o intuito de observar a oclusão e correlacioná-la ccom os achados radiográficos. Os dados obtidos permitiram concluir que: 72,8% dos pacientes apresentavam, pelo menos, um sinal ou sintoma de disfunção craniomandibular (DCM); embora a condição oclusal se apresentasse severamente comprometida a maioria desses sinais ou sintomas era suave; a maior frequência dos sinais ou sintomas ocorreram no sexo feminino; na avaliação radiográfica, todos os pacientes assintomáticos apresentavam os dois côndilos com contorno normal, e todos os que apresentavam alteração de contorno, possuíam pelo menos um sinal ou sintoma de DCM; a posição centrada bilateral dos côndilos na fossa mandibular, não garante a ausência de sinais e sintomas de DCM; alguns pacientes com côndilos posicionados bilateralmente, para posterior ou, para caudal ou ainda, assimétricos, não apresentavam sinais ou sintomas de DCM; os achados radiográficos devem ser correlacionados com os achados clínicos; não foi observado um número significativo de pacientes com quadro clínico de DCM de origem oclusal / Anamnesis, clinical examinations and temporomandibular joint transcraneal radiographs for 22 adults with cleft lip and palate were carried out in order to evaluate the occlusion and correlate it with radographic findings. The conclusions were: 72.8% of the patients have at least one sign or symptom of craniomandibular disorders (CMD); although the occlusal conditions were severely altered, most of the signs and symptoms were classified as mild; the greater frequency of the signs and symptoms occurred among women; in the radiographic evaluation, all of the assymptomatic patients had both condyles with normal contour and all of the patients with altered contour had at least one sign or symptom; the bilateral centered position of the condyles in the fossa e did not warrant the absence of signs and symptoms; some patients with bilateral condyles positioned posteriorly or caudally or even assimetrically, did not present signs and symptoms of dysfunction; the radiographic findings should be correlated with clinical findings; and a great number of patients were not observed with clinical board of C:MD caused by the occlusion. Key words: Radiography; temporomandibular joint; temporomandibular joint syndrome; cleft palate; dental occlusion

abstract: Tessellation and Screen-Space Ambient Occlusion are algorithms which have been widely-used in real-time rendering in the past decade. They aim to enhance the details of the mesh, cast better shadow effects and improve the quality of the rendered images in real time. WebGL is a web-based graphics library derived from OpenGL ES used for rendering in web applications. It is relatively new and has been rapidly evolving, this has resulted in it supporting a subset of rendering features normally supported by desktop applications. In this thesis, the research is focusing on evaluating Curved PN-Triangles tessellation with Screen Space Ambient Occlusion (SSAO), Horizon-Based Ambient Occlusion (HBAO) and Horizon-Based Ambient Occlusion Plus (HBAO+) in WebGL-based real-time application and comparing its performance to desktop based application and to discuss the capabilities, limitations and bottlenecks of WebGL 1.0. / Dissertation/Thesis / WebGL Program / OpenGL Program / Masters Thesis Computer Science 2017