Submitted by PPG Odontologia (odontologia-pg@pucrs.br) on 2017-07-21T12:36:20Z No. of bitstreams: 1 BERNARDO_ALIEVI_CAMARGO_TES.pdf: 559988 bytes, checksum: 40cdf084884d3c3ac79d29f4a2c50aa7 (MD5) / Rejected by Caroline Xavier (caroline.xavier@pucrs.br), reason: Devolvido devido a diferen?a de entre o t?tulo da capa/folha de rosto, e o t?tulo da ficha catalogr?fica. on 2017-07-28T20:26:46Z (GMT) / Submitted by PPG Odontologia (odontologia-pg@pucrs.br) on 2017-08-10T16:44:36Z No. of bitstreams: 1 BERNARDO_ALIEVI_CAMARGO_TES.pdf: 1292617 bytes, checksum: 385bbcc10f09c8db9f890c3f549d927e (MD5) / Approved for entry into archive by Caroline Xavier (caroline.xavier@pucrs.br) on 2017-08-11T21:10:19Z (GMT) No. of bitstreams: 1 BERNARDO_ALIEVI_CAMARGO_TES.pdf: 1292617 bytes, checksum: 385bbcc10f09c8db9f890c3f549d927e (MD5) / Made available in DSpace on 2017-08-11T21:12:31Z (GMT). No. of bitstreams: 1 BERNARDO_ALIEVI_CAMARGO_TES.pdf: 1292617 bytes, checksum: 385bbcc10f09c8db9f890c3f549d927e (MD5) Previous issue date: 2017-05-11 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / The objectives of this study was to evaluate the marginal bone loss in distal implants adjacent to the prosthetic cantilever in complete fixed complete dentures implantossuported (FCDIs) and the possible correlation of bone loss with prosthetic cantilever extension and mesio-distal inclination of the distal implant. Thirty patients (9 men; 21 women) (N=62 distal implants) were followed, with 25 in maxilla and 37 in the mand?ble, at the PUCRS college of dentistry, after 1 and 3 years of prosthesis installation. The prosthetic cantilever measurement was performed during the treatment rehabilitation and the mesio-distal inclination of the most distal implants was obtained with computed tomography (CBCT), intraoral digital radiographs of the distal implants were obtained with customized devices at baseline, 1 and 3 years after prostheses installation. The mean bone loss after 1 year was 0,23?0,36mm after 1 and 3 years was 0,28?0,41mm and after 3 years was 0,35?0,49mm, the mean cantilever extension was 9.91?5.98 and the mean inclination of the implants was 8.68?5.97 in the mesial and 6.46?5.58 in the distal side. There was no statistical correlation between marginal bone loss, cantilever extension and mesiodistal inclination of the most distal implant, after one year of follow-up, where the data were analyzed using Spearman's correlation coefficient (?=5%). It can be concluded that the extension of the distal cantilever and the mesio-distal inclination of the implant in FCDIs not showed relation with marginal bone loss in the most distal implant adjacent to the cantilever. / Este estudo tem como objetivos avaliar a perda ?ssea marginal em implantes distais adjacentes ao cantilever prot?tico em pr?teses totais fixas implantossuportadas (PTFIs) e a poss?vel correla??o da perda ?ssea com extens?o de cantilever prot?tico e inclina??o m?sio-distal do implante distal. Foram acompanhados 30 pacientes (9 homens; 21 mulheres) com 62 implantes distais, sendo 25 na maxila e 37 na mand?bula, colocados na Faculdade de Odontologia da PUCRS, ap?s 1 e 3 anos da sua instala??o da pr?tese. A medi??o do cantilever prot?tico foi realizada durante o tratamento reabilitador e a inclina??o m?sio-distal dos implantes foi obtida com tomografias computadorizadas (CBCT). Radiografias intrabucais digitais dos implantes mais distais foram obtidas com posicionadores customizados ap?s a instala??o das pr?teses (baseline), 1 e 3 anos ap?s o t?rmino do tratamento. A perda ?ssea m?dia ap?s 1 ano foi de 0,23?0,36mm, entre o primeiro e terceiro ano foi 0,28?0,41mm e acumulada durante 3 anos foi 0,35?0,49mm, a extens?o de cantilever m?dia foi 9,91?5,98mm e a inclina??o m?dia dos implantes foi 8,68?5,97 na mesial e 6,46?5,58 na distal. N?o houve correla??o estat?stica entre perda ?ssea marginal, extens?o de cantilever prot?tico e inclina??o m?sio-distal do implante mais distal, durante o per?odo de acompanhamento, onde os dados foram analisados com coeficiente de correla??o de Spearman (? = 5%). Pode-se concluir que a extens?o do cantilever para distal e a inclina??o m?sio-distal dos implantes distais em PTFIs n?o apresentaram rela??o com a perda ?ssea marginal do implante mais distal, adjacente ao cantilever prot?tico.

Submitted by PPG Odontologia (odontologia-pg@pucrs.br) on 2018-03-28T17:43:23Z No. of bitstreams: 1 ROBERTA_LIMEIRA_FULGINITI_DIS.pdf: 824780 bytes, checksum: cdd50474d9d72a6f2df648cd97299b29 (MD5) / Approved for entry into archive by Tatiana Lopes (tatiana.lopes@pucrs.br) on 2018-04-12T11:38:51Z (GMT) No. of bitstreams: 1 ROBERTA_LIMEIRA_FULGINITI_DIS.pdf: 824780 bytes, checksum: cdd50474d9d72a6f2df648cd97299b29 (MD5) / Made available in DSpace on 2018-04-12T11:42:43Z (GMT). No. of bitstreams: 1 ROBERTA_LIMEIRA_FULGINITI_DIS.pdf: 824780 bytes, checksum: cdd50474d9d72a6f2df648cd97299b29 (MD5) Previous issue date: 2016-11-30 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / The purpose of this study was to evaluate the influence of Co-Cr dental casting alloys presenting distinct melting ranges for compound casting technique, with lower and higher melting temperature, on the marginal adaptation of prefabricated cast-to implant cylinders for implant support prosthesis. Two cobalt-chromium base metal alloys were cast to prefabricated Co-Cr cast-to implant cylinders. The cylinders were placed in the abutments and mounted in epoxy resin. Three groups were formed according with base alloy. Group 1: Cylinder as manufactured (Control); Group 2: lower melting temperature alloy; Group 3: higher melting temperature alloy. The specimens were ground to their central portion longitudinally by a surface grinding machine, polished and evaluated by optical and scanning electron microscopy. The images were analyzed and the misfit areas between the cylinders and abutments were, if present, measured. For statistical evaluation of misfit areas ANOVA multivariate analysis and Tukey tests were used. Pre-fabricated cast-to cylinders which received higher melting temperature alloy showed significant differences in terms of marginal misfit. No significant differences were observed comparing the control and the lower melting temperature alloy group. Co-Cr casting alloy with a higher melting temperature cast on prefabricated Co-Cr implant cylinders might induce greater marginal misfit areas. The selected alloy for compound casting must not exceed the melting temperature of prefabricated implant cylinder base as recommended by manufactures. / O objetivo desde estudo foi analisar se os diferentes pontos de fus?o de ligas de cobalto-cromo (Co-Cr) para sobrefundi??o podem influenciar na adapta??o marginal de cilindros pr?-fabricados para pr?tese implantossuportada. Duas ligas met?licas de Co-Cr com pontos de fus?o distintos indicados pra t?cnica de sobrefundi??o foram fundidas aos cilindros pr?-fabricados com base de Co-Cr. As amostras foram confeccionadas, fixando os cilindros aos pilares e embutidas em resina ep?xi, formando tr?s grupos de acordo com a liga utilizada. Grupo 1: controle (cilindros de f?brica); Grupo 2: liga de Co-Cr com menor ponto de fus?o (LMT); Grupo 3: liga de Co-Cr com maior ponto de fus?o (HMT). As amostras foram seccionadas longitudinalmente na por??o central do conjunto por uma m?quina de precis?o, polidas e encaminhadas para avalia??o por microscopia eletr?nica de varredura ?ptica. As imagens foram analisadas e verificadas a presen?a de desadapta??es. Cada ?rea de desadapta??o entre cilindro e pilar foram medidas. Os resultados demonstraram signific?ncia (p<0.005) para o grupo em que os cilindros pr?-fabricados foram sobrefundidos com a liga de maior ponto de fus?o apresentando ?reas de desadapta??o marginal ao pilar. O grupo HMT demonstrou valores m?dios para ?rea de 2,489 ?m2 (?1,073), o grupo LMT de 1,536 ?m2 (? 0,375) e enquanto o grupo controle de 1,272 ?m2 (? 0,577). Para as medidas de estabilidade dimensional n?o foram observadas diferen?as estat?sticas (p>0.005) entre os grupos experimentais. Contudo, indica-se que para sobrefundi??o de cilindros pr?-fabricados a liga met?lica utilizada n?o deve possuir ponto de fus?o acima do preconizado pelo fabricante do cilindro.

Submitted by PPG Medicina e Ci?ncias da Sa?de (medicina-pg@pucrs.br) on 2018-05-04T19:10:28Z No. of bitstreams: 1 B?RBARA_FREIBERGER_SCHAEFER.pdf: 1176504 bytes, checksum: 78558bd375bc4c7f9afcb46a36c0d9a9 (MD5) / Approved for entry into archive by Caroline Xavier (caroline.xavier@pucrs.br) on 2018-05-14T12:54:32Z (GMT) No. of bitstreams: 1 B?RBARA_FREIBERGER_SCHAEFER.pdf: 1176504 bytes, checksum: 78558bd375bc4c7f9afcb46a36c0d9a9 (MD5) / Made available in DSpace on 2018-05-14T12:59:21Z (GMT). No. of bitstreams: 1 B?RBARA_FREIBERGER_SCHAEFER.pdf: 1176504 bytes, checksum: 78558bd375bc4c7f9afcb46a36c0d9a9 (MD5) Previous issue date: 2018-02-26 / Introduction: The medical interview is fundamental for the approximation and recognition of the patient, and the physical examination usually increases the diagnostic possibility in the investigation. Technological development and immense diagnostic possibilities through complementary examinations have led to the idea of lesser importance of anamnesis and physical examination. Objective: To evaluate the undergraduate medical student's ability to perform a correct clinical diagnosis, from the presentation of clinical cases with information only from anamnesis or anamnesis and clinical examination together, without complementary exams. Methodology: A cross-sectional, exploratory study with quantitative data analysis of four clinical cases (two with isolated anamnesis and two with anamnesis and physical examination) answered by the students as a teaching task of the Medical Clinic discipline, with 97 academics from the School of Medicine of PUCRS from 2016 to 2017. Results: The findings showed that the majority of the students who participated in the study were female (54 subjects - 55.7%), predominantly white (94 - 96.9%), on average of 24.1 (+ 2.3) years old, having correctly determined 177 diagnoses (45.62%) in the first hypothesis. There was a significant difference (p <0.001) when compared the number of correct diagnosis in clinical cases with isolated anamnesis 108 (55.6%) to those with anamnesis and physical examination 69 (35.6%). Conclusion: It was verified that, for the undergraduate medical students of the fourth year from the School of Medicine, the correct answers in the first diagnosis were more frequent and with statistical significance, when clinical cases with isolated anamnesis were offered than when it was offered anamnesis and physical examination. / Introdu??o: A entrevista m?dica ? fundamental para a aproxima??o e reconhecimento do paciente, e o exame f?sico, habitualmente, aumenta a possibilidade diagn?stica na investiga??o. O desenvolvimento tecnol?gico e as imensas possibilidades diagn?sticas atrav?s dos exames complementares t?m levado ? ideia de menor import?ncia da anamnese e exame f?sico. Objetivo: Avaliar o n?mero de ocorr?ncias de diagn?sticos etiol?gicos adequados a partir da Anamnese e Exame F?sico, sem exames complementares, realizados por acad?micos do curso de gradua??o em Medicina. Metodologia: Estudo explorat?rio, transversal, com an?lise quantitativa dos dados, a partir de quatro casos cl?nicos (dois com anamnese isolada e dois com anamnese mais exame f?sico) preenchidos pelos alunos como tarefa de ensino aprendizagem da disciplina de Cl?nica M?dica, com 97 acad?micos de medicina da Escola de Medicina da PUCRS, no ano de 2016 e 2017. Resultados: Os achados evidenciaram que a maior parte dos acad?micos participantes do estudo eram do sexo feminino 54 (55,7%), predominantemente da ra?a branca 94 (96,9%), tinham em m?dia 24,1 (+ 2,3) anos, e que acertaram 177 diagn?sticos (45,62%) na primeira hip?tese. Houve diferen?a significativa (p<0,001) quando comparado o n?mero de acertos no diagn?stico em casos cl?nicos com anamnese isolada 108 (55,6%) comparado com aqueles com anamnese mais o exame f?sico 69 (35,6%). Conclus?o: Verificou-se que, para alunos de medicina do quarto ano de gradua??o da escola m?dica, os acertos com o primeiro diagn?stico foram mais frequentes e com signific?ncia estat?stica quando eram oferecidos casos cl?nicos com anamnese isoladamente do que quando se oferecia anamnese mais o exame f?sico.

Submitted by PPG Gerontologia Biom?dica (geronbio@pucrs.br) on 2018-07-11T17:35:47Z No. of bitstreams: 1 GOMES_NORA_HELENA_GALVAN_DIS.pdf: 4782532 bytes, checksum: 303904ab3e4561c3be4f0debb8c63e1f (MD5) / Approved for entry into archive by Sheila Dias (sheila.dias@pucrs.br) on 2018-08-02T11:40:47Z (GMT) No. of bitstreams: 1 GOMES_NORA_HELENA_GALVAN_DIS.pdf: 4782532 bytes, checksum: 303904ab3e4561c3be4f0debb8c63e1f (MD5) / Made available in DSpace on 2018-08-02T11:48:17Z (GMT). No. of bitstreams: 1 GOMES_NORA_HELENA_GALVAN_DIS.pdf: 4782532 bytes, checksum: 303904ab3e4561c3be4f0debb8c63e1f (MD5) Previous issue date: 2013-03-26 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / Hearing loss in the elderly is a disability that causes the greatest impact on your daily life, making it difficult to communicate with the environment. Occurs as a result, a great difficulty accepting this inability on the part of the family, and the very elderly, there is a need to make them aware of this difficulty, and how it is harmful. In this age group there is a natural tendency to isolation, volunteer, and these elderly deprive of full social life, and as a result, may lead to varying levels of depression. This study aimed to evaluate the influence of hearing aids on quality of life and hearing in older adults with hearing impairment. The study included 50 older adults. Being 29 females and 21males, aged over 60 years. After completing the battery of audiological tests were divided into two groups: G1 ? Intervention Group, with made use of hearing aids, and G2 ? Control Group, who did not use hearing aids. In all test was applied HHIE-s, MMSE, and WHOQOL-Bref before the use of hearing aids and 12 weeks after. We conducted weekly monitoring to ensure effective adaptation and use of prostheses adapted. In G1, the analysis of the HHIE is showed that the scores Scale Emotional and Scale Social/Situational post in the of hearing aids, showed statistically significant compared to the G2, which remained unchanged. The results of the MMSE in the post intervention period showed no statistically significant differences comparing the two groups. In the test WHOQOL-Bref the same fact occurred because the changes were not statistically significant. The use of hearing aids for the elderly provides a lower perception of participation constraints observed through the use of self-perception questionnaire HHIE-S. The quality of life improves, demonstrated by WHOQOL in the physical domain, compared with seniors who do not use hearing amplification. There was also an improvement in the MMSE test scores, compared with the group without amplification. / A defici?ncia auditiva no idoso ? uma das incapacidades com maior impacto na sua vida di?ria, dificultando sua comunica??o com o ambiente. Al?m disso, ocorre uma grande dificuldade na aceita??o dessa incapacidade por parte da fam?lia e pelo pr?prio idoso, o que demanda uma grande necessidade em conscientiz?-los sobre a dificuldade presente e o quanto lhe ? prejudicial. Nessa faixa et?ria, existe uma tend?ncia natural ao isolamento, volunt?rio, sendo esses idosos privados do conv?vio social pleno, podendo lev?-los a n?veis variados de depress?o. Este estudo teve como objetivo avaliar a influ?ncia da pr?tese auditiva na qualidade de vida e na audi??o em idosos com defici?ncia auditiva. Para isso, participaram do estudo 50 idosos, sendo 29 do sexo feminino e 21 do sexo masculino, com idade igual ou superior a 60 anos. Ap?s completarem a bateria de testes audiol?gicos, foram divididos em dois grupos: G1 ? Grupo de Interven??o ?, que fez uso de pr?tese auditiva, e G2 ? Grupo Controle ?, que n?o fez uso de pr?tese auditiva. Em todos foram aplicados os testes Hearing Handicap Inventory for the Elderly ? Screening Version (HHIE-S), MiniExame do Estado Mental (MEEM) e World Health Organization Quality of Life Bref (WHOQOL-Bref), antes do uso das pr?teses auditivas e 12 semanas ap?s. Foi realizado acompanhamento semanal para garantir a adapta??o e o uso efetivo das pr?teses adaptadas. No G1, a an?lise do HHIE demonstrou que os escores da Escala Emocional e Escala Social/Situacional no per?odo ap?s o uso das pr?teses auditivas se mostrou estatisticamente significante quando comparada com a an?lise do G2, que se manteve inalterado. Os resultados do MEEM, no per?odo p?s-interven??o, n?o apresentaram diferen?as estatisticamente significantes, comparando os dois grupos. No teste WHOQOL-Bref, ocorreram mudan?as apenas em um dom?nio. Com esses resultados, infere-se que o uso da pr?tese auditiva proporciona ao idoso uma menor autopercep??o de restri??es de participa??o, observada pelo uso do question?rio de autopercep??o HHIE-S. A qualidade de vida modifica, como foi demonstrado pelo WHOQOL, no dom?nio f?sico, comparando com idosos que n?o fizeram uso de amplifica??o auditiva. Foram observadas tamb?m mudan?as nos escores do teste MEEM, comparando com o grupo sem amplifica??o.

Esta tese corresponde a um experimento descritivo em torno das práticas e modos de conhecimento altorionegrinos, a partir do alto rio Tiquié (afluente do rio Uaupés na Terra Indígena Alto Rio Negro, município de São Gabriel da Cachoeira, Amazonas), onde nasceram e se criaram os seus interlocutores, hoje dispersos entre o alto Tiquié, São Gabriel, Manaus... Tornando presente minha perspectiva antropológica entre os Tuyuka, analiso percepções acerca dos processos de geração e transformação dos saberes considerados de maior valor (niromakañe). O objetivo consiste em descrever como conhecedores (masirã) são percebidos a partir de atualizações de aspectos da agnação ou das vitalidades transmitidas por linhas paternas. Agnação que se realiza sob novas formas nos movimentos de abertura ao exterior - nos abrandamentos nas práticas de proteção, na nominação, na circulação de sabres e sua eficácia na composição de almas, corpos, pensamentos. / Amazonian Northwest Region) This work is consistent with a descriptive experiment on the upper Negro river ways and uses of knowledge, beginning at the high Tiquie River (a tributary of the Uaupés River, municipality of Sao Gabriel da Cachoeira, Amazon), where the interlocutors of this work were born and raised, today dispersed among the high Tiquié, Sao Gabriel, Manaus... Presenting my anthropological perspective among the Tuyuka, I analyze perceptions circa the generation and transformation processes of the most valued considered knowledge (niromakañe). With analytical emphasis on knowledge networks, I describe agnation aspects or vitalities as they are transmittet through male lines, Agnation which is carried out on new ways under overture to the exterior (softening of protection practices and nomination, alternative modes of knowledge circulation and its efficacy in the composition of souls, bodies, thoughts).

Made available in DSpace on 2015-03-04T21:02:08Z (GMT). No. of bitstreams: 0 Previous issue date: 29 / Nenhuma / Neste estudo o que se pretende analisar são as possibilidades de debate acerca da condição animal a partir das reflexões levadas a efeito por Jacques Derrida. O texto é desenvolvido em cinco etapas. A primeira, dedicada à exposição da tese heideggeriana o animal é pobre de mundo – oportuna para a compreensão das reflexões posteriormente desenvolvidas por Derrida; a segunda, dedicada à apresentação, ainda ampla e genérica, da forma como Derrida desenvolveu suas reflexões a respeito da condição animal; na terceira, na quarta e na quinta etapas, assentadas já, nas duas anteriores, as bases para que se possa compreender, adequadamente, o pensamento de Derrida a respeito do tema, a condição animal é apresentada, respectivamente, à luz dos seguintes enfoques: o sujeito e o cálculo do sujeito, a amizade e as políticas de amizade, a justiça e a hospitalidade. Os trabalhos de Derrida de presença mais marcante neste estudo são: O animal que logo sou, E digo que o animal respondeu?, conferências proferidas no colóquio r / This work intents to analyse issues of discussion concerning to the animal condition, considering reflections brought to the light by Jacques Derrida. The text is developed in five steps. The first one is dedicated to the exposition of the heideggerian thesis animal is poor of world – that fits to the context in terms of comprehending reflections developed later by Derrida; the second one deals with the presentation, in a wide and generic way, the form as Derrida developed his reflections concerning to the animal condition. In the third, fourth and in the fifth, these supported in the preceeding ones, is gave some bases to comprehend correctly and in a large scale Derrida’s thought in relation to the theme. Animal condition is showed by the light of the following focuses, respectively: the subject and the calculation of the subject, friendship and the policies of friendship, justice and hospitality. The Derrida’s works that have a very remarkable presence in this study are: The Animal That Therefore I am, And

Submitted by Setor de Tratamento da Informa??o - BC/PUCRS (tede2@pucrs.br) on 2015-05-21T20:19:16Z No. of bitstreams: 1 469176 - Texto Completo.pdf: 1075538 bytes, checksum: c372985d28935427b18fce7ee072399d (MD5) / Made available in DSpace on 2015-05-21T20:19:16Z (GMT). No. of bitstreams: 1 469176 - Texto Completo.pdf: 1075538 bytes, checksum: c372985d28935427b18fce7ee072399d (MD5) Previous issue date: 2015-03-30 / Imaging exams performed in areas with the presence of metallic materials such as dental implants can decrease the accuracy of the exams due to metallic artifacts production generated in the peri-implant region. A sample of 21 dental implants placed in 10 patients with Branemark protocol prostheses was evaluated in the periimplant area in image exams of the post-surgery control using periapical radiography (paralleling technique), panoramic radiography and cone-beam computed tomography (CBCT). The radiographic density of different areas bounded near the dental implants were calculated and compared considering their locations and the imaging exams using the software ImageJ. Regarding the different imaging exams, the CBCT showed significant differences between the measured areas (p<0.001), while in periapical (p=0.430) and panoramic (p=0.149) radiographs did not occur significant difference between the gray mean values in these areas. Comparing the areas in the three exams it was observed larger values next to the implants in all exams: CBCT (126.20 and 127.44) panoramic radiography (106.51 and 106.09) and periapical radiography (120.32). The more distant areas and the areas closest to neighboring implants had significant different values in the two reconstructed images of CBCT when compared to the panoramic and periapical radiographs. The interference of dental implants in acquiring radiographic and tomographic exams was confirmed by altered radiographic density mean values in the peri-implant area. Comparing the three exams it was noticed that the CBCT image showed the most significant interference of the dental implants. / Os exames por imagem realizados em ?reas que apresentam materiais met?licos, como implantes dent?rios, podem ter sua qualidade prejudicada devido ? produ??o de artefatos met?licos gerados na regi?o peri-implantar. Uma amostra de 21 implantes dent?rios, em 10 pacientes com pr?teses do tipo protocolo Branemark, foi avaliada com o objetivo de comparar as densidades radiogr?ficas na regi?o periimplantar em exames de imagens de controle p?s-operat?rio com radiografia periapical (t?cnica do paralelismo), radiografia panor?mica e tomografia computadorizada de feixe c?nico. Os valores m?dios de densidade em ?reas delimitadas pr?ximas aos implantes dent?rios foram calculados e comparados, de acordo com suas localiza??es, e entre os exames de imagens utilizando o programa ImageJ. Os exames de Tomografia Computadorizada de Feixe C?nico (TCFC) apresentaram diferen?as significativas entre as ?reas medidas (p<0,001), enquanto que nas radiografias periapical (p=0,430) e panor?mica (p=0,149) n?o houve diferen?a significativa entre os valores m?dios de densidade nas mesmas ?reas. Na compara??o entre as ?reas dos tr?s exames, observou-se valores maiores naquelas pr?ximas aos implantes em todos os exames: TCFC (127,88 e 120,71), panor?mica (106,51 e 106,09) e periapical (120,32). As ?reas mais distantes e pr?ximas aos implantes vizinhos mostraram valores significativamente diferentes nos dois cortes da TCFC quando comparados aos exames periapical e panor?mico. Sendo assim, foi poss?vel confirmar a interfer?ncia dos implantes dent?rios na obten??o dos exames radiogr?ficos e tomogr?ficos, pela altera??o dos valores m?dios de densidade radiogr?fica na regi?o peri-implantar. Na compara??o entre os tr?s exames de imagem investigados, verificou-se que as imagens de TCFC sofreram a maior interfer?ncia dos implantes dent?rios, quando comparadas com as imagens radiogr?ficas.

Submitted by Setor de Tratamento da Informa??o - BC/PUCRS (tede2@pucrs.br) on 2015-06-17T18:27:45Z No. of bitstreams: 1 470532 - Texto Completo.pdf: 1614440 bytes, checksum: e43e90ac45fd2b22f0d595dd9c475e47 (MD5) / Made available in DSpace on 2015-06-17T18:27:45Z (GMT). No. of bitstreams: 1 470532 - Texto Completo.pdf: 1614440 bytes, checksum: e43e90ac45fd2b22f0d595dd9c475e47 (MD5) Previous issue date: 2015-03-04 / This study aimed to evaluate "in vitro" possible changes on prosthetic retaining screws on implants with platform external hexagon, this because the loosening this component is very common in clinical dentistry practice. Were assessed screws of UCLA's pillars of titanium Neodent? brand and 3i BIOMET? and of titanium with surface treated with tungsten carbide Neodent? brand. Two techniques of utilization of the screws were compared, the technique I, recommended by the manufacturer with only the definitive torque, and the technique II , utilized in broad scale in Brazil where multiple torques are applied in the same screw simulating the clinical steps, up to definitive installation. The initial weight of all the screws (T0) was registered, in the screws of technique I, it was given definitive torque (32N.cm to Neodent? and 20N.cm to 3i BIOMET?) submitted to mechanical cycling and the final weight (TF) registered. In the screws of technique II have been applied opening and closing cycles, and their weights registered (T1, T2 and T3) before applying the definitive torque and mechanical cycling after the final weight has been registered (TF). The morphologies and the surface compositions of the screws were evaluated using SEM and EDS at each time. The results showed significant weight loss in the three screws groups, of technique I (p = 0.005 for uncoated Neodent?, p = 0.007 for coated Neodent? and p = 0.001 to 3i BIOMET?) and on two the steps of the three groups of technique II (p <0.001 for all groups), and comparing the final weight of the screws of the two techniques, the screws of the technique I, showed significantly higher values than the screws, of the technique II (p = 0.007 for uncoated Neodent?, p = 0.009 for coated Neodent? and p = 0.001 to 3i BIOMET?), as well as SEM showed less permanent deformation for the technique I. EDS showed no major changes in the surface compositions. Therefore, the use of the definitive screw only at time of final torque can minimize problems regarding to the loosening the retaining screws of implant supported prostheses. / O presente estudo teve como objetivo avaliar ?in vitro? poss?veis altera??es em parafusos de reten??o de pr?teses sobre implantes com plataforma hex?gono externo, isto porque o afrouxamento deste componente ? muito frequente na pr?tica cl?nica odontol?gica. Foram avaliados parafusos de pilares UCLA de tit?nio da marca Neodent? e 3i BIOMET? e de tit?nio com superf?cie tratada com carboneto de tungst?nio da marca Neodent?. Duas t?cnicas de utiliza??o dos parafusos foram comparadas, a t?cnica I, recomendada pelo fabricante com apenas o torque definitivo, e a t?cnica II, utilizada em grande escala no Brasil onde s?o aplicados m?ltiplos torques no mesmo parafuso, simulando as etapas cl?nicas at? a instala??o definitiva. Foi registrado o peso inicial de todos os parafusos (T0), nos parafusos da t?cnica I foi dado torque definitivo (32N.cm para Neodent? e 20N.cm para 3i BIOMET?), submetidos a ciclagem mec?nica e registrado o peso final (TF). Nos parafusos da t?cnica II foram aplicados ciclos de abertura e fechamento e seus pesos registrados (T1, T2 e T3) antes da aplica??o do torque definitivo e ciclagem mec?nica, ap?s o peso final foi registrado (TF). As morfologias e as composi??es de superf?cie dos parafusos foram avaliadas atrav?s de MEV e EDS em cada tempo. Os resultados evidenciaram perda significativa de peso nos tr?s grupos de parafusos da t?cnica I (p=0,005 para Neodent? sem revestimento, p=0,007 para Neodent? com revestimento e p=0,001 para 3i BIOMET?) e em duas das etapas dos tr?s grupos da t?cnica II (p<0,001 para todos os grupos), sendo que comparando o peso final dos parafusos das duas t?cnicas, os parafusos da t?cnica I apresentaram valores significativamente maiores que os parafusos da t?cnica II (p=0,007 para Neodent? sem revestimento, p=0,009 para Neodent? com revestimento e p=0,001 para 3i BIOMET?), assim como a MEV evidenciou menor deforma??o permanente para a t?cnica I. EDS n?o apresentou grandes altera??es nas composi??es de superf?cie. Portanto, a utiliza??o do parafuso definitivo apenas no momento do torque final pode minimizar problemas com rela??o ao afrouxamento de parafusos de reten??o de pr?teses implanto suportadas.

Submitted by Setor de Tratamento da Informa??o - BC/PUCRS (tede2@pucrs.br) on 2015-07-30T17:52:46Z No. of bitstreams: 1 472789 - Texto Completo.pdf: 2619919 bytes, checksum: ed658917522947aaf046eb032864fcc4 (MD5) / Made available in DSpace on 2015-07-30T17:52:46Z (GMT). No. of bitstreams: 1 472789 - Texto Completo.pdf: 2619919 bytes, checksum: ed658917522947aaf046eb032864fcc4 (MD5) Previous issue date: 2015-03-09 / This study aimed to evaluate "in vitro" possible changes on prosthetic retaining screws on implants with platform external hexagon, this because the loosening this component is very common in clinical dentistry practice. Were assessed screws of UCLA's pillars of titanium Neodent? brand and 3i BIOMET? and of titanium with surface treated with tungsten carbide Neodent? brand. Two techniques of utilization of the screws were compared, the technique I, recommended by the manufacturer with only the definitive torque, and the technique II , utilized in broad scale in Brazil where multiple torques are applied in the same screw simulating the clinical steps, up to definitive installation. The initial weight of all the screws (T0) was registered, in the screws of technique I, it was given definitive torque (32N.cm to Neodent? and 20N.cm to 3i BIOMET?) submitted to mechanical cycling and the final weight (TF) registered. In the screws of technique II have been applied opening and closing cycles, and their weights registered (T1, T2 and T3) before applying the definitive torque and mechanical cycling after the final weight has been registered (TF). The morphologies and the surface compositions of the screws were evaluated using SEM and EDS at each time. The results showed significant weight loss in the three screws groups, of technique I (p< 0.005 for uncoated Neodent?, p = 0.001 for coated Neodent? and p < 0.001 to 3i BIOMET?) and on one step of the uncoated Neodent? group and two steps of the other two groups of technique II (p <0.001 for all groups), and comparing the final weight of the screws of the two techniques, only the uncoated Neodent? screws of the technique I, showed significantly higher values than the screws, of the technique II (p = 0.021 for uncoated Neodent?, p = 0.089 for coated Neodent? and p = 0.095 to 3i BIOMET?), as well as SEM showed less permanent deformation for the technique I of these screws. EDS showed no major changes in the surface compositions. Therefore, the use of the definitive screw only at time of final torque would not necessarily minimize problems regarding to the loosening the retaining screws of implant supported prostheses. / O presente estudo teve como objetivo avaliar ?in vitro? poss?veis altera??es em parafusos de reten??o de pr?teses sobre implantes com plataforma hex?gono interno, pois o afrouxamento deste componente ? muito frequente na pr?tica cl?nica odontol?gica. Foram avaliados parafusos de pilares UCLA de tit?nio da marca Neodent? e 3i BIOMET? e de tit?nio com superf?cie tratada com carboneto de tungst?nio da marca Neodent?. Duas t?cnicas de utiliza??o dos parafusos foram comparadas, a t?cnica I, recomendada pelo fabricante com apenas o torque definitivo, e a t?cnica II, procedimento que ? comumente realizado pelos profissionais no Brasil, onde s?o aplicados m?ltiplos torques no mesmo parafuso, simulando as etapas cl?nicas at? a instala??o definitiva. Foi registrado o peso inicial de todos os parafusos (T0), nos parafusos da t?cnica I foi dado torque definitivo (32N.cm para Neodent? e 20N.cm para 3i BIOMET?), submetidos a ciclagem mec?nica e registrado o peso final (TF). Nos parafusos da t?cnica II foram aplicados ciclos de abertura e fechamento e seus pesos registrados (T1, T2 e T3) antes da aplica??o do torque definitivo e ciclagem mec?nica, ap?s o peso final foi registrado (TF). As morfologias e as composi??es de superf?cie dos parafusos foram avaliadas atrav?s de MEV e EDS em cada tempo. Os resultados evidenciaram perda significativa de peso nos tr?s grupos de parafusos da t?cnica I (p<0,001 para Neodent? sem revestimento, p=0,001 para Neodent? com revestimento e p<0,001 para 3i BIOMET?), e em uma das etapas do grupo Neodent sem cobertura e duas etapas dos outros dois grupos da t?cnica II (p<0,001 para todos os grupos), sendo que comparando o peso final dos parafusos das duas t?cnicas, apenas os parafusos Neodent? sem revestimento da t?cnica I apresentaram valores significativamente maiores que os parafusos da t?cnica II, (p=0,021 para Neodent? sem revestimento, p=0,089 para Neodent? com revestimento e p=0,095 para 3i BIOMET?), do mesmo modo a MEV evidenciou menor deforma??o permanente para a t?cnica I desses parafusos. EDS n?o apresentou grandes altera??es nas composi??es de superf?cie. Portanto, a utiliza??o do parafuso definitivo apenas no momento do torque final n?o minimizar? necessariamente problemas com rela??o ao afrouxamento de parafusos de reten??o de pr?teses implanto suportadas.

Submitted by Setor de Tratamento da Informa??o - BC/PUCRS (tede2@pucrs.br) on 2015-09-04T19:09:27Z No. of bitstreams: 1 474617 - Texto Completo.pdf: 1140625 bytes, checksum: 1e763d7b5cf7e0a7ceeb1f2842c8c315 (MD5) / Made available in DSpace on 2015-09-04T19:09:28Z (GMT). No. of bitstreams: 1 474617 - Texto Completo.pdf: 1140625 bytes, checksum: 1e763d7b5cf7e0a7ceeb1f2842c8c315 (MD5) Previous issue date: 2015-01-12 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / This paper aims to investigate the influence of normalization in cone beam computed tomography (CBCT) and multislice computed tomography (MSCT) grey level to assess bone quality of recipient sites for dental implants. DICOM (Digital Imaging and Communications in Medicine) images from 37 bone sites (18 patients) were analyzed. CBCT was performed with 5 different CBCT devices and MSCT in a single multislice CT scanner. Measurements of mean grey level were performed in two regions of interest; ROI1 - alveolar bone (cortical and trabecular) and ROI2 - cancellous bone separately with 3 tested forms: no normalization (RAW), normalization of the whole image (ALL) and normalization of the region of interest only (ROI). Descriptive analysis with coefficient of variation (CV) and one-way ANOVA followed by Tukey was performed. For MSCT, ROI1 mean grey level slightly increased from 121.9+-17.13 (RAW) to 125.0+-15.74 (ALL) (p>0.05) and reduced to 104.8+-15.20 (ROI) (p<0.0001). CV varied from 14.05%, to 12.59% and 14.50%, respectively. ROI2 increased from 95.11+-13.96 (RAW) to 99.40+-13.62 (ALL) and 102.5+-17.86 (ROI) (p=0.0678). CV was 14.67% to 13.71% and 17.43%, respectively. In CBCT group, ROI1 meaningfully raise from 91.73+-32.17 (RAW) to 135.2+-36.06 (ALL) and 118.7+-18.65 (ROI) (p<0.0001), with CV decreasing from 35.06% to 26.68% and 15.71%, respectively. ROI2 was 81.23+-34.36, 115.3+-28.53 and 109.4+-17.47, respectively (p=0.0002), with a CV reducing from 42.30% (RAW) to 24.74% (ALL) and 15.97% (ROI). Therefore, the use of intensity normalization of CBCT and MSCT examinations was demonstrated on reducing discrepancies between different scanners and inter-exams variability in bone quality assessment for dental implants. / Este trabalho objetiva investigar a influ?ncia da normaliza??o dos n?veis de cinza em tomografias cone beam (CBCT) e multislice (MSCT). Imagens DICOM (Digital Imaging and Communications in Medicine) de 37 s?tios ?sseos (18 pacientes) foram analisadas. As tomografias CBCT foram realizadas em 5 diferentes aparelhos e as tomografias MSCT foram obtidas em um ?nico tom?grafo. As medi??es dos n?veis de cinza foram feitas em duas regi?es de interesse; ROI1 - osso alveolar (cortical e medular) e ROI2 - osso medular separadamente, de 3 formas distintas: sem normaliza??o (RAW), normaliza??o de toda a imagem (ALL) e normaliza??o da regi?o de interesse apenas (ROI). An?lise descritiva com coeficiente de varia??o (CV) e teste ANOVA seguido de Tukey foi realizado. Para as MSCT, a m?dia dos n?veis de cinza da ROI1 aumentaram levemente de 121,9+-17,13 (RAW) para 125,0+-15,74 (ALL) (p>0,05) e reduziram para 104,8+-15,20 (ROI) (p<0,0001). O CV variou de 14,05%, para 12,59% and 14,50%, respectivamente. Na ROI2 a m?dia aumentou de 95,11+-13,96 (RAW) para 99,40+-13,62 (ALL) e 102,5+-17,86 (ROI) (p=0,0678). O CV foi de 14,67% para 13,71% e 17,43%, respectivamente. No grupo CBCT, a m?dia de ROI1 aumentou significativamente de 91,73+-32,17 (RAW) para 135,2+-36,06 (ALL) e 118,7+-18,65 (ROI) (p<0,0001), com o CV diminuindo de 35,06% para 26,68% e 15,71%, respectivamente. A m?dia da ROI2 foi 81,23+-34,36, 115,3+-28,53 and 109,4+-17,47, respectivamente (p=0,0002), com um CV reduzindo de 42,30% (RAW) para 24,74% (ALL) e 15,97% (ROI). Desta forma, foi demonstrada a redu??o das discrep?ncias entre diferentes aparelhos e da variabilidade entre exames com a utiliza??o da normaliza??o de intensidade de exames CBCT e MSCT na avalia??o da qualidade ?ssea para implantes dentais.