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A patient utility analysis of treatment modalities for replacing a single missing tooth a thesis submitted in partial fulfillment ... for the degree of Master of Science in Restorative Dentistry ... /Kanjirath, Preetha Panose. January 2003 (has links)
Thesis (M.S.)--University of Michigan, 2003. / Includes bibliographical references.
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Cellular metabolic responses to metal ions released from nickel-chromium dental alloysMesser, Regina L. W. January 1999 (has links)
Thesis (Ph. D.)--University of Alabama at Birmingham, 1999. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
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Identification of oxide layers of CP titanium in response to cleaning procedures a thesis submitted in parital fulfillment ... Master of Science in Prosthodontics ... /Machnee, Corrine H. January 1992 (has links)
Thesis (M.S.)--University of Michigan, 1992.
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Evaluation of prokaryotic and eukaryotic cells on treated HA discs SEM and visual assay master's thesis project /Cunningham, Geoffrey R. January 1900 (has links)
Thesis (M.S.)--West Virginia University, 2009. / Title from document title page. Document formatted into pages; contains v, 61 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 50-56).
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The influence of heat production relative to drill wear during osteotomy preparation by different implant drill systems a comparison study between ceramic and conventional implant drill systems /Alyassin, Waleed. January 2010 (has links)
Thesis (M.S.)--West Virginia University, 2010. / Title from document title page. Document formatted into pages; contains vi, 41 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 37-41).
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Influência de implantes pós-exodônticos com diferentes configurações sobre os tecidos peri-implantares: estudo experimental em cãesCaneva, Marco [UNESP] 05 September 2011 (has links) (PDF)
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caneva_m_dr_araca.pdf: 5420643 bytes, checksum: 2a88c9a9a85203bfd0cd8f4fd62affa4 (MD5) / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / Objetivo: avaliar a influência da instalação de implantes em alvéolos imediatamente após a extração do elemento dental na regeneração dos tecidos peri-implantares com implantes de diferentes configurações Material e métodos: Nos alvéolos distais dos quartos pré-molares mandibulares de cães, imediatamente após as extrações das raízes dentais, foram instalados implantes cilíndricos com 3,3 mm de diâmetro (grupo controle) e implantes cônicos com 5,0 mm de diâmetro (grupo teste). Foram avaliados histologicamente a regeneração dos tecidos duros e moles peri-implantares após 4 meses do procedimento cirúrgico. Resultados: Todos os implantes apresentaram-se osseointegrados ao tecido ósseo maduro mineralizado. A crista óssea alveolar sofreu reabsorção tanto no grupo teste como controle. A superfície óssea vestibular dos implantes do grupo teste (cônico; 3,6 mm) apresentou maior grau de reabsorção em comparação ao grupo controle (cilíndrico; 1,6 mm). As dimensões dos tecidos moles apresentaram-se semelhantes em ambos os grupos. No entanto, em relação ao ombro do implante, a mucosa peri-implantar localizou-se mais apicalmente no grupo teste em relação ao grupo controle. Conclusão: Este estudo confirmou que a distância entre a superfície do implante e o contorno externo da crista óssea alveolar vestibular influenciou no grau de reabsorção da tábua óssea vestibular. Conseqüentemente, em relação ao ombro do implante, a mucosa peri-implantar será estabelecida em um nível mais apical, se a distância entre a superfície do implante e o contorno externo da crista óssea alveolar for menor / Aim: the aim of the present experiment was to study the influence of implant installation into sockets immediately after tooth extraction on the healing periimplant tissues with implants of various configurations. Material & methods: Transmucosal cylindrical 3.3mm in diameter implants in the control sites, and conical 5.0mm in diameter in the test sites, were installed into the distal socket of the forth mandibular premolars in dogs immediately after tooth extraction. After 4 months, the hard and soft tissue healing was evaluated histologically. Results: All implants were integrated in mineralized mature bone. Both at the test and control sites, the alveolar crest underwent resorption. The buccal bony surface at the implant of the test sites (conical; 3.6mm) was more resorbed compared to the control sites (cylindrical; 1.6mm). The soft tissue dimensions were similar in both groups. However, in relation to the implant shoulder, the periimplant mucosa was located more apically at the test compared to the control sites. Conclusion:The present study confirmed that the distance between the implant surface and the outer contour of the buccal alveolar bony crest influenced the degree of resorption of the buccal bone plate. Consequently, in relation to the implant shoulder, the peri-implant mucosa will be established at a more apical level if the distance between the implant surface and the outer contour of the alveolar crest is small
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Análise microbiológica da peri-implantite induzida por ligadura em diferentes superfícies de implantes osseointegrados: estudo em cãesShibli, Jamil Awad [UNESP] 17 April 2000 (has links) (PDF)
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shibli_ja_me_arafo.pdf: 739694 bytes, checksum: 57c9b17fc168fc0329fc6f5001a03672 (MD5) / Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) / A microbiota presente na peri-implantite induzida por ligadura, em diferentes superfícies de implantes osseointegrados, foi analisada em 6 cães adultos machos. 36 implantes osseointegrados (9 Ticp: titânio comercialmente puro; 9 TPS: titânio plasma spray; 9 HA: hidroxiapatita; 9 superfícies tratadas com ácidos) foram inseridos e distribuídos igualmente 3 meses após exodontia de todos os pré-molares inferiores. Após um período de 3 meses de osseointegração, os implantes receberam os cicatrizadores. Decorridos 45 dias de cicatrização, amostras peri-implantares foram colhida, utilizando pontas de papel, no período 0 e após a colocação de ligaduras com fio de algodão, nos períodos 20, 40 e 60 dias. A contagem total de microrganismos (CTM) e a proporação de A. actinomycetemcomitans, Bacteroides forsythus, P. gingivalis, P. intermedia, Campylobacter sp, Capnocytophaga sp., Fusobacterium sp., Peptostreptococcus micros, bastonetes anaeróbios Gram-negativos, Streptococcus beta-hemolíticos, Eikenella corrodens e Candida sp. foram analisadas. Não houve diferença da CTM entre as diferentes superfícies (p>0,05). A Pg não foi detectada no tempo 0; nos tempos 20 e 40 foi detectada em 12 implantes (4 Ticp, 4 HA, 2 TPS e 1 Sup. Trat. com ácidos) e no período 60 dias, em 9 (2 Ticp, 3 HA, 2 TPS e 1 Sup. Trat. com ácidos), tendo menor afinidade à superfície tratada com ácidos. Pi foi detectada em 5 implantes (2 Ticp, 2 HA e 1 Sup. Trat. com ácidos) no período 0 e em 100% dos implantes nos demais períodos. Fusobacterium sp. foi detectado em todos os períodos, tendo uma maior afinidade à HA. Streptococcus beta-hemolíticos foi detectado em 6 implantes (3 Ticp, 1 TPS e 2 HA) no período 0 e 30, 26 e 24 implantes respectivamente nos períodos 20, 40 e 60. Campylobacter sp. e Candida sp. foram detectadas em baixas proporções. Os demais microrganismos não... . / The microbiota associated with ligature-induced peri-implantitis, in different dental implants surfaces, was investigated by cultivation on enriched non-selective and various selective solid media, in 6 mongrel dogs. 36 dental implants (9 Ticp: titanium commercially pure; 9 TPS: titanium plasma spray; 9 HA: hidroxiapatite; 9 surfaces acid-etched) were placed in a similar distribution in all dogs 3 months after extraction of all premolars in mandible. Following a healing period of 3 months, healing abutments were installed and 45 days after cotton ligatures were placed and oral-cleaning procedures abolished for 2 months to induce vertical bone loss of about 40%. Microbial samples were with paper points on day of ligature placement and after 20, 40 and 60 days. The total number of cultivable bacteria and proportions of A. actinomycetemcomitans, Bacteroides forsythus, P. gingivalis, P. intermediate, Campylobacter sp., Capnocytophaga sp., Fusobacterium sp., Peptostreptococcus micros, Enteric Gram-negative rods, beta-hemolytic Streptococcus, Eikenella corrodens and Candida sp. were analyzed. No significant microbiological differences were observed among the different surfaces (p>0,05). Pg was not detected in the time 0; already in the times 20 and 40 were detected in 12 dental implants (4 Ticp, 4 HA, 2 TPS and 1 acid-etched surface) and in the period 60 days, in 9(2 Ticp, 3 HA, 2 TPS and 1 acid-etched surface), tends smaller affinity to eh surface with acids-etched surface. Pi was detected in 5 implants (2 Ticp, 2 HA and 1 acid-etched surface) in the period 0 and in 100% of implants in other periods. Fusobacterium sp. was detected in all the periods, tends a larger affinity to HA. Beta-hemolytic Streptococcus was detected in 6 implants (3 Ticp, 1 TPS and 2 HA) in the period 0 and 30, 26 and 24... (Complete abstract, click electronic address below).
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Influencia do desenho dos implantes endosseos na distribuição de tensões apos aplicação de cargas verticais e obliquas : analise estrutural e fotoelastica / Influence of dental implant design on tensions distribution after vertical and oblique loading : a structural and phtoelactic studyPerez, Miguel Angel Jaimes 18 July 2008 (has links)
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Previous issue date: 2008 / Resumo: Este estudo teve como objetivo analisar a influência do desenho dos implantes endósseos na distribuição de tensões geradas nos modelos fotoelásticos após aplicação de cargas verticais e oblíquas a 7,5N, em quatro marcas comerciais de implantes endósseos. Foram selecionados doze implantes, divididos em quatro grupos: I.) Máster Conect Cônico1 4,3 x 13 mm; II.)Titamax Ti Medular2 3,75 x 13 mm; III.) Colosso3 RC 4,0 x 13mm; IV.) Bicon Uncoated Implant4 3,5 x 11mm, cada grupo contendo 3 implantes da mesma marca comercial. Através da Microscopia Eletrônica de Varredura foi analisado o desenho estrutural dos implantes. Para a análise da distribuição de tensão foram confeccionados oito modelos em resina fotoelástica com dimensões de 40 mm x 10 mm de base e 30 mm de comprimento. Dois implantes para cada grupo foram posicionados e fixados no interior dos modelos fotoelásticos. Uma vez verificada a ausência de tensões nos oito modelos foram iniciados os ensaios. Quatro modelos dos diferentes grupos receberam cargas verticais e quatro receberam cargas oblíquas de 7,5N. Por meio do polariscópio circular pertencente ao laboratório de Materiais Dentários e Prótese da USP-Riberão Preto, foi possível visualizar as franjas de tensões geradas nos modelos. Cada seqüência foi fotografada, sendo mantida a mesma distância focal em todos os ensaios. Os resultados obtidos foram analisados por grupos. O Grupo I, implante de hexágono interno longo com porção cervical polida, topo das roscas arredondadas, passos das roscas contínuas, espirais angulados e configuração cônica, apresentou concentração das tensões na região apical, quando submetida à carga vertical e oblíqua. O Grupo II, implante de hexágono externo, porção cervical polida, topo das roscas em forma de "v", passos das roscas contínuos, espirais anguladas e configuração cilíndrica, apresentou distribuição das tensões na região apical, médio e cervical do implante quando submetida à carga vertical e oblíqua. O Grupo III, implante com hexágono interno, porção cervical polida, topo das roscas em forma cônica, passos das roscas contínuos, espirais anguladas e configuração cilíndrica, apresentou distribuição das tensões nas regiões apical, médio e cervical do implante após aplicação de carga vertical e oblíqua. O Grupo IV, implante com sistema cone morse, ombro cervical inclinado, platô ou barbatanas, topo do platô quadradas, passos do platô descontinuais, e configuração cilíndrica, distribuiu as tensões nas regiões apical, médio e cervical do implante após aplicação de carga vertical e oblíqua. Baseado nos resultados obtidos e dentro da metodologia deste estudo conclui-se que: O grupo I, de configuração cônica concentrou a distribuição das tensões em região apical. Os grupo II, III e IV, de configuração cilíndrica, distribuíram as tensões com intensidade e localização similares nos terços apical médio e cervical. O presente estudo evidenciou haver diferenças na distribuição das cargas de um tipo de implante para outro, levando acreditar que essas diferenças possam ter relação com o desenho das roscas e platô. / Abstract: The meaning of this study was analyze on 4 dental implants brands the influence of its thread design on tensions distribution generated thru photoelastic models, after applying a 7.5N load on vertical and oblique directions. Twelve implants, organized in four groups had been selected: I.) Máster Conect Cônico1 4.3 x 13 mm; II.) Titamax Ti Medular2 3.75 x 13 mm; III.) 4,0 Colosso3 RC x 13mm; IV.) Bicon Uncoated Implant4 3.5 x 11mm, being in each group, three dental implants of the same commercial brand. The structural designs of the implants were analyzed with Electronic Microscopy Sweepings. For the tension distribution analysis, eight models had been confectioned in photoelastic resin with 40mm x 10mm base dimensions and 30 mm of length. Two implants of each group had been located and fixed in the interior of photoelastic models. Once verified the absence of tensions in the eight models the analysis were started. Four models of the different groups had received 7.5N load on vertical and four received this same load on oblique direction. By means of the circular polariscope developed in the Dental Materials and Prostheses laboratory the Ribeirão Preto Dental School (USP/RP), it was possible to visualize the tensions fringes generated in the models. Each sequence was photographed, being kept the same focal distance in all the assays. The gotten results had been analyzed by groups. Group I., implants with long internal hexagon and polishing cervical portion, top of rounded off threads, angled steps of continuous threads, spirals and conical configuration, presented tensions concentration on the apical region, when submitted to the vertical and oblique load. Group II, implants with external hexagon, polishing cervical portion, top of threads in form of v, angled steps of continuous threads, spirals and cylindrical configuration, presented tensions distribution on the apical, medial and cervical regions of the dental implants, when submitted to the vertical and oblique load. Group III., implants with internal hexagon, polishing cervical portion, top of threads in conical form, steps of threads continuous, spirals angled and cylindrical configuration, presented tensions distribution on the apical, medial and cervical regions . Group IV, implants with cone morse system, inclined cervical shoulder, square shaped threads, fin or plateau, angled plateau steps discontinuous, and cylindrical configuration, distributed the tensions on the apical, medial and cervical regions after the application of vertical and oblique loads. Based in the results gotten and respecting the limitations of this study it can be concluding that: Group I. with conical configuration, the tension distributions is concentrated on the apical region. Groups II, III and IV, with cylindrical configuration, had distributed the tensions with similar intensity and localization on the apical, medial and cervical regions. In the present study it is evidenced to have differences in the distribution of loads on the dental implants analyzed, being not evident that these differences have relation with the threads design. / Mestrado / Cirurgia e Traumatologia Buco-Maxilo-Faciais / Mestre em Clínica Odontológica
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A description of dental implants placed at Tygerberg Oral Health CentreMahmoud, Hussein January 2020 (has links)
Magister Scientiae Dentium - MSc(Dent) / This study analyzed the dental surgical implant therapy in the past 5 years at Tygerberg Oral Health Centre, UWC Dental School, Cape Town, South Africa. The findings of this study serve as a guideline for the estimation of the prevalence in this dental hospital. The importance of this study was to aid in the establishment of the formalized electronic database for dental implant therapy. The data generated will form a foundational basis for future studies that may be conducted in the field of implantology.
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A description of dental implants placed at Tygerberg Oral Health CentreMahmoud, Hussein January 2019 (has links)
Magister Scientiae Dentium - MSc(Dent) / Purpose
This study analyzed the dental surgical implant therapy in the past 5 years at Tygerberg Oral Health Centre, UWC Dental School, Cape Town, South Africa. The findings of this study serve as a guideline for the estimation of the prevalence in this dental hospital. The importance of this study was to aid in the establishment of the formalized electronic database for dental implant therapy. The data generated will form a foundational basis for future studies that may be conducted in the field of implantology.
Methodology
A retrospective cross-sectional study was conducted at the Tygerberg Oral Health Centre. The data was collected from the implant dental records for the years 2012-2017. Variables measured included the patient demographics such as age, gender, an implant placed by type, length, width, and anatomical location. Frequencies and means of data were generated using IBM SPSS v20.
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