Introduction: Bien que l'importance de transférer les données de la recherche à la pratique a été largement démontrée, ce processus est toujours lent et fait face à plusieurs défis tels que la conceptualisation des évidences, la validité interne et externe de la recherche scientifique et les coûts élevés de la collecte de grandes quantités de données axées sur le patient. Les dossiers dentaires des patients contiennent des renseignements valables qui donneraient aux chercheurs cliniques une opportunité d'utiliser un large éventail d'informations quantitatives ou qualitatives. La standardisation du dossier clinique permettrait d’échanger et de réutiliser des données dans différents domaines de recherche. Objectifs: Le but de cette étude était de concevoir un dossier patient axé sur la recherche dans le domaine de la prosthodontie amovible à la clinique de premier cycle de l’Université de Montréal. Méthodes: Cette étude a utilisé des méthodes de recherche-action avec 4 étapes séquentielles : l'identification des problèmes, la collecte et l'interprétation des données, la planification et l’évaluation de l'action. Les participants de l'étude (n=14) incluaient des professeurs, des chercheurs cliniques et des instructeurs cliniques dans le domaine de la prosthodontie amovible. La collecte des données a été menée à l’aide d’une revue de littérature ciblée et complète sur les résultats en prosthodontie ainsi que par le biais de discussions de groupes et d’entrevues. Les données qualitatives ont été analysées en utilisant QDA Miner 3.2.3. Résultats: Les participants de l'étude ont soulevé plusieurs points absents au formulaire actuel de prosthodontie à la clinique de premier cycle. Ils ont partagé leurs idées pour la conception d'un nouveau dossier-patient basé sur 3 objectifs principaux: les objectifs cliniques, éducatifs et de recherche. Les principaux sujets d’intérêt en prosthodontie amovibles, les instruments appropriés ainsi que les paramètres cliniques ont été sélectionnés par le groupe de recherche. Ces résultats ont été intégrés dans un nouveau formulaire basé sur cette consultation. La pertinence du nouveau formulaire a été évaluée par le même groupe d'experts et les modifications requises ont été effectuées. Les participants de l'étude ont convenu que le cycle de recherche-action doit être poursuivi afin d'évaluer la faisabilité d’implémentation de ce dossier modifié dans un cadre universitaire. Conclusion: Cette étude est une première étape pour développer une base de données dans le domaine de la prothodontie amovible. La recherche-action est une méthode de recherche utile dans ce processus, et les éducateurs académiques sont bien placés pour mener ce type de recherche. / Introduction: Although the importance of research translating into practice has been widely recognized, this process is still slow and faces several barriers such as conceptualizations of evidence, internal and external validity of the evidence and high costs of providing large amounts of patient-based outcome data. Patient’s dental records contain valuable information that would give clinical researchers an opportunity to use a wide range of quantitative or qualitative information. Standardization of clinical record would allow the interoperability and reusability of data in different research fields. Objectives: The aim of this study was to design a research-based patient record in the field of removable prosthodontics in the undergraduate clinic of the “Université de Montréal.” Methods: This study used action research methods with 4 sequential steps: problem identification, gathering and interpreting data, action planning, and action evaluation. Study participants included professors, clinical researchers, and clinical instructors in the field of removable prosthodontics. Data collection consisted of a comprehensive literature review on prosthodontic outcomes as well as focus-group discussions and interviews. The qualitative data were analysed using QDA Miner 3.2.3. Results: The study participants raised several concerns about the deficiencies of the existing patients’ prosthodontic record in the undergraduate clinic. They shared their ideas for designing a new patient record based on 3 key objectives: clinical, educational, and research objectives. The prosthodontic outcomes of interest and appropriate instruments as well as the clinical parameters were selected by the research group and were integrated into a new research-based record. The appropriateness of the new record has been evaluated by the same panel of experts and the necessary modifications have been carried out. The study participants agreed that the action research cycle should be continued to evaluate the feasibility of the implementation of this redesigned record in the university-based setting. Conclusion: This study is a beginning effort to develop a database in the field of removable prosthodontics. Action research is a useful research method in this process, and academic educators are well placed to conduct such research.

Submitted by ANNA KARINA FIGUEIREDO COSTA null (karina_fcosta@yahoo.com.br) on 2016-04-21T11:28:44Z No. of bitstreams: 1 Anna Karina final 20 abril 2016.pdf: 2862170 bytes, checksum: d49986540a33df5c364771ff7f6659c6 (MD5) / Approved for entry into archive by Felipe Augusto Arakaki (arakaki@reitoria.unesp.br) on 2016-05-02T16:35:35Z (GMT) No. of bitstreams: 1 costa_akf_dr_sjc.pdf: 2862170 bytes, checksum: d49986540a33df5c364771ff7f6659c6 (MD5) / Made available in DSpace on 2016-05-02T16:35:35Z (GMT). No. of bitstreams: 1 costa_akf_dr_sjc.pdf: 2862170 bytes, checksum: d49986540a33df5c364771ff7f6659c6 (MD5) Previous issue date: 2016-01-28 / Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) / O objetivo desse trabalho foi identificar por meio da utilização de geometrias complexas (pela análise de elemento finito) e simplificadas, se novas tecnologias (sistema CAD/CAM) resultam em um comportamento biomecânico mais favorável na cerâmica de cobertura quando comparado à técnica de aplicação convencional (estratificação). Foram modelados três diferentes estruturas de prótese parcial fixa de três elementos com diferentes técnicas de fabricação: convencional, Rapid Layer (feldspática, cimento resinoso e zircônia) e CAD-on (dissilicato, material vítrio de baixa fusão e zircônia) a fim de analisar a distribuição tensão de tração gerada durante um ensaio mecânico pelo método por elementos finitos. Discos (cerâmica de cobertura e zircônia) foram unidos seguindo as três diferentes técnicas (convencional, Rapid Layer e CAD-on). Foram também confeccionadas próteses parciais fixas de 3 elementos pela técnica de multicamada seguindo as mesmas configurações dos modelos utilizados na análise por elementos finitos. Essas coroas foram cicladas durante 2x106 ciclos para analisar falhas na cerâmica de cobertura, como trincas, lascamento, delaminação e falha catastrófica. Os resultados mostraram que as coroas confeccionadas com cerâmica de dissilicato de lítio e material vítreo na interface infraestrutura/cerâmica de cobertura apresentaram menor concentração de tensão de tração quando comparadas aos modelos confeccionados pela técnica convencional, que demonstraram maior concentração de tensão de tração entre as camadas (cerâmica de cobertura, interface e infraestrutura). Para os discos, o acréscimo de material na interface cerâmica de cobertura e infraestrutura mostrou maior resistência à fratura biaxial e menor propagação da trinca entre as camadas de cerâmica. As coroas cicladas não apresentaram falhas como: trincas, lascamento, delaminação e catastrófica nos primeiros 500.000 ciclos. Porém, as próteses confeccionadas com cerâmica feldspática apresentaram trincas a partir de 1x106 ciclos, diferentemente das coroas confeccionadas na técnica Rapid Layer e CAD-on. As coroas confeccionadas pela técnica RL e CAD-on podem ser consideradas um sistema favorável por prevenir a propagação de trincas radiais em direção à superfície da restauração e melhorar a tenacidade à fratura do material. / The aim was to identify whether the CAD/CAM approach resulted in more favourable stressing patterns in the veneer-ceramic when compared with a conventionally sintered Y-TZP core/veneer-ceramic. Three different designs crowns of prosthesis with three elements and different manufacturing techniques were modeled: conventional technique, Rapid Layer (feldspathic ceramic, resin cement and zirconia) and CAD-on (disilicate, fusion glass ceramic and zirconia) techniques to analyze the distribution stress tensile generated during a mechanical test by the finite element method. Moreover, were made feldspathic ceramic discs, lithium disilicate discs and Y-TZP zirconia discs to analyze the influence of biaxial flexure stress of these three different techniques. These discs (veneer ceramic and zirconia ceramic) were joined following the three different techniques (conventional, Rapid Layer and CAD-on). They were also made FPDs 3 elements: following the same design of models used in finite element analysis. These crowns were cycled during 2x106 cycles to analyze failure at veneer ceramic, such as cracks, chipping, delamination and catastrophic failure. The results showed that the crowns made from ceramic lithium disilicate and low fusion glass ceramic at the interface veneer ceramic/infraestructure showed low concentration of tensile stress when compared to models made by the conventional technique, which showed a greater concentration of tensile stress between layers (veneer ceramic, interface and infrastructure). For the discs samples, the multilayer materials showed lower crack propagation between the ceramic layers. The cycled crowns showed no failure as cracks, chipping, delamination and catastrophic failure for the first 500,000 cycles. However, the prostheses made with feldspathic ceramic showed cracks from 1.106 cycles. The incorporation of functionally and aesthetically graded layers would be realisable, considerable research would be required before the feasibility of the conceptual approach could be accurately assessed. / FAPESP: 2012/11095-0

O objetivo deste estudo foi avaliar clínica e radiograficamente implantes curtos com 5 e 6 mm de comprimento (Titamax WS Neodent/ Curitiba-Brasil) unitários instalados em região posterior de mandíbula e maxila com pouca altura óssea. Foram instalados 10 implantes em 8 pacientes devidamente selecionados a partir de critérios de inclusão pré-determinados. Os mesmos receberam carregamento protético somente após o tempo convencional de espera para a osseointegração. Seis implantes foram instalados em mandíbula e 4 implantes em maxila. Tomadas radiográficas foram realizadas para avaliação das perdas ósseas verticais e horizontais nos tempos T0 (Instalação cirúrgica), T1 (Reabertura), T2 (Instalação protética) e T3 (Acompanhamento de 6 meses). Foram avaliados parâmetros biológicos como, sangramento gengival, índice de mucosa ceratinizada, índice de placa e índice de inflamação gengival. Também foram avaliados parâmetros protéticos como proporção coroa-implante e distância mesiodistal. Apenas um implante (Titamax WS Cortical 5.0x6.0) foi perdido ainda no período de osseointegração portanto o índice de sucesso foi de 90% no período avaliado. A alteração do nível ósseo foi analisada em três períodos diferentes, da instalação cirúrgica à cirurgia de reabertura (período 1), da reabertura à instalação protética (Período 2) e da instalação protética ao controle de seis meses (Período 3). Avaliando-se a perda óssea vertical nos três períodos separadamente foram encontrados valores muito semelhantes, inclusive iguais estatisticamente (ANOVA, p<0,05). O valor de perda óssea no período 1 foi de 0,32mm; no período 2 foi de 0,22mm e no período 3 foi de 0,29mm. Isso significa que os procedimentos cirúrgicos foram igualmente causadores de perda óssea marginal mesmo tomando-se alguns cuidados na execução destas etapas. A média de perda óssea vertical e horizontal no período total de acompanhamento foi de 0,87 ±0,46 e 0,24± 0,34 respectivamente. Estes valores foram considerados dentro do intervalo de perda óssea esperado. A boa condição de saúde gengival e higiene oral descartaram a possibilidade de associação entre os índices periodontais e a perda óssea periimplantar. O teste estatístico de Regressão Linear (p<0,05) mostrou não haver relação de causa/efeito entre perda óssea e os parâmetros protéticos, apesar de elevada proporção coroa/implantes (média 1,88). Com base nos resultados encontrados neste trabalho, concluiu-se que os implantes curtos, mesmo os de comprimento 5 e 6mm, devem ser considerados como uma importante alternativa de tratamento para casos unitários. Sugere-se porém, um maior tempo clínico de acompanhamento para que seja possível traçar um perfil do comportamento destes implantes a longo prazo. / The aim of this study was to evaluate clinically and radiographically short unit implants with 5 and 6 mm in length (Titamax WS - Neodent / Curitiba, Brazil) installed in the posterior mandible and maxilla with little bone height. Ten implants were installed in eight carefully selected patients from inclusion criteria pre-determined. They received prosthetic loading only after the conventional time waiting for the osseointegration. Six implants were placed in the mandible and four implants in the maxilla. Radiographs were performed to evaluate the vertical and horizontal bone loss in T0 (surgery installation), T1 (uncovering), T2 (prosthetic installation) and T3 (follow-up of 6 months). Biological parameters were evaluated such as gingival bleeding index, keratinized mucosa amount, plaque index and gingival inflammation index. Prosthetic parameters were also evaluated as crown-implant ratio and mesiodistal distance. Only one implant (Titamax WS Cortical 5.0x6.0) was lost, it occurred during the healing fase. Therefore the success rate was 90% in the period. Bone level change was analyzed in three different periods, from surgical installation to uncovering surgery (1st period), from uncovering to prosthetic installation (2nd Period) and from prosthetic installation prosthetic to six months control (3rd Period ). Vertical bone loss values were very similar when evaluated in the three periods separately, even the same statistically (ANOVA, p <0.05). The amount of bone loss in 1st period was 0.32 mm in the 2nd period was 0.22 mm and in the 3rd period was 0.29 mm. This means that surgical procedures were also cause marginal bone loss even taking some care in implementing these steps. The average vertical and horizontal bone loss in the total period of observation was 0.87 ± 0.46 and 0.24 ± 0.34 respectively. These values were considered within the range of bone loss expected. The gingival good condition of health and oral hygiene ruled out the possibility of an association between periodontal indices and bone loss. Statistical analysis of linear regression (p <0.05) showed no cause and effect relationship between bone loss and prosthetic parameters, despite the high crown / implant ratio (average 1.88). Based on the findings of this study, it was concluded that short implants, even the 5 and 6 mm in length, should be considered as an important alternative treatment for single crows. It is suggested a longer clinical follow-up to make it possible to trace a pattern of behavior of these implants over the long term.

Submitted by Renata Lopes (renatasil82@gmail.com) on 2016-10-05T17:34:01Z No. of bitstreams: 1 mariaelizabethmarquesnogueiramartins.pdf: 1395365 bytes, checksum: 31ef7ad43e8f7a11b3fd9d2120cbdddf (MD5) / Approved for entry into archive by Diamantino Mayra (mayra.diamantino@ufjf.edu.br) on 2016-10-06T12:30:28Z (GMT) No. of bitstreams: 1 mariaelizabethmarquesnogueiramartins.pdf: 1395365 bytes, checksum: 31ef7ad43e8f7a11b3fd9d2120cbdddf (MD5) / Made available in DSpace on 2016-10-06T12:30:28Z (GMT). No. of bitstreams: 1 mariaelizabethmarquesnogueiramartins.pdf: 1395365 bytes, checksum: 31ef7ad43e8f7a11b3fd9d2120cbdddf (MD5) Previous issue date: 2009-02-27 / O objetivo deste trabalho foi avaliar a hipótese: diferentes soluções utilizadas na limpeza sônica dos precipitados do ácido fluorídrico influenciam os valores de resistência de união entre uma cerâmica feldspática e um cimento resinoso. Foram confeccionados 20 blocos cerâmicos (VITA VM7®), os quais foram duplicados em resina composta (W3D®). Os blocos foram aleatoriamente divididos em quatro grupos (n = 5): G1 – AFL 9,6% (Dentsply®) por 20 segundos seguido pela lavagem jato ar-água (60 segundos) e secagem (Controle); G2 – AFL 9,6% por 20 segundos + limpeza sônica (Vitasonic®) com água destilada por 4 minutos e secagem; G3 – AFL 9,6% por 20 segundos + limpeza sônica com acetona 99,5% e secagem; G4 – AFL 9,6% por 20 segundos + limpeza sônica com álcool 70% por 4 minutos e secagem. Posteriormente, cada bloco cerâmico, foi silanizado Porcelain Primer (Dentsply®) e unido, com o cimento resinoso Rely XTM ARC, ao seu correspondente de resina composta. Cada conjunto cerâmica-cimento-resina composta foi seccionado no sentido X e Y, obtendo-se amostras (áreas reduzidas e padronizadas), com 1,0 mm2 de área adesiva. As amostras foram fixadas em um paquímetro adaptado, que foi acoplado em uma máquina de ensaios universal (EMIC) com célula de carga de 10 Kgf, velocidade de 1,0 mm/minuto e submetidos ao ensaio de tração. Os dados foram submetidos à análise de variância (ANOVA) e ao teste de Tukey com níveis de significância de 5%. Os valores de resistência de união e os desvios-padrão (MPa) para os grupos foram: G1) 16,60 ± 0,52a; G2) 18,75 ± 0,37b; G3) 16,09 ± 0,92a e; G4)15,75 ± 1,38a. A limpeza sônica póscondicionamento resultou em diferenças significantes (p < 0.05) entre os grupos. Com base nos resultados obtidos foi possível concluir que a limpeza sônica dos precipitados do ácido fluorídrico com água destilada, aumentou os valores de resistência de união. A limpeza sônica não alterou os valores de resistência de união quando se utilizou como solução acetona 99,5% e álcool 70%. / The objective of this study was to evaluate the hypotheses: different ultrasonic cleaning media of the hydrofluoric acid precipitates influence the values of union resistance between ceramic feldspatic and resinous cement. Twenty blocks of Vita VM7 ceramic (VITA ® ) were obtained. The cementation surface of each block was duplicated in resin composite (W3D ® ). Ceramic blocks were randomly assigned in to 4 groups (n = 5/per group): G1 – etching with 9,6% AFL (Dentsply ® ) for 20s + rinsing with water spray for 60s + drying (Control); G2 – 9,6% AFL for 20s + rinsing with water spray for 60s + ultrasonic cleaning (Vitasonic ® ) in distilled water for 4 min + drying; G3 – 9,6% HF for 20s + rising with water spray for 60s + ultrasonic cleaning in acetone 99,5% 4 min + drying; G4 – 9,6% AFL for 20s + rinsing with water spray for 60s + ultrasonic cleaning in alcohol 70% for 4 min + drying . The ceramic blocks were silanized Porcelain Primer (Dentsply ® ) and cemented to the composite blocks using the resin cement RelyXTM ARC. The cemented blocks were sectioned in to axes (X and Y) with a diamond disk under coolant irrigation in order to obtain microbars with 1,0 mm² of bonding area. Each bar was attached to an adapted device and the microtensile test was performed using a universal testing machine (crosshead speed: 1 mm/min. The bond strengths and SD in Mpa were as follows: G1) 16,60 ± 0,52a; G2) 18,75 ± 0,37b; G3) 16,09 ± 0,92a e; G4)15,75 ± 1,38a. Utrasonic cleaning media after etching resulted in signifant difference among the groups (p < 0,05) (One-way ANOVA and Tuckey test). Only ultrasonic cleaning in distilled water demonstrated the highest bon strength with the tested resin-cement to feldspatic ceramic. Ultrasonic cleaning in acetone 99,5% and alcohol 70% did not affect the bond results.

It was the aim of this 24-mo randomized controlled clinical trial to investigate whether the survival of a single median implant placed in the edentulous mandible to retain a complete denture is not compromised by immediate loading. Secondary outcomes were differences in prosthetic complications between the loading principles. Each of the 158 patients who received an implant was randomly assigned to the immediate loading group (n = 81) or the delayed loading group (n = 77). Recall visits were performed 1 mo after implant placement (for only the delayed loading group) and 1, 4, 12, and 24 mo after implant loading. Nine implants failed in the immediate loading group, all within the first 3 mo of implant loading, and 1 implant failed in the delayed loading group prior to loading. Noninferiority of implant survival of the immediate loading group, as compared with the delayed loading group, could not be shown (P = 0.81). Consistent with this result, a secondary analysis with Fisher exact test revealed that the observed difference in implant survival between the treatment groups was indeed statistically significant (P = 0.019). The most frequent prosthetic complications and maintenance interventions in the mandible were retention adjustments, denture fractures, pressure sores, and matrix exchanges. There was only 1 statistically significant difference between the groups regarding the parameter “fracture of the denture base in the ball attachment area” (P = 0.007). The results indicate that immediate loading of a single implant in the edentulous mandible reveals inferior survival than that of delayed loading and therefore should be considered only in exceptional cases (German Clinical Trials Register: DRKS00003730).

Objetivo: Comparar los ángulos de convergencia oclusal (ACO) de piezas preparadas para prótesis fija unitaria empleando simulación con fantomas y con tecnología de Realidad Virtual. Materiales y métodos: El presente estudio fue de tipo experimental aleatorizado. La muestra estuvo conformada por 18 alumnos de odontología. Se realizaron 48 preparaciones dentarias para prótesis fija unitaria con la finalidad de analizar los ACO de las superficies mesio-distal (MD) y vestíbulo-palatina (VP). Se realizó una distribución aleatoria para determinar los grupos de estudio: M1: Simulación con Fantoma y M2: Simulación con tecnología de Realidad Virtual, ambos grupos realizaron evaluaciones en tres tiempos. Para la estadística descriptiva se determinó los valores de tendencia central (mediana) y valores de dispersión a través del rango intercuartílico (IQR). Para la estadística bivariada se utilizaron las pruebas estadísticas Exacta de Fisher, U de Mann Whitney y la prueba de Friedman (p<0.05). Resultados: El presente estudio no encontró diferencias estadísticamente significativas (p<0.05) en los ángulos de convergencia oclusal Mesio – Distal y Vestíbulo - Palatino, así como en los criterios de categorización analizados en las evaluaciones I, II y III de la investigación. Conclusión: No existe diferencias significativas en los ángulos de convergencia oclusal de las superficies Mesio - Distal y Vestíbulo - Palatino en dientes preparados para prótesis fija unitaria utilizando Simulación en fantomas y Simulación con tecnología de Realidad Virtual (RV). Se requiere futuras investigaciones empleando un mayor tamaño muestra. / Objective: To compare the occlusal convergence angles (ACO) of pieces prepared for unitary fixed prostheses by dental students using simulation with phantom heads and simulation with Virtual Reality technology. Materials and methods: The present study was a randomized experimental trial. The sample consisted of 18 dental students. 48 dental preparations for fixed unit prostheses were made in two different simulation technologies: physical and virtual reality to analyze the COA’s of the mesio-distal (MD) and vestibule-palatal (VP) surfaces. A random distribution was carried out to determine the study groups: Method 1 (M1; Phantom head simulation) and Method 2 (M2; Simulation with Virtual Reality Technology), both groups carried out evaluations in three times. For descriptive statistics, central tendency values ​​were determined through the median and dispersion values ​​through the interquartile range (IQR). Fisher's Exact, Mann Whitney U and Friedman's test (p <0.05) were used for bivariate statistics. Results: The present study did not find statistically significant differences (p <0.05) in the Mesio - Distal and Vestibule - Palatine occlusal convergence angles, as well as in the categorization criteria analyzed in evaluations I, II and III of the investigation. Conclusion: There are no significant differences in the occlusal convergence angles of the Mesio - Distal and Vestibule - Palatine surfaces in teeth prepared for fixed unit prostheses using phantom head simulation and simulation with Virtual Reality technology. Future research with a larger sample size is required. / Tesis

Made available in DSpace on 2014-12-17T15:43:52Z (GMT). No. of bitstreams: 1 DaniloGBF_DISSERT.pdf: 1485726 bytes, checksum: 4640fbe2db551567fc003e0585ff8950 (MD5) Previous issue date: 2013-03-22 / The aim of this study was to compare the misfit vertical, horizontal and passivity of zirconia and cobalt-chromium frameworks fabricated for CAD / CAM technology and conventional method of casting. Sixteen frameworks in one-piece, were obtained from a metallic matrix containing three Br?nemark compatible implants with regular platform (Titamax Cortical Ti, Neodent). Eight frameworks were fabricated by CAD / CAM system (NeoShape, Neodent): four in zirconia (ZirCAD) and four cobalt-chromium (CoCrcad). Eight other frameworks were obtained by conventional casting method: four cobalt-chromium with UCLA abutment premachined Co-Cr (CoCrUCci) and four cobalt-chromium with UCLA abutment castable (CoCrUCc). The fit vertical, horizontal and passivity by one-screw test were measured using scanning electron microscopy with magnification of 250x. Initially evaluated the passivity by one-screw test and subsequently to assess the vertical and horizontal misfit, tightened all the screws with a torque of 20 Ncm. Mean, standard deviation, minimum and maximum values were calculated for each group. Measurements of horizontal misfit were transformed into cumulative frequency for categorization of the variable and the group later comparison groups. To evaluate the existence of quantitative differences between the groups tested for vertical misfit and passivity, we used the Kruskal-Wallis test. The Mann-Whitney test was used to compare group to group statistical differences (p <0.05). Were observed the respective mean and standard deviation for vertical misfit and passivity in micrometers: ZirCAD (5.9 ? 3.6, 107.2 ? 36), CoCrcad (1.2 ? 2.2, 107.5 ? 26 ), CoCrUCci (11.8 ? 9.8, 124.7 ? 74), CoCrUCc (12.9 ? 11.0, 108.8 ? 85). There were statistical differences in measures of vertical misfit (p = 0.000). The Mann-Whitney test revealed statistical differences (p <0.05) between all groups except between CoCrUCci and CoCrUCc (p = 0.619). No statistical difference was observed for the passivity. In relation to the horizontal misfit groups ZirCAD and CoCrcad did not show best values in relation to CoCrUCci and CoCrUCc. Based on the results it can be concluded that frameworks fabricated by CAD / CAM technology had better values of vertical fit than those manufactured by the casting method, nevertheless, the passivity was not influenced by manufacturing technique and material used. The horizontal fit obtained by frameworks manufactured by CAD / CAM was not superior to those manufactured by casting. A lower variability in vertical adjustment and passivity was observed when frameworks were fabricated by CAD / CAM technology / O objetivo deste estudo foi comparar o desajuste vertical, horizontal e a passividade de infraestruturas fabricadas em zirc?nia e cobalto-cromo por tecnologia CAD/CAM e pelo m?todo da fundi??o convencional. Dezesseis infraestruturas em monobloco, foram obtidas a partir de uma matriz met?lica contendo tr?s implantes Br?nemark compat?veis de plataforma regular (Titamax Cortical Ti, Neodent). Oito infraestruturas foram confeccionadas pelo sistema CAD/CAM (NeoShape, Neodent): quatro em zirc?nia (Zircad) e quatro em cobalto-cromo (CoCrcad). Outras oito infraestruturas foram obtidas pelo m?todo da fundi??o convencional: quatro em cobalto-cromo com pilar UCLA cinta Co-Cr (CoCrUCci) e quatro em cobalto-cromo com pilar UCLA calcin?vel (CoCrUCc). O ajuste vertical, horizontal e a passividade pelo teste do parafuso ?nico foram mensurados usando microscopia eletr?nica de varredura com aumento de 250x. Inicialmente avaliou-se a passividade pelo teste do parafuso ?nico e posteriormente para avaliar o desajuste vertical e horizontal, apertou-se todos os parafusos, com torque de 20Ncm. M?dia, desvio padr?o, valor m?nimo e m?ximo foram calculados para cada grupo. As medidas de desajuste horizontal foram transformadas em frequ?ncia cumulativa para categoriza??o da vari?vel e posterior compara??o grupos a grupo. Para avaliar a exist?ncia de diferen?as quantitativas entre os grupos testados para desajuste vertical e passividade, foi usado o teste Kruskal-Wallis. O teste Mann-Whitney foi usado para comparar as diferen?as estat?sticas grupo a grupo (p<0,05). Foram observados os respectivos valores de m?dia e desvio padr?o em micr?metros para desajuste vertical e passividade: Zircad (5,9 ? 3,6; 107,2? 36), CoCrcad (1,2 ? 2,2; 107,5? 26), CoCrUCci (11,8 ? 9,8; 124,7? 74), CoCrUCc (12,9 ? 11,0; 108,8? 85). Observaram-se diferen?as estat?sticas para medidas de desajuste vertical (p=0,000). O teste Mann-Whitney revelou diferen?as estat?sticas (p<0,05) entre todos os grupos, exceto entre CoCrUCci e CoCrUCc (p=0,619). Nenhuma diferen?a estat?stica foi observada para a passividade das infraestruturas. Em rela??o ao desajuste horizontal, os grupos ZirCAD e CoCrcad n?o apresentaram melhores valores em rela??o a CoCrUCci e CoCrUCc. Baseado nos resultados pode-se concluir que infraestruturas confeccionadas por tecnologia CAD/CAM obtiveram melhores valores de ajuste vertical que aquelas fabricadas pelo m?todo da fundi??o, apesar disso, a passividade das infraestruturas n?o foi influenciada pela t?cnica de fabrica??o e material utilizado. O ajuste horizontal obtido pelas infraestruturas fabricadas por CAD/CAM n?o foi superior ?quelas fabricadas por fundi??o. Uma menor variabilidade no ajuste vertical e na passividade foi observada quando infraestruturas foram fabricadas por tecnologia CAD/CAM