Página 1 dos resultados de 329 itens digitais encontrados em 0.005 segundos

Desenvolvimento de plataforma elíptica osseointegrável para implante dentário, guias de perfuração e técnica cirúrgica de implantação - estudo em fêmures de cães; Development of osseointegrated elliptic platform for dental implant, surgical guides and surgical technique of implantation study in femurs of dogs

Ferreira, Jonathan
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Dissertação de Mestrado Formato: application/pdf
Publicado em 10/02/2009 PT
Relevância na Pesquisa
37.503232%
O objetivo deste estudo foi desenvolver um implante dentário para utilização em cães, com formato semelhante aos dentes bi-radiculares destes animais e a técnica cirúrgica para sua implantação, com características que permitam a osseointegração. O implante é composto por três peças, dois implantes cônicos rosqueados unidos à plataforma elíptica cônica por parafusos e implantados abaixo do nível ósseo. Foram utilizados 20 fêmures de cães para o desenvolvimento deste projeto e os implantes foram colocados na região epifisária destes ossos. A perfuração foi guiada através de três tipos de guias cirúrgicas confeccionadas em alumínio com dimensões compatíveis a dos implantes e das plataformas. A osteotomia foi avaliada com mensurações diretas e a adaptação do implante foi avaliada radiograficamente. O implante desenvolvido é bastante semelhante à porção radicular dos dentes bi-radiculares dos cães. A técnica cirúrgica de perfuração e osteotomia foi eficiente e a avaliação radiográfica revelou boa adaptação entre as peças e paralelismo entre os implantes rosqueados. Essas conclusões permitem sugerir que, seguindo esta metodologia, com a plataforma confeccionada em liga de titânio, este tipo de implante deve se osteointegrar ao osso adjacente.; The aim of this study was to develop a dental implant for use in dogs with similar format to the biradicular teeth of these animals and surgical technique for its implantation...

Descontaminação da superfície de implantes dentários por meio da terapia fotodinâmica; Decontamination of dental implants surfaces by photodynamic therapy

Marotti, Juliana
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Dissertação de Mestrado Formato: application/pdf
Publicado em 19/01/2009 PT
Relevância na Pesquisa
47.16345%
As lesões da periimplantite se não tratadas propriamente podem levar à reabsorção óssea e conseqüente perda do implante. Os implantes com superfície rugosa apresentam melhor resposta do tecido ósseo e melhor ancoragem, entretanto facilitam a formação de biofilme sobre sua superfície, dificultando o tratamento da periimplantite. Diversos métodos de limpeza da superfície do implante têm sido descritos, porém podem danificar sua superfície ou gerar resistência a longo prazo. A terapia fotodinâmica (PDT) surge como uma opção viável e de baixo custo para o tratamento da periimplantite. O objetivo deste estudo in vitro foi analisar a descontaminação bacteriana da superfície de implantes por meio da terapia fotodinâmica. 60 implantes dentários (TiUnite Nobel) foram igualmente divididos (n=10) em 4 grupos e 2 subgrupos. Em G1 não houve descontaminação (controle negativo), enquanto em G2 realizou-se a descontaminação pelo método tradicional com gluconato de clorexidina a 0,12% (controle positivo). G3 (PDT laser+corante) e G4 (sem corante) foram divididos em dois subgrupos cada, sendo que em G3a e G4a utilizou-se a PDT por 3 minutos, G3b e G4b por 5 minutos. Após 5 minutos em contato com o corante azul de metileno a 0...

Transplante de germe dental: estudo da correlação entre posição do implante, presença de tecido ósseo no leito receptor e fase de desenvolvimento do germe transplantado com possível neoformação de tecido nervoso e vascular na polpa dental; Correlation between position of implantation, presence of bone and tooth development stage in the moment of the transplant with nervous and vascular development in transplanted teeth

Daltoé, Felipe Perozzo
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Dissertação de Mestrado Formato: application/pdf
Publicado em 06/05/2010 PT
Relevância na Pesquisa
38.177622%
A odontologia moderna, mesmo usando as suas técnicas mais primorosas, na prática, ainda recupera a perda dental com implantes metálicos recobertos por coroas protéticas. Há um empenho coletivo dos cientistas em criar técnicas de desenvolvimento dental in vitro na busca por maneiras de recuperar, de maneira biológica, a ausência dental. Já é possível criar estruturas similares a dentes a partir de células-tronco de origem dental (polpa de dentes permanentes e decíduos) e não dental (células-tronco embrionárias, células-tronco da medula óssea e da crista neural) por meio de recombinação dos tecidos epiteliais e mesenquimais de germes dentais. As técnicas de reconstrução tecidual nunca estiveram tão perto do desenvolvimento da terceira dentição mas a ciência ainda tem muito a aprender no que concerne o estudo da biologia dental e engenharia de tecidos. Não basta saber como um dente se desenvolve; há de se entender como ele interage com o organismo do qual faz ou fará parte. É com esta preocupação que nos propomos a estudar se pode haver uma correlação entre o desenvolvimento do sistema nervoso e vascular de um germe dental transplantado com a posição que ele é implantado e/ou com a presença de tecido ósseo que no leito receptor. Ademais...

Implante de células-tronco de polpa dentária humana associadas à biomateriais para o reparo de lesões em joelhos de ovinos; Implantation of stem cells from human dental pulp associated with biomaterials in joint damage in sheep

Silva, Marcos Vinícius Mendes
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Dissertação de Mestrado Formato: application/pdf
Publicado em 13/07/2011 PT
Relevância na Pesquisa
37.599954%
A terapia celular com células-tronco (CT) surgiu nos últimos anos como uma esperança para o tratamento de doenças, sem tratamento efetivo, como a osteoartrite (OA) em joelho. Nesse trabalho utilizamos células-tronco imaturas de polpa dentária humana (CTPD) cultivadas ou não em associação com biomateriais para o tratamento de lesões osteoarticulares em joelhos de ovinos. As CTPD humanas foram transduzidas com o gene repórter, EGFP, facilitando o monitoramento das mesmas in vitro e in vivo, após o implante na articulação femorotibiopatelar de ovinos. A capacidade de adesão e acomodação das células de polpa dentária no biomaterial foi observada in vitro 24 horas e um mês após sua aplicação no mesmo, sendo a viabilidade celular semelhante em ambos os períodos, porém com uma maior dispersão celular no período mais longo, segundo as análises realizadas por técnicas de microscopia eletrônica de varredura e histologia. Ainda para a realização das análises histológicas, foram realizadas técnicas para padronizar os métodos de descalcificação e inclusão do tecido ósseo-articular, prévio aos cortes. Exames radiográficos, ultrassonográficos e artroscópicos foram feitos para acompanhar a evolução dos tratamentos. Os resultados revelaram que as CTPD humanas aderem bem ao biomaterial e que em associação possuem uma excelente capacidade aparente de reconstituição do tecido lesado. Com a realização deste trabalho...

Success rate of immediate nonfunctional loaded single-tooth implants: Immediate versus delayed implantation

Ribeiro, Fernando Salimon; Pontes, Ana Emilia Farias; Marcantonio, Elcio; Piattelli, Adriano; Neto, Rodolfo Jorge Boeck; Marcantonio, Elcio
Fonte: Lippincott Williams & Wilkins Publicador: Lippincott Williams & Wilkins
Tipo: Artigo de Revista Científica Formato: 109-117
ENG
Relevância na Pesquisa
37.524045%
Purpose: The aim of this study was to evaluate the success rate of maxillary immediate nonfunctional single-tooth loaded implants used into fresh extraction sites (immediate placement condition) or healed ridge (delayed placement condition).Materials and Methods: Eighty-two dental implants were placed in the maxilla of 64 consecutive patients from Private practice office and from a specialization course in Implantology. Forty-six implants were inserted under immediate placement condition, and 36 were inserted under delayed placement condition. The criteria used to evaluate success rate were those previously described by Albrektsson and Zarb (Int J Prosthodont 1993;6: 95-105), and follow-up period ranged from 18.0 to 39.7 months.Results: Seventy-nine implants fulfilled the success rate criteria (96.3%). Moreover, differences concerning implantation condition were not significant (P = 0.33, Qui-square test): three of the failed implants were from immediate placement group (success rate of 93.5%), and none was from delayed placement group (success rate of 100.0%).Conclusion: In the present sample, no statistically significant differences were detected for immediate nonfunctional single-tooth loaded implants under immediate placement condition in comparison with those inserted under delayed placement condition; both protocols had high success rate in maxillary incisors...

Use of dental implants in children: A literature review

Percinoto, Célio; De Mello Vieira, Ana Elisa; Barbieri, Cíntia Megid; Melhado, Fabíola Lemos; Moreira, Karina Silva
Fonte: Universidade Estadual Paulista Publicador: Universidade Estadual Paulista
Tipo: Artigo de Revista Científica Formato: 381-383
ENG
Relevância na Pesquisa
47.77657%
The aim of this literature review is to discuss the use of dental implants in growing patients and the influence of maxillary and mandibular skeletal and dental growth on the stability of those implants. It is recommended to wait for the completion of dental and skeletal growth, except for severe cases of ectodermal dysplasia.

Microbiologic and radiographic analysis of ligature-induced peri-implantitis with different dental implant surfaces

Shibli, Jamil Awad; Martins, Marilia Compagnoni; Lotufo, Roberto Fraga Moreira; Marcantonio Jr., Elcio
Fonte: Universidade Estadual Paulista Publicador: Universidade Estadual Paulista
Tipo: Artigo de Revista Científica Formato: 383-390
ENG
Relevância na Pesquisa
37.665474%
Purpose: The goal of this study was to evaluate microbiota and radiographic peri-implant bone loss associated with ligature-induced peri-implantitis. Materials and Methods: Thirty-six dental implants with 4 different surfaces (9 commercially pure titanium, 9 titanium plasma-sprayed, 9 hydroxyapatite, and 9 acid-etched) were placed in the edentulous mandibles of 6 dogs. After 3 months with optimal plaque control, abutment connection was performed. On days 0, 20, 40, and 60 after placement of cotton ligatures, both microbiologic samples and periapical radiographs were obtained. The presence of Actinobacillus actinomycetemcomitans, Porphyromonas gingivalis, Prevotella intermedia/nigrescens, Campylobacter spp, Capnocytophaga spp, Fusobacterium spp, beta-hemolytic Streptococcus, and Candida spp were evaluated culturally. Results: P intermedia/nigrescens was detected in 13.89% of implants at baseline and 100% of implants at other periods. P gingivalis was not detected at baseline, but after 20 and 40 days it was detected in 33.34% of implants and at 60 days it was detected in 29.03% of dental implants. Fusobacterium spp was detected in all periods. Streptococci were detected in 16.67% of implants at baseline and in 83.34%, 72.22%, and 77.42% of implants at 20...

The influence of diabetes mellitus and insulin therapy on biomechanical retention around dental implants: a study in rabbits.

Margonar, Rogério; Sakakura, Celso E; Holzhausen, Marinella; Pepato, Maria Teresa; Alba, júnior Rodolfo Cândia; Marcantonio, júnior Elcio
Fonte: Universidade Estadual Paulista Publicador: Universidade Estadual Paulista
Tipo: Artigo de Revista Científica Formato: 333-339
ENG
Relevância na Pesquisa
47.665474%
The oral rehabilitation by dental implants in patients with diabetes remains a controversial issue. The aim of this study was to evaluate the influence of diabetes mellitus and insulin therapy on the bone healing around dental implants using torque removal. Twenty-seven rabbits were randomly divided into 3 groups with 9 animals each: control (C) group, induced diabetic (D) group, and insulin-treated diabetic (ITD) group (10 U/day). After 1 week, one implant was inserted at the tibial metaphysis of the animals. The glucose levels were periodically evaluated through the glucose-oxidase enzymatic method. The animals were killed at 4, 8, and 12 weeks after surgery and the biomechanical test was performed using a torque manometer. Statistically significant differences regarding the removal torque of the implant could not be found at 4 weeks (P = 0.2) among groups. Group C showed statistically higher values than groups D and ITD at the experimental periods of 8 (P = 0.0001 and P = 0.0002, respectively) and 12 weeks (P = 0.0053 and P = 0.001, respectively). There were no statistical differences between D and ITD groups in any of the experimental periods. Diabetes mellitus has negatively influenced the mechanical retention of implants placed at the tibial metaphysis of rabbits. Therapy with insulin did not induce any changes.

Experimental peri-implant tissue breakdown around different dental implant surfaces: Clinical and radiographic evaluation in dogs

Martins, Marilia Compagnoni; Abi-Rached, Ricardo Samih Georges; Shibli, Jamil Awad; Araujo, Marcelo Werneck Barata; Marcantonio Jr., Elcio
Fonte: Universidade Estadual Paulista Publicador: Universidade Estadual Paulista
Tipo: Artigo de Revista Científica Formato: 839-848
ENG
Relevância na Pesquisa
47.79908%
Purpose: Tissue reactions to 4 different implant surfaces were evaluated in regard to the development and progression of ligature-induced peri-implantitis. Materials and Methods: In 6 male mongrel dogs, a total of 36 dental implants with different surfaces (9 titanium plasma-sprayed, 9 hydroxyapatite-coated, 9 acid-etched, and 9 commercially pure titanium) were placed 3 months after mandibular premolar extraction. After 3 months with optimal plaque control, abutment connection was performed. Forty-five days later, cotton ligatures were placed around the implants to induce peri-implantitis. At baseline and 20, 40, and 60 days after placement, the presence of plaque, peri-implant mucosal redness, bleeding on probing, probing depth, clinical attachment loss, mobility, vertical bone loss, and horizontal bone loss were assessed. Results: The results did not show significant differences among the surfaces for any parameter during the study (P > .05). All surfaces were equally susceptible to ligature-induced peri-implantitis over time (P < .001). Correlation analysis revealed a statistically significant relationship between width of keratinized tissue and vertical bone loss (r 2 = 0.81; P = .014) and between mobility and vertical bone loss (r 2 = 0.66; P = .04)...

The effect of CO 2 laser irradiation on failed implant surfaces

Shibli, Jamil Awad; Theodoro, Letícia Helena; Haypek, Patricia; Garcia, Valdir Gouveia; Marcantonio Jr., Elcio
Fonte: Universidade Estadual Paulista Publicador: Universidade Estadual Paulista
Tipo: Artigo de Revista Científica Formato: 342-351
ENG
Relevância na Pesquisa
37.748572%
The aim of this investigation was to evaluate the cleaning effect of CO 2 on surface topography and composition of failed dental implant surfaces. Ten failed dental implants were retrieved from nine patients (mean age, 46.33 ± 5.81 years) as a result of early or late failure. The implants were divided into two parts: one side of the implant was irradiated with a CO 2 laser (test side), while the other side did not receive irradiation (control side). The CO 2 laser was operated at 1.2 W in a continuous wave for 40 seconds (40 J energy). The handpiece of the CO 2 laser was kept at a distance of 30 mm from the implant surface, resulting in a spot area of 0.031415 cm 2 (38.20 W/cm 2; 1559 J/cm 2) in scanning mode (cervical-apical). One unused dental implant was used as a negative control for both groups. All implant surfaces were examined by scanning electron mi croscopy (SEM) and energy-dispersive spectrometer x-ray (EDS) for element analysis. SEM showed that the surface of the test sides consisted of different degrees of organic residues, appearing mainly as dark stains similar to those observed on the control sides. None of the test surfaces presented alterations such as crater-like alterations, lava-like layers, or melting compared with the nonirradiated surfaces. Foreign elements such as carbon...

Histological findings following the use of a space-making device for bone reformation and implant integration in the maxillary sinus of primates

Cricchio, Giovanni; Palma, Vinícius Canavarros; Faria, Paulo E. P.; Oliveira, José Américo de; Lundgren, Stefan; Sennerby, Lars; Salata, Luiz A.
Fonte: Universidade Estadual Paulista Publicador: Universidade Estadual Paulista
Tipo: Artigo de Revista Científica
ENG
Relevância na Pesquisa
37.599954%
Background: Previous studies have shown that membrane elevation results in predictable bone formation in the maxillary sinus provided that implants can be placed as tent poles. In situations with an extremely thin residual crest which impairs implant placement, it is possible that a space-making device can be used under the sinus membrane to promote bone formation prior to placement of implants. Purpose: The present study was conducted to test the hypothesis that the use of a space-making device for elevation of the sinus membrane will result in predictable bone formation at the maxillary sinus floor to allow placement of dental implants. Materials and Methods: Eight tufted capuchin primates underwent bilateral sinus membrane elevation surgery, and a bioresorbable space-making device, about 6 mm wide and 6 mm in height, was placed below the elevated membrane on the sinus floor. An oxidized implant (Nobel Biocare AB, Gothenburg, Sweden) was installed in the residual bone protruding into the created space at one side while the other side was left without an implant. Four animals were sacrificed after 6 months of healing. The remaining four animals received a second implant in the side with a space-making device only and followed for another 3 months before sacrifice. Implant stability was assessed through resonance frequency analysis (RFA) using the Osstell™ (Osstell AB...

Histologic and biomechanical evaluation of 2 resorbable-blasting media implant surfaces at early implantation times

Marin, Charles; Bonfante, Estevam A.; Jeong, Ryan; Granato, Rodrigo; Giro, Gabriela; Suzuki, Marcelo; Heitz, Claiton; Coelho, Paulo G.
Fonte: Universidade Estadual Paulista Publicador: Universidade Estadual Paulista
Tipo: Artigo de Revista Científica Formato: 445-453
ENG
Relevância na Pesquisa
37.890776%
This study evaluated 3 implant surfaces in a dog model: (1) resorbable-blasting media + acid-etched (RBMa), alumina-blasting + acid-etching (AB/AE), and AB/AE + RBMa (hybrid). All of the surfaces were minimally rough, and Ca and P were present for the RBMa and hybrid surfaces. Following 2 weeks in vivo, no significant differences were observed for torque, bone-to-implant contact, and bone-area fraction occupied measurements. Newly formed woven bone was observed in proximity with all surfaces.

Review of follow-up of clinical success of implant-supported complete dental prostheses

GRECO,Gustavo Diniz; FREITAS,Amanda Beatriz Dahdah Aniceto de; MAGALHÃES,Cláudia Silami de; MOREIRA,Allyson Nogueira
Fonte: Faculdade São Leopoldo Mandic Publicador: Faculdade São Leopoldo Mandic
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/09/2014 EN
Relevância na Pesquisa
47.32569%
OBJECTIVE: The aim of this study was to assess the clinical success rate of implant-supported complete dental prostheses, which are being used as a feasible alternative in planning of oral rehabilitation. Over the years, the two-stage surgical protocol has increasingly been replaced by immediate loading procedures, especially in the mandibular anterior region in cases of rehabilitation of completely edentulous patients. This procedure has become feasible due to the high success rate of the technique with very satisfactory results. METHODS: By means of a literature review focused on published articles with clinical follow-up between 8 and 15 years. RESULTS: Implants placed in the mandible had higher success rates than those inserted in the maxilla. Cases with longer follow-up periods, 15 years, showed higher success rates in comparison with follow-up periods of 8 and 10 years. CONCLUSION: Success rates of implant-supported complete dental prostheses are very high.

Relation between bruxism and dental implants

TORCATO,Leonardo Bueno; ZUIM,Paulo Renato Junqueira; BRANDINI,Daniela Atili; FALCÓN-ANTENUCCI,Rosse Mary
Fonte: Faculdade São Leopoldo Mandic Publicador: Faculdade São Leopoldo Mandic
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/12/2014 EN
Relevância na Pesquisa
47.37301%
OBJECTIVE: The aim of this study was to gather information and discuss the predictability of implant-supported prostheses in patients with bruxism by performing a literature review. METHODS: In order to select the studies included in this review, a detailed search was performed in PubMed and Medline databases, using the following key words: bruxism, dental implants, implant supported prosthesis, and dental restoration failure. Items that were included are: case reports, randomized controlled trials, in vitro studies, literature and systematic reviews, with or without meta-analysis, of the last 20 years that addressed the theme. Articles without abstracts, animal studies, articles in languages other than English and articles from journals unrelated to the dental field were excluded. RESULTS: after analysis according to inclusion and exclusion criteria, 28 articles were selected from a total of 54. It is known from the array of scientific articles which have assessed, either through retrospective, prospective or experimental studies, that the biomechanical and biological impact of bruxism on implant-supported prostheses is small, and that the literature has contributed little to exemplify the prosthetic limits of safety for the specialist from a clinical point of view. CONCLUSION: Although there is still no general consensus on this matter...

Angiographic embolization for hemorrhage control after dental implantation

Hwang, Hee-Don; Kim, Jin-Wook; Kim, Yong-Sun; Kang, Dong-Hun; Kwon, Tae-Geon
Fonte: The Korean Association of Oral and Maxillofacial Surgeons Publicador: The Korean Association of Oral and Maxillofacial Surgeons
Tipo: Artigo de Revista Científica
EN
Relevância na Pesquisa
47.346064%
Dental implantation in the mandibular anterior region is considered a safe and reliable surgical procedure. On the other hand, several articles have reported that inadvertent hemorrhage of the sublingual artery can result in life-threatening airway obstruction. Surgical ligation under intubation or tracheostomy is the most widely used approach for controlling mouth floor bleeding in this highly vascular region. Nonetheless, surgically exploring the bleeding focus is difficult because of anatomical distortion followed by widespread edema and swelling. Since swelling of the mouth floor advances quickly, timely management is essential for favorable postoperative outcome. This paper reports a case of immediate hemorrhage control with angiographic embolization to perform rapid hemostasis before the ongoing swelling causes airway obstruction. Less invasive, angiographic embolization can prevent neurovascular damage during a surgical exploration of injured vascular structures on the mouth floor.

Association between implant apex and sinus floor in posterior maxilla dental implantation: A three-dimensional finite element analysis

YAN, XU; ZHANG, XINWEN; CHI, WEICHAO; AI, HONGJUN; WU, LIN
Fonte: D.A. Spandidos Publicador: D.A. Spandidos
Tipo: Artigo de Revista Científica
EN
Relevância na Pesquisa
47.524043%
The aim of the present study was to evaluate the effect of the association between the implant apex and the sinus floor in posterior maxilla dental implantation by means of three-dimensional (3D) finite element (FE) analysis. Ten 3D FE models of a posterior maxillary region with a sinus membrane and different heights of alveolar ridge with different thicknesses of sinus floor cortical bone were constructed according to anatomical data of the sinus area. Six models were constructed with the same thickness of crestal cortical bone and a 1-mm thick sinus floor cortical bone, but differing heights of alveolar ridge (between 10 and 14 mm). The four models of the second group were similar (11-mm-high alveolar ridge and 1-mm-thick crestal cortical bone) but with a changing thickness of sinus floor cortical bone (between 0.5 and 2.0 mm). The standard implant model based on the Nobel Biocare® implant system was created by computer-aided design (CAD) software and assembled into the models. The materials were assumed to be isotropic and linearly elastic. An inclined force of 129 N was applied. The maximum von Mises stress, stress distribution, implant displacement and resonance frequencies were calculated using CAD software. The von Mises stress was concentrated on the surface of the crestal cortical bone around the implant neck with the exception of that for the bicortical implantation. For immediate loading...

University teaching of implant dentistry: guidelines for education of dental undergraduate students and general dental practitioners. An Australian consensus document

Mattheos, N.; Ivanovski, S.; Heitz-Mayfield, L.; Klineberg, I.; Sambrook, P.; Scholz, A.
Fonte: Australian Dental Assn Inc Publicador: Australian Dental Assn Inc
Tipo: Artigo de Revista Científica
Publicado em //2010 EN
Relevância na Pesquisa
47.84615%
N Mattheos, S Ivanovski, L Heitz-Mayfield, I Klineberg, P Sambrook and S Scholz; Also published as a book chapter: Proceedings of the Australian Consensus Workshop on Implant Dentistry University Education, held on the Gold Coast, Australia 4-6 February 2010: pp.329-332

In vitro analysis of the influence of surface treatment of dental implants on primary stability

Mazzo, Carla Rodrigues; Reis, Andrea Candido dos; Shimano, Antonio Carlos; Valente, Mariana Lima da Costa
Fonte: SOCIEDADE BRASILEIRA DE PESQUISA ODONTOLOGICA; SAO PAULO Publicador: SOCIEDADE BRASILEIRA DE PESQUISA ODONTOLOGICA; SAO PAULO
Tipo: Artigo de Revista Científica
ENG
Relevância na Pesquisa
47.16345%
Surface treatment interferes with the primary stability of dental implants because it promotes a chemical and micromorphological change on the surface and thus stimulates osseointegration. This study aimed to evaluate the effects of different surface treatments on primary stability by analyzing insertion torque (IT) and pullout force (PF). Eight samples of implants with different surface treatments (TS - external hexagon with acid surface treatment; and MS - external hexagon, machined surface), all 3.75 mm in diameter x 11.5 mm in length, were inserted into segments of artificial bones. The IT of each sample was measured by an electronic torquemeter, and then the pullout test was done with a universal testing machine. The results were subjected to ANOVA (p < 0.05), followed by Tukey's test (p < 0.05). The IT results showed no statistically significant difference, since the sizes of the implants used were very similar, and the bone used was not highly resistant. The PF values (N) were, respectively, TS = 403.75 +/- 189.80 and MS = 276.38 +/- 110.05. The implants were shown to be different in terms of the variables of maximum force (F = 4.401, p = 0.0120), elasticity in maximum flexion (F = 3.672, p = 0.024), and relative stiffness (F = 4.60...

Delirium During Intravenous Sedation With Midazolam Alone and With Propofol in Dental Treatment

Mohri-Ikuzawa, Y; Inada, H; Takahashi, N; Kohase, H; Jinno, S; Umino, M
Fonte: American Dental Society of Anesthesiology Publicador: American Dental Society of Anesthesiology
Tipo: Artigo de Revista Científica
Publicado em //2006 EN
Relevância na Pesquisa
47.16345%
A 62-year-old man visited our clinic for dental implantation under intravenous sedation. He demonstrated increased psychomotor activity and incomprehensible verbal contact during intravenous sedation. Although delirium caused by midazolam or propofol in different patients has been reported, the present case represents a delirium that developed from both drugs in the same patient, possibly because of the patient's smaller tolerance to midazolam and propofol.

In vitro analysis of the influence of surface treatment of dental implants on primary stability

Mazzo,Carla Rodrigues; Reis,Andréa Cândido dos; Shimano,Antonio Carlos; Valente,Mariana Lima da Costa
Fonte: Sociedade Brasileira de Pesquisa Odontológica - SBPqO Publicador: Sociedade Brasileira de Pesquisa Odontológica - SBPqO
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/08/2012 EN
Relevância na Pesquisa
47.16345%
Surface treatment interferes with the primary stability of dental implants because it promotes a chemical and micromorphological change on the surface and thus stimulates osseointegration. This study aimed to evaluate the effects of different surface treatments on primary stability by analyzing insertion torque (IT) and pullout force (PF). Eight samples of implants with different surface treatments (TS - external hexagon with acid surface treatment; and MS - external hexagon, machined surface), all 3.75 mm in diameter X 11.5 mm in length, were inserted into segments of artificial bones. The IT of each sample was measured by an electronic torquemeter, and then the pullout test was done with a universal testing machine. The results were subjected to ANOVA (p < 0.05), followed by Tukey's test (p < 0.05). The IT results showed no statistically significant difference, since the sizes of the implants used were very similar, and the bone used was not highly resistant. The PF values (N) were, respectively, TS = 403.75 ± 189.80 and MS = 276.38 ± 110.05. The implants were shown to be different in terms of the variables of maximum force (F = 4.401, p = 0.0120), elasticity in maximum flexion (F = 3.672, p = 0.024), and relative stiffness (F = 4.60...