Physicochemical and microscopic characterization of implant-abutment joints

Lopes, Patricia A.; Carreiro, Adriana da Fonte Porto; Nascimento, Rubens Maribondo do; Vahey, Brendan R.; Henriques, Bruno; Souza, Júlio C. M.

doi:10.4103/ejd.ejd_3_17

Cited by 16 publications

(17 citation statements)

References 26 publications

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“…The mismatch between implant and abutment components (micro-gap) can be increased by micromotion phenomena under functional loading, which could result in increased friction, microleakage, material wear, titanium particle release and screw loosening [ 68 , 71 , 72 , 73 , 74 , 75 , 76 , 77 , 78 , 79 , 80 ]. Braian et al [ 71 ] evaluated the horizontal micro-gap between abutments and implants with external and internal hexagonal connections.…”

Section: Resultsmentioning

confidence: 99%

“…The physicochemical and microscopic characteristics of different implant-abutment configurations were evaluated, and without exception, defects from 0.5 to 5.6 μm were present in all the samples. Therefore, the original micro-gap between the parts can lead to micromotion and wear, the release of more particles, the penetration of oral fluids and bacteria into the connection, the initiation of corrosion, as well as potential late failures [ 68 , 76 , 77 , 78 , 79 , 80 ].…”

Section: Resultsmentioning

confidence: 99%

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Potential Causes of Titanium Particle and Ion Release in Implant Dentistry: A Systematic Review

Delgado-Ruíz

Romanos

2018

IJMS

167

143

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Implant surface characteristics, as well as physical and mechanical properties, are responsible for the positive interaction between the dental implant, the bone and the surrounding soft tissues. Unfortunately, the dental implant surface does not remain unaltered and changes over time during the life of the implant. If changes occur at the implant surface, mucositis and peri-implantitis processes could be initiated; implant osseointegration might be disrupted and bone resorption phenomena (osteolysis) may lead to implant loss. This systematic review compiled the information related to the potential sources of titanium particle and ions in implant dentistry. Research questions were structured in the Population, Intervention, Comparison, Outcome (PICO) framework. PICO questionnaires were developed and an exhaustive search was performed for all the relevant studies published between 1980 and 2018 involving titanium particles and ions related to implant dentistry procedures. Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines were followed for the selection and inclusion of the manuscripts in this review. Titanium particle and ions are released during the implant bed preparation, during the implant insertion and during the implant decontamination. In addition, the implant surfaces and restorations are exposed to the saliva, bacteria and chemicals that can potentially dissolve the titanium oxide layer and, therefore, corrosion cycles can be initiated. Mechanical factors, the micro-gap and fluorides can also influence the proportion of metal particles and ions released from implants and restorations.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Potential Causes of Titanium Particle and Ion Release in Implant Dentistry: A Systematic Review

Delgado-Ruíz

Romanos

2018

IJMS

167

143

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“…No entanto, os valores médios dos microgaps foram bem maiores do que o presente trabalho de pesquisa e isto pode ser explicado pelo fato de os implantes serem de marcas e design diferentes. No trabalho de Lopes et al 20 , que utilizaram implantes do tipo Cone Morse da Neodent®, apresentaram-se valores médios maiores do que os verificados em nossa pesquisa. Contudo, os valores máximo e mínimo foram semelhantes.…”

Section: Discussionunclassified

“…A preparação das amostras iniciou-se seguindo a orientação do fabricante: os munhões retos foram adaptados, com torque de 32 N/cm 2 , ao implante. Após isso, imergiram-se todas as amostras em cubos de Resina Epóxi ES260, a fim de se confeccionar uma base que permitisse a secção longitudinal 19,20 , que foi realizada na cortadora de precisão Struers Minitom (Struers Inc.Cleveland, USA), com o disco de corte diamantado sob refrigeração (Figura 1). A secção longitudinal de todas as amostras foi refinada até que cerca de 50% do volume tivesse sido removido com lixas d'água de diferentes granulações de nº 80 a 1.600 (3M, São Paulo, Brasil) e, em seguida, realizou-se polimento com feltro e pasta de alumínio.…”

Section: Preparo Da Amostraunclassified

Avaliação da interface entre o componente protético reto e a conexão interna tipo Cone Morse do implante dentário por meio da microscopia eletrônica de varredura

Costa

Ferreira

Takeshita

et al. 2020

Rev. odontol. UNESP

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Resumo Introdução A interface implante-pilar protético e a formação dos seus microgaps são aspectos relevantes na transferência das cargas e na resposta biológica, estando ligadas ao sucesso da reabilitação. Objetivo Avaliar microgaps na interface entre a conexão interna do implante do tipo Cone Morse e a superfície do componente protético por meio da microscopia eletrônica de varredura (MEV). Material e método Foram utilizados 20 implantes dentários de tamanho 3,75 × 11,0mm do tipo Cone Morse com seus respectivos pilares protéticos da Singular® (Singular Implants, RN, Brasil). Os munhões retos foram acoplados aos implantes com torque de 32N/cm2 e o conjunto resultante foi emergido em base de Resina Epóxi ES260, para permitir secção longitudinal da amostra. As amostras foram analisadas e os microgaps mensurados no MEV (JEOL JCM-5700, MA, USA), e posteriormente os dados foram analisados. Resultado A média e o desvio padrão dos maiores microgaps foram observados na parte apical do implante nos lados direito e esquerdo, sendo 1,44±2,68 e 1,16±1,49 μm, respectivamente. Os menores microgaps foram na parte superior do implante nos lados direito e esquerdo, sendo 0,60±0,73 e 0,66±0,67 μm, respectivamente. Contudo, no teste de Kruskal-Wallis, não houve diferença estatisticamente significativa entre as regiões dos implantes, tanto para o lado esquerdo (p=0,692) como para o direito (p=0,865). No teste de Mann-Whitney, não houve diferenças estatisticamente significativas entre os lados para as diferentes regiões dos implantes. Conclusão Mesmo com a presença de microgaps na interface implante-pilar protético, estes apresentam tamanho inferior ao que causaria problemas biológicos e mecânicos. As amostras analisadas quanto à sua compatibilidade de encaixe foram satisfatórias.

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“…In fact, in previous studies, ordinary observations were carried out by sectioning the samples with microtomes or by electroerosion. Such methods gave rise to considerable artifacts due to the metal surface deformation of the samples occurring in the area where the gap is present and connected with the action of milling or the electroerosion itself ( 13 ).…”

Section: Discussionmentioning

confidence: 99%

Measurement of gap between abutment and fixture in dental conical connection implants. A focused ion beam SEM observation

F¹,

Patini²,

Peñarrocha‐Oltra³

et al. 2020

Med Oral

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Background The aim of the authors was to examine the abutment-fixture interface in Morse-type conical implants in order to verify gaps at this level using a new microscopical approach. Material and Methods In this in vitro study, 20 abutment-fixture complexes were prepared by sectioning (longitudinal and cross-sectional to the long axis) with a microtome and then with a focused ion beam (FIB). This is a micrometric machine tool that uses gallium ions to abrade circumscribed areas to dig deeper into the cuts obtained with the microtome in order to eliminate cut-induced artifacts. This is because the FIB abrasion is practically free from artifacts, which are normally generated by the action of the microtome blades or other techniques. Samples were then observed by scanning electron microscopy (SEM). Results The observation of the abraded parts with the FIB permitted measurement of the real gap between the implant-abutment components. A variable amount of gap was retrieved (from 0 to 3 μm) by the observations, confirming the non-hermetic nature of the connection. It has to be pointed out that in approximately 65% of cases, the gap accounted for less than 1 μm. Conclusions The reported data confirmed that the analyzed connection system allowed for minimal gap. However, from the evidence of the present analysis, it cannot be assumed that the 2 parts of a Morse-type conical implant are fused in 1 piece, which would create a perfectly matched hermetic connection. Key words: Dental abutment, dental implant, focused ion beam SEM, implant-abutment connection, morse taper, microbial leakage.

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Physicochemical and microscopic characterization of implant-abutment joints

Cited by 16 publications

References 26 publications

Potential Causes of Titanium Particle and Ion Release in Implant Dentistry: A Systematic Review

Potential Causes of Titanium Particle and Ion Release in Implant Dentistry: A Systematic Review

Avaliação da interface entre o componente protético reto e a conexão interna tipo Cone Morse do implante dentário por meio da microscopia eletrônica de varredura

Measurement of gap between abutment and fixture in dental conical connection implants. A focused ion beam SEM observation

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