Saucerização de implantes osseointegrados e o planejamento de casos clínicos ortodônticos simultâneos

Consolaro, Alberto; Carvalho, Renato Savi de; Francischone, Carlos Eduardo; Consolaro, Maria Fernanda M-O.

doi:10.1590/s2176-94512010000300003

Cited by 18 publications

(20 citation statements)

References 15 publications

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“…In this study, we highlight the fact that the elasticity modulus itself has a strong impact on load transfer (stress) between the implant and the bone during loading. We particularly focus on two strategic areas which are well known as sources of mechanical stability problems: the top of the implant-cortical bone interface, with, for example, saucerization [35] due to local overload-induced microfracture [36] or insufficient stress to maintain implant stability [37], and the bottom of the implant-cortical bone interface, which is usually overstrained due to the conical implant shape. These two areas are respectively named TOP and BOTTOM.…”

Section: Research Agency Through the Functional Materials And Innovatmentioning

confidence: 99%

Interaction of bone–dental implant with new ultra low modulus alloy using a numerical approach

Piotrowski

Baptista²,

Patoor

et al. 2014

Materials Science and Engineering: C

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Although mechanical stress is known as being a significant factor in bone remodeling, most implants are still made using materials that have a higher elastic stiffness than that of bones.Load transfer between the implant and the surrounding bones is much detrimental, and osteoporosis is often a consequence of such mechanical mismatch. The concept of mechanical biocompatibility has now been considered for more than a decade. However, it is limited by the choice of materials, mainly Ti-based alloys whose elastic properties are still too far from cortical bone. We have suggested using a bulk material in relation with the development of a new beta titanium-based alloy. Titanium is a much suitable biocompatible metal, and betatitanium alloys such as metastable TiNb exhibit a very low apparent elastic modulus related to the presence of an orthorhombic martensite. The purpose of the present work has been to investigate the interaction that occurs between the dental implants and the cortical bone. 3D finite element models have been adopted to analyze the behaviour of the bone-implant system depending on the elastic properties of the implant, different types of implant geometry, friction force, and loading condition. The geometry of the bone has been adopted from a mandibular incisor and the surrounding bone. Occlusal static forces have been applied to the implants, and their effects on the bone-metal implant interface region have been assessed and 2 compared with a cortical bone/ bone implant configuration. This work has shown that the low modulus implant induces a stress distribution closer to the actual physiological phenomenon, together with a better stress jump along the bone implant interface, regardless of the implant design.Keywords: Dental biomechanics, Beta titanium alloy, Low modulus implant, Numerical modelling, Bone-implant interface IntroductionOver the last few decades, considerable progress in dental implantology has been made, with success rates exceeding 95% [1]. Implant stability is commonly considered as playing a major role in a successful osseointegration. Obtaining post-operative osseointegration is necessary in order to establish a solid and durable connection between the implant and the osseous structure. In agreement with the Wolff law, a process of osseous remodelling adapted to the stress level occurs after implantation [2][3][4]. This process is controlled by mechanical loads.When the occlusal forces induced on the bone exceed a physiological level, bone resorption can occur, with possible failure [5]. More importantly, the long-term performance of an implant is known to be strongly dependent on the bone tissue interaction [6]. The strain state which takes place at the interface between the bone and implant controls the bone tissue remodelling mechanisms [7]. Bone resorption is associated with a low strain state, and bone necrosis occurs when strain exceeds the maximum level.Evaluation of the risk requires a comprehension of the load transfer along the bone-dental implant interface. T...

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Section: Research Agency Through the Functional Materials And Innovatmentioning

confidence: 99%

Interaction of bone–dental implant with new ultra low modulus alloy using a numerical approach

Piotrowski

Baptista²,

Patoor

et al. 2014

Materials Science and Engineering: C

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“…These surgical issues regarding the dental follicle, exposure of the enamel and cementoenamel junction and their impact on bracket bonding have been presented in previous papers. 6,7,8 When requesting surgeons to bond a bracket on the crown of an unerupted tooth, orthodontists are not requesting, nor expecting surgeons to complement the surgical procedure by dislocating the canine with the purpose of facilitating orthodontic movement. Strictly speaking, surgically induced dislocation in cases of canines that require forced eruption should be undertaken at the orthodontist's request.…”

Section: Surgically Induced Dislocation Is Independent Of Orthodonticmentioning

confidence: 99%

“…In many cases, the potential space is much smaller and the canine erupts, but this increases the risk of resorption in neighboring teeth 6,7 -although sometimes such risk is inevitable. It must be assumed that the dental follicle of maxillary canines,given their unique anatomy, tend to bulge and broaden laterally more than any other teeth.…”

Section: 25mentioning

confidence: 99%

Tracionamento ortodôntico: possíveis consequências nos caninos superiores e dentes adjacentes. Parte 3: anquilose alveolodentária, reabsorção dentária por substituição, metamorfose cálcica da polpa e necrose pulpar asséptica

Consolaro

Francischone

2010

Dental Press J. Orthod.

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“…Além disso, é sugerido que, devido ao fato de a ligação do epitélio juncional ao implante ser mais fraca do que ao dente, a entrada e ação do EGF presente na saliva pode ser constante. Isto explicaria o fato de, quanto mais vezes removido e devolvido o cicatrizador, o provisório e até mesmo o pilar definitivo em posição, maior é a estimulação da perda óssea marginal, dada pelo rompimento dos pontos de união entre estes e o epitélio juncional (os hemidesmossomos) (8). Mas não se sabe o quanto isso é relevante clinicamente ao longo do tempo.…”

Section: Discussionunclassified

“…Em um período de acompanhamento de 4 anos, foram realizadas radiografias sequenciais, mostrando que, em média, ocorre uma perda de 0.5mm no primeiro ano e depois de 0.06 a 0.08mm a cada ano, do osso marginal periimplantar. Os autores também detectaram uma forte associação entre uma pobre higienização e o aumento desta perda óssea (6) Tal reabsorção óssea faz com que a crista óssea marginal forme um ângulo aberto com a superfície do implante, e assuma a forma de um pires raso, daí a origem do termo saucerização (em inglês, pires = saucer) (8).…”

Section: Introductionunclassified

Análise do efeito do dimetacrilato contra a infiltração bacteriana pela interface implante/componente protético através da PCR Real Time: um estudo in vivo

Keedi¹

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Saucerização de implantes osseointegrados e o planejamento de casos clínicos ortodônticos simultâneos

Cited by 18 publications

References 15 publications

Interaction of bone–dental implant with new ultra low modulus alloy using a numerical approach

Interaction of bone–dental implant with new ultra low modulus alloy using a numerical approach

Tracionamento ortodôntico: possíveis consequências nos caninos superiores e dentes adjacentes. Parte 3: anquilose alveolodentária, reabsorção dentária por substituição, metamorfose cálcica da polpa e necrose pulpar asséptica

Análise do efeito do dimetacrilato contra a infiltração bacteriana pela interface implante/componente protético através da PCR Real Time: um estudo in vivo

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