Clinical Performance of Full Arch Implant Monolithic Zirconia Rehabilitations – A Retrospective Study

by | Set 1, 2021 | Reabilitação Oral

Categoria: Reabilitação Oral

Autores: Miguel Nunes Vasques, Marco Infante da Câmara, Fernando Duarte and José Manuel Mendes

Referência: Clinical Performance of Full Arch Implant Monolithic Zirconia Rehabilitations – A Retrospective Study
SCIENTIFIC ARCHIVES OF DENTAL SCIENCES – Volume 4 Issue 9 September 2021
ISSN: 2642-1623

Abstract:
Introduction: Population aging and total edentulism are two interrelated factors. The United Nations department of public information states that the world population by 2015 was 7.3 billion people and the World Health Organization states that 26% of adults over the age of 74 will have lost all their permanent teeth, we are facing a public health problem that can be solved by using dental implants. Total fixed rehabilitations on implants are very well documented in the scientific literature. Various types of prosthetic materials may be used such as metalloacrylic, metallocomposite and metaloceramic. The most frequent complications of this type of oral rehabilitation are the fracture of the acrylic teeth, wear of the natural antagonist teeth, ceramic chippings, lack of passivity and repairs of fractured metal structures.
The use of zirconia for the execution of superstructures is a more recent modality of treatment. Rehabilitation in zirconia has been increasing in popularity due to its excellent mechanical and biological properties. Zirconia structures with cutback and subsequent application of ceramics often have frequent chippings. In order to find a solution, monolithic multilayer zirconia blocks have been developed to perform one piece fixed implant restorations. With this improvement it is expected reduction of fractures obtaining more esthetic fixed prostheses with high resistance and minimum occlusal adjustments.
Purposes: This retrospective study has as main objective to evaluate the clinical performance of the full arch rehabilitation on implants using monolithic zirconia Noritake Katana Kuraray ML®. The secondary objectives are the evaluation of the average weight of each structure in zirconia, influence of the distal cantilever as a risk factor in the fracture of the structure in each dental arch, incisal edge chippings, fracture of cusps or zirconia structure, evaluation of the level of wear of the antagonistic arches and dicementation of the titanium interfaces of the zirconia structure.

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Aumentos Ósseos em Implantodontia – Capítulo 15

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A filosofia de tratamento do nosso grupo é totalmente favorável à realização de reconstruções teciduais (tanto óssea quanto tecido mole), para posterior reabilitação implantossuportada dos pacientes com atrofia severa nos maxilares. No entanto, entendemos que o implantodontista deve conhecer e estar apto a praticar (ou pelo menos a diagnosticar e encaminhar) alternativas de tratamento que também podem beneficiar o paciente.

Aumentos Ósseos em Implantodontia – Capítulo 11

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A forma tradicional/clássica de tratamento dos rebordos atróficos é por meio do uso de blocos ósseos autógenos, através dos quais é possível obter bons resultados. No entanto, essa modalidade de tratamento é associada a um maior índice de exposição do enxerto ao meio bucal (principalmente nos caos de defeitos verticais), dificuldade de adaptação do enxerto ao leito recetor (em casos de rebordos irregulares), maior morbidade e maior dificuldade no posicionamento/fixação desses blocos ao nível da crista óssea, o que por vezes não proporciona um resultado homogéneo do rebordo, dificultando a implantação.