Browsing by Author "Polido, Waldemar Daudt"

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    Number of implants placed for complete‐arch fixed prostheses: A systematic review and meta‐analysis
    (Wiley, 2018-10) Polido, Waldemar Daudt; Aghaloo, Tara; Emmett, Thomas W.; Taylor, Thomas D.; Morton, Dean; Oral and Maxillofacial Surgery and Hospital Dentistry, School of Dentistry
    Objectives The main purpose of this systematic review was to evaluate outcomes related to the number of implants utilized to support complete‐arch fixed prostheses, both for the maxilla and the mandible. Materials and methods This review followed the reporting guidelines of the Preferred Reporting Items for Systematic Reviews and Meta‐Analyses (PRISMA). A focused question using the PICO format was developed, questioning whether “In patients with an implant supported fixed complete dental prosthesis, do implant and prosthetic survival outcomes differ between five or more compared to fewer than five supporting implants?”. A comprehensive search of the literature was formulated and performed electronically and by hand search. Two independent reviewers selected the papers and tabulated results. Primary outcomes analyzed were implant and prosthesis survival. Implant distribution, loading, and type of retention were observed as secondary outcomes, as they relate to the number of implants. A meta‐analysis was performed to compare results for studies by number of implants. Results The search strategy identified 1,579 abstracts for initial review. Based on evaluation of the abstracts, 359 articles were identified for full‐text evaluation. From these, 93 were selected and included in this review, being nine RCTs, 42 prospective and 42 retrospective. Of the 93 selected studies, 28 reported number of implants for the maxilla, 46 for the mandible, and 19 for both maxilla and mandible. The most reported number of implants for the “fewer than five” group is 4 for the maxilla, and 3 and 4 for the mandible, whereas for the “five or more” implants group, the most reported number of implants was 6 for the maxilla and 5 for the mandible. No significant differences in the primary outcomes analyzed were identified when fewer than five implants per arch were compared with five or more implants per arch (p > 0.05), in a follow‐up time ranging from 1 to 15 years (median of 8 years). Conclusions Evidence from this systematic review and meta‐analysis suggests that the use of fewer than five implants per arch, when compared to five or more implants per arch, to support a fixed prosthesis of the completely edentulous maxilla or mandible, present similar survival rates, with no statistical significant difference at a p < 0.05 and a confidence interval of 95%.
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    Short implants: an alternative to bone grafts in the posterior mandible
    (Dental Press, 2015-10) Zanettini, Leonardo Matos Santolim; Fortuna, Carlos Roberto; Polido, Waldemar Daudt; Oral and Maxillofacial Surgery and Hospital Dentistry, School of Dentistry
    Introdução: a Implantodontia sofreu grande aprimoramento de técnicas e alternativas de tratamento, visando melhorar a previsibilidade e reduzir a invasividade dos procedimentos. Existem diversos fatores que limitam a colocação de implantes, entre eles um volume insuficiente de osso, que é frequentemente encontrado em pacientes com reabsorção severa de mandíbula. Técnicas de aumento ósseo, tais como enxertos ósseos do tipo onlay ou inlay, regeneração óssea guiada e distração osteogênica, estão entre as mais utilizadas para reabilitar muitos desses casos com implantes. No entanto, essas técnicas aumentam o tempo de tratamento, a morbidade, complicações e o custo. Na última década, o uso de implantes curtos tornou-se de grande interesse para a reabilitação dentária em áreas de volume vertical reduzido. Diversos estudos mostram que os implantes curtos (< 8mm) têm os mesmos índices de perda óssea marginal que os implantes longos, desde que alguns fatores sejam observados, tais como a superfície do implante e o tipo de conexão protética. Recentemente implantes extracurtos foram lançados no mercado odontológico, buscando uma alternativa de tratamento menos invasiva para as atro as mais severas. Objetivo: o objetivo desse artigo é repor- tar a viabilidade e previsibilidade da reabilitação bucal com implantes curtos de 4mm, em região posterior de mandíbula. Conclusões: os estudos revisados e o relato de caso confirmam que os implantes curtos de 4mm oferecem uma alternativa viável para reabilitações em região posterior de mandíbula atrófica. Implantes curtos podem ser usados com segurança e previsibilidade, desde que associados a um planejamento prévio e a uma técnica cirúrgica adequada.