Authors
Abstract(s)
Objetivo: Avaliar a taxa de sobrevivência cumulativa e a perda óssea marginal peri
implantar de implantes dentários de zircónia submetidos a um acompanhamento de
pelo menos 12 meses após a reabilitação protética. Materiais e Métodos: A procura
sistemática eletrónica através dos bancos de dados PubMed (MEDLINE) e EMBASE
foi realizada independentemente por dois revisores a fim de identificar estudos clínicos
publicados entre janeiro de 2005 e abril de 2019 com no mínimo 10 pacientes e 12
meses de acompanhamento após carga funcional. As referências dos artigos
selecionados foram revisadas manualmente à procura de estudos adicionais.
Resultados: A remodelação marginal óssea apresentou perdas médias de 0.80 mm
(95% CI 0.60-1.00 mm) e 1.01 mm (95% CI 0.72-1.29 mm) em 1 ano e após 2 anos
de funcionalização respetivamente. Não foi possível realizar a meta-análise para a
taxa de sobrevivência uma vez que a maioria dos estudos não forneceram valores de
intervalo de confiança ou desvio padrão. A taxa de falha foi reportada para um período
de 2.75 anos de acompanhamento, onde a prevalência de falha precoce, falha tardia
e fratura foi de 3.4%, 1.7% e 1.7% respetivamente. Conclusão: Os implantes de
zircónia apresentaram resultados comparáveis aos dos implantes de titânio no que diz
respeito à perda óssea marginal em períodos de observação de curto prazo após a
restauração protética. No entanto, mais estudos clínicos a longo prazo bem
planejados são necessários antes seja dada recomendação para adoção de implantes
de zircónia na prática diária.
Purpose: To evaluate cumulative survival rate and peri-implant marginal bone loss of zirconia dental implants subjected to a follow-up of at least 12 months after prosthetic rehabilitation. Materials and Methods: A systematic electronic search through the databases PubMed (MEDLINE) and EMBASE was performed by two independent reviewers to identify clinical studies published between January 2005 and April 2019 with a minimum of 10 patients and 12 months of follow-up after functional loading. References from the selected articles were manually reviewed for further studies. Results: From the initial 1225 articles retrieved, only 19 met all the inclusion criteria. The marginal bone remodelling accounted mean losses of 0.8 mm (95% CI 0.60-1.00 mm) and 1.01 mm (95% CI 0.72-1.29 mm) at 1-year and after 2-year post-loading respectively. Failure rate of 6.8% was calculated for a mean follow-up period of 2.75 years, where the prevalence of early failure, late failure and implant fracture was 3.4%, 1.7% and 1.7% respectively. The meta-analysis regarding the survival rate of one- and two-piece zirconia dental implants was not possible due to the lack of information about confidential interval or standard deviation on most of the included articles. Conclusion: Zirconia implants presented values comparable to titanium implants with respect to marginal bone loss at short-term observation periods following prosthetic delivery. However, more long-term well-designed clinical studies are required before giving the recommendation on the adoption of zirconia implants in daily practice.
Purpose: To evaluate cumulative survival rate and peri-implant marginal bone loss of zirconia dental implants subjected to a follow-up of at least 12 months after prosthetic rehabilitation. Materials and Methods: A systematic electronic search through the databases PubMed (MEDLINE) and EMBASE was performed by two independent reviewers to identify clinical studies published between January 2005 and April 2019 with a minimum of 10 patients and 12 months of follow-up after functional loading. References from the selected articles were manually reviewed for further studies. Results: From the initial 1225 articles retrieved, only 19 met all the inclusion criteria. The marginal bone remodelling accounted mean losses of 0.8 mm (95% CI 0.60-1.00 mm) and 1.01 mm (95% CI 0.72-1.29 mm) at 1-year and after 2-year post-loading respectively. Failure rate of 6.8% was calculated for a mean follow-up period of 2.75 years, where the prevalence of early failure, late failure and implant fracture was 3.4%, 1.7% and 1.7% respectively. The meta-analysis regarding the survival rate of one- and two-piece zirconia dental implants was not possible due to the lack of information about confidential interval or standard deviation on most of the included articles. Conclusion: Zirconia implants presented values comparable to titanium implants with respect to marginal bone loss at short-term observation periods following prosthetic delivery. However, more long-term well-designed clinical studies are required before giving the recommendation on the adoption of zirconia implants in daily practice.
Description
Keywords
Implantes dentários Óxido de zircónio Cerâmicas Taxa de sobrevivência Revisão sistemática Dental implants Zirconium oxide Ceramics Survival rate Systematic