Success and survival rates of mandibular overdentures supported by two or four implants: a systematic review
Braz. oral res
;
28(1): 74-80, Jan-Feb/2014. tab, graf
Artigo
em Inglês
| LILACS
| ID: lil-697004
ABSTRACT
This systematic review evaluated the influence played by the number of implants on the results of rehabilitation treatment with mandibular overdentures on 2 or 4 implants. The literature search was conducted using PubMed, Embase and Cochrane databases. Specific terms were used in performing a search from January 1980 to January 2013. The search strategy was applied by two reviewers who extracted the data and compared the results. Discrepancies were resolved by discussion. Great heterogeneity was seen among the selected studies, in regard to survival rates, prosthesis failure and function rates. A medium degree of quality and methodological consistency was found in one study, and no studies showed a high degree. When considering the prosthesis success rate for 2 implants, there was a variation of 23% to 100%. However, when considering the survival rate, the result was 92% to 100%. For 4 implants, prosthesis survival rates showed less variation, i.e., 97.7% to 100%. Ball attachments were the most common type of abutment for 2 implants; however, there was a higher prevalence of bar abutments for 4 implants. Rehabilitations with 2 implants showed more complications and required more maintenance according to the connection type. Given the limitations of this review, mandibular overdentures with 4 implants showed better results with respect to survival and success rates, especially those with a bar connection. Further studies comparing these two treatment types are necessary to improve the scientific evidence in this area.
Texto completo:
DisponíveL
Índice:
LILACS (Américas)
Assunto principal:
Arcada Edêntula
/
Prótese Dentária Fixada por Implante
/
Prótese Total Inferior
/
Revestimento de Dentadura
Tipo de estudo:
Fatores de risco
/
Revisões Sistemáticas Avaliadas
Limite:
Humanos
Idioma:
Inglês
Revista:
Braz. oral res
Assunto da revista:
Odontologia
Ano de publicação:
2014
Tipo de documento:
Artigo
País de afiliação:
Brasil
Instituição/País de afiliação:
Universidade Federal do Rio Grande do Norte/BR
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