title: Long-term Short Implants Performance: Systematic Review and Meta-Analysis of the Essential Assessment Parameters.
abstract: Lack of standard criteria in the outcome assessment makes it difficult to draw conclusions on the clinical performance of short implants and, under these circumstances, determine the reasons for implant failure. This study evaluated, through a systematic review of the literature and meta-analysis, the essential parameters required to assess the long-term clinical performance of short and extra-short implants. Electronic databases (Pubmed-MEDLINE, Cochrane Library Database, Embase, and Lilacs) were searched by two independent reviewers, without language limitation, to identify eligible papers. References from the selected articles were also reviewed. The review included clinical trials involving short dental implants placed in humans, published between January 2000 and March 2014, which described the parameters applied for outcome's measurements and provided data on survival rates. Thirteen methodologically acceptable studies were selected and 24 parameters were identified. The most frequent parameters assessed were the marginal bone loss and the cumulative implant survival rate, followed by implant failure rate and biological complications such as bleeding on probing and probing pocket depths. Only cumulative implant survival rate data allows meta-analysis revealing a positive effect size (from 0.052 (fixed) to 0.042 (random)), which means that short implant appears to be a successful treatment option. Mechanical complications and crown-to-implant (C/I) ratio measurement were also commonly described, however, considering the available evidence; no strong conclusions could be drawn since different methods were used to assess each parameter. By means of this literature review, a standard evaluation scheme is proposed, being helpful to regiment further investigations and comparisons on future studies.
authors: Department of Dentistry, Universidade Federal de Santa Catarina, Florianópolis, SC, BR.
authors: Thais Marques Simek Vega
authors: TM
authors: Gonçalves
authors: Department of Dental Materials, University of Modena and Reggio Emilia, Modena, IT.
authors: Sergio
authors: S
authors: Bortolini
authors: Department of Dental Materials, University of Modena and Reggio Emilia, Modena, IT.
authors: Matteo
authors: M
authors: Martinolli
authors: Department of Prosthodontics and Periodontology, Piracicaba Dental School, Universidade de Campinas, Piracicaba, SP, BR.
authors: Bruna Fernandes Moreira
authors: BF
authors: Alfenas
authors: Department of Oral Pathology, Division of Periodontics, SLMANDIC - Faculdade São Leopoldo Mandic, Campinas, SP, BR.
authors: Daiane Cristina
authors: DC
authors: Peruzzo
authors: Department of Dental Materials, University of Modena and Reggio Emilia, Modena, IT.
authors: Alfredo
authors: A
authors: Natali
authors: Department of Dental Materials, University of Modena and Reggio Emilia, Modena, IT.
authors: Andrea
authors: A
authors: Berzaghi
authors: Department of Prosthodontics and Periodontology, Piracicaba Dental School, Universidade de Campinas, Piracicaba, SP, BR.
authors: Renata Cunha Matheus Rodrigues
authors: RC
authors: Garcia
mesh_terms: D002986:Clinical Trials as Topic; D015921:Dental Implants; D006801:Humans
chemical_list: D015921:Dental Implants