Prosthetic Rehabilitation of the Posterior Atrophic Maxilla, Short (⩽6 mm) or Long (≥10 mm) Dental Implants? A Systematic Review, Meta-analysis, and Trial Sequential Analysis: Naples Consensus Report Working Group A. Issue 6 (December 2019)

• Record Type: Journal Article
• Authors: Ravidà, Andrea; Wang, I-Ching; Sammartino, Gilberto; Barootchi, Shayan; Tattan, Mustafa; Troiano, Giuseppe; Laino, Luigi; Marenzi, Gaetano; Covani, Ugo; Wang, Hom-Lay
• Is Part Of: Implant dentistry. Volume 28:Issue 6(2019)
• Publication Date: 2019-12
• Subjects: dental implant -- short implant -- posterior maxillary rehabilitation; Dental implants -- Periodicals; 617.69305
• DOI: 10.1097/ID.0000000000000919
• Languages: English
• ISSNs: 1056-6163

Abstract

Abstract : Purpose: To compare the clinical and patient-reported outcomes of ⩽6-mm implants with those of ≥10-mm implants placed after both lateral and transcrestal sinus floor elevation. Materials and Methods: Using PubMed (MEDLINE), EMBASE, and Cochrane, a literature search for randomized controlled trials was performed. All the outcome variables were evaluated through a quantitative meta-analysis, and the influence of other clinical covariates were determined with a metaregression. For the survival outcomes, trial sequential analysis (TSA) was performed to adjust results for type I and II errors and to analyze the power of the available evidence. Results: After full-text reading, 12 studies were included in the analyses. No statistically significant difference was found after 3 years between the 2 study groups ( P = 0.36). Short implants displayed fewer biological complications ( P = 0.05), less marginal bone loss (MBL) from implant placement ( P < 0.01), and reduced surgical time and treatment cost. However, long implants showed a statistically significant smaller number of prosthetic complications ( P = 0.03). TSA confirmed the results of the meta-analysis, revealing that additional studies are needed due to low statistical power of the available evidence. Conclusion: The placement of short implants is a predictable option in treating patients with maxillary atrophy up to a 3-year follow-up. Studies with a longer observational period are needed to study the long-term performance of these implants. Abstract : Supplemental Digital Content is Available in the Text.