The purpose of this retrospective study was to determine survival and peri-implant marginal bone loss of short and ultra-short implants placed in the posterior mandible. A total of 98 patients received 201 locking-taper implants between January 2014 and January 2015. Implants were placed with a 2-stage approach and restored with single crowns. Clinical and radiographic examinations were performed at 3-year recall appointments. At that time, the proportion of implant survival by length, and variations of crestal bone levels (mean crestal bone loss and mean apical shift of the “first bone-to-implant contact point” position) were assessed. Significance level was set at 0.05. The total number of implants examined 36 months after loading included: 71 implants, 8.0 mm in length; 82 implants, 6.0 mm in length; and 48 implants, 5.0 mm in length. Five implants failed. The overall proportion of survival was 97.51%, with 98.59% for the 8.0-mm implants, 97.56% for the 6.0-mm implants, and 95.83% for the 5.0-mm implants. No statistically significant differences were found among the groups regarding implant survival (P = .73), mean crestal bone loss (P = .31), or mean apical shift of the “first bone-to-implant contact point” position (P = .36). Single-crown short and ultra-short implants may offer predictable outcomes in the atrophic posterior mandibular regions, though further investigations with longer follow-up evaluations are necessary to validate our results.
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August 2020
Research Article|
April 21 2020
Survival of Short and Ultra-Short Locking-Taper Implants Supporting Single Crowns in the Posterior Mandible: A 3-Year Retrospective Study
Giorgio Lombardo, MD, DDS;
Giorgio Lombardo, MD, DDS
*
1School of Dentistry, Department of Surgery, Dentistry, Paediatrics and Gynaecology (DIPSCOMI), University of Verona, Verona, Italy.
* Corresponding author, e-mail: giorgio.lombardo@univr.it
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Annarita Signoriello, DDS;
Annarita Signoriello, DDS
1School of Dentistry, Department of Surgery, Dentistry, Paediatrics and Gynaecology (DIPSCOMI), University of Verona, Verona, Italy.
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Miguel Simancas-Pallares, DDS;
Miguel Simancas-Pallares, DDS
2Division of Oral & Craniofacial Health Sciences. Division of Pediatric and Public Health, Adams School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC.
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Mauro Marincola, DDS;
Mauro Marincola, DDS
3Research Department, Dental Implant Unit, Faculty of Dentistry, University of Cartagena, Cartagena, Colombia.
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Pier Francesco Nocini, MD, DDS
Pier Francesco Nocini, MD, DDS
1School of Dentistry, Department of Surgery, Dentistry, Paediatrics and Gynaecology (DIPSCOMI), University of Verona, Verona, Italy.
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J Oral Implantol (2020) 46 (4): 396–406.
Citation
Giorgio Lombardo, Annarita Signoriello, Miguel Simancas-Pallares, Mauro Marincola, Pier Francesco Nocini; Survival of Short and Ultra-Short Locking-Taper Implants Supporting Single Crowns in the Posterior Mandible: A 3-Year Retrospective Study. J Oral Implantol 1 August 2020; 46 (4): 396–406. doi: https://doi.org/10.1563/aaid-joi-D-19-00190
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