The International Journal of Oral & Maxillofacial Implants
Edited by Steven E. Eckert, DDS, MS
This highly regarded, frequently cited journal integrates clinical and scientific data to improve methods and results of oral and maxillofacial implant therapy, compiles research, technology, clinical applications, reviews of the literature, and new developments in reconstructive dentistry and implant techniques. Regular features include “Current Issues Forum,” which presents opinions of invited experts on controversial issues, and “Literature Review,” which keeps readers informed about implant-related publications.
Sung-Ah Lee, MS/Chun-Teh Lee, DDS, MS/Martin M. Fu, BDS, MS, DMSc/Waeil Elmisalati, BDS/Sung-Kiang Chuang, DMD, MD, DMSc
Purpose: The aim of this study was to undertake a systematic review with meta-analysis on randomized controlled trials (RCTs) to compare the rates of survival, success, and complications of short implants to those of longer implants in the posterior regions.
Materials and Methods: Electronic literature searches were conducted through the MEDLINE (PubMed) and EMBASE databases to locate all relevant articles published between January 1, 1990, and April 30, 2013. Eligible studies were selected based on inclusion criteria, and quality assessments were conducted. After data extraction, meta-analyses were performed.
Results: In total, 539 dental implants (265 short implants [length 5 to 8 mm] and 274 control implants [length 8 mm]) from four RCTs were included. The fixed prostheses of multiple short and control implants were all splinted. The mean follow-up period was 2.1 years. The 1-year and 5-year cumulative survival rates (CSR) were 98.7% (95% confidence interval [CI], 97.8% to 99.5%) and 93.6% (95% CI, 89.8% to 97.5%), respectively, for the short implant group and 98.0% (95% CI, 96.9% to 99.1%) and 90.3% (95% CI, 85.2% to 95.4%), respectively, for the control implant group. The CSRs of the two groups did not demonstrate a statistically significant difference. There were also no statistically significant differences in success rates, failure rates, or complications between the two groups.
Conclusion: Placement of short dental implants could be a predictable alternative to longer implants to reduce surgical complications and patient morbidity in situations where vertical augmentation procedures are needed. However, only four studies with potential risk of bias were selected in this meta-analysis. Within the limitations of this meta-analysis, these results should be confirmed with robust methodology and RCTs with longer follow-up duration. Int J Oral Maxillofac Implants 2014;29:1085–1097. doi: 10.11607/jomi.350410.11607/jomi.3504