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Quintessence Publishing: Journals: QI
Quintessence International

Edited by Eli Eliav

ISSN 0033-6572 (print) • ISSN 1936-7163 (online)

September 2018
Volume 49 , Issue 8

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Can extra-short dental implants serve as alternatives to bone augmentation? A preliminary longitudinal randomized controlled clinical trial

Sara N. Shah, DMD, MMSc/Jamie Chung, DDS, MMSc/David M. Kim, DMD, DMSc/Eli E. Machtei, DMD

Pages: 653643
PMID: 29989107
DOI: 10.3290/j.qi.a40763

Objective: A randomized trial to assess clinical and radiographic outcomes of short versus standard dental implants placed with concomitant vertical bone augmentation. Method and Materials: Patients requiring dental implants were randomized to receive either 6-mm implants (experimental) or 10-mm implants with vertical augmentation (control). Custom load-bearing healing abutments were connected to allow for indirect resonance frequency analysis measurements. Standardized radiographs were taken at implant placement (baseline), and at 3 and 12 months. Implants were restored at 3 to 6 months, and final measurements were taken at 12 months. Results: Fifty patients with 25 implants per group were included. Five implants failed, four experimental and one control (84% and 96% cumulative survival rate, respectively). Short implants required significantly less surgical time (51.6 23 versus 68.5 35 minutes, P = .05). Implant stability quotients at baseline (67.9 8.3 experimental and 70.8 7.6 control, P = .215) and 12 weeks (70.17 7.4 and 72.03 5.9, respectively, P = .513) were similar and unchanged. Positive correlation was found between the two measurement methods (r2 = .6, P = .025). One-year average marginal bone loss was slightly lower for the experimental group (0.6 0.16 mm) compared to the control group (0.86 0.19 mm); however, this was not statistically significant (P = .287). Conclusion: Short dental im plants may offer an alternative for implant placement in an atrophic jaw; however, they are associated with reduced first-year survival rate. Short dental implants should be used judiciously in light of this potential predicament, and alternatives assessed.

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