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Immediately loaded short implants: analysis of a case series of 133 implants
Marco Degidi1, Adriano Piattelli, Giovanna Iezzi
1Dental School, University of Bologna, Bologna, Italy.
Objective:
To perform a retrospective study on the success of immediately loaded short implants (ie, length < 10 mm).
Method And Materials:
From January 1995 to October 2004, 133 short implants were inserted and immediately loaded. Multiple implant systems were used, with a mean follow-up of about 4 years. Only 3 of the 133 implants were lost (ie, a survival rate of 97.7%), and no statistically significant differences were found among the studied variables; no or reduced marginal bone loss was considered as an indicator of the success rate when evaluating the effects of several factors with the use of a general linear model.
Results:
By using the survival rate, no differences were detected among the studied variables. On the contrary, the analysis of the success rate by means of a general linear model showed that wider (diameter > 3.75 mm) and longer (length = 10 mm) implants were related to a lower delta insertion abutment junction (or marginal bone loss) and thus a better outcome.
Conclusion:
Immediately loaded short implants had a high survival rate and success rate similar to those reported in previous studies of 2-stage procedures. Immediate loading of short implants can be considered a reliable technique, although a higher marginal bone loss was to be expected when narrow (diameter < or = 3.75 mm) and shorter (length < 10 mm) implants were used.
