Clinical Outcome of Implants Inserted in Piezo Split Alveolar Ridges: A Pilot Study
Authors: Francesco Carinci and Matteo Danza
Abstract: Purpose: Piezo-electric surgery (PES) uses a modulated ultrasonic frequency that allows highly precise and safe cutting of hard tissue. Since PES split crest and immediate insertion of implants is a new surgical technique, we performed a retrospective pilot study. Material and methods: In the period between January 2003 and December 2007, 15 patients (10 females and 5 males, median age 44.7 years) were operated and 52 fixtures were inserted. The mean follow-up was 22 months. Kaplan Meier and Cox statistic test were used. Results: Only one out of 52 implants was lost (i.e. survival rate – 98.1%) and no differences were detected by using lost implants. To detect if the studied variables have any impact on PES split crest, bone loss around implant’ neck was analyzed (i.e. success rate). Although univariate test showed a lower crestal bone resorption for immediately loading, wide diameter, standard length, implant’ specific type and number of prosthetic units = 0.8, multivariate analysis did not demonstrated any statistical difference. Conclusion: Implants inserted in PES split crest have high survival rate. The success rate is lower if compared with that of fixtures inserted in unsplitted alveolar ridge.
Clinical Significance: Alveolar split crest by means of piezo surgery is a reliable surgical technique in order to insert dental implants since it preserve the alveolar ridge.