Objective. To evaluate dental implant stability after osteoplastic procedures with vascularized peroneal graft in reconstructive jaw surgery and subsequent dental implantation.

Material and methods. We have assessed dental implant stability in 15 patients who underwent reconstructive osteoplastic maxillofacial surgery with vascularized peroneal flaps. Resonance-frequency analysis and Osstell-mentor device were applied. Evaluation of implant stability was based on registration of resonant electromagnetic oscillations of the implant. The result is displayed on the device display as ISQ value (Implant Stability Quotient). It is a coefficient of implant stability ranging from 1 to 100 units (higher value determines higher stability). Implant stability was assessed at the 1st and the 2nd stages of implantation, as well as after the period of osseous integration.

Results. We found the correspondence of clinical condition and RFA-stability of intraosseous dental implants. Mean ISQ scores were established under various clinical conditions for intraosseous implant installation. All implants were integrated into osseous tissue. At the 1st stage of dental implantation, ISQ score ranged from 78.2±0.3 to 84.2±0.1 regardless the area of reconstructive surgery (upper or lower jaw). Minimum value is 63 units, maximum — 91 units. After 6 months, ISQ score decreased by 3—4 units (range 75.2±0.2—81.6±0.1 units; min — 67, max — 88).

Conclusion. Mean ISQ score at the 1st stage of dental implantation indicates a high primary stability of dental implants and the possibility of direct installation of orthopedic structures. According to 6-month RFA-analysis data, there was a complete osseous integration at the 2nd stage of dental implantation in patients after previous osteoplastic surgery with vascularized autografts.

Keywords. vascularized autograft, resonance-frequency analysis, peroneal flap, dental implant