Abstract:

Objective

To introduce a new maxillary sinus floor elevation technique with simultaneous implant placement through tanscrestal approach and evaluate its clinical effects.

Methods

11 patients with 12 maxillary sinus were included in this clinical study， 6 males， 5 females， patients' age ranges from 31 to 70.The remain alveolar bone height ranges from 1.3 to 4 mm.A bone window with a diameter of about 5 mm was made in the central of the alveolar crest，care was taken not to perforate the sinus membrane and the floor of maxillary sinus was elevated.Implants were placed in the bone windows and artificial bone materials were stuffed around the implants.A collagen membrane was used to cover the bone window.Implants were exposed 6-8 months postoperatively and the superstructures were finished sequentially.The follow-up time was 3 to 12 months.

Results

All 19 implants in 12 sides of maxillary sinus gained osseointegration，no implant loosed or lost during the follow-up time.Patients were satisfactory with their implant dentures.

Conclusions

Maxillary sinus floor elevation with simultaneous implants placement in severe atrophic alveolar utilizing a transcrestal technique can gain predictable short-term clinical effects， it has less trauma and treatment time than traditional sinus lift with a lateral approach.

Key words: Maxillary sinus, Dental implant, Sinus elevation