A New 3d “sinus Titanium Roofing (str)" Technique For Maxillary Sinus Lift Augmentation In Complicated Cases

Objectives: : Schneiderian membrane perforation is the most common complication in sinus lift augmentation. Untreated may result in graft material loss into sinus cavity, oroantral fistula and impairment function of antrum.
Methods: 9 patient- 4 female, 5 male , with 10 complicated maxillary sinus characterized by lack of continuity of the alveolar bone (3), failure of previous sinus lift (3), wisdom tooth penetrating the sinus(1), pneumatic sinus(4) were treated over the last two years. The treatment included installation of "sinus roofing" plate made by 3D printer. Implants (12) were inserted in one stage (6) and after 6 month (6). Patients were examined every 2 weeks; they received CT scan immediately after surgery and after 6 months. Rehabilitation with fixed prosthesis was performed after 6 months.
Results: the healing process of 10 sinuses was uneventful. 7 patients received 12 implants, the increase of bone height was 12-25 mm, and long implants were placed. Implants success rate was 100%. The patients received rehabilitation with fixed prosthesis. The follow up period is 4-24 months.
Conclusions: The use of a prepared "sinus roofing" plate in extreme complicated maxillary sinus is a predictable option of treatment.