title: Two-stage closed sinus lift: a new surgical technique for maxillary sinus floor augmentation.
abstract: Bone tissue atrophy may constitute a relative contraindication for implantation. The methods used in reconstruction of the alveolar ridge within the lateral section of the maxilla have been well known but not perfect. Presentation of the two-stage, closed sinus lift technique as well as efficacy evaluation of reconstruction of the alveolar ridge in the maxilla within its vertical dimension with the use of this technique. The total procedure was performed in 26 out of 28 patients qualified for the study. The height of the alveolar ridge at the site of the planned implantation was no <3 mm, the width of the ridge was no <5 mm. During the treatment stage 1 the sinus lift was performed for the first time. The created hollow was filled with allogeneic granulate. After 3-6 months stage 2 was performed consisting in another sinus lift with simultaneous implantation. The treatment was completed with prosthetic restoration after 6 months of osteointegration. In 24 out of 26 cases stage 1 was completed with the average ridge height of 7.2 mm. In stage 2, simultaneously with the second sinus lift, 26 implants were placed and no cases of sinusitis were found. In the follow-up period none of the implants were lost. The presented method is efficient and combines the benefits of the open technique-allowing treatment in cases of larger reduction of the vertical dimension and the closed technique-as it does not require opening of the maxillary sinus.
authors.affiliation: Medicare Dental Practice, ul. Popiełuszki 17a/102, 01-595, Warsaw, Poland. kornel.krasny@op.pl.
authors.forename: Kornel
authors.initials: K
authors.lastname: Krasny
authors.affiliation: Department of Orthodontics, Medical University of Warsaw, ul. Nowogrodzka 59, 01-005, Warsaw, Poland. mkrasny@op.pl.
authors.forename: Marta
authors.initials: M
authors.lastname: Krasny
authors.affiliation: Department of Transplantology and Central Tissue Bank, Warsaw Medical University, Warsaw, Poland. artur.kaminski@wum.edu.pl.
authors.forename: Artur
authors.initials: A
authors.lastname: Kamiński
mesh_terms: D000328:Adult; D000368:Aged; D000539:Alveolar Process / Q000000981:diagnostic imaging* / Q000601:surgery*; D003758:Dental Implantation, Endosseous / Q000295:instrumentation* / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011859:Radiography; D059546:Sinus Floor Augmentation / Q000295:instrumentation* / Q000379:methods*; D016896:Treatment Outcome
keywords: Allograft; Alveolar ridge augmentation; Dental implants; Maxillary sinus floor augmentation