Mini-invasive implant placement in combination with maxillary sinus membrane perforation during transcrestal sinus floor elevation: a retrospective study
Articolo
Data di Pubblicazione:
2016
Citazione:
Mini-invasive implant placement in combination with maxillary sinus membrane perforation during transcrestal sinus floor elevation: a retrospective study / P. Toscano, C. Toscano, M. Del Fabbro. - In: THE INTERNATIONAL JOURNAL OF PERIODONTICS & RESTORATIVE DENTISTRY. - ISSN 0198-7569. - 36:2(2016), pp. 199-211. [10.11607/prd.2280]
Abstract:
The aim of this retrospective study was to report preliminary outcomes of a modified technique for transcrestal sinus floor elevation with simultaneous implant placement. A total of 165 implants were placed in 110 patients using a modified Summers technique. During implant site preparation, after fracturing the sinus floor, a small perforation of the membrane was made using the first osteotome. After grafting with anorganic bovine bone mixed with venous blood, standard-length implants were inserted. The prosthetic phase occurred after 4 to 5 months. Patients were followed for at least 2 years after loading. During the follow-up, sinus condition was assessed by cone beam computed tomography. Periapical radiographs were taken to assess graft height and peri-implant bone levels. Three implants failed within 2 months of placement, yielding an overall implant survival of 98.2%. The mean follow-up was 38.3 months (range: 28 to 60 months) from placement. All other implants were stable and peri-implant soft tissues were healthy throughout the observation period. Peri-implant bone loss averaged 0.62 ± 0.26 mm after 1 year of function. No biologic or biomechanical complications occurred. No evidence of graft material dispersion into the sinus space was detected, except for two cases that resolved spontaneously. After 1 year of loading the graft height averaged 4.8 ± 1.3 mm above the sinus floor level. In the presence of sinus membrane perforation, the proposed modified osteotome technique may allow a predictable rehabilitation of the atrophic posterior maxilla by means of standard length implants without the occurrence of adverse events.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
dental implants; osteotome technique; atrophic maxilla; gingival phenotype; surgical technique; bone-formation; part I; augmentation; survival; repair
Elenco autori:
P. Toscano, C. Toscano, M. Del Fabbro
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