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Clinical Efficacy of the Graft Free Slit-Window Sinus Floor Elevation Procedure: A 2-Year Randomized Controlled Clinical Trial Publisher Pubmed



Ranaan J1 ; Bassir SH1, 2 ; Andrada L1 ; Shamshiri AR3 ; Maksoud M1 ; Raanan R4 ; Guze K1
Authors
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Authors Affiliations
  1. 1. Division of Periodontology, Department of Oral Medicine, Infection, and Immunity, Harvard School of Dental Medicine, Boston, MA, United States
  2. 2. Department of Periodontology, School of Dental Medicine, Stony Brook University, Stony Brook, NY, United States
  3. 3. Department of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
  4. 4. Private Practice, Beverly Hills, CA, United States

Source: Clinical Oral Implants Research Published:2018


Abstract

Objective: Slit-window technique is a lateral approach sinus floor elevation (SFE) procedure that utilizes a rigid resorbable membrane in conjunction with stabilizing bony slits to tent the Schneiderian membrane without addition of grafting materials. The aim of this randomized clinical trial was to compare clinical and radiographic outcomes of the Slit-window SFE with those of SFE with bone grafting. Material and Methods: Thirty-three patients with 38 edentulous sites were included. Edentulous sites were randomly allocated to the Slit-window SFE or SFE with bone grafting. Simultaneous with SFE, each site received two dental implants. Implant stability quotient (ISQ) values were recorded at baseline and monthly visits for 8 months. The bone coverage and bone height gain at implant sites were recorded on cone beam computed tomography (CBCT) scans 6 and 24 months postoperatively. Results: There were no significant differences in the mean ISQ values between the groups at any time point (p > 0.05). All implants in both groups were found to have complete bone coverage. Significant increases in the bone height were found 6 and 24 months postoperatively in both groups (p < 0.001). Conclusions: Within limitations of the present study, it can be concluded that the Slit-window SFE technique without the need for bone grafting resulted in sufficient bone height gain around implants placed simultaneous with the SFE procedures. The bone height around these implants was stable during the 2-year follow-up period. The treatment outcomes for these implants were comparable to those placed simultaneous with lateral approach SFE in conjunction with bone grafting. © 2018 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd
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