A prospective randomized controlled trial of two‐window versus solo‐window technique by lateral sinus floor elevation in atrophic posterior maxilla: Results from a 1‐year observational phase

Abstract

The two-window technique could facilitate faster maturation and consolidation of the grafted volume and is an effective alternative for rehabilitation of severely atrophic posterior maxilla with multiple missing posterior teeth.

A prospective randomized controlled trial of the two‐window technique without membrane versus the solo‐window technique with membrane over the osteotomy window for maxillary sinus augmentation

“…Avila‐Ortiz and colleagues showed a remarkable negative correlation between the osteotomy dimensions and NB formation. In a previous study, the two‐window technique effectively induced greater maturation of endo‐sinus bone (42.32% NB) than the solo‐window technique (26% NB). It can be inferred that the two‐window technique, with a residual bony beam >5 mm in length, effectively ensures graft stabilization within the sinus cavity and improves corticalization of the wound surface.…”

“…20,21 Avila-Ortiz and colleagues 15 showed a remarkable negative correlation between the osteotomy dimensions and NB formation. In a previous study, 8 The presence of a bone beam between the two windows has additional advantages. Masticatory forces are dissipated from the alveolar process to three enhanced bone pillars in the maxilla: the canine, maxillozygomatic, and pterygomaxillary pillars.…”

“…8 However, the present study applied a bio-resorbable membrane to cover the osteotomy site during both solo-and twowindow maxillary sinus augmentation. 8 Controversy surrounds the necessity of barrier coverage of the osteotomy site. Tarnow and collegues 9 reported that placement of a GORE-TEX (W. L. Gore & Associates, Inc., Newark, DE) membrane over the lateral osteotomy site resulted in a 100% implant survival rate, compared with 93% when no membrane was applied.…”

“…The two‐window technique is applied to avoid fracturing the maxillary sinus septa, if present . In cases of multiple missing posterior teeth requiring large‐scale bone augmentation, this technique can be an effective treatment option to avoid the excessive removal of lateral bone . However, the present study applied a bio‐resorbable membrane to cover the osteotomy site during both solo‐ and two‐window maxillary sinus augmentation …”

Influence of crown‐to‐implant ratio and different prosthetic designs on the clinical conditions of short implants in posterior regions: A 4‐year retrospective clinical and radiographic study

“…Standardized panoramic radiographs were obtained using an X-ray device (Planmeca ProMax Dimax3 Ceph, Planmeca, Helsinki, Finland) under the same conditions: An X-ray voltage of 60 to 62 kV, a current of 8 to 12 mA, and an exposure time of 16 seconds, as described in our previous studies. 8,17 As shown in Figure 1 As shown in Figure 2, two types of C/I ratios were calculated:…”