A retrospective comparative study of extensive sinus membrane perforations repairing using collagen membranes with pouch and nonpouch techniques

Abstract

Objectives

To evaluate the clinical and radiological outcomes of employing collagen membranes with pouch and nonpouch techniques to repair extensive maxillary sinus membrane perforation.

Study design

Patients who experienced extensive maxillary sinus membrane perforation (>10 mm) during lateral window maxillary sinus floor elevation (LWMSFE) were included and treated with either the pouch or nonpouch techniques.

Results

The number of patients treated with the pouch technique and those treated with the nonpouch technique was 10 each. For the pouch and nonpouch techniques, the mean vertical bone height gain were 17.04 ± 1.64 mm and 16.42 ± 2.41 mm; the mean bone density were 720.10 ± 20.58 HU and 692.85 ± 40.03 HU; and the mean bone augmentation volume were 2720.07 ± 680.58 mm³ and 3238.84 ± 781.02 mm³. The mean vertical bone height gain, bone density, and bone augmentation volume were not statistically different between two techniques (P > .05). No implant was observed for loss during the follow-up period of 8-12 months after crown placement.

Conclusions

The success of the pouch and nonpouch techniques in repairing extensive membrane perforation is evident in terms of clinical and radiographic outcomes. Regardless of whether the pouch or nonpouch technique is used; secure and stable implant restoration results can be achieved after the maxillary sinus membrane perforation is repaired.