Loading clinical trials...
Loading clinical trials...
Showing 1-4 of 4 trials
NCT06066086
Background The chronic oroantral fistulas (COAF) is an epithelized communication that is formed between the squamous epithelium of the oral cavity and the pseudo-stratified columnar ciliated epithelium of the maxillary sinus with a high recurrent rate. The use of palatal flaps has been documented for treating such fistulae. The presence of the oroantral fistula at the area of second molars or maxillary tuberosity could complicate the use of the palatal rotational flap where the arch of its rotation is increased leading to compromised blood supply. The use of the buccal flap is not advocated because it is very thin. Rationale Double or triple-layer closure is indicated to avoid recurrence of the COAF. Different layers have been documented to minimize the risk of recurrence and reinforce buccal flaps. The oral tissues at the oral side of the oroantral fistula could used as an additional layer with buccal advancement flap and buccal fat to omit the use of palatal flap with its subsequent problems in the most posterior aspect of the maxilla Study objectives Therefore, this study will be conducted to evaluate the use of hinge flaps to reinforce the buccal advancement flap for surgical closure of the COAF in the most posterior area of the maxilla Methods The hinge flap will be performed at the oral side of the COAF to close the perforation in the sinus membrane. The oral side of the COAF will be closed with buccal advancement flap. The success rate, recurrence, time of surgery, postoperative complications, will be evaluated.
NCT07476664
Oroantral communication (OAC) is an abnormal opening between the oral cavity and the maxillary sinus that may occur after extraction of posterior maxillary teeth. If not treated promptly, it can lead to sinus contamination, chronic infection, and development of an oroantral fistula requiring more complex surgical management. The standard surgical treatment is closure with a buccal advancement flap (Rehrmann technique). However, this method may reduce vestibular depth, displace the mucogingival junction, and decrease the width of keratinized gingiva. This prospective clinical study compares two surgical approaches for closure of acute OAC diagnosed within 24 hours after tooth extraction: placement of a resorbable collagen membrane beneath the mucosa versus the conventional buccal advancement flap. Clinical and radiographic parameters related to soft tissue architecture, postoperative recovery, and bone healing are evaluated during a 90-day follow-up period.
NCT05910073
The aim of this study is to assess the success rate, of using a Lamina Curved plate (Osteobiol® Laboratory) in the treatment of persistent OACs over 5mm.
NCT05407493
The aim of this study is to compare the clinical results of combining a pedicle connective palatal flap with a trapezoid buccal flap with the standard buccal flap alone in the closure of oro-antral fistula (OAF), and the buccal flap combined with leukocyte and platelet rich fibrin.