Mucosal flaps prevent neo‐osteogenesis after frontal drill‐out procedures: A computer‐assisted study

Objective Although several mucosal flap techniques have been reported to improve the outcomes in Draf IIb and III procedures, there is scant knowledge on frontal ostium neo-osteogenesis after reconstruction with mucosa flap. This study evaluates potential benefits of flaps sinus drill-out procedures. Methods Forty-three patients who underwent extended were enrolled. Among them, 20 had neo-ostium (FNO) reconstructed by (group A), 23 did not B). The cross-sectional area FNO, frontonasal bone, amount (FNOG) measured OsiriX®. In addition, Global Osteitis Scoring Scale (GOSS), Lund–Mackay score (LMS), Lund–Kennedy (LKS) also evaluated. Results At one year postoperatively, remaining was significantly larger group A (p = .001), less FNOG < .05). month 12 postoperative GOSS decreased A. contrast, it slightly increased B. Both average LKS LMS reduced groups B at postoperatively. Still, than that Conclusion Coverage bare bone could prevent excessive keep open widely. Level Evidence 2b