case_images: PMC8692004_01
case_images: Intraoral view showing a 3 mm diameter oroantral fistula on the right maxillary ridge.
case_images: CRID2021-7592253.003.jpg
case_images: PMC8692004_01_CRID2021-7592253.003.jpg
case_images: fig3
case_images: The intraoral examination showed a fistula about 3 mm in diameter on the right posterior maxillary ridge with normal mucosa (Figure 3). The panoramic radiograph showed a bony discontinuity in the fistula area with a relationship to the right maxillary sinus.
case_images: Intraoral view showing the closure of the OAC by a collagen membrane.
case_images: CRID2021-7592253.004.jpg
case_images: PMC8692004_01_CRID2021-7592253.004.jpg
case_images: fig4
case_images: The surgical treatment for closure of the OAC consisted of traction of a vestibular flap following the Rehrmann technique associated with a resorbable collagen membrane (Figure 4).
case_images: Intraoral view showing healing at one month.
case_images: CRID2021-7592253.005.jpg
case_images: PMC8692004_01_CRID2021-7592253.005.jpg
case_images: fig5
case_images: Follow-up at 15 days and then at one month showed good mucosal healing and disappearance of clinical signs (Figure 5).
case_images: PMC8692004_02
case_images: PMC8692004_03
case_images: Intraoral view showing a left maxillary OAC of 7 mm diameter.
case_images: CRID2021-7592253.006.jpg
case_images: PMC8692004_03_CRID2021-7592253.006.jpg
case_images: fig6
case_images: The intraoral examination demonstrated that the socket of the left maxillary wisdom tooth was persistent and with serosity all around (Figure 6).
case_images: Intraoral view showing access to the buccal fat pad in treating a left maxillary OAC.
case_images: CRID2021-7592253.007.jpg
case_images: PMC8692004_03_CRID2021-7592253.007.jpg
case_images: fig7
case_images: After the signs of infection had disappeared, the surgical closure of the OAC, as in the previous case, consisted of performing a Rehrmann flap associated with a buccal fat pad graft (Figure 7).
case_images: PMC8692004_04
case_images: Intraoral view of a recent purulent left maxillary OAC.
case_images: CRID2021-7592253.008.jpg
case_images: PMC8692004_04_CRID2021-7592253.008.jpg
case_images: fig8
case_images: The intraoral view showed a fistula of 10 mm with exposed bone (Figure 8).
case_images: Intraoral view showing healing at 40 days.
case_images: CRID2021-7592253.009.jpg
case_images: PMC8692004_04_CRID2021-7592253.009.jpg
case_images: fig9
case_images: The patient came back regularly to change the dressing until the area healed entirely and there were no clinical symptoms after 40 days (Figure 9).