PMC8692004_01
Intraoral view showing a 3 mm diameter oroantral fistula on the right maxillary ridge.
CRID2021-7592253.003.jpg
PMC8692004_01_CRID2021-7592253.003.jpg
fig3
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.
Intraoral view showing the closure of the OAC by a collagen membrane.
CRID2021-7592253.004.jpg
PMC8692004_01_CRID2021-7592253.004.jpg
fig4
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).
Intraoral view showing healing at one month.
CRID2021-7592253.005.jpg
PMC8692004_01_CRID2021-7592253.005.jpg
fig5
Follow-up at 15 days and then at one month showed good mucosal healing and disappearance of clinical signs (Figure 5).
PMC8692004_02
PMC8692004_03
Intraoral view showing a left maxillary OAC of 7 mm diameter.
CRID2021-7592253.006.jpg
PMC8692004_03_CRID2021-7592253.006.jpg
fig6
The intraoral examination demonstrated that the socket of the left maxillary wisdom tooth was persistent and with serosity all around (Figure 6).
Intraoral view showing access to the buccal fat pad in treating a left maxillary OAC.
CRID2021-7592253.007.jpg
PMC8692004_03_CRID2021-7592253.007.jpg
fig7
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).
PMC8692004_04
Intraoral view of a recent purulent left maxillary OAC.
CRID2021-7592253.008.jpg
PMC8692004_04_CRID2021-7592253.008.jpg
fig8
The intraoral view showed a fistula of 10 mm with exposed bone (Figure 8).
Intraoral view showing healing at 40 days.
CRID2021-7592253.009.jpg
PMC8692004_04_CRID2021-7592253.009.jpg
fig9
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).