Effect of a large‐sized silicone sheet upon recovery of mastoid aeration after mastoidectomy

Abstract

This preliminary study suggested that our large-sized silicone sheet may be effective for postoperative recovery of mastoid aeration even in ears operated with SWR procedure.

Postoperative Aeration in the Middle Ear and Hearing Outcome After Canal Wall Down Tympanoplasty With Soft-Wall Reconstruction for Cholesteatoma

“…Further prospective studies may establish procedures for promoting postoperative reaeration throughout the entire middle ear cavity. The insertion of a ventilation tube, the placement of the large silicone sheet from the protympanum to the mastoid cavity in the first-stage tympanoplasty (24); tissue engineering to regenerate the middle ear mucosa, especially in the mastoid (25); and use of the pedicled temporoparietal fascial flap for SWR (26) are candidate procedures for further investigation.…”

In situ tissue engineering with synthetic self-assembling peptide nanofiber scaffolds, PuraMatrix, for mucosal regeneration in the rat middle-ear

“…We reported previously the usefulness of a large silicone sheet for recovery of mastoid aeration after staged ear surgery with soft-wall reconstruction and mastoidectomy. 3 In some of these cases, regeneration of the mucosal epithelium in the mastoid cavity was noted, though it was incomplete. 3 Clinically, there is a need for therapeutic trials based on regenerative medicine.…”

“…3 In some of these cases, regeneration of the mucosal epithelium in the mastoid cavity was noted, though it was incomplete. 3 Clinically, there is a need for therapeutic trials based on regenerative medicine. Previous experimental studies described the use of a sheet of mucosal cells grown on a collagen gel to promote mucosal regeneration, which was successfully implanted in the middle-ear after surgery.…”

Effect of the tympanostomy tube on postoperative retraction of the soft posterior meatal wall caused by habitual sniffing

“…Because the large silicone sheet covering from the ET to the mastoid was used for all patients in this study, adhesion within the mastoid caused by scar contraction may have been prevented in many cases. This seemed to result in good recovery of an airspace continuing from the ET to the mastoid cavity, and thus in the prevention of retraction of the posterior EAC wall after mastoidectomy 18…”

“…During the first‐stage operation, an SWR procedure was done after a mastoidectomy (excavation of mastoid air cells from the epitympanum to the mastoid) in all patients. Subsequently, we developed a large 0.5‐mm‐thick silicone sheet18 that has a unique shape and covers the whole area from the ET, mesotympanum, and epitympanum to the mastoid, which was placed during the first‐stage operation and removed during the second‐stage operation in all patients. Patients with congenital cholesteatoma were excluded.…”