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Cho SW, Cho YB, Cho HH. Mastoid obliteration with silicone blocks after canal wall down mastoidectomy. Clin Exp Otorhinolaryngol. 2012;5(1):23-7doi: 10.3342/ceo.2012.5.1.23.
Cho, S. W., Cho, Y. B., & Cho, H. H. (2012). Mastoid obliteration with silicone blocks after canal wall down mastoidectomy. Clinical and experimental otorhinolaryngology, 5(1), 23-7. https://doi.org/10.3342/ceo.2012.5.1.23
Cho, Sung Woo, et al. "Mastoid obliteration with silicone blocks after canal wall down mastoidectomy." Clinical and experimental otorhinolaryngology vol. 5,1 (2012): 23-7. doi: https://doi.org/10.3342/ceo.2012.5.1.23
Cho SW, Cho YB, Cho HH. Mastoid obliteration with silicone blocks after canal wall down mastoidectomy. Clin Exp Otorhinolaryngol. 2012 Mar;5(1):23-7. doi: 10.3342/ceo.2012.5.1.23. Epub 2012 Mar 22. PMID: 22468198; PMCID: PMC3314801.
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Clin Exp Otorhinolaryngol. 2012 Mar;5(1):23-7. doi: 10.3342/ceo.2012.5.1.23. Epub 2012 Mar 22.

Mastoid obliteration with silicone blocks after canal wall down mastoidectomy.

Clinical and experimental otorhinolaryngology

Sung Woo Cho, Yong-Bum Cho, Hyong-Ho Cho

Affiliations

  1. Department of Otolaryngology-Head and Neck Surgery, Chonnam National University Medical School, Gwangju, Korea.

PMID: 22468198 PMCID: PMC3314801 DOI: 10.3342/ceo.2012.5.1.23

Abstract

OBJECTIVES: To evaluate the usefulness of silicone blocks as graft material for mastoid cavity obliteration in the prevention of problematic mastoid cavities after canal wall down mastoidectomies.

METHODS: Retrospective evaluation of 20 patients who underwent mastoid obliteration with silicone blocks between 2002 and 2009 at the Chonnam National University Hospital. The cases consisted of 17 patients with chronic otitis media with cholesteatoma and 3 patients with adhesive otitis media. The postoperative follow-up period was an average 49 months (range, 6 to 90 months). The surgical technique used at our institution composed four major steps: First, the canal wall down mastoidectomy was performed and the middle ear procedure was completed. The silicone blocks were used to fill up the mastoidectomized cavity. Then, a cortical bone pate was used to cover the surface of the silicone blocks. Finally, temporalis fascia and a split musculoperiosteal flap were used to surround the bone pate for reinforcement of the reconstructed canal wall. We examined postoperative success rate and hearing outcomes.

RESULTS: In 19 cases (95%), the reconstructed canal wall maintained a cylindrical shape and the ear drum healed without perforation. In only 1 case (5%), the reconstructed canal wall was destroyed with ear drum perforation. The mean improvement in air-bone gap was about 12 dB (P<0.05), and the mean improvement in air-conduction was about 16 dB (P<0.05).

CONCLUSION: We suggest that silicone blocks could be valuable resources as graft materials for mastoid obliteration after canal wall down mastoidectomies.

Keywords: Cholesteatoma; Mastoid; Reconstructive surgical procedures; Silicones

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