Summary
During post-set hardening the self-curing bone substitute Ionocem develops a solid bond with the adjacent bony tissue, leaving no empty spaces. The fully matured material can be fixed to bone with freshly mixed cement or it may be used as a blank, e.g. an ossicular implant (Ionos ossicle). After insertion of 945 alloplastic middle ear prostheses over a period of 4.5 years, the take-rate was 94%. In some patients revision surgery became necessary, in 50% of cases because of prosthesis dislocation. A granular version of the cement (Ionogran) was implanted in 46 ears for obliteration of mastoid cavities and showed complete mucosal overgrowth within a maximal period of 3 months. Posterior canal wall reconstruction with the self-curing bone substitute was done in 74 patients, with revisions required in 12 cases because of persistent epithelial deficits in the external ear canal or epitympanic retraction. Overall results showed that the ionomer-based cement was a useful substitute for bone in reconstructive otologic surgery.
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References
Bellucci RJ (1973) Dual classification of tympanoplasty. Laryngoscope 83:1754–1758
Feenstra L, Sanna M, Zini C, Gamoletti R, Delogu P (1985) Surgical treatment of brain herniation into the middle ear and mastoid. Am J Otol 6:311–315
Geyer G (1992) Glasionomerzement als Knochenersatzmaterial in der Ohrchirurgie — tierexperimentelle and klinische Untersuchungen. Babelegi, Pretoria
Geyer G, Wiedenmann M, Borrmann I (1993) Ionomerzement als Knochenersatzmaterial in der plastisch-rekonstruktiven Schädelchirurgie — tierexperimentelle Untersuchungen and klinische Ergebnisse. Kongreßband der 30. Jahrestagung der Deutschen Gesellschaft für Plastische and Wiederherstellungschirurgie, Berlin (in press)
Ionos med. Produkte (1990) Fachinformation zum Knochenersatzmaterial V-O CEM. Seefeld
Jonck LM, Grobbelaar CJ, Strating H (1989) Biological evaluation of glass-ionomer cement (KETAC-O) as an interface material in total joint replacement. A screening test. Clin Mater 4: 201–224
Jonck LM, Grobbelaar CJ, Strating H (1989) The biocompatibility of glass-ionomer cement in joint replacement: bulk testing. Clin Mater 4:85–107
Müffler J, Geyer G, Helms J (1993) Ionomerzement in der Cochlear-Implantat-Chirurgie. Laryngol Rhinol Otol 72:36–38
Shea JJ, Jr, Malenbaum BT, Moretz WH Jr (1984) Reconstruction of the posterior canal wall with Proplast. Otolaryngol Head Neck Surg 92:329–333
Wilson AD (1974) Alumino-silicate polyacrylic acid and related cements. Br Polym 16:165–179
Wilson AD, McLean JW (1988) Glass-ionomer cement. Quintessence, Chicago
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Geyer, G., Helms, J. Ionomer-based bone substitute in otologic surgery. Eur Arch Otorhinolaryngol 250, 253–256 (1993). https://doi.org/10.1007/BF00186221
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DOI: https://doi.org/10.1007/BF00186221