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Results for “MASTOID”

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At least 1,063 records · Page 59Linked to original sources
PubMed2004

Reconstruction of mastoid cortex defect using bone morphogenetic protein: an experimental study in the guinea pig.

OBJECTIVE: The aim of this experimental study was to examine whether recombinant human bone morphogenetic protein-2 (rhBMP-2) could induce new bone formation in a small hole drilled through the temporal bone near the external auditory canal wall in guinea pigs. MATERIAL AND METHODS: A 4-mm diameter hole was made in the center of the temporal bone and a piece of collagen sheet infiltrated with rhBMP-2 was placed in the hole. New bone formation was confirmed by means of X-ray examination and the bone mineral density was quantified using dual-energy X-ray absorptiometry 1, 2 and 4 weeks after treatment. RESULTS: The bone mineral density in the rhBMP-2-treated group was significantly increased compared to the control group. CONCLUSION: These results suggest that rhBMP-2 induces remarkable new bone formation in the temporal bone and will be useful in clinical ear surgery.

Animals↗
PubMed1996

Mastoid surgery in the only hearing ear.

Every otologic procedure carries the risk of damage to the inner ear. On the other hand, cholesteatoma and uncontrolled tubotympanic disease can lead to partial or total sensorineural loss, as well as intracranial complications. Our experience of the surgical management of eight patients with an only hearing ear is presented. There were no dead ears in this series and no significant worsening of inner ear function. The air conduction pure-tone average was worse in two patients without change in bone conduction. Of the eight patients, six wear a hearing aid with success and two patients manage without an aid. The present small series confirms that patients at risk of anacusis from cholesteatoma or chronic suppurative otitis media can be offered, in experienced tertiary referral units, a safe method of stabilizing the ear and preserving useful hearing.

Adult↗