الفهرس 
Material and methodsOnly 14 pages are availabe for public view
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Abstract
Introduction and rat” nale:
The principle caus s of failure to achieve a dry ear in
mastoidectomy were ina equate meatoplasty, high facial ridge,
inadequate removal of ir cells and failure to exteriorize all
cholesteatoma. Many au hors have studied these factors trying to.
eliminate the cavity proble . In this work we investigated the effect of
meatoplasty on the state of he cavity.
Objective:
To evaluate the sta e of the mastoid cavity In relation to
meatoplasty versus meat conchoplasty in open technique of chr.
S.O.M. and to follow u the healing process of meatoplasty and
meatoconchoplasty also practical method for decumentation and
calculation of areas was se rched for .
Design:
The percentage of d y and wet cases in both meatoplasty and
meatoconchoplasty were determ ined. The area of meatoplasty and
I
meatoconchoplasty was d termined by photography at the end of the
surgery procedure. Six onths later the percentage of dry and wet
cases was calculated in oth techniques, In all patients, the area,
If,;.
volume and epithelizat on wer~ measured . The volume was
AreaNolume (AN) ra io is a more accurate indicator to the state
of the cavity. The pr per selection of meatoplasty and
meatocnchoplasty should b considered according to NY ratio. The
volume of the cavity has a significant relation with the state of the
cavity as cases with large olume are more susptible to be wet. The
epithelization of the mastoi cavity was not affected by the state of the
cavity. Lastly photographic documentation and autocad program
calculation can be an accur te and objective method of area and shape
measurement. However, si pIe scales can be desigined for proctical
measuring of the meatoplas.