Effects of semirapid maxillary expansion on conductive hearing loss

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Introduction: Conductive hearing loss is affected by corporal changes introduced into the mechanical system of the outer or middle ear. Maxillary enlargement can affect hearing loss, and the changes have been studied with pure-toned audiograms. Semi-rapid and slow methods of maxillary expansion have some advantages compared to maximum rapid expansion, but the effect on conductive hearing has not been studied. The goal of this training was to examine the long-term effects of semi-rapid maxillary expansion (SRME) using acrylic-bonded equipment using audiometric and tympanometric recordings.

Methods: The effect of SRME with attached equipment was studied in 19 growing subjects with narrowed maxillary arches and conductive hearing. Hearing level was determined by pure sound audiometric and tympanometric recordings. Four entries were taken from each topic. The first records were made before SRME, the second after maxillary expansion (average, after 3.4 months), the third after retention (average, after 6 months), and the fourth after solid device treatment (approximately). 2 years later). The data were analyzed with ANOVA. A minimal difference test was also used to determine when a change in measurement was significant.

Results: Hearing ability improved and the air-bone gap decreased statistically significantly after active dilation, and these changes were relatively stable over the last 2 periods. After maxillary enlargement, the middle ear volume rose to a statistically significant level and continued to increase until the end of treatment. No significant change in static compliance value was observed.

Conclusion: Treatment with SRME has a positive and statistically significant effect on range and normal functioning of the eustachian pipes in patients with transverse maxillary insufficiency and loss of conductive hearing.