Abstract | INTRODUCTION: METHODS: The effects of SRME with a bonded appliance were studied in 19 growing subjects who had narrow maxillary arches and conductive hearing loss. Hearing levels were determined with pure-tone audiometric and tympanometric records. Four records were taken from each subject. The first records were taken before SRME, the second after maxillary expansion (mean, 3.4 months later), the third after retention (mean, 6 months later), and the fourth after fixed-appliance treatment (approximately 2 years later). The data were analyzed with ANOVA. The least-significant difference test was also used to determine when the changes in the measurements were significant. RESULTS: Hearing improved and air-bone gaps decreased at a statistically significant level after active expansion, and these changes remained relatively stable during the last 2 periods. Middle-ear volume increased at a statistically significant level after maxillary expansion and continued to increase until the end of treatment. No significant change was observed in the static compliance value. CONCLUSIONS: SRME treatment has a positive and statistically significant effect on both hearing and normal functioning of the eustachian tubes in patients with transverse maxillary deficiency and conductive hearing loss.
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Authors | Nichat Kilic, Hüsamettin Oktay, Erol Selimoğlu, Abdulvahit Erdem |
Journal | American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics
(Am J Orthod Dentofacial Orthop)
Vol. 133
Issue 6
Pg. 846-51
(Jun 2008)
ISSN: 1097-6752 [Electronic] United States |
PMID | 18538248
(Publication Type: Journal Article)
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Topics |
- Acoustic Impedance Tests
- Adolescent
- Analysis of Variance
- Audiometry, Pure-Tone
- Child
- Ear, Middle
(anatomy & histology)
- Eustachian Tube
(physiology)
- Female
- Hearing Loss, Conductive
(complications, therapy)
- Humans
- Male
- Malocclusion
(complications, therapy)
- Orthodontic Appliances
- Palatal Expansion Technique
(instrumentation)
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