Comparison of speech performance in labial and lingual orthodontic patients: A prospective study.

Dent Res J (Isfahan) · 2014 · PMC4275635 · PMID 25540661

Europe PMC

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highly significantno p-value reported

This difference in findings can be attributed to the presence of transpalatal arch[ 15 ] causing highly significant drop in frequency of the sound produced, which however, returned to the pre-treatment level in 1 week.

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