Effects of Hawley retainers on consonants and formant frequencies of vowels | Zendy

Maviş Emel Kulak Kayıkçı | Zendy; Seden Akan | Zendy; Semra Ciğer | Zendy; Soner Özkan | Zendy

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Effects of Hawley retainers on consonants and formant frequencies of vowels

Author(s) -

Maviş Emel Kulak Kayıkçı,

Seden Akan,

Semra Ciğer,

Soner Özkan

Publication year - 2011

Publication title -

the angle orthodontist

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.116

H-Index - 86

eISSN - 1945-7103

pISSN - 0003-3219

DOI - 10.2319/032911-226.1

Subject(s) - retainer , formant , audiology , articulation (sociology) , manner of articulation , tongue , duration (music) , psychology , medicine , orthodontics , speech recognition , acoustics , vowel , computer science , engineering , mechanical engineering , politics , law , political science , physics , pathology

Objective: To assess (1) whether Hawley retainers cause speech disturbance and (2) the duration of speech adaptation to Hawley retainers with objective and subjective tests. Materials and Methods: Twelve adolescents, aged 11.11 to 18.03 years, were included in this study. The assessment of speech sounds were done subjectively using an articulation test and objectively using acoustic analysis before and after Hawley retainer application. Results: After wearing Hawley retainers, patients showed statistically significant speech disturbances on consonants [ş] and [z]. Regarding the vowels, statistically significant changes were recorded with [i], while F1 increased and F2 and F3 decreased. Conclusions: The tongue changes its target position with the application of a foreign body within the mouth; however, in time it adapts to that new situation.

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