ORIGINAL RESEARCH
Voice Onset Time in Turkish-speaking Children with Repaired Cleft Lip and/or Palate: A Case-control Study
Türkçe Konuşan Opere Dudak/Damak Yarıklı Çocuklarda Sesi Başlatma Zamanı Parametresi: Vaka-kontrol Çalışması
Received Date : 13 Dec 2023
Accepted Date : 18 Apr 2024
Available Online : 30 Apr 2024
Hakan GÖLAÇa, Adnan GÜLAÇTIa, Güzide ATALIKa, Şadiye BACIK TIRANKa,
Hakan TUTARb, Bülent GÜNDÜZc
aGazi University Faculty of Health Sciences, Department of Speech and Language Therapy, Ankara, Türkiye
bGazi University Faculty of Medicine, Department of Otolaryngology, Ankara, Türkiye
cGazi University Faculty of Health Sciences, Department of Audiology, Ankara, Türkiye
Doi: 10.24179/kbbbbc.2023-100737 - Makale Dili: EN
Journal of Ear Nose Throat and Head Neck Surgery. 2024;32(2):73-78.
Copyright © 2020 by Turkey Association of Society of Ear Nose Throat and Head Neck Surgery. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
ABSTRACT
Objective: Voice onset time (VOT) may be affected by
deficits in laryngeal or supralaryngeal structures. This study aimed to
compare the VOT parameters between the children with repaired cleft
lip and/or palate (CL/P) and their healthy peers. Material and Methods:
Thirty-nine children with repaired CL/P (X̄±SD age; 11.51±3.53
years) and 39 healthy children (X̄±SD age; 11.44±3.40 years) were included
in the study. Clinical data including age, gender, speaking language,
hearing status, type of CL/P, presence of lip/palate repairment,
results of speech-sound disorder examination, and presence of malocclusion
and/or oronasal fistula were retrospectively collected. VOT values
for /pa/, /ta/, and /ka/ syllables were obtained using Praat software
and compared between the study group (SG) and the control group
(CG). Results: VOT values differed significantly between the (SG) and
(CG) which were prolonged in the SG for all measured /pa/ (p=0.015),
/ta/ (p=0.045), and /ka/ (p=0.037) syllables. In the SG, the longest VOT
was observed for the /ka/, /ta/, and pa/ syllables, respectively. Conclusion:
The presence of CL/P may have contributed to prolonged VOT
values in Turkish-speaking children. Since VOT is a reliable acoustic
parameter closely interacting with speech structures, clinicians should
be aware of this phenomenon.
Keywords: Acoustic analysis; children; cleft lip/palate; voice onset time
ÖZET
Amaç: Ses üretimi ile ilgili zamansal bir ölçüm parametresi
olan sesi başlatma zamanı (voice onset time-VOT), larengeal ve supralarengeal
yapılardaki yapısal sorunlardan etkilenmektedir. Bu çalışmanın
amacı, opere edilmiş dudak/damak yarıklı çocukların VOT
parametrelerini sağlıklı akranları ile karşılaştırmaktır. Gereç ve Yöntemler:
Çalışmaya 39 opere dudak damak yarıklı çocuk (X̄±SS yaş;
11,51±3,53 yıl) ve 39 sağlıklı çocuk (X̄±SS yaş; 11,44±3,40 yıl) dâhil
edilmiştir. Yaş, cinsiyet, konuşulan dil, işitme testi sonuçları,
dudak/damak yarığı tipi, dudak/damak onarımı bilgileri, konuşma sesi
bozukluğu değerlendirme bulguları, maloklüzyon ve oronazal fistül
varlığına ilişkin klinik veriler geçmişe dönük toplanmıştır. Praat yazılımı
kullanılarak /pa/, /ta/ ve /ka/ heceleri için VOT değerleri elde edilmiş
ve çalışma grubu ile kontrol grubu arasında karşılaştırılmıştır.
Bulgular: Çalışma grubunda ölçülen VOT değerleri tüm /pa/
(p=0,015), /ta/ (p=0,045) ve /ka/ (p=0,037) heceleri için kontrol grubuna
göre istatistiksel olarak anlamlı derecede uzun bulunmuştur.
Dudak/damak yarıklı çocuklarda en uzun VOT değerleri sırasıyla /ka/,
/ta/ ve pa/ heceleri için bulunmuştur. Sonuç: Türkçe konuşan çocuklarda
dudak/damak yarıklarının VOT süresinin uzamasına neden olduğu
düşünülebilir. Konuşma üretiminde kullanılan anatomik yapılar
ile güvenilir bir akustik ölçüm parametresi olarak kabul edilen VOT
arasında önemli bir ilişki olduğu için yapılan klinik değerlendirmelerde
VOT parametresinin de göz önünde bulundurulması faydalı olabilir.
Anahtar Kelimeler: Akustik analiz; çocuk; dudak/damak yarıkları; voice onset time
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