Comparing the effects of Essix and Hawley retainers on the acoustics of speech

Atik, Ezgi; Aydınlı, Fatma Esen; Kayikci, Mavis Emel Kulak; Ciğer, Semra

doi:10.1093/ejo/cjw050

Cited by 23 publications

(20 citation statements)

References 17 publications

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“…The percentage of bleeding sites increased in patients wearing VFR, which also confirmed the gingival problem, in agreement with our research results. Hawley retainer has some influence on the pronunciation of patients in the early stage, and the lip steel wire affects the patient’s appearance [ 33 ]. However, it still has some advantages in terms of periodontal health.…”

Section: Discussionmentioning

confidence: 99%

Assessment of the effect of vacuum-formed retainers and Hawley retainers on periodontal health: A systematic review and meta-analysis

et al. 2021

PLoS ONE

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Background Recently, increasing attention has been paid to the periodontal health of orthodontic patients in the maintenance stage in clinical practice. The focus of this meta-analysis was to compare the effects of vacuum-formed retainers (VFR) and Hawley retainers (HR) on periodontal health, in order to provide a reference for clinical selection. Methods From the establishment of the database until November 2020, a large number of databases were searched to find relevant randomized control trials, including the Cochrane Library databases, Embase, PubMed, Medline via Ovi, Web of Science, Scopus, Grey Literature in Europe, Google Scholar and CNKI. Related literature was manually searched and included in the analysis. Two researchers screened the literature according to relevant criteria. The size of the effect was determined using RevMan5.3 software, and the mean difference and 95% confidence intervals (CI) were used to estimate the results using a random effects model. Results This meta-analysis included six randomized controlled trials involving 304 patients. The results of the meta-analysis showed that there was no statistical difference in sulcus probing depth status between the VFR group and the HR group, including at 1, 3, and 6 months. Compared with the VFR group, the HR group showed a lower gingival index at 1 month (mean difference = 0.12, 95%CI: 0.06 to 0.19) and 3 months (mean difference = 0.11, 95%CI: 0.06 to 0.17), while there was no statistically significant difference at 6 months (mean difference = 0.10, 95%CI: -0.07 to 0.27). The plaque index of the HR group also showed a good state at 1 month (mean difference = 0.06, 95%CI: 0.01 to 0.12), 3 months (mean difference = 0.12, 95%CI: 0.08 to 0.16), and 6 months (mean difference = 0.19, 95%CI: 0.09 to 0.29). Subgroup analysis of PLI showed that when all teeth were measured, PLI status was lower in the HR group at 6 months (mean difference = 0.32, 95%CI: 0.18 to 0.46). PLI status was also low for the other teeth group (mean difference = 0.15, 95%CI: 0.08 to 0.22). Conclusion Our meta-analysis showed that patients using the Hawley retainer had better periodontal health compared with those using vacuum-formed retainers. However, more research is needed to look at the periodontal health of patients using these two retainers.

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Section: Discussionmentioning

confidence: 99%

Assessment of the effect of vacuum-formed retainers and Hawley retainers on periodontal health: A systematic review and meta-analysis

et al. 2021

PLoS ONE

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“…The most common examples of orthodontic appliances having a direct effect on speech efficiency are lingual fixed appliances (5)(6)(7) , tongue thrusting controlling appliances (8,9) , palatal expansion appliances (10,11) and all removable appliances (12)(13)(14) .…”

Section: Introductionmentioning

confidence: 99%

Effects Of Removable Anterior Expansion Screw on Speech Intelligibility In a Group of Egyptian Children

Rashid

Feky

Goad

et al. 2021

Egyptian Dental Journal

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“…27,28 However, other studies that performed an objective evaluation indicated a longer period of adaptation, reaching more than 2 months. 14,29 Speech changes found in this study can be explained by the modification of the oral cavity and palate, consequently the movement of the tongue. Retainers are strange bodies, causing speech disturbs of vowels and mainly consonants.…”

Section: Discussionmentioning

confidence: 62%

“…These findings are in agreement with the other studies that evaluated the influence of speech on upper retainers. 14,[27][28][29][30] Frequency values in a general way changed significantly from T0 to T1, sometimes increasing their value (Tables III, V, VI and VII) and others decreasing (Tables IV and VII). However, after 21 days of contention use (T2), although the difference for T0 decreased in relation to the T1, the values were not statistically similar to T0 in many cases.…”

Section: Discussionmentioning

confidence: 99%

“…When the retainers evaluated in this study were compared, the worst results were exactly for CWA, and the best were for AHWA, agreeing that the smaller the amount of acrylic in the anterior region, the smaller the change in speech. Some studies compared Hawley and VF, 14,29 and observed greater changes for the acrylic retainer. However, our study did not find this difference.…”

Section: Discussionmentioning

confidence: 99%

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Influence of different orthodontic upper retainers in speech: analysis by laypersons and acoustic analysis

Higa¹

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À Prof. Dra. Giédre Berretin-Felix, por receber de braços abertos esse trabalho e me ajudar de forma tão magnífica. Obrigado. À Prof. Dra. Alcione Ghedini Brasolotto, pelos conselhos prestados referentes ao conteúdo deste trabalho. Muito obrigado. À mestranda de fonoaudiologia Pamela, pelo tempo desprendido ajudando com muita dedicação. Sempre agradeço por encontrar pessoas dispostas a ajudar com todo o coração. Obrigado. Aos voluntários desta pesquisa, primeiramente aqueles que participaram da amostra do Diego Lorenzoni, que muitos nem sabem que me ajudaram, e me sinto na obrigação de agradecê-los

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Comparing the effects of Essix and Hawley retainers on the acoustics of speech

Abstract: The Hawley retainer affected articulatory movements in consonant-vowel combinations more prominently than the Essix retainer did. Voice onset time of the consonant [d] in the Hawley group was shorter than normal, indicating rapid articulatory movement in the alveolar region.

Cited by 23 publications

References 17 publications

Assessment of the effect of vacuum-formed retainers and Hawley retainers on periodontal health: A systematic review and meta-analysis

Assessment of the effect of vacuum-formed retainers and Hawley retainers on periodontal health: A systematic review and meta-analysis

Effects Of Removable Anterior Expansion Screw on Speech Intelligibility In a Group of Egyptian Children

Influence of different orthodontic upper retainers in speech: analysis by laypersons and acoustic analysis

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