Influence of the Covering Area of MajorConnectors of Mandibular Dentures on theAccuracy of Speech Production: A Pilot Study
Influence of the Covering Area of MajorConnectors of Mandibular Dentures on theAccuracy of Speech Production: A Pilot Study
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下颌义齿主要连接体覆盖面积对言语产生准确性影响的初步研究
DOI：
10.1159/000502954
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Noriyuki Wakabayashi
中科院分区：
文献类型：
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作者：
Junichiro Wada;Masayuki Hideshima;Keiichiro Uchikura;Yuka Shichiri;Shusuke Inukai;Hiroshi Matsuura;Noriyuki Wakabayashi
背景/目标可摘局部义齿 (RPD) 治疗初始阶段的言语障碍可能会妨碍患者对 RPD 的适应。本次准实验研究旨在探讨位于下颌前牙区的主要连接器的覆盖面积对言语产生准确性的影响。方法招募15名牙列健康的成年人（12名男性和3名女性，年龄26-40岁）。评估使用四个目标音节：[ʃi]、[ʧi]、[çi] 和 [ki]。有四种说话条件：无连接器（对照）、佩戴舌杆（5 mm 宽）、佩戴舌板（12 mm 宽）和佩戴覆盖下牙列咬合面的连接器（16 mm 宽；CO）。通过语音评估系统（VoiceAnalyzer）计算出的音段正确标签（MARC）和错误标签（MARIC）的平均出现率来评估语音产生的准确性。结果3个目标音节[ʃi]，[ʧi]和[ki]中的MARC随着CO的增加而显着下降。对于目标音节[ʃi]，[ʧi]，[ʤi]和[ʤi]和[ʤi]的MARIC显着下降。 CO 的 [çi] 显着低于对照。对于目标音节[ʧi]，带有CO的[ki]的MARIC显着高于对照。对于目标音节[çi]，带有CO的[gi]的MARIC显着高于对照。结论主要连接器覆盖下牙列的RPD在RPD治疗的初始阶段可能会干扰语音产生。采用此类 RPD 设计的修复治疗需要进一步考虑在开始治疗之前向患者提供的信息。
Background/ObjectivesSpeech impairment during the initial phase of removable partial denture (RPD) treatment can prevent patient adaptation to RPDs. This quasi-experimental study aimed to investigate the influence of the covering area of major connectors located in the mandibular anterior region on the accuracy of speech production.MethodsFifteen adults (12 men and 3 women aged 26–40 years) with healthy dentition were recruited. Four target syllables were used for the assessments:[ʃi],[ʧi],[çi], and [ki]. There were four speaking conditions: without a connector (control), wearing lingual bar (5 mm width), wearing lingual plates (12 mm width), and wearing connectors covering the occlusal surface of lower dentition (16 mm width; CO). The accuracy of speech production was evaluated by mean appearance ratio of correct labels (MARC) and incorrect labels (MARIC) of the phonetic segments which were calculated with a speech evaluation system (VoiceAnalyzer).ResultsThe MARC in the 3 target syllables [ʃi],[ʧi], and [ki] significantly decreased with CO. For the target syllable [ʃi], the MARICs of [ʧi],[ʤi], and [çi] with CO were significantly lower than that in the control. For the target syllable [ʧi], the MARIC of [ki] with CO was significantly higher than that in the control. For the target syllable [çi], the MARIC of [gi] with CO was significantly higher than that in the control.ConclusionRPDs with major connectors covering the lower dentition could disturb speech production during the initial phase of RPD treatment. Prosthodontic treatment with such RPD designs requires further consideration regarding the information given to patients before starting the treatment.