替牙期安氏Ⅲ类骨性错畸形与语音功能的相关分析

目的 探讨替牙期安氏Ⅲ类骨性反与患儿语音功能的相关关系。方法 选择38例替牙期安氏Ⅲ类骨性反患儿为试验组，并随机选择40名替牙期正常儿童为对照组。由语音专家对试验组和对照组儿童的语音进行判听，将患儿发音错误数量与其X线头影测量片的牙、颌、面的软硬组织测量结果进行相关分析。结果 替牙期骨性安氏Ⅲ错患儿大多数存在发音异常，错误发音与反覆盖及OBJ（覆与覆盖之和）呈高度相关，与上下切缘间的距离呈高度正相关，与TD-PW（舌背最高点至咽后壁距离）呈正相关。结论 替牙期安氏Ⅲ类骨性反患儿大部分存在语音功能障碍，发音功能障碍与切牙关系及舌位置有关。

Correlation Analysis on the Malocclusion and Articulation of Skeletal Angle Ⅲ Malocclusion in Mixed Dentition

OBJECTIVE: To investigate the effects of skeletal Class III malocclusion in mixed dentition on speech articulation and to look for which factors lead to the speech errors. METHODS: Thirty-eight children with skeletal Angle Ill malocclusion in mixed dentition were selected as a sample group and 40 children with normal occlusion in mixed dentition as a control group. Two phoneticians evaluated their articulations and wrote down error phonemes respectively. The correlation analysis was undertaken between the number of errors and the measurements of patients' cephalometry. RESULTS: The number of errors were correlated significantly with overbite, UI-LI, OBJ (OB+OJ) and TD-PW. CONCLUSION: There is articulatory malfunction in the majority of skeletal Angle III malocclusion patients in mixed dentition. Articulatory malfunction is related to the position of incisors and the tongue.