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[Correlation analysis on the malocclusion and articulation of skeletal angle III malocclusion in mixed dentition]
Lan-Lei Wang1, Jia-Feng Yang, Jie Chen
1Dept. of Dentistry, The Affiliated Hospital of Shandong Traditional Medical University, Jinan 250011, China.
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.
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