KMID : 0361920170470030151
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Korean Journal of Orthodontics 2017 Volume.47 No. 3 p.151 ~ p.157
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Comparison of masticatory efficiency according to Angle¡¯s classification of malocclusion
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Bae Jung-In
Son Woo-Sung Kim Seong-Sik Park Soo-Byung Kim Yong-Il
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Abstract
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Objective: The objective of this study was to investigate the differences in masticatory efficiency among patients with different Angle¡¯s classes of malocclusion and to assess the correlation between masticatory efficiency and the occlusal contact area.
Methods: The mixing ability index (MAI) was calculated for measuring masticatory efficiency of 61 adult patients according to Angle¡¯s classifications of malocclusion. The study included 25, 15, and 21 patients with Angle¡¯s Class I, II, and III malocclusions, respectively. Silicone interocclusal recording material was used to measure the occlusal contact area.
Results: Both the MAI and occlusal contact area showed the highest average values in the Class I malocclusion group, followed by the Class II and Class III malocclusion groups. No significant difference was observed in the MAI values between the Class I and Class II malocclusion groups (p > 0.05), whereas a significant difference was observed between the Class I and Class III malocclusion groups (p < 0.01) and between the Class II and Class III malocclusion groups (p < 0.05). A weak positive correlation was also observed between the MAI and occlusal contact area (p < 0.01, r2 = 0.13).
Conclusions: The results of this study indicated that masticatory efficiency was the highest in patients with Angle¡¯s Class I malocclusion, followed by those with Angle¡¯s Class II and Angle¡¯s Class III malocclusions. Moreover, a weak positive correlation was observed between masticatory efficiency and the occlusal contact area.
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KEYWORD
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Mastication, Efficiency, Angle's classification, Contact area
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