Relationship between oral function and mandibular anterior crowding in early mixed dentition.
Relationship between oral function and mandibular anterior crowding in early mixed dentition.
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DOI：
10.1002/cre2.306
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发表时间：
2020-10
影响因子：
1.8
通讯作者：
Maki K
中科院分区：
文献类型：
--
作者：
Ohno Y;Fujita Y;Ohno K;Maki K
牙列的位置被认为是由口周肌肉和舌头施加的力的组合决定的。我们推测下颌前部拥挤可能与口腔功能发育异常有关。目的探讨替牙早期下颌前牙拥挤与口腔功能的关系。共61名儿童（30名男孩，31名女孩）与早期混合牙列被纳入这项研究。测量了所有参与者的身高、体重、最大咬合力、嘴唇闭合强度和最大舌压，并对他们的牙模和侧位头颅X线片进行了评价。利特尔不规则指数（LII），评价牙模，被用来作为一个指标的下颌前部拥挤。最大咬合力和唇闭合强度与LII无显著相关性，尽管它们与最大舌压、下颌尖牙间周长距离和上中切牙（U1）-NL角呈正相关（p <0.05）。最大舌压与LII呈负相关（p <0.05）。最大舌压和LII与下颌尖牙间周长和U1/NL角显著正相关，与切内角呈负相关（所有p <0.05）。下颌前牙拥挤与舌压力功能直接相关，与最大咬合力和闭合力间接相关。
The position of the dentition is considered to be determined by a combination of forces exerted by the perioral muscles and tongue. We hypothesized that mandibular anterior crowding may be related to abnormalities in the development of oral function. To determine the relationship between oral function and mandibular anterior crowding in early mixed dentition. A total of 61 children (30 boys, 31 girls) with early mixed dentition were included in this study. Height, body weight, maximum occlusal force, lip‐closing strength, and maximum tongue pressure were measured in all participants, and their dental casts and lateral cephalograms were evaluated. Little's irregularity index (LII), evaluated by dental casts, was used as an indicator of mandibular anterior crowding. Maximum occlusal force and lip‐closing strength were not significantly correlated with the LII, although they were positively correlated with maximum tongue pressure, mandibular intercanine perimeter distance, and upper central incisor (U1)‐to‐NL angle (p < .05). Maximum tongue pressure was negatively correlated with LII (p < .05). Maximum tongue pressure and LII were significantly positively correlated with the mandibular intercanine perimeter distance and U1/NL angle, and negatively correlated with the interincisal angle (p < .05 for all). Crowding of the mandibular anterior teeth was directly correlated with tongue pressure function and indirectly correlated with maximum occlusal force and lip‐closing strength.