Relationship between Mandibular Anterior Crowding and Dental Arch and Base Bone in the Mixed Dentition

doi:10.13701/j.cnki.kqyxyj.2019.11.012

Abstract

Abstract: Objective: To compare and analyze the relationship between mandibular anterior crowding in the mixed dentition and the dental arch and the base bone. Methods: Mandibular dental casts of 139 children in the early mixed dentition were divided into two groups according to the severity of mandibular anterior crowding. The total arch length, dental arch length and width, and basal bone arch length and width were compared between the crowded group (71) and noncrowded group (68), and the correlations with crowding were investigated. Results: Males in the normal group were significantly larger than females. In the crowded group, except for the length of the arch and the posterior segment of the basal bone arch, the other indicators were smaller than the normal group; the total arch length, the first dental arch length, the first and second dental arch width, the first basal bone arch length, and the second and third basal bone arch width in males group were significantly larger in normal group. Significant inverse correlations were found between crowding and the length of first dental arch and first basal bone arch. It also had significant inverse correlations between crowding and the width of second basal bone arch in female group. Conclusion: The crowded dentition has a close relationship with the dental arch and basal bone arch.

Key words: mixed dentition, crowded, dental arch, basal bone arch

SHENG Li, LI Tao, ORKEN·Kamenbek, YUAN Xiaojuan, LIU Yishan. Relationship between Mandibular Anterior Crowding and Dental Arch and Base Bone in the Mixed Dentition[J]. Journal of Oral Science Research, 2019, 35(11): 1057-1061.

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