Miniscrew-assisted Maxillary Expansion for Treatment of Maxillary Transverse Deficiency: A Case Report

doi:10.13701/j.cnki.kqyxyj.2026.09.016

Abstract

Abstract: This case report systematically describes the diagnosis and treatment of a late-adolescent patient with skeletal Class Ⅲ malocclusion and maxillary transverse deficiency who had previously experienced unsuccessful treatment at another institution. Following a comprehensive evaluation of the patient's dentofacial condition, a treatment strategy combining miniscrew-assisted maxillary expansion with a preadjusted edgewise appliance was adopted. After two weeks of miniscrew-assisted maxillary expansion, both the transverse and anteroposterior deficiencies of the midface were markedly improved. Subsequent treatment with a preadjusted edgewise appliance further corrected the dental discrepancies, ultimately achieving a treatment outcome characterized by satisfactory function, health, esthetics, and stability.

Key words: Angle class Ⅲ malocclusion, skeletal class Ⅲ malocclusion, miniscrew-assisted rapid maxillary expansion

JIAN Ming, LIN Wenyi, TANG Yujing, JIAO Yuanyuan, LIU Zhijian. Miniscrew-assisted Maxillary Expansion for Treatment of Maxillary Transverse Deficiency: A Case Report[J]. Journal of Oral Science Research, 2026, 42(9): 816-822.

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