Strategic orthodontic treatment for multiple mesioangular impacted molars: a case report

doi:10.7518/hxkq.2025.2025321

Abstract

Abstract:

Tooth impaction is a prevalent dentofacial developmental anomaly, mostly observed in third molars, whereas second molar impaction occurs with lower frequency. This article presents a case of a male adolescent with mesially impacted second molars resulting in the external root resorption of multiple first molars. The patient received orthodontic and surgical treatments simultaneously, achieving dental alignment and enhanced occlusal function. The treatments mitigated the long-term adverse complications of external root resorption.

Key words: molar impaction, external root resorption, orthodontic traction

CLC Number:

R783.5

Zhan Jiaqi, Zhang Jiaqi, Fan Wenjie, Fu Hanni, He Xianzhe, Hu Li. Strategic orthodontic treatment for multiple mesioangular impacted molars: a case report[J]. West China Journal of Stomatology, 2026, 44(1): 65-71.

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测量项目	正常值	术前	术后
骨性
SNA/°	82.8±4.0	77.2	80.9
SNB/°	80.1±3.9	75.9	81.6
ANB/°	2.7±2.0	1.3	-0.7
MP-SN/°	32.5±5.2	37.1	31.6
MP-FH/°	27.3±6.1	23.6	22.1
牙性
U1-NA/mm	5.1±2.4	4.9	6.2
L1-NB/mm	6.7±2.1	4.4	3.5
U1-SN/°	105.7±6.3	108.3	108.8
L1-MP/°	92.6±7.0	92.7	87.1
软组织
UL-EP/mm	1.0±2.0	-1.2	-2.5
LL-EP/mm	2.0±2.0	1.6	0.1