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Combined distalization and lingual cortex remodeling during mandibular growth for facial profile improvement: a case report

Authors
 Hai-Van Giap  ;  Ji Yoon Jeon  ;  Joo-Hee Chun  ;  Kee-Joon Lee 
Citation
 ANGLE ORTHODONTIST, Vol.94(3) : 353-365, 2024-04 
Journal Title
ANGLE ORTHODONTIST
ISSN
 0003-3219 
Issue Date
2024-04
MeSH
Adolescent ; Cephalometry ; Child ; Female ; Humans ; Incisor ; Malocclusion, Angle Class II* / therapy ; Mandible / diagnostic imaging ; Maxilla ; Orthodontic Anchorage Procedures* ; Tooth Movement Techniques
Keywords
Bone remodeling ; Mandibular posterior lingual cortical plate ; Simultaneous total arch distalization and intrusion
Abstract
Borderline crowding poses a challenge in deciding whether or not to prescribe premolar extraction. This case report describes the two-phase nonextraction orthodontic treatment of an 11-year-old girl with a hyperdivergent skeletal Class I pattern exhibiting anterior crowding and moderate lip protrusion. The initial phase of treatment included maxillary and mandibular expansion to correct the transverse discrepancy as an early intervention. Subsequently, comprehensive treatment was initiated at the age of 13 years, with fully erupted permanent second molars and growth potential remaining. Phase II treatment involved a second round of maxillary expansion, followed by simultaneous bimaxillary total arch intrusive distalization, using interradicular, temporary skeletal anchorage devices to correct dental crowding and improve the facial profile. Although the limited retromolar space posed a challenge to mandibular tooth distalization, gradual bone remodeling was observed in the lingual cortex of the mandibular body, enabling sufficient orthodontic tooth movement without noticeable side effects. After 4 years 3 months of treatment, her dental crowding was relieved, with significant improvement in the facial profile and proper occlusion. The treatment outcomes remained stable 2 years 4 months after retention.
Files in This Item:
T202402999.pdf Download
DOI
10.2319/060123-390.1
Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Orthodontics (교정과학교실) > 1. Journal Papers
Yonsei Authors
Lee, Kee Joon(이기준) ORCID logo https://orcid.org/0000-0002-0782-3128
Jeon, Ji Yoon(전지윤)
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/199264
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