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Modifications of Rect-Spring to Enhance the Engagement of Ectopically Entrapped Molars with 2 Case Reports

Authors
 Min Sun Song  ;  Chung-Min Kang  ;  Je Seon Song  ;  Hyung-Jun Choi  ;  Jaeho Lee  ;  Seong-Oh Kim 
Citation
 CHILDREN-BASEL, Vol.8(9) : 823, 2021-09 
Journal Title
CHILDREN-BASEL
Issue Date
2021-09
Keywords
distalization ; ectopic eruption ; first molar ; obtuse angle ; tilted molar
Abstract
The Rect-spring appliance, used for the management of ectopically erupting molars, shows weak retention on mesially tilted molars. We present three modifications of the appliance for better engagement and their advantages. We describe cases of two 7-year-old patients with ectopically erupting maxillary first molars with a 2.2 mm and 2.5 mm depth of entrapment, respectively. The modified Rect-spring (mRS) was inserted between the ectopically erupting first molar and adjacent primary second molar, and exerted a distalization force with an interproximal wedging effect at the same time. After 3 months, the ectopically erupting first molars were successfully brought into proper occlusion. No discomfort was reported. The mRS is suitable for various locking cases except for severely tilted molars without requiring any laboratory procedures. We suggest it as the first choice for unlocking the first molars.
Files in This Item:
T202104701.pdf Download
DOI
10.3390/children8090823
Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Pediatric Dentistry (소아치과학교실) > 1. Journal Papers
Yonsei Authors
Kang, Chung Min(강정민) ORCID logo https://orcid.org/0000-0001-7813-3741
Kim, Seong Oh(김성오) ORCID logo https://orcid.org/0000-0002-8620-1377
Song, Je Seon(송제선) ORCID logo https://orcid.org/0000-0001-8620-5629
Lee, Jae Ho(이제호) ORCID logo https://orcid.org/0000-0002-1556-3485
Choi, Hyung Jun(최형준) ORCID logo https://orcid.org/0000-0002-3315-6912
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/186821
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