[Removable appliance and closed of central incisors: report of 48 cases].
OBJECTIVE
To evaluate the treatment effect of orthodontic traction on embedded and inverted maxillary bending central incisors.


METHODS
Fifty-two embedded and inverted maxillary central incisors without-eruption ability in 48 cases were treated by combined orthodontic traction with surgical treatment after spiral CT positioning and expanding the space, the eruption situation, gingival-breaking time and teeth pulp vitality after treatment were recorded, and the treatment effect was evaluated.


RESULTS
Forty-eight cases with 52 impacted upper central incisors were treated with surgical  and closed orthodontic traction, successful results were achieved in 36 cases, accounting for 69.23%; 15 cases had improvement, accounting for 28.85%; 1 case failed, accounting for 1.9%. Pulp vitality tests were all normal and there was no root absorption and ankylosis.


CONCLUSIONS
Selecting appropriate cases, precise positioning with spiral CT, proper space expanding and rational application of removable traction appliance are the keys to successful treatment of impacted and inverted maxillary bending central incisors of children in mixed dentition.
Department of Pediatric Dentistry, Jinan Hospital of Stomatology, Jinan 250001, China. slq4808@163.com
Lin-qin
LQ
Shao
Li-xia
LX
Zhang
Ruo-zhen
RZ
Gong
Ying-wei
YW
Ma
D002648:Child; D003818:Dentition, Mixed; D006801:Humans; D007180:Incisor; D009967:Orthodontic Appliances; D014078:Tooth Eruption; D014095:Tooth, Impacted