[Orthodontic diagnosis and treatment of unilateral posterior cross-bite].
OBJECTIVE
The aim of this study is to investigate the clinical diagnosis and treatment of unilateral posterior cross-bite and to provide information for correct treatment of this disease.


METHODS
The X-ray examination of patients' heads in the posterior-anterior position, analysis of pantomorphic films and model measurement were used for the diagnosis of unilateral cross-bite. According to these data, three types of unilateral posterior cross-bite would be classified, and different orthodontic appliances would be applied in the following treatment, including separate plate removable expansion appliances, Quad-helix appliances, narrowing dental arch and inter-arch elastics.


RESULTS
A total of 78 cases of unilateral posterior cross-bite were treated by different techniques in a manner consistent with the classification. All of the clinical results of treatment were satisfactory and successful.


CONCLUSIONS
If diagnosis is correct, and suitable treatment methods are chosen, unilateral cross-bite can be treated successful.
Duan
Y
Y
Qindu Stomatological College, Fourth Military Medical University.
Sun
Y
Y
Wang
F
F
Zhang
Y
Y
D000202:Activator Appliances; D000293:Adolescent; D000328:Adult; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D008310:Malocclusion / Q000175:diagnosis / Q000628:therapy*; D010155:Palatal Expansion Technique / Q000295:instrumentation*