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THE CHANGES OF HORIZONTAL DISTANCE CONDYLE TO NASAL SEPTUM AFTER THE TWIN BLOCK TREATMENT ON CLASS II DIVISION 1 WITH RETROGNATHIC MANDIBLE

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Orthodontic treatment of Class II division 1 malocclusion using Twin-block functional appliances during growing period will increase the height of mandible, and mandible base length due to growth of condyle. The aim of this study is to investigate the changes of horizontal distance from condyle to nasal septum after the Twin-block treatment on Class II division 1 with retrognathic mandible.
This study was an observational analytical research. There were total 5 samples of panoramic radiograph before Twin-block treatment and 5 samples of panoramic radiograph after Twin-block treatment. The panoramic radiographs were traced to identify the changes of horizontal distance from condyle to nasal septum after the Twin-block treatment. The distance from the middle of nasal septum to the most superior surface of condyle head for right region and left region were measured. The difference of distance from the middle of nasal septum to the most superior surface of condyle head for before and after the treatment were analyzed statistically.
The result of this study showed the horizontal distance from the middle of nasal septum to the most superior surface of condyle head after the Twin-block treatment increased. The difference was slight (p-value > 0.05), which means no significant changes of condyle position before and after the treatment of Twin-block.
This study concludes that there is no significant difference in horizontal distance from the most superior surface of condyle head to the middle of nasal septum before and after treatment of Twin-block.

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Series Title

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Call Number

617.64 Xin C

Publisher

: FKG Unpad., 2016

Collation

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Language

English

ISBN/ISSN

160110123009

Classification

Ortodonsia

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