Compared with root extraction the direct restoration and the crown lengthening by surgical procedure the forced eruption is a simple economical and practical method in clinical .

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Methods : Nine cases of dentigerous cysts with impacted teeth were treated with fixed appliances surgical exposure scrape of cyst and orthodontic traction to assist eruption of impacted teeth .

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An Analysis of the Post-Crown Restoration of Upper Central Incisor with Surgical Crown Lengthening and Forced Eruption by Three Dimensional Finite Element Method

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