Abstract: Objective To investigate the application value of cyst plugs in the marsupialization of jaw bone cysts.Methods Subjects were 122 patients with gigantic bone cysts of the jaws and cysts in the mixed dentition since 2008,among whom one patient was with multiple cysts.All patients underwent the marsupialization,and then 125 pieces of cyst plugs were made.Results Cyst cavities of 100 patients were closed in 1-2 years,including 23 children of 9-12 years old.22 patients had a second operation because one small cyst cavity was left after the surgery,but no cysts recurred during 2 years′ follow-up.The healing time in the mandible was shorter than that of the maxilla.Normal eruption of permanent teeth was observed for patients with mixed dentition,and the swelling face returned to normal.Conclusions Cyst plugs can prevent food from flowing into cyst cavities,and guarantee the drainage of cyst fluid.

Key words: jaw-bone cyst, cyst plug, marsupialization