Cyst Plugs for Drainage in Marsupialized Cysts of Jaws

Abstract Objective: Various treatment methods for odontogenic cysts of the jaws have been reported. Marsupialization shows lower morbidity compared to enucleation regarding the preservation of important anatomical structures (vitality of adjacent teeth and the inferior alveolar nerve). It is necessary to use a cyst plug for drainage in marsupialized cysts for successful treatment.This paper is to introduce the design and making of two types of cyst plugs for marsupialized odontogenic cysts. Methods: The clasp retained cyst plugs were classified into two types: conventional and denture-like type according to their different function. Drainage opening was designed on the occlusal surface or center of coventional cyst plug, and located in its lingual (palatal) base plate of the dnture-like type. Steps and procedures for designing and making cyst plugs were described respectively. Results: Cyst plugs were used for 32 lesions in molar regions, 7 in premolar and 4 in anterior regions. There were 38 conventional and 5 denture-like types, which kept cyst opening unobstructed in all patients. A secondary enuleation of the reduced cyst following marsupialization was performed in 29 cases without complications: nerve damage, perforation of the sinus and pathological fracture. Three patients was still receiving regular follow-up for marsupialied cysts.Conclusion: The clasp retained cyst plug is a better drainage device for marsupialized jaw cysts in preventing food accumulation or closure of cyst opening. Denture-like type can temporarily replace the tooth lost post-operatively, with good functional and esthetic results.