Abstract

Objective: To observe the dynamic characteristics of the odontogenic mandibular cyst after decompression and analyze the treatment rules.

Methods: Data of patients with odontogenic cyst of mandible confirmed in our hospital from June 2017 to June 2019 who underwent decompression were collected, using retrospective analysis, according to the CBCT taken before and after the operation, through the E3D modeling software three-dimensional reconstruction, analyze the contraction speed of the cyst cavity and its relationship with age.

Results: The contraction rate of cystic cavity from small to large is as following: the odontogenic keratocysts, the apical cyst, the dentigerous cyst. The contraction speed is negatively correlated with age.

Conclusion: The effect of fenestration decompression in the treatment of mandibular odontogenic cysts is related to time. It is recommended to deal with it in a timely manner according to the characteristics of the cyst changes.

Keywords: Odontogenic Cysts; Cone Beam Computed Tomography (CBCT); Decompression; E3D

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