Journal of the Korean Association of Oral and Maxillofacial Surgeons

The Korean Association of Oral and Maxillofacial Surgeons (대한구강악안면외과학회)
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Three-dimensional analysis of decompression efficacy and influencing factors in the maxillofacial cystic lesions: a retrospective study

  • Heon-Young Kim (Department of Oral and Maxillofacial Surgery, Ewha Womans University Mokdong Hospital) ;
  • Sung Min Lee (Department of Oral and Maxillofacial Surgery, Ewha Womans University Mokdong Hospital) ;
  • Jung-Hyun Park (Department of Oral and Maxillofacial Surgery, Ewha Womans University Mokdong Hospital) ;
  • Sun-Jong Kim (Department of Oral and Maxillofacial Surgery, Ewha Womans University Seoul Hospital)
  • Received : 2024.05.14
  • Accepted : 2024.06.26
  • Published : 2024.08.31
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Abstract

Objectives: To evaluate the effectiveness of decompression and various parameters that may affect volume change in cystic lesions. Patients and Methods: This retrospective study included patients who visited the Department of Oral and Maxillofacial Surgery at Ewha Womans University Medical Center between 2012 and 2022 for decompression of cystic lesions of the jaw. To measure volume changes, pre- and post-decompression cone-beam computed tomography was performed and reconstructed in three dimensions using Mimics 25.0 software (Materialise NV). A comparative analysis was performed based on sex, age, initial cyst volume, location, degree of cortical layer expansion, and pathologic diagnosis using the Mann-Whitney U and Kruskal-Wallis tests. Results: In all 20 cases, the duration of decompression was 7.84±3.35 months, and all patients successfully completed the decompression period without any complications. Significant differences were observed in the reduction rate and shrinkage speed based on the degree of cortical layer expansion. However, only the shrinkage speed (not the reduction rate) showed a significant difference with respect to the initial cyst volume. Significant differences were not observed based on sex, age, location, or pathologic diagnosis. Conclusion: Although the present study involved a small number of cases, the effectiveness of decompression was confirmed. In particular, 3D analysis overcame the shortcomings of previous studies of decompression and allowed earlier resection. Further studies with more patients are required to provide a rationale for these results and identify factors that influence decompression.

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References

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