China Journal of Oral and Maxillofacial Surgery ›› 2023, Vol. 21 ›› Issue (1): 49-54.doi: 10.19438/j.cjoms.2023.01.008

• Original Articles • Previous Articles     Next Articles

Efficacy of decompression for large odontogenic maxillary sinus cysts

HU Ying-kai1, XU Guang-zhou1, MA Zhi-gui1, XIE Qian-yang1, ZHANG Yong-ya2, YANG Chi1   

  1. 1. Department of Oral Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology; Shanghai Research Institute of Stomatology. Shanghai 200011;
    2. Department of Radiology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine. Shanghai 200011, China
  • Received:2022-10-14 Revised:2022-11-03 Online:2023-01-20 Published:2023-06-12

Abstract: PURPOSE: To evaluate the effect of decompression for large odontogenic maxillary cysts, and to provide reference for clinical treatment. METHODS: The cases of large odontogenic maxillary cysts in the Department of Oral Surgery, Shanghai Jiao Tong University School of Medicine from January 2011 to December 2020 were reviewed. The patients were treated with decompression and secondary curettage. The patients were divided into non-negative pressure drainage group and negative pressure drainage group according to the type of cyst plug used. Mimics was used to quantitatively measure the change of cyst volume. New bone remodeling and maxillary sinus inflammation were evaluated. The volume change of the cysts was compared by paired t test. The therapeutic effects of different cyst plugs were compared by group t test and chi-square test with SPSS 17.0 software package. RESULTS: A total of 20 patients were included in the study. Ten patients were treated with non-negative pressure drainage and 10 with negative pressure drainage respectively. The volume of the lesions before decompression was (25 993.81±13 611.78) mm3,and significantly reduced to (5 386.30±3 546.30) mm3 after surgery(P<0.001), with a reduction rate of (77.54±13.01)%. The reduction rate of 11 patients was more than 80%, 9 patients between 50% and 80%. The volume reduction rate of non-negative pressure suction group was (72.75±14.16)%, with a superiority rate of 40%. The volume reduction rate of the negative pressure suction group was (82.33±10.29)%, and the superiority rate was 70%, but there was no significant difference between the two groups. Two cases of keratocyst recurred after secondary curettage, and 16 patients had new bone formation in sinus wall after decompression. CONCLUSIONS: Decompression is effective for large maxillary sinus odontogenic cystic lesions, and it can protect important anatomical tissues, which is recommended to be the first treatment for such diseases.

Key words: Maxillary sinus, Odontogenic cyst, Decompression

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