To investigate the relationship between capsule irrigation and curative effect after marsupialization for cystic lesions of jaw.

Among the patients admitted to oral and maxillofacial surgery in the Fifth Affiliated Hospital of Sun Yat-sen University from June 2013 to June 2021, 41 patients with giant jaw cystic lesions (28 males and 13 females) were selected. The patients were aged from 6 to 67 years old, with an average of 27.5 years. According to the size, location and depth of jaw cystic lesions, the methods of postoperative capsule irrigation were divided into pulse group (26 cases) and pump pressure group (15 cases) . According to patient compliance, the patients were divided into two groups: Group A (18 cases) , cystic flushing <2 times/d; Group B (23 cases) , cystic flushing ≥3 times/d. The full jaw surface tomography was taken every 2 months to compare the reduction of cyst between the two groups. The evaluation criteria were set as follows: the reduction rate of cyst volume ≥50%: effective; the reduction rate of cyst volume <50%: improved; the cyst had no change or enlargement: recurrence. The curative effects of the two groups on the way of capsule irrigation and the times of irrigation every day were statistically analyzed by using SPSS 13. 0 with χ² test.

Among the 41 patients, the efficiency of postoperative cyst reduction in the pulse group (26 cases) was 53.8%, of which 3 cases had increased volume of cysts after marsupialization due to the depth, irregularity and poor cystic septal opening. The pump pressure group (15 cases) had an effective rate of postoperative cyst reduction of 60.0%, and there was no significant difference in the efficiency of cyst volume reduction between the two groups (χ² = 1.876, P>0.05) . Group A (18 cases) had an effective rate of postoperative cyst volume reduction of 38.9%, whereas the rate for group B (23 cases) was 69.6%, and the difference in the efficiency of cyst volume reduction in the two groups was statistically significant (χ² = 3.864, P<0.05) .

There was no effect of flushing methods on the clinical efficacy of capsule irrigation on the marsupialization of cystoid disease of the jaw. Capsule irrigation with ≥3 times/d significantly improved its efficacy on the marsupialization of cystoid disease of the jaw.