Eruption Cyst: Distribution and Prognosis

Background: eruption cyst is defined as a benign developmental soft tissue cyst associated with an erupting primary or permanent tooth. The cyst which occurs in mucosa, is lined by stratified squamous nonkeratinized epithelium, and filled with fluid or blood (so they are sometimes called eruption hematoma). It appears clinically as soft compressible dome-shaped translucent pinkish or bluish gingival swelling overlying the crown of an erupting tooth. Eruption cyst can?t be seen on radiograph due to lack of bony involvement. It usually left to disappear by itself, but sometimes needs intervention when causing complications like infection, bleeding or pain. Aim: To evaluate the distribution of eruption cysts within the dentition and according to gender, beside evaluating the prognosis and the need for intervention. Material and methods: 200 patients visiting pediatric dental clinic in Prince Rashid Hospital in the North of Jordan were diagnosed to have eruption cysts. Some of these cases were discovered by routine checkup, but the other patients came complaining of the lesion. The diagnosis was carried out by a specialized pediatric dentist. The cases were followed up three monthly for nine months until spontaneous rupture, occurrence of complications, or surgical removal otherwise. Results: of the 200 patients, 176 patients committed the follow up. 168 patients had their cysts ruptured spontaneously during the follow up period. 8 cases needed intervention. Conclusion: the majority of eruption cysts resolve spontaneously, some may need intervention, so close monitoring and follow up are required.