Bilateral submandibular sialolithiais: Report of two cases.

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We recently experienced two cases of relatively rare bilateral submandibular sialolithiasis, which are describe in ditail in this paper.<BR>Case No.1 was a 26-year-old male having a swollen submandibular region of the left only X-ray films showed a presence of salivary stone not only in the left but also in the submandibular. Both stones could be surgically removed from the oral cavity.<BR>Case No.2, a 20-year-old female, attended our department with a chief complant of diffuse swelling of the left submandibular. Symptoms appeared only in the left side but subsequent X-ray films showed a presence of salivary stone in both sides. However, neither of stones could be removed surgically.<BR>The structures of both right and left salivary stones were observed in the former case using a scanning electron microscopy.<BR>Both right and left stones were consisted of three layers (center core, laminated structure outer layer), showing a remarkable difference in the center core and outer layer between two stones.