"Oral Smile" Breaks 1.9M Global Sales! New 10-Sec Habit for Interdental Care Shortages

Oak Lawn Marketing, the operator of Shop Japan, announced that its oral care product "Oral Smile" has surpassed 1.9 million units in cumulative global sales between August 2023 and March 2026. In conjunction with Caries Prevention Day on June 4, 2026, the company proposes a new oral care habit to address the lack of interdental care. Although many people brush their teeth daily, interdental dirt is often overlooked, leaving about 40% of dirt behind with only a toothbrush. This can lead to tooth loss, a decline in quality of life (QOL), and increased fall risks. Oral Smile's unique "H-shaped nozzle" uses a double cross jet water flow to wash teeth from the top, bottom, front, and back simultaneously. This allows the user to clean the entire mouth in about 10 seconds. The closed-mouth design minimizes water splashing, making it easier to use than conventional water flossers. Priced at 11,900 yen (tax included), this device turns interdental care into an easy, stress-free daily habit for all generations.