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Flu season, dry mouth increases risk of infection! The number of dentures made exclusively for sleeping without teeth and dry mouth has tripled!

株式会社お守り入れ歯

With the influenza pandemic sweeping the nation, the number of people suffering from dry mouth usually increases during this season of dry air. (Head office: Sapporo, Hokkaido; Representative Director: Akira Ikeda), which operates a dental laboratory, is receiving an increasing number of orders for denture-shaped mouthpieces exclusively for sleeping because denture users experience dry mouth while sleeping.


Japan's first denture-shaped mouthpiece for sleeping "Oyasumi Dentures


Saliva is an invisible mask.

Dry mouth increases during the season of dry air. Dry mouth is a condition in which the amount of saliva secretion is reduced and the mouth becomes dry and thirsty. Saliva is also known as the "invisible mask" because it helps to control viruses and bacteria, and it also works to prevent infection as well as gum disease and tooth decay. This year, the influenza pandemic broke out two months earlier than usual and is raging across the country, causing school closings and class closings one after another. The decrease in saliva decreases immunity and makes people more susceptible to influenza, so it is important to be careful as we enter the winter season.



In the dry season, be careful of dry mouth while sleeping.

The number of orders for "good-night dentures," which are specially designed for sleeping because of dry mouth while sleeping, has been increasing. Good night dentures are denture-shaped mouthpieces made of soft material. The reason why people tend to have dry mouth when they sleep without dentures is related to the fact that the opening and closing of the lips is linked to the mesh of the teeth. Since the muscles inside the lips open and close in conjunction with the teeth, the absence of teeth makes it difficult to close the lips and keep them open, and also makes it difficult to swallow spit.


The bedroom also becomes drier, making it easier to feel thirsty, especially at bedtime. Sleeping with teeth in place reduces the risk of infection, as bacteria can enter through a dry, sore throat. In our recent survey on denture cleaning and bedtime use, the fifth most common reason for sleeping with dentures was that they leave the mouth open and dry the inside of the mouth.



The denture-shaped mouthpiece for sleeping was created based on the feedback from users.

In 2021, we began producing spare dentures with the exact same shape made with a 3D printer. Many users used to use them at bedtime, but some said they clenched their teeth unconsciously and had a lazy jaw the next morning. We thought it would be better if the dentures were soft enough to be used exclusively for sleeping, since they are not used for eating. We started trial production by applying the technology of denture-shaped mouthpieces for marine sports, which were under development. With the cooperation of eight monitors, we completed the prototype after about 50 iterations, adjusting the thickness in 0.5 mm increments. Since it is finished in exactly the same shape as the dentures in use, there is no sense of discomfort, and it is usually completed in about one week or two to three days at the earliest.


Representative's voice: "More and more people are suffering from the Corona disaster and their immunity is weakening. Therefore, although the coronas have calmed down, we need to pay attention to infectious diseases such as influenza. When saliva is reduced due to dry mouth, in addition to a decrease in antibacterial activity, food becomes harder to swallow, which can lead to aspiration pneumonia in the elderly as their mouth muscles deteriorate. At bedtime when they are unprotected, we want them to get through the harsh winter months in good health by changing their dentures like pajamas for a comfortable night's sleep." The service is available at affiliated dental clinics nationwide, and there are currently 18 locations from Hokkaido to Okinawa Prefecture.


Good Night Dentures: https://pro.form-mailer.jp/lp/fec0b34e231881



Goodnight Dentures: Service Overview

Description: After cleaning and sterilizing existing dentures, a 3D scanner is used to read the shape of the dentures and send the data to the cloud.

        After cleaning and sterilizing the existing dentures, a 3D scanner is used to read the shape and store the data in the cloud.

        Reproduction by 3D printer, and hollow processing

Time required: Normally about 1 week. (In case of urgency, we can finish in 2-3 days or the next day.

Price : Normal processing 10,450 yen, 16,500 yen for marine sports

        (Shipping costs are to be borne by the customer.)

Reservations: 011-596-8814 (weekdays from 9:00 to 18:00)

How to make an appointment: After making an appointment by phone, you can either come to our affiliated dental clinic or make an appointment online by phone.

        Online medical care is provided. A special packing kit will be mailed to you,

        Pack the package and contact the designated courier company to request pickup.

        If you are already using data storage at one of our affiliated branches

        If you are already using data storage at our affiliated branch, you can have your denture made by phone only.

Name of laboratory: Digital Denture Lab.

Affiliated dental clinics: 18 branches (Hokkaido, Akita, Tokyo, Chiba, Saitama, Kanagawa, Fukui, Shizuoka, and Shizuoka Prefectures,

        Kanagawa, Fukui, Shizuoka, Kyoto, Hyogo, Kagawa, Nagasaki, and Okinawa Prefectures,

        Kagawa, Nagasaki, Okinawa)



Company Profile

Company name: Omamori Dentures Co.

Representative Director: Akira Ikeda

Business : Denture banking, denture manufacturing, denture cleaning, antibacterial treatment

Location : Tomii Building No.37 5F, 3-12-2 Minami 2-jo Nishi, Chuo-ku, Sapporo, Hokkaido 060-0062, Japan

Telephone number : 011-596-8814 (Office hours: 9:00-18:00 weekdays)

Business hours : Weekdays 9:00-18:00 (Closed on Saturdays, Sundays, and national holidays)

URL : https://omamoriireba.com/