JP-2026076083-A - toothbrush

Abstract

[Problem] To provide an interdental brush that can remove as much plaque as possible through self-control, makes the process easier, and is also useful in disaster situations. [Solution] The Mitsuya series toothbrushes have three arrows when viewed from above and a mountain-shaped section when viewed from the side. The smaller toothbrush version is further reinforced by creating a shaft in the center. The Mitsubishi Yama series has both the base and bristles pointing towards the central apex, with the bristles becoming longer and stronger towards the center. While all series basically have short, thin bristles, it is good to have variations in size, bristle stiffness, and length. [Selection Diagram] Figure 1

Inventors

• 鈴木 ヤス子

Assignees

• 鈴木 ヤス子

Dates

Publication Date

20260511

Application Date

20241023

Claims (4)

1. Toothbrushes with a design that looks like three arrows from above and a mountain shape from the side, etc. Also includes auxiliary tools and interdental brushes.
2. Alternatively, the shaft can be made slightly higher than the other bristles, allowing the surrounding pressure to support the center during use. See Figures 11 and 12 for examples.
3. Alternatively, it's a variation of the Mitsuya-sho (three-arrow small) style, but with one side of the arrow shortened. The shaft is optional. The way the handle is attached is not included.
4. Alternatively, the hairs are arranged towards the center, becoming longer towards the center.

Description

This invention relates to a toothbrush that fits the alignment of teeth and the shape of the gums. Current toothbrushes are flat and cannot reach between teeth, so they hardly clean periodontal pockets or the spaces between teeth. However, the toothbrush with a pointed, V-shaped tip that was released while I was developing it largely solved this problem. Furthermore, in recent years, toothpastes that contain fluoride and produce less foam have become mainstream, based on recommendations from dental associations. The reason given is that foam can give the false impression that brushing is done properly. Due to the way the bristles of interdental brushes spread out, they can only clean up to a certain point, beyond the area that floss can reach. Also, the bristles of end tuft brushes are currently predominantly circular, about 4 mm in diameter. This makes it difficult to insert them into periodontal pockets, especially the corners of the molars and interdental spaces. Recent research has highlighted the power of foam in toothpaste, as seen in programs like NHK's "Torisetsu" (Instruction Manual). The reason why it's often said that foam doesn't matter when it comes to brushing your teeth is that in the past, there wasn't a culture of brushing teeth thoroughly, and people who developed cavities were simply brushing carelessly, only spreading the foam around. My experiments showed that using a toothpaste with ultra-fine bristles that lathers well resulted in better removal than using a more expensive toothpaste that doesn't lather well. Furthermore, applying the principle of foaming to end tuft brushes also improves removal efficiency. Unfortunately, however, that thickness only allows it to reach shallow areas of pockets. Interdental brushes, floss, and end-tuft brushes—all of these tools are important. Each, including the toothbrush I recently developed, has its own advantages and disadvantages. Everyone's situation is different, and so are the circumstances at hand. I hope that when you're in need, you'll consider these tools as one of your options to find the most helpful one for your specific situation. Toothbrushes that were sold around 2017NHK's instruction manual for facial cleansingJaw models and CAD data Mitsuya 1 Overall pictureThree arrows 1 Diagram with the outer perimeter removedThree Arrows 1 Diagram showing three arrows and the central part remainingThree Arrows 1 Only the Three Arrows partThree arrows, 1. Base part only.Mitsuya 2 Surprise Overall PictureThree arrows 2 Surprise From aboveThree arrows 2 Surprise Side viewMitsuya Ko Overall pictureMitsuya (small): Base and central axisEnlarged view of the central area of Mitsuya Elementary SchoolA top-down view of the central axis of the small arrow.Mitsubishi Mountain (Overall View)Mitsubishi Mountain (side view)Mitsubishi Mountain (rear view)View of Mount Mitsubishi from aboveMitsubishi Mountain pattern, modified angle, base only.Mitsubishi Mountain pattern, angled version, rear view, base only.Mitsubishiyama Elementary School - Overall ViewView from above of Mount MitsubishiMitsubishi Yamako (base only) Preventing cervical caries. Of course, it also helps prevent periodontal disease. The further caries progresses towards the tooth root, the more difficult it becomes to treat and the more likely it is to cause tooth loss. Once caries develops, it becomes impossible to remove it through self-control brushing, and because the cervical area of the tooth is naturally constricted, it is difficult for dentists to detect and understand the problem, which can even lead to being told that you are brushing too hard. When plaque accumulates at the neck of the tooth, the area around the tooth root becomes acidic every time you eat something sweet, and because the self-cleaning mechanism is less effective, it remains acidic for a long time, leading to serious progression of dental caries. With current technology, once a pocket forms, it's virtually impossible to clean the affected area, including the pocket and interdental spaces. Many people simply can't afford weekly visits to the dentist for scaling and other treatments. Furthermore, if cervical caries isn't properly addressed, it can become painful and lead to serious complications. It would be wonderful if we could contribute to solving this problem by expanding the scope of self-control, even slightly. The fluoride in toothpaste is rinsed off after brushing anyway. I think rinsing thoroughly is better for whiter teeth. There was a dental hygienist who prided herself on only rinsing once with a small amount of water, based on the theory that cavities only form from plaque that has accumulated for several days, but her teeth looked like they were covered in plaque. It seems that the number of bacteria decreases when you rinse thoroughly. Fluoride is ineffective unless it stays in the mouth for at least 30 minutes. Therefore, I think it's more efficient and environmentally friendly to use fluoride-free too