KR20000047321A - Toothbrush having arched flexible block head - Google Patents

Abstract

PURPOSE: A toothbrush having a flexible block head in an arch shape is provided, which varies the shape of brush under pressure of its application to adapt to the shape of tooth. CONSTITUTION: A toothbrush comprises: a flexible block head in an arch shape made of low hardness rubber, EPDM(Ethylene Propylene Diene Monomer) rubber or silicon; the bristle tufts made of PBT(Poly Butylene Terephtalate), EPDM rubber, or silicon rubber; and a toothbrush holder made of PP(Poly Propylene), PETG(Poly Etylene Terephtalate), AS(acrylo nitrilstylene), CP(Cellulose Propionate), and ABS(acrylonitrile butadiene styrene).

Description

Arched, flexible toothbrush head toothbrush

In the present invention, the head of the toothbrush is in the form of an arch similar to the teeth (Fig. 1), and the toothbrush head is flexible so that the toothbrush is designed to be deformed in the form of teeth according to the pressure applied during brushing. Therefore, the toothbrush has a toothbrush head that has the flexibility to wipe the teeth more effectively by changing the toothbrush head according to the form of the teeth when the force applied to the desired tooth part when brushing.

Conventional toothbrush heads are generally straight, and most of the plastic is made of toothbrush rods. Toothbrushes are brushed with a straight toothbrush that does not deform or bend under pressure. I use it. However, teeth and dentitions are in the form of arches and in the form of straight toothbrushes, there is a limit to clean the teeth in the form of arches when brushing. Therefore, recently, in order to overcome this limitation, the short hair form of the part where the bristles are planted is removed from the conventional straight short hair form, and the front hair form of the bristles such as the high front and the low back form or the reverse front and the high back form or the uneven shape is opposite. It has been developed and marketed, but it has been developed and marketed, but it has an arch-type toothbrush head. Toothbrushes that have a toothbrush head that flexibly deforms to the teeth according to the pressure applied to the toothbrush when brushing teeth have not been invented yet.

The toothbrush of the present invention relates to a toothbrush having a flexible toothbrush head that can be used to brush teeth more effectively when brushing the toothbrush when the toothbrush head is applied to the desired tooth portion and is flexibly flexed according to the dental form. Made from low hardness rubber and EPDM rubber (Ethylene Propylene Diene Monomer) or silicone rubber, which can be measured by shoreA or shoreD, the toothbrush head has a brushed head and the planted shape is arched when viewed from the front. I can include irregularities. In addition, if no force is applied, the original arch form is quickly restored.

Toothbrush heads are arch-shaped, as shown in (Figure 1), and are suitable for dentition, so that the plaque removal rate is higher than that of ordinary toothbrushes. In addition, the tooth of the person is different in the size of the teeth and teeth and molar teeth to compensate for the toothbrush of the present invention (Fig. 2) by pressing the part of the toothbrush head has the feature that the shape is easily deformed to fit the teeth or teeth It is a toothbrush that has a feature that allows you to clean your plaque more easily and effectively.

As the bristle used in the toothbrush, conventional nylon bristles or PBT bristles may be used, and silicone bristles or rubber bristles may be used for gum massage. In addition, the shape of the toothbrush is planted can be made in various forms such as arch form and arch arch form from the front.

1 is a front view of a toothbrush according to the present invention

2 is a front detail view of a toothbrush head according to the present invention;

<Explanation of symbols for main parts of drawing>

1: toothbrush head

2: toothbrush hook

3: arch form short hair form

4: brush head

5: toothbrush

The toothbrush of the present invention is a toothbrush having a flexible arched toothbrush head, the flexible arched toothbrush head is applied to the desired tooth portion by applying a force to the toothbrush head and bent according to the dental form to wipe the teeth more effectively. As a material used to give the toothbrush head flexibility, low hardness rubber, EPDM rubber (EPDM: Ethylene Propylene Diene Monomer) or silicone rubber, which can be measured by shoreA or shoreD, can be applied to the toothbrush head. It gives flexibility to bend, and the toothbrush short hair form after brushing the bristles is also arched and uneven, which makes it easier to dig more easily between the teeth and the teeth where the plaque is most attached to remove the plaque. It is designed to be. The bristles used for the bristles were nylon bristle and PBT (polybutylene terephthalate) bristle, and the bristles of low hardness EPDM rubber and silicone rubber in the form of bristle were used to increase the gum massage effect. The toothbrush can be rotated 360 degrees (Fig. 2) so that the toothbrush can be rotated freely by the customer when brushing in the mouth. Toothbrushes are made of commonly used plastics such as PP (polypropylene), PETG (polyethylene terephthalate), AS (acrylonitrile styrene), CP (cellulose propionate), ABS (acrylonitrile butadiene) Styrene) and the like.

The toothbrush made by the present invention was clinically evaluated to evaluate the flexibility of the toothbrush head and the effect of plaque removal by brushing.

[Examples 1 to 3 and Comparative Example 1]

To design the toothbrush head as shown in Table 1 below, to produce a mold, and to produce a toothbrush head and a toothbrush with a double injection technology, the toothbrush head is planted in the toothbrush head using nylon hair, PBT hair, and rubber brush head to the experimental toothbrush It was made as an experimental example and the comparative example was carried out using a general toothbrush.

● Table 1

division Example 1 Example 2 Example 3 Comparative Example 1 Head type Arch Arch Arch Straight Brush head type Nylon hair PBT hat Rubber brush head Nylon hair Toothbrush Head Material Rubber Rubber Rubber PP

Example 1: Toothbrush Flexibility Experiment

The flexibility test of the toothbrush head in the general toothbrush used in Examples 1 to 3 and Comparative Examples was evaluated by the following evaluation method.

After cutting the toothbrush heads of the experimental and comparative examples, the toothbrush head fixing frame was fabricated, so that the back side of the toothbrush head (the opposite side where the bristles were planted) was facing each other and fixed, and the toothbrush head was pressed with a force of 0.5 kg using a tensile strength tester. The degree of flexibility of the toothbrush head was measured and evaluated as the length increased. The results are shown in Table 2.

● Table 2

division Example 1 Example 2 Example 3 Comparative Example 1 Extended length (mm) 11.7 mm 11.4 mm 11.5 mm 2 mm

● The greater the length, the more flexible

As shown in the results of Table 2, it was confirmed that the toothbrush head is much more flexible than the comparative example in the case of the comparative example. Could know.

Experimental Example 2: Simple clinical trial of plaque removal rate

After recruiting the study investigators and dividing them into 4 groups of 15 people per group, the prag index of the entire tooth was measured and recorded well in all the experimenters before brushing, and the wells were recorded as the prag index before brushing. Giving and brushing teeth. After 1 hour of brushing, the plaque index of the entire tooth was evaluated again, and the plaque index after tooth brushing was compared with the plaque index before brushing. Comparative evaluation results for the plaque removal effect are shown in Table 3. The plaque evaluation index was assessed using the Turesky Quiegley and Hein Index with a scale of 0 to 5 points.

0 point: If there is no bacterial film (plaque)

1 point: If there is a bacterial film on the gingival edge

2 points | pieces: When there is a bacterial membrane in a linear line along the gingival margin

3 points: When there is a bacterial film on the tooth surface less than 1/3

4 points: If there is a bacterial film on the tooth surface more than 1/3

5 points: If there is a dental plaque on the surface of the cervix 2/3 or more

● Table 3

division Tooth brush index After brushing Plaque removal rate (%) Example 1 2.34 ± 0.11 0.61 ± 0.03 73.93 Example 2 2.32 ± .0.14 0.72 ± 0.05 68.96 Example 3 2.37 ± 0.16 0.88 ± 0.07 62.86 Comparative Example 1 2.31 ± 0.17 1.12 ± 0.05 51.5

The result of evaluating the plaque removal rate of Table 3 shows that the plaque removal effect is excellent when brushing the teeth compared to the comparative example in the case of the example, which is applied to the force applied to the toothbrush head when the brush type of the arch of the embodiment is brushed. As a result, the arched toothbrush heads were opened to fit the teeth, thereby increasing the plaque removal effect.

As described above, the toothbrush of the arch-type flexible toothbrush head is a highly functional toothbrush having a plaque removal effect of 40% higher than that of the conventional toothbrush by deforming the toothbrush head according to the force applied during the brushing.

Claims (3)

A toothbrush with an toothbrush head that is arched and has a flexible toothbrush head that deforms easily when applied with force. The toothbrush of claim 1, wherein the material used to give the toothbrush head flexibility is low hardness rubber and EPDM rubber (EPDM) or silicone rubber which can be measured by shoreA or shoreD. The bristles of claim 1, wherein the bristles are used in the form of bristles such as EPDM rubber and silicone rubber of low hardness (from 5shoreA to 50shoreD) in order to increase the gum massage effect in addition to the general bristle nylon bristle and PBT (polybutylene terephthalate) bristle. Toothbrush using extruded brush heads.