First, read the English article below.

Plaque is practically invisible, so it can be very difficult to know how much is on your teeth. To overcome this, you can purchase "disclosing tablets" in the grocery or drugstore. Once chewed, these tablets will stain the plaque on your teeth bright red, making it easy for you to examine your teeth for plaque and identify the areas you need to target with a toothbrush. Green food coloring applied to your teeth with a q-tip will have the same effect, staining your teeth green for easy plaque identification. To effectively brush your teeth and ensure that you are getting rid of as much plaque as possible, it is important that you have the right tools. Although there are many fancy toothbrushes on the market, the American Dental Association states that any "soft nylon brush with rounded-end, polished bristles" will do the trick. Hard bristled toothbrushes can be too abrasive and wear away tooth enamel and hurt your gums. Even if you are not using the correct brushing technique, soft bristles will still be better.   You will also need a good fluoride toothpaste. Fluoride strengthens teeth and protects them from decay and from the formation of cavities. Electric toothbrushes are not any more effective at cleaning teeth than regular manually-operated ones. However, some people find that they are inclined to brush their teeth more regularly and for longer when they own an electric toothbrush, so investing in one may not be a bad idea. Dentists recommend that you should replace your toothbrush every 3 to 4 months, as they become less effective at cleaning over time. When brushing your teeth, hold the toothbrush at a 45 degree angle against the gum line and sweep the brush away from the gums, in a short vertical, back-and-forth, or circular motions. Try not too scrub too hard, as this can actually damage the enamel on your teeth and cause high sensitivity to any type of stimulus. Pay attention to each tooth as you brush, making sure that you don't miss any. Remember to brush the outer surfaces, the inner surfaces and... 

Now, please write a short abstract for it in Vietnamese. Abstract:
Xác định vị trí của mảng bám dựa vào các vết màu. Dùng đúng loại bàn chải và kem đánh răng. Sử dụng kỹ thuật đánh răng đúng. Tập trung vào từng chiếc răng. Nhớ chải cả lưỡi.