If your teeth didn't protrude before, but now they protrude a little, you need to rule out wisdom teeth and periodontal factors first. Sometimes wisdom teeth erupt, which will lead to anterior teeth protrusion; Teenage periodontitis can also lead to fan-shaped protrusion of anterior teeth. 1. Are you growing wisdom teeth? 2. Are the front teeth a little loose? If not, you can consider correcting it.

According to what you said, it should be corrected, but most protruding teeth need to be extracted for correction, mainly depending on the degree of congestion and protrusion of your teeth and whether you are willing to accept the method of removing enamel from adjacent surfaces.

Tooth extraction is a means, as long as the goal is achieved. Sometimes tooth extraction is a last resort, but the result is often better than choosing to die without tooth extraction.

Yellow teeth depend on the cause, not just because everyone in the family has them. Maybe it's just tetracycline teeth.

Most of the stars you meet don't wear condoms because they use lingual correction technology. The braces are on the lingual side and cannot be seen from the outside. It depends on which city you are in, general hospital.

It's normal to correct at the age of 20, because you didn't pay much attention to it when you were young (at that time, your parents paid attention to it for you), but now you are older and have your own requirements!

Go to a regular stomatological hospital. Bleaching and braces are expensive things! Probably 1W (good hospital, ha)