There are several ways.
1) whitening and orthodontic treatment (plates, mouth guards, braces).
Pros: cost, keep your teeth invisible in everyday life.
Cons: time needed to achieve the desired effect. There are absolute contraindications to orthodontic treatment.
2) extraction of teeth with indications for this, and removable prosthetics + whitening of the remaining teeth
Pros: long-term design, production time
Cons: you are removing your teeth, you have a removable denture (for some it is a minus), there are absolute contraindications
3) using crowns + whitening the remaining teeth
Pros: long-term construction, unnoticed in everyday life. A short time until the effect is achieved.
Cons: endodontic dental treatment is required. You may be refused due to contraindications
4) veneers + whitening
Pros: imperceptible, it takes a little time to achieve the desired effect
Cons: preparation of healthy teeth is necessary for fixing veneers. Not the most durable design. Veneers can interfere with the transmission of masticatory pressure
5) removal + implantation + crowns / veneers and whitening.
The most expensive option and the last option. Cons as for everyone separately. The only advantages are the absence of a removable denture, and the fact that the implant distributes the load over the bone better than the denture.
I do not recommend any of them (well, maybe ordinary whitening) if you have healthy teeth.
I don’t know where this information comes from, but this is just whitening, such a special plate is made of plastic, you put it on only at night and pour some special liquid into it, after that your teeth will be white.
No, not really. They have veneers or lumineers. They are a thin strip that is made individually for each tooth and attached (glued) to the front of your tooth. The only thing is that your own teeth are eroded from below and in front, due to the wrong bite and the shape of their teeth