From your photo and description, there are a few different ways a cosmetic dentist could approach making your teeth appear longer and reducing the amount of gum that shows when you smile. One option I would consider exploring before committing to veneers is a conservative laser gum lift, or gingivectomy. This removes excess gum tissue and exposes more of the natural tooth underneath. In some patients, simply raising the gum line can make the teeth look significantly longer and improve the overall proportions of the smile without changing the teeth themselves. There are generally two ways the gum line can be raised. The simpler approach is a gingivectomy, where only gum tissue is removed, often with a dental laser. If a larger amount of gum needs to be raised, there may not be enough space to safely remove only the gum tissue. In that situation, a periodontist may recommend crown lengthening, which can involve removing or reshaping a small amount of the bone underneath the gums so the gum line can be positioned higher while maintaining a healthy relationship between the gum and the underlying bone. Porcelain veneers are another option and can be used to make the teeth look longer, alter the square shape you mentioned, and change the overall proportions of the smile. Veneers can also be combined with either a laser gum lift or crown lengthening. In fact, when someone wants a more substantial smile transformation, we frequently plan the gum line and the veneers together so the new tooth lengths and shapes are designed as one complete smile. So your main options would be: * A conservative laser gum lift alone first, then reassess how you like the appearance.* Crown lengthening if a more significant gum lift is required.* Veneers to change the length and shape of the teeth.* A gum lift or crown lengthening combined with veneers for the greatest overall change. Since you are specifically concerned about both the amount of gum showing and the square shape of your teeth, I would have a cosmetic dentist evaluate how much improvement you could realistically get from gum lifting alone before deciding whether veneers are necessary.