Chipped front teeth from grinding - How to fix? (photo)

If your front teeth have gradually chipped and worn down from grinding over the years, there are really two different approaches you can take.
The more conservative option is to protect the teeth you have now and try to prevent any additional wear. The most important part of that is finding a night guard that is comfortable enough that you will actually wear it every night. In my experience, some patients stop wearing night guards because they are simply too thick or bulky. In those situations, a thinner appliance can sometimes be much easier to tolerate. Some patients even use a clear retainer-style appliance similar to an Invisalign retainer. These thinner appliances generally will not last as long as a traditional night guard, especially in a heavy grinder, but an appliance only helps if you are willing to wear it consistently. Your dentist can help determine which type is safest for your particular bite and grinding pattern.
The second option is to restore some of the tooth length and shape that has already been lost. Porcelain veneers can sometimes be a very good option for this. Looking at your photo, your teeth have developed the flatter, shorter appearance that commonly occurs after years of grinding. Veneers can restore some of that lost length and recreate more natural and youthful contours.
For someone who is a significant grinder, however, I would be cautious about making the veneers extremely thin. In my opinion, a true no-prep approach would probably not be my first choice in a case like this. I would generally lean toward minimal-prep porcelain veneers with enough porcelain thickness to provide strength, while still preserving as much natural tooth structure as possible. Pressed e.max porcelain is one material I frequently prefer for cases like this because it can provide a good combination of strength and natural translucency.
One very important point is that veneers do not eliminate the grinding. If you restore the teeth but continue heavily grinding without protecting them, you can still chip or fracture the porcelain over time. So even if you choose veneers, I would strongly recommend planning on wearing a properly designed night guard afterward.
The goal would not simply be to make the teeth longer. It would be to restore the proportions and natural anatomy that have gradually been lost while making sure the new bite and veneers are designed to withstand your grinding as well as reasonably possible.