There are gaps between normal teeth, but the neighborhood is tight enough to pass the dental floss, if there is a large gap, you need to consider orthodontic, veneers or resin repair.
1. Teeth are independent of each other, the gap between the general adjacent tight, the teeth are not easy to appear plugging, through the floss can feel resistance, but if the teeth appear plugging or wide gaps visible to the naked eye, indicating that the teeth adjacent to the problem.
2. The teeth can be tightened by orthodontic treatment. You can also consider grinding away some of the tooth tissue and then using porcelain or resin veneers to close the gap.
3. If the gap between the teeth gradually becomes bigger, it means that there is a problem with the teeth or periodontium, and you should go to the hospital as soon as possible to deal with periodontal diseases.