The space between front teeth can be closed with bonding, this is the most economical and conservative approach. However, over time the bonding can discolor and will need to be replaced. Need to keep in mind also that the teeth will become wider and a mock-up prior to placing the bonding permanently can give the patient a better idea how things will look. The gap can also be closed with veneers, but it is more costly, requires two appointments and will be more drilling on the teeth.