There are three kinds of treatment for the spaces between the front teeth (incisors).

1. Orthodontic Treatment

This is a treatment that removes spacing by moving teeth while keeping the  teeth as they are. Orthodontic problems are easier to correct if treated early. But children and adults can both benefit from orthodontics.  In terms of maintaining the teeth, this is the most recommended treatment but there is also a drawback in it such as long treatment period and the uncomfortable feeling during the treatment period due to the orthodontic appliance equipped to the teeth.

2. Resin Treatment

It is a simple treatment that takes only thirty minutes for treatment with relatively low cost. However, the treated teeth can be chipped off from a strong outer force and there is a possibility of a little discoloration with age.
It is repairable as no teeth are removed. In addition, if carefully used, it lasts as long as 7 to 10 years.

3. Prosthetic Rehabilitation

There are two ways for prosthetic rehabilitation. One is to glue a tooth-shaped ceramic laminate-as thin as the thickness of a nail-to the real tooth.
The other is to reduce the tooth and place a ceramic crown on the place.
The former is reducing the surface of the tooth only a little bit-actually less than the latter-but it is not as durable as the other one.