Early loss of milk tooth might result the obstruction and deformation of the permanent teeth. With proper "maintenance" of milk teeth it can be prevented and avoided.
During the treatment of the decayed milk teeth filling or so called polishing is applied. No explanation is needed for the first one; the second means that the decayed part of the tooth is "cut" from the teeth (of course with the proper technology) and we prevent further decay.
Not treated decayed milk teeth might cause dental pulp inflammation or bone tissue inflammation. These problems can be quite painful and beyond physically wearing out the children they van be "worn out" mental as well and it can be very difficult to carry out any kind of treatment or examination in the future. We keep emphasizing the importance of prevention.