*4.2.3. Restorative treatment*

Peck and Peck [34] stated that teeth are, by nature, perfect structures. However, a tooth with altered anatomy can often form a malocclusion. For the authors, the orthodontist should increase their understanding of the limitations of orthodontic therapy, and know the value of procedures to change dental forms. Only in this way can treatment success be achieved.

Andrews [35] cited in his book "Straight Wire: Concept and Apparatus" that when there are spaces between teeth due to discrepancy of tooth size, where there are small teeth, orthodontic correction is contraindicated, and recommend the restoration of these teeth with composites or prosthetic crowns.

However, even if there is a discrepancy of dental size, orthodontic treatment may be an auxiliary tool to redistribute the spaces between the teeth before the restorative procedure. This allows the dentition in the anterior teeth to be performed according to the golden ratio, obtaining a better esthetic result [24, 31].

#### *4.2.4. Other types of treatments*

Bell [36] argued for the immediate closure of diastema by subapical and interdental osteotomy, justifying that there is a great unpredictability of diastole orthodontic closure stability and that this approach is difficult and takes a long time. In addition, the author believes that the alveolar bone is the major factor responsible for the difficulty in the orthodontic movement of the teeth and for the final stability, as opposed to the majority of authors who consider the labial frenulum and adjacent soft tissues as the main factor for relapse.
