Canines

These teeth are rarely considered for extraction unless very ectopic (Fig. 8). The loss of a canine makes canine guidance impossible and may compromise a good functional occlusal result. Contact between a premolar and lateral incisor is often poor and canines can act as ideal abutment teeth because of their long root length and resistance to periodontal problems. Palatally ectopic canines can sometimes be in unfavourable positions for alignment, and lower ectopic canines often require extraction rather than alignment. In many of the former cases the first premolar can be aligned with a mesial inclination and rotated mesio-palatally to hide the palatal cusp and provide a better aesthetic result.

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