When teeth are inclined or rotasted can achieve straightening teeth with orthodontic treatment (braces) or with prosthetic therapy (cases, porcelain veneers) or dental bonding.
Definitely need to understand that the ideal solution to a depth of time, is the orthodontic treatment
The reason is that the orthodontic treatment is achieved the restoration of natural teeth, without the need to preparation of enamel (headgear, aspects porcelain) or alternatively with dental bonding (which is not necessary usually to preparation of the enamel)