The fastest way to correct a crooked adult incisor would be to address it with tooth preparation and then restoration. Adults with one crooked incisor may have a malocclusion due to torsion, labial tilt, etc. The preferred method is usually orthodontic treatment, which can be done without grinding the tooth tissue. The preferred method is usually orthodontic treatment, which can be done without grinding the tooth tissue. However, orthodontic treatment usually requires the entire mouth to be treated together, and the treatment time is longer. Therefore, the fastest way to correct the problem should be with tooth preparation and then restoration. Crooked incisors are ground down and then restored with veneers or full crowns to restore a shape and alignment that is in harmony with the neighboring teeth. Adults with a crooked incisor are advised to visit the hospital as soon as possible for treatment or therapy under the guidance of the doctor.