For the teeth into the concave, the treatment measures can be taken as follows: 1, wear movable orthodontic appliances: when the teeth tilted inward during the period of deciduous or permanent tooth replacement, you can wear movable orthodontic appliances, pushing the teeth to the lip and cheek, while expanding the width of the dental arch, with the front traction, stimulating the full development of the jawbone. 2, change bad habits: so that patients correct the lower lip, tongue, mouth breathing and other bad habits, to promote muscle 3, dental preparation: a few teeth occurring mild lingual tilt, you can carry out dental preparation, the production of all-porcelain veneers or crowns to improve the appearance. 4, wearing fixed or invisible orthodontic appliances: the upper and lower teeth are obviously tilted inward, you can wear fixed or invisible orthodontic appliances, traction teeth movement, stimulate the growth of alveolar bone alteration, after the completion of correction to remove the orthodontic appliances, wearing retainers.