[The treatment of cross-bites in the Angle Class I cases with modular 3 D lingual appliances]

Anterior cross-bites which involve one tooth or a group of teeth is commonly seen in every age groups. Removable or fixed appliances are used in the treatment of these cases. Both of these appliances have some advantages and disadvantages. The objective of this study is to evaluate the effectiveness of the Modular 3 D Adapter in the treatment of the anterior cross-bites. All of the 14 patients aged between 10 years 1 month and 24 years 2 months showed Angle Class I anterior Cross-bite malocclusion. Only the first molar tooth or teeth were banded, then 0.025 inch Adapter appliance was used Lingually. By applying a force between 60-70 grams, the normal occlusions were gained after 2 months.