Muradova, NargizOzcirpici, Ayca Arman2020-07-172020-07-172019https://turkjorthod.org/Content/files/Cover%20and%20front%20matter(2).pdfhttp://hdl.handle.net/11727/4779Thumb sucking is an abnormal habit that occurs in childhood and can cause several malocclusions if it persists for a long time. Malocclusions caused by oral habits require proper treatment timing to maintain a normal growth and should be treated at an early age. This case report shows the management of thumb sucking and early correction of anterior open bite and posterior crossbite by a modified Haas expander. Three-year follow-up results showed the effectiveness of this special designed appliance.enginfo:eu-repo/semantics/openAccessThumb suckingModified Haas expanderanterior openbiteposterior crossbitetongue cribArticle3242472520005047683000102-s2.0-850846354972148-9505