RT - Journal Article T1 - Nonsurgical Miniscrew-Assisted Rapid Palatal Expansion in an Adult Patient JF - gums-dent YR - 2018 JO - gums-dent VO - 7 IS - 2 UR - http://3dj.gums.ac.ir/article-1-319-en.html SP - 85 EP - 93 K1 - Miniscrew-Assisted Rapid Palatal Expansion K1 - Adult K1 - Expansion K1 - Cone-beam computed tomography AB - Transverse maxillary deficiency is relatively prevalent in orthodontic patients. This article reports the use of a Miniscrew-Assisted Rapid Palatal Expansion (MARPE) device for the correction of transverse skeletal maxillary constriction in an adult patient. The patient was a 20-year-old girl with a transverse maxillary deficiency and bilateral posterior crossbite. A MARPE device was positioned on her palate using 4 miniscrews. The activation protocol was one-quarter turn per day every other day, with a total activation duration of 10 weeks following with a 3-month retention period. Pre-MARPE and post-MARPE cone-beam computed tomography cross sections presented a skeletal expansion of maxilla. This report confirms the effective treatment of a mature patient with severe maxillary constriction, highly deep palate, and posterior crossbite using a custom-made modification of MARPE. LA eng UL http://3dj.gums.ac.ir/article-1-319-en.html M3 10.32598/3dj.7.2.85 ER -