Complications resulting from rapid maxillary expansion with tooth-tissue-borne expander: four clinical case reports

Admin Dental Press

Edition V18N03 | Year 2019 | Editorial Clinical case | Pages 101 to 117

Luciana Duarte Caldas, Marcos Alan Vieira Bittencourt, Sandra Regina Torres

Introduction: In patients with maxillary atresia and/or posterior crossbite, rapid maxillary expansion (REM) is generally the orthodontic treatment of choice, whether patients are children, adolescents or young adults. This therapy requires fabrication of an orthodontic/orthopedic appliance, frequently of the tooth-tissue-borne type, which requires daily activations. Objective: The aim of this study was to describe four clinical cases that presented complications resulting from the RME procedure and their complete spontaneous repair after the removal of the orthodontic appliance. Conclusion: The support provided by the mucosa because of the acrylic structure of Haas expander may cause the formation of lesions at palatal mucosa, resulted from compression of soft tissues in this region.

Palatal expansion technique, Necrosis, Palate,

Caldas LD, Bittencourt MAV, Torres SR. Complicações decorrentes da expansão rápida da maxila com aparelho dentomucossuportado: relato de quatro casos clínicos. Rev Clín Ortod Dental Press. 2019 Jun-Jul;18(3):101-17. DOI:

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