Anterior open bite interception in mixed dentition – case report

Vol. 15 – Number 57 – 2022 Case report Page 28-37 Anterior open bite interception in mixed dentition – case report Breno Vasconcelos Nogueira¹ Isabella Diniz Schier1 Nicole Speranceta1 Stéffany dos Anjos Francisco2 Julia Carelli3 Francielle Topolski4 Alexandre Moro5 Abstract The anterior open bite (AOB) deserves unique attention as in addition to being the most frequent among vertical discrepancies and compromising dental aesthetics, it interferes in the patient chewing function and speech, consequently affecting their self-esteem. Due to its multifactorial character, this malocclusion can be caused by several reasons, such as genetic inheritance or maxillofacial development inherent to each individual. This study aimed to describe the treatment of a patient with AOB. Patient BS 7-year and 5-month-old had a Class I malocclusion with anterior open bite (-2.8 mm). The treatment plan was divided into two phases: In the first, the Haas appliance with fixed palatine crib in the upper arch was used; in the lower arch, a removable expander was used. Following the treatment, the fixed appliance was installed in both arches. The treatment lasted 9 months and achieved AOB closure. The second phase started after the eruption of the second permanent molars and lasted 13 months. In conclusion, it was observed that the treatment of AOB in two phases was an excellent choice for the patient treatment reported here. In the first phase, the bite was closed, and the arches were widened to allow the proper positioning of all the permanent teeth, which had their positioning perfectly detailed in the second phase. Descriptors: Orthodontics, malocclusion, anterior open bite. 1 Student of the Dentistry Course – Universidade Positivo. 2 Student of the Master’s Program in Dentistry – Universidade Positivo. 3 Student of the Doctoral Program in Dentistry – Universidade Positivo. 4 Professor of the Postgraduation Odontology Program – Universidade Positivo. 5 Professor of the Postgraduation Program in Dentistry – Universidade Positivo, Full Professor – UFPR. DOI: 10.24077/2022;1557-1206