Management of Canine Crossbite with Combination of Expansion Screw and Labial Button: A Case Report Puspitarini Nindya Wardana 1(B ) , Maula Almira 2 , and Hanisa Juliawati 2 1 Professional Program, School of Dentistry, Faculty of Medicine and Health Sciences, Universityof Muhammadiyah Yogyakarta, Yogyakarta, Indonesia puspitarini@umy.ac.id 2 School of Dentistry, Faculty of Medicine and Health Sciences, University of Muhammadiyah Yogyakarta, Yogyakarta, Indonesia Abstract. Anterior crossbite is a malrelation in which one or more anterior teeth are malpositioned palatally or lingually in a centric occlusion with the mandibular anterior teeth. An alternative treatment to correct the anterior crossbite is by using a removable orthodontic appliance. This case report aims to report the management of canine crossbite using removable orthodontic appliances for a 25-year-old male patient with class I Angle’s dental malocclusion with canine crossbite and deep overbite malrelation. The treatment used a removable orthodontic appliance in the form of an expansion screw combined with a labial button. Within 7 months, the canine crossbite was corrected and the deep overbite was reduced. Proper case selection and patient compliance are needed to achieve a successful removable orthodontic treatment. Keywords: Canine crossbite · labial button · expansion screw 1 Introduction Malocclusion is an abnormal relationship between the teeth of the arch outside the nor- mal acceptable range. Malocclusion is not a life-threatening disorder, but it can cause problems with self-confidence, speech, chewing and swallowing disorders and peri- odontal disease [1]. Malocclusion can be caused by several factors, including hereditary factors, trauma, and bad habits [2]. Hereditary is the main factor in the causation of malocclusion, for example a difference between the shape, size, number of teeth and the arch which cause crowding of teeth [3]. Deep overbite is a common malrelation in both children and adults. Deep overbite is a condition in which the crowns of the mandibular incisors overlap vertically with the maxillary incisors when the teeth are in centric occlusion [4]. Anterior crossbite or single tooth crossbite is a malposition towards the palate or lingually one or more anterior teeth in a centric relationship with the mandibular anterior teeth [5]. © The Author(s) 2022 I. Permana and E. Rochmawati (Eds.): ICOSI-HSN 2022, 55, pp. 350–357, 2022. https://doi.org/10.2991/978-94-6463-070-1_43