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Introduction: Improvement of the tooth and occlusion arrangement can be performed with orthodontic treatment. Cooperativeness of patients will be very influential in the treatment progress which requires a long time. The study was aimed to determine the development of a treatment with maxillary expansion screws on removable orthodontic appliances at Dental Hospital of Faculty of Dentistry Universitas Padjadjaran. Methods: The research was descriptive. The sampling technique was purposive sampling with the specified criteria, as much as 20 study models of mild crowding were treated using maxillary expansion screws in the removable orthodontic appliance. Results: The treatment progress by activating expansion screws continuously showed that there was an increase in the dental arch width and a distance of tooth number 14 – 24 was 49.1% (significant), and a distance of tooth number 16 – 26 of 33.8% (significant). Conclusion: Treatment progress can occurred after activation of expansion screws 9-10 times, where the number of activations and interval days was 49.1% and 33.8% so that space was obtained to improve the tooth arrangement in patients with mild crowding.

jurnal kedokteran gigi universitas padjadjaran

&lt;p&gt;Kemajuan perawatan ortodontik dengan sekrup ekspansi rahang atas pada crowding ringan&lt;/p&gt;&lt;p&gt;Orthodontic treatment progress of mild crowding with maxillary expansion screws&lt;/p&gt;