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Efficacy of Transverse Maxillary Expansion With AMCOP Preformed Appliances
Sponsor: University of Pavia
Summary
The present study aimed to investigate the cross-sectional effect of Class I AMCOP devices in patients of all possible skeletal types from both vertical skeletal pattern (normodivergent, hyperdivergent, hypodivergent) and sagittal skeletal pattern (skeletal Class I, skeletal Class II, skeletal Class III). The criterion for choosing patients was determined by the protocol of using these devices, which is to always perform an AMCOP First Class phase with the aim of improving transverse coordination of the arches, Spee's Curve and Wilson's Curve.
Official title: Efficacy of Transverse Maxillary Expansion With AMCOP Preformed Appliances: Prospective Clinical Study
Key Details
Gender
All
Age Range
7 Years - 13 Years
Study Type
INTERVENTIONAL
Enrollment
30
Start Date
2025-03-15
Completion Date
2026-02
Last Updated
2025-04-16
Healthy Volunteers
No
Conditions
Interventions
AMCOP appliance
The device measure will be determined with OrthoCad program on digital models, taking the distance between the vestibular cusps of the upper first molars, at the level of the most prominent point. AMCOPs are preformed devices and there are five different measures based on transverse diameter: 1 (45mm), 2 (50mm), 3 (55mm), 4 (60mm), 5 (65mm). Requiring expansion, we will choose an higher AMCOP measure than the transverse distance measured on the digital models at T0. The clinical indications for use of the AMCOP device will be as follow: * in the first week, wear the appliance during the night and for 30 minutes during the day * from the second week onward, wear the appliance for one hour during the day and throughout the night During this time, every month we will visit patients and we will expand the device by soaking it in hot water at about 70 °C for 30 s and then in cold water to stabilize it in its new shape.
Locations (1)
Unit of Orthodontics and Pediatric Dentistry - Section of Dentistry - Department of Clinical, Surgical, Diagnostic and Pediatrics - University of Pavia
Pavia, Lombardy, Italy