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IRCT20170723035238N4 IRCT 2022-01-22 Tabriz University of Medical Sciences The effect of the clear expansion plate on the posterior teeth of the upper arch The comparison of the effect of expansion with traditional and clear expansion plate on inclination of upper molars; a randomized clinical trial 2022-01-25 anticipated 60 Complete https://irct.ir/trial/61047 interventional Randomization: Randomized, Blinding: Not blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Randomization description: Numbered, sealed, opaque envelope (SNOSE); in this allocation system the researchers use mate envelopes. The number of the envelopes is equal with the number of the patients in each group. Then the envelops are gathered in the box. For each patients one envelope will be selected randomly and the group ( case or control ) will be selected in this way. N/A Upper arch constriction. Intervention 1: Intervention group: clear expansion plate. In This group we will use clear expansion plate for the patients who need arch expansion . Clear expansion plate is made from thermoplastic sheets which is routinely used for the fabrication of clear retainers. An expansion screw is embedded in the midpalatal region of the thermoplastic sheet. The patients will activate the screw twice a week . Each activation make separation between two halves of the appliance and expansion of the arch laterally. this expansion may change the buccolingual inclination of the posterior teeth. the buccolingual inclination of the upper first molar will be measured and compared before and after treatment. The inter-group comparison will be dene as well. Intervention 2: Intervention group: traditional expansion plate.In This group we will use traditional acrylic expansion plate for the patients who need arch expansion . acrylic expansion plate is made from the wire elements and acrylic framework. An expansion screw is embedded in the midpalatal region of the acrylic framework . The patients will activate the screw twice a week . Each activation make separation between two halves of the appliance and expansion of the arch laterally. this expansion may change the buccolingual inclination of the posterior teeth. the buccolingual inclination of the upper first molar will be The inter-group comparison will be dene as well.measured and compared before and after treatment. Undecided - It is not yet known if there will be a plan to make this available Justification or reason for indecision in sharing IPD is no decision has been made regarding to data release
public Ahmad Behroozian
Tabriz University of Medical Sciences / Golgasht st. / Azadi st.
Tabriz Iran (Islamic Republic of) 5166614711 +98 41 3334 7635 ahmadbehroozian@yahoo.com Tabriz University of Medical Sciences scientific Ahmad Behroozian
Tabriz University of Medical Sciences / Golgasht st. / Azadi st.
Tabriz Iran (Islamic Republic of) 5166614711 +98 41 3334 7635 ahmadbehrouzian@gmail.com Tabriz University of Medical Sciences Iran (Islamic Republic of) Iran (Islamic Republic of) Mixed dentition patients The patients' tendency to attend in the study Signing the informed consent form to participate in the study Upper arch constriction 5 years 14 years Both Poor patient cooperation in follow-up sessions Poor oral hygiene Extraction of upper first molars during the treatment Fracture, crown or any kind of restoration which involve the occlusal surface of the first molars M26.4 Malocclusion, unspecified Treatment - Devices Treatment - Devices Intervention group: clear expansion plate. In This group we will use clear expansion plate for the patients who need arch expansion . Clear expansion plate is made from thermoplastic sheets which is routinely used for the fabrication of clear retainers. An expansion screw is embedded in the midpalatal region of the thermoplastic sheet. The patients will activate the screw twice a week . Each activation make separation between two halves of the appliance and expansion of the arch laterally. this expansion may change the buccolingual inclination of the posterior teeth. the buccolingual inclination of the upper first molar will be measured and compared before and after treatment. The inter-group comparison will be dene as well. Intervention group: traditional expansion plate.In This group we will use traditional acrylic expansion plate for the patients who need arch expansion . acrylic expansion plate is made from the wire elements and acrylic framework. An expansion screw is embedded in the midpalatal region of the acrylic framework . The patients will activate the screw twice a week . Each activation make separation between two halves of the appliance and expansion of the arch laterally. this expansion may change the buccolingual inclination of the posterior teeth. the buccolingual inclination of the upper first molar will be The inter-group comparison will be dene as well.measured and compared before and after treatment. The change in the toque of upper posterior teeth. Timepoint: Before treatment and 6 months later. Method of measurement: Stone casts. Arch expansion. Timepoint: Before treatment and 6 months later. Method of measurement: Stone casts. Tabriz University of Medical Sciences Approved 2022-01-03 Ethics committee of Tabriz University of Medical Sciences Central building of Tabriz medical university / Golgasht st. / Azadi st. Tabriz East Azarbaijan Iran (Islamic Republic of)