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The aim of the study is to assess the treatment effects of ZTPA versus VHA in the correction of anterior open bite in mixed dentition.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| vertical holding appliance | Active Comparator | a transpalatal arch with acrylic button |
|
| Zachrisson transpalatal arch | Experimental | a transpalatal arch with 2 posterior loops and 1 anterior loop |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Zachrisson transpalatal arch | Device | transpalatal arch with 2 posterior loops and 1 anterior loop |
|
| Measure | Description | Time Frame |
|---|---|---|
| Vertical skeletal measurements using cephalometric analysis | 9 months |
| Measure | Description | Time Frame |
|---|---|---|
| Overbite reduction | 9 months |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| ola a yehia, master | Contact | 01015618886 | ola.alaa@dentistry.cu.edu.eg | |
| yomna a yehia, master | Contact | 01001459692 | yomna.alaa@dentistry.cu.edu.eg |
| Name | Affiliation | Role |
|---|---|---|
| ola a yehia, master student | Cairo University | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Faculty of Dentistry Cairo University | Recruiting | Cairo | Egypt |
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| Vertical holding appliance | Device | transpalatal arch with arcylic button |
|