Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
The study is randomized controlled trial ...The null hypothesis suggests that there is no significant difference between actual and predicted dental movement in patients treated using direct printed aligners produced with Graphyâ„¢ Tera Harz TA-28 resin as compared to those treated with thermoformed clear aligners.
the patients will be randomly assigned to one of two study groups which either direct printed or thermoformed clear aligner. All patients would be given the same instructions: aligners had to be worn for at least 22 hours per day, except during meals and oral hygiene activities, and should be changed every 10 days.Teeth positions would be planned according to esthetic and functional principles, starting with the 3D T0 digital model and aligning and leveling dental arches following orthodontic aligner biomechanical principles. Each aligner had a planned movement speed of 0.2 mm linear displacement, 2° long-axis rotation, and a vestibulo-lingual inclination of 2.5°.
Not provided
Not provided
Not provided
Not provided
| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Direct-printed aligner (Graphy) | Experimental | Patients will be treated with direct-printed Graphy aligners until dental levelling alignment; space closure is finished. |
|
| Thermoformed aligner | Active Comparator | Patients will be treated with thermoformed aligners until dental alignment, levelling, space closure is finished. |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Direct-printed aligner (Graphy) | Device | intraoral scanner would be used to scan patient teeth then aligner fabrication by direct printing then the patient will be treated with direct-printed aligners(graphy) until dental levelling alignment; space closure is finished. All patients would be given the same instructions: aligners had to be worn for at least 22 hours per day, except during meals and oral hygiene activities, and should be changed every 10 days. |
| Measure | Description | Time Frame |
|---|---|---|
| predictability of tooth movement | The primary outcome will be calculated as the percentage difference between the final and initial positions for each individual tooth movement assessed and will be expressed as a continuous numerical variable representing tooth movement predictability (%). | 12 months |
| Measure | Description | Time Frame |
|---|---|---|
| predictability within different types | 1. The secondary outcome will be assessed by comparing the predictability within different types of tooth movement of the same group. | 12 months |
| Colour change of clear aligners |
Not provided
Inclusion Criteria:
Exclusion Criteria:
Not provided
Not provided
Not provided
Not provided
Not provided
| Name | Affiliation | Role |
|---|---|---|
| hussin anwar | University of Baghdad | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| The sample will be recruited from multicentre clinics (Private dental clinic, Orthodontic Department at Karbala Governmental Specialized Dental Centre, Orthodontic Department, College of Dentistry University of Baghdad). | Karbala | Iraq |
Not provided
| ID | Term |
|---|---|
| D008311 | Malocclusion, Angle Class I |
| D003441 | Crowding |
| ID | Term |
|---|---|
| D008310 | Malocclusion |
| D014076 | Tooth Diseases |
| D009057 | Stomatognathic Diseases |
| D013037 | Spatial Behavior |
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
|
| Thermoformed aligner | Device | An intraoral scanner would be used to scan patient teeth then aligner fabrication by thermoforming then the Patients will be treated with thermoformed aligners until dental alignment, levelling, space closure is finished. All patients would be given the same instructions: aligners had to be worn for at least 22 hours per day, except during meals and oral hygiene activities, and should be changed every 10 days. |
|
UV-Visible spectrophotometer for samples from both groups before and after intraoral aging.
| 12 months |
| Degree of Conversion | Assessment of the Degree of Conversion of direct printed Tera Harz TA-28 resin using Fourier-transform infrared (FTIR) spectroscopy for the liquid resin before curing and for samples after curing and post-processing. | 12 months |
| shape memory effect | Assessment of the shape memory effect of direct printed Tera Harz TA-28 aligners, the bending test would be used to investigate and directly visualize the shape recovery property. | 12 months |
| D001519 |
| Behavior |