Lower Anterior Crowding
Conditions
Brief summary
The goal of this randomized clinical trial is to compare the accuracy of tooth movement achieved by 3D printed aligners versus thermoformed aligners in patients with lower anterior crowding. The study aims to evaluate whether directly printed aligners provide more accurate and predictable orthodontic tooth movement compared to conventional thermoformed aligners.
Detailed description
Recently, a new resin for 3D direct printed aligners (DPA) has been introduced. This resin, characterized by its viscoelastic properties, allows for precise control over material dimensions, structure, and properties. This enables the aligners to exert constant and gradual forces within the physiological limits of tooth movements . Tera Harz Tc-58, a new direct-printed resin material introduced by Graphy Company, exhibits a significant shape memory effect. Approximately 90% of the deformation is recovered within 10 minutes, while 96% recovered after 60 minutes, whereas PETG maintains its deformed shape and shows no shape recovery. DPA shows a significant enhancement in treating different moderate malocclusion cases by reducing the peer assessment rating (PAR) score by 86% and also reducing the need for attachment which simplifies treatment. This study aims to determine the accuracy of DPA in facilitating tooth movement and to identify which types of tooth movements are more accurately achieved with DPA compared to conventional aligners.
Interventions
DEVICE3d printed aligner
direct printed aligner will be used
DEVICEthermoformed aligner
conventional thermoformed aligner will be the gold standard
Sponsors
Cairo University
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
11 Years to 25 Years
Healthy volunteers
No
Inclusion criteria
* Non-extraction orthodontic treatment cases * Mild to moderate lower anterior crowding (\<5 mm) * Age between 12 and 25 years * Dental rotation less than 30 degrees * Relapse cases with crowding less than 5 mm
Exclusion criteria
* Active or history of periodontal disease * Presence of systemic disease * Temporomandibular joint disorders (TMJ) * Missing teeth
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| accuracy of tooth movement | 6 month | The accuracy of tooth movement will be assessed by comparing the predicted tooth position from the digital treatment plan (TP) with the actual post-treatment position (T1) using 3D superimposition techniques. Measurements will include linear and angular differences for each tooth using digital software analysis. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Patient reported Pain | 6 month | Pain levels will be evaluated using a Visual Analogue Scale questionnaire completed by participants during aligner therapy. its score from 1 to 10 in which score 10 is the worst pain level |
Countries
Egypt
Outcome results
None listed