An interventional study of maxillary expander with transpalatal strap S11 and conventional expantion in Crossbite (Posterior), Expansion of Maxillary Arch and Clear Aligner Appliance, sponsored by Aisha Ali Qahtani. Not yet recruiting at 1 site in Saudi Arabia. Open to participants aged 18 Years to 35 Years. Per ClinicalTrials.gov, last updated 2026-04-16.
Sponsored by Aisha Ali Qahtani · Not applicable, Interventional, and Treatment
To compare the effects of Smartee S11 expander with conventional clear aligner expansion using cone beam computed tomography (CBCT).
The secondary objective is to evaluate the degree of orthodontic expansion and the type of tooth movement achieved with Smartee aligners on the maxillary arch.
Each patient will be randomly allocated, and the entire patient included in this study will be divided into two groups.
1- healthy cooperative female and male patients who will undergo maxillary expansion with Smartee aligners, A young adult/adult patients starting from age of 18 up to 35 years old.
2- patients with maxillary compression of non-skeletal origin, moderate dental crowding in the upper arch (4-8mm). 3- patients with unilateral or bilateral crossbite, patients will be treated with intermaxillary elastics without distalization or mesialization of the dental arches.
4- patients with sufficient clinical crown height (greater than 4 mm), no mesial rotation of the upper first molar. 5- there is good compliance during the treatment (wearing aligners for 20 hours per day).
6- good quality x-rays with appropriate visualization of landmarks and control of head rotation. 7- absence of periodontal disease, and absence of previous prosthodontic treatments of the upper molars.
Exclusion Criteria:
with conventional expander
Device: conventional expantion
with S11 expander
Device: maxillary expander with transpalatal strap S11
new feature incorporated into the aligners, called trans Palatal bar (S11-Horizontal Arch Expander) which is an invisible clear trans Palatal expander customized to the patient through digital design and individual cutting
maxillary expansion with conventional expansion design
comparison the effect of S11 expander with conventional one
To compare the effects of Smartee S11 expander with conventional clear aligner expansion using cone beam computed tomography (CBCT).
Time frame: from the enrollment to the end of expansion at 6 months
Plan to share: No — The dataset contains sensitive patient information, and sharing it could compromise participant confidentiality despite de-identification efforts. Access to the data is therefore restricted in accordance with institutional review board (IRB) guidelines.
No publications or documents are linked to this record.
This study is not yet recruiting, as verified in Apr 2026. You cannot join it, but the record below documents what was studied.
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