Shimaa Nasr
Cairo, Egypt
Completed
NCT Number: NCT07277543
Assessment of Dentoskeletal Changes After Treatment of Skeletal classII by Twinblock Versus Monoblock Appliances
Assessment of dentoskeletal changes after treatment of skeletal classII growing patient by twin block versus mono block ,clinical trial stuy
Completed
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Notify MeKey information
Conditions
Age range
9 year–12 year
Sex eligibility
Female
Study type
Interventional
Phase
Not applicable
Primary location
About this study
Group(A):patients will be treated with twinbLock Group(B):patients will be treated with monobLock
Who can participate
Healthy volunteers accepted: No
Only the study team can determine whether someone qualifies for participation.
Inclusion criteria
- Female patients to avoid any sexual dimorphism which may affect the comparison.
- Skeletal Class II (ANB° > 5°) with normal maxilla (SNA° = 82° ±4°) and retrognathic mandible (SNB° < 87°).
- Age range from 9 to 12 years.
Exclusion criteria
- Previous history of orthodontic treatment.
- Congenitally missing or extracted permanent teeth.
- Posterior cross bites or severe maxillary transverse deficiency.
- Severe facial asymmetry determined by clinical or radiographic examination.
- Poor oral hygiene.
- Systemic diseases that may affect the treatment results.
Treatment and study plan
wearing of twinblock after bite correction
Devicebite registration at edge to edge position ,twin block wearing 15hrs/day
wearing of monoblock after bite correction
Devicebite registration at edge to edge position ,mono block wearing 15hrs/day
Primary outcomes
-
skeletal classII correction and dental changes
Time frame: 8_12 month
standerized extraoral radiograph and Cone-Beam Computed Tomography(CBCT)
Secondary outcomes
-
Assessment of airway changes
Time frame: 8-12month
cone beam computed tomography(cbct)
Sponsors and collaborators
Lead sponsor
Faculty of Dental Medicine for Girls
Other Gov
Registry information
Official study title
Assessment of Dentoskeletal Changes After Treatment of Skeletal classII Growing Patient by Twinblock Versus Monoblock Appliance
Important dates
- Study start
- 2023
- Primary completion
- 2025
- Study completion
- 2025
- First posted
- Dec 11, 2025
- Registry last updated
- Dec 11, 2025
OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.
View the official ClinicalTrials.gov record (opens in a new tab)This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.