Clinical trials: Posterior Cross Bite
Maxillary Transverse Deficiency (Posterior Crossbite) in Early Adolescent Patients
Posterior Resin Bite Turbos Effect on Maxillary Expansion Using a HYRAX Expander in Early Adolescents
This randomized controlled clinical trial aims to evaluate the effect of posterior disarticulatory resin bite turbos on the rate of maxillary expansion using a HYRAX expander in early adolescent patients.
- Trial name
- HYRAX_ RME_SME (NCT07739498)
- Testing
- Intervention 1: HYRAX expander with posterior disarticulatory resin bite turbos, Intervention 2 (Control): HYRAX expander alone
- Where
- Egypt
- Volunteers
- 22 people
- Sponsor
- Mansoura University
Posterior Crossbite
Tooth-Borne Versus Tooth-Bone-Borne Rapid Maxillary Expanders: A Stereophotogrammetric Evaluation of Soft Tissues
The force exerted by the rapid maxillary expansion (RME) appliances provides expansion of the transverse dimension by splitting of the midpalatal suture.
- Trial name
- NCT04828213
- Testing
- Rapid Maxillary Expansion Treatment with Tooth-borne RME appliance (Hyrax), Rapid Maxillary Expansion Treatment with Hybrid hyrax RME appliance
- Volunteers
- 32 people
- Sponsor
- Gökçenur Gökçe
Posterior Cross Bite
Evaluation of Modified Hyrax Versus Quad Helix in Treatment of Posterior Cross Bite
This study will be performed to evaluate the treatment of posterior cross-bite with modified hyrax \& Quad helix appliances and to compare which one will provide better results in relation to chewing difficulty in children with…
- Trial name
- NCT06300775
- Testing
- modified hyrax, quad helix
- Where
- Egypt
- Volunteers
- 10 people
- Sponsor
- Cairo University
Palatal Expansion Technique, Malocclusion
Comparison Between Two Rates of Activation of Miniscrew-Supported Upper Jaw Expander in Adolescents
Miniscrew-supported maxillary expanders provide advantages over conventional tooth-supported expanders. However, there is no consensus in the literature regarding their activation protocol.
- Conditions
- Palatal Expansion Technique, Malocclusion, Posterior Crossbite, Maxillary Hypoplasia
- Trial name
- NCT04225637
- Testing
- Miniscrew-Supported Maxillary Expander- Slow activation, Miniscrew-Supported Maxillary Expander- Rapid activation
- Where
- Egypt
- Volunteers
- 30 people
- Sponsor
- Alexandria University
Maxillary Constriction, Unilateral Posterior Crossbite
Analysis of the Dentoskeletal Effects of the Expander With Differential Opening
This study evaluates the dentoskeletal effects of the expander with differential opening in orthodontic patients in the mixed dentition.
- Conditions
- Maxillary Constriction, Unilateral Posterior Crossbite, Bilateral Posterior Crossbite, Mandibular Dental Arch Constriction
- Trial name
- NCT02810353
- Testing
- Differential rapid maxillary expansion, Conventional rapid maxillary expansion
- Where
- Brazil
- Volunteers
- 50 people
- Sponsor
- University of Sao Paulo
Mandibular Asymmetry, Functional Shift of the Mandible
Quad Helix and Correction of Mandibular Asymmetry
To compare the effectiveness of the Quad Helix, an orthopaedic conventional appliance, in the correction of skeletal mandibular asymmetry, on frontal x-ray, in subjects treated before or after 7 years.
- Trial name
- NCT04429113
- Testing
- Maxillary expansion with conventional Quad Helix bonded on molars.
- Where
- France
- Volunteers
- 67 people
- Sponsor
- University Hospital, Montpellier