Clinical trials: Posterior Crossbite
Posterior Crossbite, Maxilla; Hypoplasia
Leaf Expander Versus Hyrax Expander in Mixed Dentition Patients With Posterior Crossbite.
Design: Two-arm parallel randomized clinical trial in mixed dentition (6-12 years). Arms: (1) 9 mm, 900 g leaf expander; (2) 9 mm Hyrax expander.
- Trial name
- NCT07301918
- Testing
- The Leaf expander, Hyrax expander
- Where
- Egypt
- Volunteers
- 30 people
- Sponsor
- Cairo 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
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
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
Pain, Discomfort, and Functional Impairments During Rapid and Slow Maxillary Expansion
This study will assess and compare the levels of pain, discomfort, and functional impairments between rapid and slow maxillary expansion in treating skeletal maxillary constriction in the early adolescence period (i.e.
- Trial name
- NCT04734054
- Testing
- Modified Hyrax Palatal Expander, Removable Palatal Expander
- Where
- Syria
- Volunteers
- 32 people
- Sponsor
- Damascus University
Malocclusion, Maxillary Expansion
Treatment of Unilateral Posterior Cross Bite in Children
Rapid maxillary expansion and quad-helix are two well established appliances in dentistry used for posterior cross bite treatment.
- Conditions
- Malocclusion, Maxillary Expansion, Pain Children
- Trial name
- NCT04458506
- Testing
- Maxillary expansion
- Where
- Sweden
- Volunteers
- 72 people, healthy volunteers welcome
- Sponsor
- Region Örebro County