NCT04225637

Comparison Between Two Rates of Activation of Miniscrew-Supported Upper Jaw Expander in Adolescents

Comparison Between Two Activation Protocols of Miniscrew-Supported Maxillary Expander in Adolescents: A Randomized Controlled Clinical Trial

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 30 (actual)
• Sponsor: Alexandria University · Academic / Other
• Sex: All
• Age: 12 Years – 16 Years
• Healthy volunteers: Not accepted

Summary

Miniscrew-supported maxillary expanders provide advantages over conventional tooth-supported expanders. However, there is no consensus in the literature regarding their activation protocol. The purpose of the clinical trial is to evaluate and compare the effects of slow and rapid activation rates of miniscrew-supported expanders on the skeletal changes, dento-alveolar changes and the pain experience.

Detailed description

Transverse maxillary deficiency is one of the problems that are commonly encountered in the orthodontic practice. Miniscrew-supported maxillary expansion represents a promising modality for the treatment of transverse maxillary deficiency. However, controversies still exist regarding the activation protocol. One of these controversies is whether using a slow activation protocol would be more beneficial to the patients compared to a rapid activation protocol. Another question that consequently ensues is whether such activation protocol would result in less pain compared to the rapid activation protocol. The null hypothesis of the current study is that there is no difference between slow and rapid activation protocols of miniscrew-supported expander.

Conditions

• Palatal Expansion Technique
• Malocclusion
• Posterior Crossbite
• Maxillary Hypoplasia

Interventions

Type	Name	Description
DEVICE	Miniscrew-Supported Maxillary Expander- Slow activation	A maxillary expander is supported on 4 palatal miniscrews. The appliance is activated slowly by turning the expansion screw once every other day to correct the transverse maxillary deficiency.
DEVICE	Miniscrew-Supported Maxillary Expander- Rapid activation	A maxillary expander is supported on 4 palatal miniscrews. The appliance is activated rapidly by turning the expansion screw twice per day to correct the transverse maxillary deficiency.

Timeline

• Start date: 2019-03-01
• Primary completion: 2021-04-28
• Completion: 2021-06-01
• First posted: 2020-01-13
• Last updated: 2021-06-21

Locations

1 site across 1 country: Egypt