Orthodontic Appliance Complication
Conditions
Brief summary
The study aims to compare the anchorage control using arch wire stopper versus mini-screws in post-pubertal patients with maxillary dentoalveolar protrusion
Detailed description
The study begins with patient selection according to inclusion and exclusion criteria, followed by treatment planning, and then bonding of orthodontic brackets of the upper and lower arches, including the second maxillary molars. After leveling and alignment for all participants, the extraction of the maxillary first premolars will be performed. • In the "Intervention Group" Canine retraction will be performed on 0.017×0.025 ss archwire with an archwire stopper mesial to the upper first molar. Afterwards, anterior segment retraction will be done using T-loop on 0.017x0.025 TMA archwire • In the "Comparator Group" Canine retraction on 0.017×0.025 ss archwire with the upper first molars indirectly anchored to inter-radicular mini screws Afterwards, anterior segment retraction will be done using T-loop on 0.017x0.025 TMA archwire Lastly, the anchorage control in both groups and the secondary outcomes will be assessed using the obtained digital models and lateral cephalometric radiographs.
Interventions
DEVICEarchwire stopper mesial to the maxillary first molar group
canine retraction after the extraction of the maxillary first premolars with archwire stoppers is mesial to the maxillary first molars.
DEVICEinter-radicular mini-screw
canine retraction after the extraction of the maxillary first premolars, with the maxillary first molars indirectly anchored to the inter-radicular mini-screw.
Sponsors
Cairo University
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
SINGLE (Outcomes Assessor)
Eligibility
Sex/Gender
FEMALE
Age
15 Years to 25 Years
Healthy volunteers
Yes
Inclusion criteria
* Post-pubertal female patients. * Cases with bimaxillary protrusion or Class II Division 1 malocclusion that require maxillary first premolars extraction. * Full permanent dentition (not necessitating third molars). * Good oral hygiene.
Exclusion criteria
* Medically compromised patients. * Active periodontal disease or obvious bone loss in the maxillary arch. * Patients with habits that are detrimental to dental occlusion (thumb sucking, tongue thrusting). * Smoking or any systemic diseases. * Chronic use of any medications including antibiotics, phenytoin, cyclosporine, anti-inflammatory drugs, systemic corticosteroids, and calcium channel blockers. All the above factors affect the rate of tooth movement * Previous orthodontic treatment. * Missing teeth.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Amount of anchorage loss of the maxillary first molars | 6 months from the start of the canine retraction and after anterior segment retraction (12 months) | After full canine retraction, the amount of anchorage loss (mesial movement) of the maxillary first molars of will be assessed on the digital models |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Tipping of the maxillary first molar. | 6 months from the start of the canine retraction and after anterior segment retraction (12 months) | the degree of tipping of the maxillary first molars will be assessed on the lateral cephalometric radiograph |
| Maxillary incisors inclination | 6 months from the start of the canine retraction and after anterior segment retraction (12 months) | The change in the maxillary incisors inclination will be assessed on the lateral cephalometric radiograph |
| Maxillary incisors anteroposterior position | 6 months from the start of the canine retraction and after anterior segment retraction (12 months) | The change in the maxillary incisors anteroposterior position will be assessed on the lateral cephalometric radiograph and digital models |
Countries
Egypt
Contacts
PRINCIPAL_INVESTIGATORMennatallah Ali
Cairo University
Outcome results
None listed