Class II Division 1 Malocclusion
Conditions
Brief summary
The aim of the study is to compare an Infra-zygomatic Mini implant supported appliance with headgear in distalization and intrusion of maxillary dentition for treatment of growing patients with class II malocclusion (maxillary excess)
Detailed description
In this randomized trial, 2 groups will be included. The first group will receive an Infra-zygomatic Mini implant supported appliance. In the second group, the patient will receive a removable high pull headgear. the follow-up period will be 8 months or till class I canine or incisors relation is obtained. the assessment will be through a lateral cephalogram
Interventions
DEVICEInfra-zygomatic Mini Implant Supported Appliance
1. leveling and alignment of the four maxillary incisors 2. infra zygomatic mini-implant will be placed bilaterally 3. wire frame work that is designed resembling the inner bow of headgear will be adapted to the upper arch 4. a heavy arch wire engaging the 4 incisors will be attached to the wire frame work 5. orthopedic force will be delivered from the mini-implants to the wire frame work
DEVICEhigh pull head gear
1. acrylic maxillary splint is made with flying tubes 2. high pull head gear is adapted to be inserted in the flying tubes
Sponsors
Cairo University
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
SINGLE (Outcomes Assessor)
Eligibility
Sex/Gender
MALE
Age
7 Years to 15 Years
Healthy volunteers
Yes
Inclusion criteria
1. Growing patients ( cervical vertebrae maturation stage cs2-cs3 ) 2. Maxillary excess 3. Minimum overjet 4 mm 4. class II canines or incisors 5. Increased incisal show at rest and on smiling 6. Normal and increased vertical growth pattern 7. No previous orthodontic treatment 8. No congenitally messing teeth except third molars
Exclusion criteria
1. Inadequate incisal show 2. Class II with deficient mandible and normal maxilla 3. Patients with any syndrome 4. Patients with horizontal growth pattern
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Anteroposterior position changes of upper first molars. | 8 months | Measurements on the lateral cephalogram |
| Anteroposterior position changes of the maxilla | 8 months | Measurements on the lateral cephalogram |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Vertical position changes in maxilla | 8 months | Measurements on the lateral cephalogram |
| Vertical position changes of upper first molars | 8 months | Measurements on the lateral cephalogram |
| Position changes of upper incisors | 8 months | Measurements on the lateral cephalogram |
| Anteroposterior skeletal changes in mandible | 8 months | Measurements on the lateral cephalogram |
Countries
Egypt
Contacts
Primary ContactAhmed Afifi
Outcome results
None listed