Angle Class II, Malocclusion, Mandible Small
Conditions
Keywords
orthodontics, orthopedics, myofunctional appliance, Twinblock
Brief summary
Effects of modified fixed twin block versus removable twin block on skeletal class 2 growing patients with mandibular deficiency: A Randomized Clinical Trial
Detailed description
The main objective of the study is to evaluate the effects of the modified fixed TB on class 2 growing cases and to compare its effect to the conventional removable TB Research question Does the modified fixed twin block have the same effects as removable twin block during treatment of skeletal class 2 growing patients with mandibular deficiency? PICO P: Growing skeletal class 2 patients with deficient mandible I : Modified Fixed Twin block C: Conventional removable Twin block O : Primary outcome: Overjet Secondary outcome: Soft tissue Profile Antro-posterior mandibular position Mandibular length Antro-posterior maxillary position Upper and lower Incisors inclinations Durability of the appliance Patient Acceptance Hypothesis: There is no difference between the modified fixed or removable Twin block appliance regarding overjet reduction, dentoskeletal effects and patient perception. 8\. Trial design: Randomized Clinical Trial Parallel group, two arm, equivalent trial with 1:1 allocation ratio.
Interventions
DEVICEmodified Fixed twinblock
modified fixed twin block functional appliance, with cemented bands on the first molars
DEVICEremovable twin block
Conventional Removable Clark twin block myofunctional appliance
Sponsors
Cairo University
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
SINGLE (Outcomes Assessor)
Intervention model description
Randomized Clinical Trial Parallel group, two arm, equivalent trial with 1:1 allocation ratio.
Eligibility
Sex/Gender
FEMALE
Age
9 Years to 15 Years
Healthy volunteers
No
Inclusion criteria
* Skeletal Class 2 malocclusion cases (ANB ≥ 5 degrees) * Overjet ≥ 5 mm * Growing patients (CVMS 3 or 4)
Exclusion criteria
* Skeletally mature patients 15 years old or above * Patients with normal mandible and only protruded upper incisors. * Syndromic, cleft patients and patients with dental anomalies * Previous orthopaedic or orthodontic treatment * No sex predilection.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Over jet reduction | 9 months | the horizontal distance between upper and lower incisors |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Effective mandibular length | 9 months | distance from condylon to the Pogonion points |
| lower incisor inclination | 9 months | inclination of lower incisors on the mandibular plane |
Countries
Egypt
Outcome results
None listed