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RecruitingNot ApplicableNCT05950581

Treatment of Skeletal Class II Malocclusion With Modified Twin-Block Appliance With Clear Plates

Treatment Skeletal Class II Malocclusion With Modified Twin-Block Appliance With Clear Plates VS Traditional Twin Block

Sponsor

Hama University

Enrollment

32 participants

Start Date

Mar 15, 2026

Study Type

INTERVENTIONAL

Conditions

Malocclusion, Angle Class II

Summary

Patients with skeletal class II malocclusion who have a retracted lower jaw will be treated in this study. The efficacy of clear Plates in the treatment of Skeletal Class II Malocclusion will be assessed. The skeletal, dental and soft tissues changes resulted by this intervention will be studied and compared with the results of Traditional treatment with fixed appliances.

Eligibility

Min Age: 10 YearsMax Age: 13 Years

Inclusion Criteria6

  • \- Patients with mixed dentition at age 10.5-13 years.
  • The patient has Skeletal class II malocclusion caused by mandibular retraction ANB \> 5, 8 mm \>O.J\> 5 mm, SNB\<78, angle (NSAr) ≥ ° 125 and normal placement of the upper jaw.
  • The patient is willing to accept treatment with a removable device.
  • No previous orthodontic treatment
  • the growth model is within the normal or horizontal maxillary opening angle of 30 \>MM or angle of 400 \> Björk
  • patients do not have an upper alveolar dental protrusion.

Exclusion Criteria8

  • Patients with periodontal disease.
  • patients with a neuromuscular disorder.
  • patients of class I or III of malocclusion.
  • Patients with temporomandibular joint disorder.
  • Patients with Skeletal open bite.
  • Patients with poor oral and gingival health
  • the presence of a unilateral or bilateral posterior crossbite.
  • patients who have upper jaw stenosis and need to be prepared by expansion before functional treatment.
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Interventions

DEVICEModified Twin-Block Appliance with Clear Plates.

Clear plates technique A group of patients in which participants will be undergo to clear plates treatment will be applied to the upper and lower arch 17 hours daily

DEVICETraditional Twin-Block appliance

Traditional Twin-Block appliance A group of patients in which participants will undergo to the Traditional Twin-Block appliance Treatment, appliances will be applied to the upper and lower arch 17 hours daily

Locations(1)

Hama University

Hama, Syria

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NCT05950581