Evaluation of Three-Dimensional Printed Orthodontic Molar Distalizer

Evaluation of Three-Dimensional Printed Orthodontic Molar Distalizer (Randomized Clinical Trial)

A randomized clinical trial to evaluate a newly designed 3D printed miniscrew-supported molar distalization device in comparison to the conventional miniscrew-supported distal jet appliance in correction of Class II malocclusion and upper arch crowding.

It is a multicenter randomized clinical trial with two parallel arms. The patients will be randomly divided into two groups, group one: conventional miniscrew-supported distal jet appliance will be used while for group two, new 3D printed miniscrew-supported molar distalizers is going to be utilized. Lateral cephalometric x-ray and digital models of upper arch will be taken before starting the treatment (T0) and at the end of molar distalization (T1). The effectiveness of the two appliances will be assessed and measured comparing patient's records before and after treatment.

Inclusion Criteria:

1. Class II molar relationships bilaterally, with fully erupted 2nd molar.

2. No or minor crowding on the mandible to [reserve Class I posterior occlusion after treatment.

3. Good oral health free from caries and periodontal problems at the start of treatment.

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Exclusion Criteria:

1. Previous history of orthopedic and/or orthodontic treatment.
2. Patients with cleft lip and palate and/or craniofacial syndrome
3. Patients with bad oral habit.
4. Active periodontal disease.
5. Sever rotation of maxillary molars. -