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Maxillary traction splint: a cephalometric evaluation.

S F Caldwell, T A Hymas, T A Timm

American Journal of Orthodontics

|May 1, 1984

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Orthopedic headgear with a maxillary traction splint effectively corrects Class II malocclusions by reducing overjet and inhibiting maxillary vertical growth. This treatment is beneficial for growing patients before fixed appliance therapy.

Area of Science:

Orthodontics
Craniofacial Growth

Background:

Orthodontists seek to understand skeletal and dental changes from headgear treatment.
Dentoskeletal changes result from headgear, fixed appliances, and patient growth.

Purpose of the Study:

To quantify skeletal and dental changes in Class II, Division 1 malocclusions treated with orthopedic headgear and a maxillary occlusal splint.
To differentiate treatment effects from natural growth changes.

Main Methods:

Forty-seven patients with maxillary dentoalveolar protrusions and Class II, Division 1 malocclusions were treated.
A control group of fifty-two patients was used for growth comparison.
Lateral cephalograms were analyzed before and after treatment to quantify sagittal changes.

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Main Results:

Achieved Class I posterior occlusion with significant overjet reduction (average 4.24 mm).
Inhibited maxillary vertical growth and caused slight intrusion of maxillary teeth.
Reduced overbite by leveling the mandibular dentition without accelerating mandibular growth or significantly increasing the mandibular plane angle.

Conclusions:

The maxillary traction splint is effective for correcting maxillary dentoalveolar protrusion in growing patients.
This approach is a valuable precursor to fixed appliance therapy for detailed occlusion and tooth alignment.