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Advanced lightwire functionals reduce orthodontic relapse factor

G H Smith¹, H Ashton

¹Luxembourg Medical/Dental Center, Langhorne, PA 19047, USA.

The Functional Orthodontist

|November 1, 1996

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Orthodontic dental arch expansion is unstable, with most patients experiencing relapse after treatment. Prolonged retention does not prevent this relapse, indicating issues with current techniques.

Area of Science:

Orthodontics
Craniofacial Biology
Dental Research

Background:

Past orthodontic research highlights the instability of dental arch dimensions following treatment.
Maxillary expansion techniques often overlook cranial base and bone distortions.
Relapse is a significant concern in long-term orthodontic outcomes.

Observation:

Schwarze's research indicates that orthodontically induced transverse sizes of dental arches are highly unstable.
A majority of patients exhibit a decrease in transverse molar and canine distance post-treatment.
Extended retention periods have been shown to be ineffective in preventing relapse.

Findings:

Orthodontic expansion and relapse studies reveal significant instability in transverse dental arch dimensions.

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Post-treatment follow-up examinations consistently show a reduction in molar and canine transverse distances.

The efficacy of prolonged retention in preventing relapse remains unproven.

Implications:

Current orthodontic approaches focusing solely on tooth movement and expansion may be insufficient.
Cranial base and bone distortions need consideration in orthodontic treatment planning.
Further research is needed to develop stable orthodontic correction methods.