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Functional regulator therapy for cleft palate patients

M P Kerr, C D Welch, R N Moore

American Journal of Orthodontics

|November 1, 1981

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The functional regulator (FR) did not significantly improve maxillary width or cross-bite in cleft palate patients. While appliance wear was good, the FR was not clinically useful for expanding collapsed segments in this population.

Area of Science:

Orthodontics
Craniofacial Anomalies
Speech Pathology

Background:

Cleft lip and palate (CLP) patients often present with maxillary hypoplasia and cross-bite.
These patients frequently experience speech, nasal, and lip defects, complicating orthodontic treatment.
Maxillary collapse is a common challenge in CLP patients requiring effective intervention.

Purpose of the Study:

To quantitatively evaluate the effectiveness of the functional regulator (FR) in treating maxillary collapse and cross-bite in CLP patients.
To assess the impact of the FR appliance on speech intelligibility in this patient group.
To determine the clinical utility of the FR for maxillary expansion in cleft palate cases.

Main Methods:

Orthodontic treatment using the functional regulator (FR) in nine cleft lip and palate children over 6 to 18 months.

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Main Results:

No statistically significant changes were observed in maxillary width or the cross-bite relationship.
Patient cooperation with the FR appliance was good, with an average daily wear time of 12.7 hours.
The functional regulator demonstrated limited clinical utility for primary maxillary segment expansion in this CLP sample.

Conclusions:

The functional regulator (FR) was not clinically effective for expanding collapsed maxillary segments in the studied cleft palate patients.
Good pre-treatment speech skills are crucial to mitigate potential negative effects of the FR on speech intelligibility.
Maximum speech improvement with the FR is achieved through consistent, full-time daily wear.