Date of Award

Spring 1971

Document Type

Thesis - Restricted

Degree Name

Master of Science (MS)

Department

Dentistry

First Advisor

Sharma, Prem S.

Second Advisor

Brown, Russel V.

Third Advisor

Kittleson, Russel

Abstract

This investigation was undertaken to evaluate the effects of a removable, acrylic split-palate appliance, and a fixed Arnold appliance in attempting to achieve a gradual expansion of the palate in posterior cross-bite cases. Very little information is available as to the influence on the palate by these two types of appliances. Practically all current literature concerns itself with the fixed, rapid acting split-palate device which produces bodily lateral movement of the posterior teeth and supporting bony structures. Any discussion in the literature about the slower acting appliances for the correction of posterior cross-bite cases usually discounts these appliances as causing only tipping of the teeth with inevitable relapse. It is hoped that this study will help clarify the actions of the slower acting expansion appliances.

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