At a glance
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An In-vivo Study to Evaluate Three Methods of Managing the Distribution of Loading Forces in Mandibular Distal-extension Prostheses (Class I Kennedy's Classification)
In Brief
A clinical study evaluating Altered cast technique, Precision Attachments, and 1 other intervention for Mandibular Distal-extension Prostheses. Completed, enrolled 30 participants across 1 site.
Detailed Summary
The two structures that support a mandibular distal extension removable partial denture differ markedly in their visco-elastic response to loading. The difference between the resilience of the residual ridge tissues and the teeth permitted by the periodontal ligament presents a disparity of support that is in contrast to the uniform support accorded a tooth-supported removable partial denture. Hence the denture tends to rotate about its most distal abutments, inducing heavy torsional stresses on alveolar ridges. Many methods have been used to control this movement, some of them: 1. Implant support on distal extension removable. 2. Stress breakers provide a mean of interposing a flexible connection between the tooth-borne retainer portion of removable partial denture and its distally extended tissue-borne segment. 3. Altered-cast technique. 4. Design development by using mesial indirect retainers rather than distal ones. The purpose of this study is: (1) to compare bone absorption around abutment teeth nearby the free saddle; (2) denture displacement and pressure on the soft tissue under the denture base of distal extension RPD (Removable Partial Denture) (3) cellular changes in the soft tissue under the denture base of distal extension RPD.
Study Details
Timeline
Interventions
This techniques deals with the procedures that are employed when constructing the removable partial denture on working casts.
These are minor attachments used to split the loading forces during appliance wear
This is a layer beneath the appliance which helps in reducing the transmission of loading forces to the underlying soft tissues