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Management of Loading Forces Distribution in Mandibular Distal-extension Prostheses

NCT02178384 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 30

Last updated 2015-10-05

No results posted yet for this study

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.

Conditions

  • Mandibular Distal-extension Prostheses

Interventions

PROCEDURE

Altered cast technique

This techniques deals with the procedures that are employed when constructing the removable partial denture on working casts.

DEVICE

Precision Attachments

These are minor attachments used to split the loading forces during appliance wear

PROCEDURE

Resilient layer

This is a layer beneath the appliance which helps in reducing the transmission of loading forces to the underlying soft tissues

Sponsors & Collaborators

  • Damascus University

    lead OTHER

Principal Investigators

  • Fadi Alhaji Jnaid, DDS MSc · PhD student, Department of Removable Prosthodontics, University of Damascus Dental School, Damascus

  • Alaa' Salloum, DDS MSc PhD · Senior Lecturer, Removable Prosthodontics Department, University of Damascus Dental School, Damascus

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Model
PARALLEL

Eligibility

Min Age
35 Years
Max Age
75 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2014-06-30
Primary Completion
2015-07-31
Completion
2015-10-31

Countries

  • Syria

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT02178384 on ClinicalTrials.gov