Functional Relining Versus Digital Altered Cast Using Digitally Fabricated Distal Extension Frameworks

Launched by MANSOURA UNIVERSITY · Oct 8, 2023

Keywords

ClinConnect Summary

According to the functional impression techniques, all patients will be classified into two equal groups:

Group A: Functional relining of processed RPD base at insertion:

•After try in, a record base will be attached to the minor connectors and metal frameworks using 3D printed master cast.The finished removable partial denture is relined using the functional relining impression technique.

Group B : Digitally obtained altered cast :

Selective pressure impression technique will be made.

Digital altered cast will be done according to J. Wu, Y. Cheng (20) as follow :

All patients will be...

Gender

ALL

Eligibility criteria

• Inclusion Criteria:
• • 1. All patients having completely edentulous maxilla opposing class I Kennedy mandible.
• • 2. Sufficient restorative space must be available (from the mucosa covering the crest of the residual ridge to proposed occlusal plane). This will be detected by a tentative jaw relation.
• 3. Well formed residual ridge covered by healthy firm mucosa. 4. All patients are of angel's class I maxillo-mandibular relationships. 5. Abutment teeth must fulfil certain criteria:
• • 1. Abutment teeth should be healthy with good periodontal and bone support.
• • 2. Should not show a pronounced degree of mobility or advanced gingival recession.
• • 3. Crown Root Ratio of abutment teeth not more than 1:2
• Exclusion Criteria:
• • 1. Sever soft tissue undercuts. 2. Systemic diseases that may affect bone changes such as diabetes and osteoporosis.
• • 3. History of radiotherapy in the head and neck region.