An interventional study of Removable partial denture in Dental Prosthesis Complication, sponsored by Mansoura University. Status unknown at 1 site in Egypt. Open to participants aged 40 Years to 70 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2023-10-13.
Sponsored by Mansoura University · Not applicable, Interventional, and Treatment
This clinical study will be done to compare between functional relining and digital altered cast of selective pressure impression techniques for constructing mandibular distal extension removable partial dentures using digitally fabricated frameworks by measuring the abutment alveolar bone height changes.
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 informed about the follow up and evaluation recalls.
Evaluation of abutment alveolar bone height changes:
Alveolar bone height changes of abutment teeth will be evaluated radiographically at insertion (T0), and after 6 (T6) \& 12 months (T12) after RPD insertion.
Mansoura University is the lead sponsor of 1,115 studies on the registry; 184 are open to participants now.
Of its 9 completed or terminated interventional studies of FDA-regulated products, 0 (0%) have results posted.
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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:
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.
* After try in, a record base will be attached to the minor connectors and metal frameworks using 3D printed master cast. * Registration of jaw relation. * Mounting of master casts on articulator. * Setting of artificial teeth according to lingualized occlusion principles. * Try in of RPD. * Flasking of RPD to obtain mandibular distal extension removable partial dentures. * The finished removable partial denture is relined using the functional relining impression technique.
Procedure: Removable partial denture
1. Construction of custom tray on metal frame work. 2. Border molding of custom tray. 3. Selective pressure impression technique will be made. 4. Digital altered cast will be done according to J. Wu, Y. Cheng 5. 3D printing of altered master cast that will be used for completing the construction of RPD with the same steps of group (A) but without relining. * Finally the occlusion of dentures in the two groups will be verified before delivery.
Procedure: Removable partial denture
All patients will receive Removable partial denture by two different impression techniques
abutment alveolar bone loss
Alveolar b(one height changes of abutment teeth will be evaluated radiographically at insertion and after one year
Time frame: Two year
Plan to share: No
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This study is status unknown, as verified in Oct 2023. You cannot join it, but the record below documents what was studied.
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