Conventional Versus 3D Printing Duplication Techniques of Complete Denture

Ain Shams University

Status: Completed

Conditions: Edentulous Alveolar Ridge; Denture,Complete

Treatments: Device: Duplicated refitted complete denture made from conventionally heat-cured polymethyl methacrylate.; Device: Duplicated refitted complete denture made from 3D-printed CAD/CAM white polymethylmethacrylate acrylic resin.; Device: Duplicated refitted complete denture made from 3D-printed CAD/CAM pink polymethylmethacrylate acrylic resin.

Study type: Interventional

Funder types: Other

Identifiers

NCT06588140

FDASU-Rec IR032421

Details and patient eligibility

About

Twenty completely edentulous patients with old, removable dentures with ill-fitting maxillary dentures, proper vertical dimension, and proper occlusion will be recruited for this trial. They will be rehabilitated with duplicated complete dentures manufactured by conventional and two different 3D-printed CAD-CAM Complete Removable Dentures techniques.

Outcomes will be evaluated, including denture retention, which will be evaluated using a digital force gauge, and occlusal force distribution by using a t-scan.

Full description

The study will be conducted at the outpatient clinic of the Oral and Maxillofacial Prosthodontics Department, Faculty of Dentistry, Ain Shams University. This within-subject controlled clinical trial will involve twenty completely edentulous patients with old, ill-fitting maxillary complete dentures, who will be selected and recruited following approval by the Research Ethics Committee of the Faculty of Dentistry, Ain Shams University (FDASU-REC). These patients will be rehabilitated with duplicated complete dentures produced through conventional methods and two distinct 3D-printed CAD/CAM techniques.

Group I: The duplication of a refitted complete removable denture will be performed using the conventional heat-cured technique.

Group II: The refitted complete denture will be duplicated using a 3D-printed CAD/CAM technique, where the denture base will be printed separately with pink resin, and the teeth will be printed as a single unit in tooth-colored resin, followed by assembly of the two components.

Group III: The refitted complete denture will be duplicated using a 3D-printed CAD/CAM technique, with the entire denture printed as a single unit in tooth-colored resin, and the denture flange veneered with pink resin.

Outcomes will be evaluated by measuring denture retention with a digital force gauge and occlusal force distribution using the T-Scan system. The collected data will be recorded, tabulated, and subjected to statistical analysis using appropriate tests for group comparisons.

Enrollment: 20 patients

Sex: All

Ages: 50 to 65 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

1. Patients with old complete dentures without lost vertical dimension.
2. Patients with correct centric occluding relation.
3. The dentures should be esthetically and functionally satisfactory and exhibit reasonable retention and stability

Exclusion criteria

1. The presence of ridge or soft tissue pathology.
2. Diminished saliva production.
3. A history of medications affecting saliva quantity or quality.
4. Patients with temporomandibular joint problems.
5. The presence of sever ridge undercut.
6. Debilitated patients

Trial design

Primary purpose: Other

Allocation: Randomized

Interventional model: Crossover Assignment

Masking: Single Blind

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20 participants in 3 patient groups

conventional heat-cured duplication technique.

Active Comparator group

Description:

Duplication of refitted complete removable dentures by conventional heat-cured technique from heat-cured polymethyl methacrylate resin.

Treatment:

Device: Duplicated refitted complete denture made from conventionally heat-cured polymethyl methacrylate.

3d Printed CAD/CAM duplication technique from Pink polymethyl methacrylate base resin

Experimental group

Description:

Duplication of a refitted complete removable denture will be produced using a 3D-printed CAD/CAM technique where the denture base will be printed separately using pink base polymethyl methacrylate resin, and the teeth will be printed as one unit using tooth-colored resin, followed by assembling the two components.

Treatment:

Device: Duplicated refitted complete denture made from 3D-printed CAD/CAM pink polymethylmethacrylate acrylic resin.

3d Printed CAD/CAM duplication technique from white polymethyl methacrylate base resin

Experimental group

Description:

Duplication of a refitted complete removable denture will be produced using a 3D-printed CAD/CAM technique where the denture will be printed as a single unit using tooth-colored resin, and the denture flange will be veneered with pink resin.

Treatment:

Device: Duplicated refitted complete denture made from 3D-printed CAD/CAM white polymethylmethacrylate acrylic resin.