Retention of Complete Denture Using Rapid Prototyping

Cairo University (CU)

Status: Unknown

Conditions: Retention of 3D Printed Dentures

Treatments: Other: conventional dentures; Other: 3d printed denture

Study type: Interventional

Funder types: Other

Identifiers

NCT03507179

lina''s protocol

Details and patient eligibility

About

Nineteen patients will be selected from the clinic following the inclusion and exclusion criteria. Each one of them will receive two dentures. The first denture will be a conventional complete denture while the second denture will be a complete denture made by Rapid prototyping method.

For both groups, a preliminary impression will be made & after pouring the primary impression, self-cured acrylic resin trial denture bases with a wax rim will be constructed on the primary casts for the upper & lower arches for a jaw relation record. A facebow record will be used to mount the upper cast, while the lower cast will be mounted using a centric relation record. Setting of artificial teeth will be performed, then the denture will be tried in patient's mouth. Functional impression will be taken during the try in stage which.

For the first denture, the functional impression will be poured in normal way to obtain the master cast. Then Processing will be done in normal way and the denture will be finished and polished and delivered to the patient.

But for the second denture construction CBCT scanning of the try in with the functional impression will be done to obtain STL file then denture base manufacturing will be done by 3D printing.

For group A and group B Retention will be measured for the upper denture immediately, with a wash out period one month between the two dentures.

Full description

Heat processed denture base is the treatment of choice for most of edentulous patients and it is considered as the golden standard and the main comparator for the new techniques. But using Heat Cured Acrylic resin would require many laboratory steps which introduce several errors . Meanwhile, the introduction of rapid prototyping method with high accuracy which eliminates some of the laboratory steps was the reason for choosing it to compare it with the conventional method.

Enrollment: 2 estimated patients

Sex: All

Ages: 40 to 70 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

1. Age ranging from 40-70 years.
2. Cooperative patients.
3. male or female patients

Exclusion criteria

1. Pathological changes of residual ridges.
2. Patients with any systemic diseases.
3. Patients with xerostomia.
4. Patients with flabby and flat ridges.
5. Patients with allergy to resins.
6. Patient with sever undercuts, or irregular bony exostosis. -

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Crossover Assignment

Masking: Double Blind

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2 participants in 2 patient groups, including a placebo group

conventional dentures

Placebo Comparator group

Description:

a complete denture made through conventional processing technique

Treatment:

Other: conventional dentures

3d printed dentures

Active Comparator group

Description:

a complete denture made through 3D printing

Treatment:

Other: 3d printed denture