Retention of Complete Denture Using Rapid Prototyping

Retention of Complete Denture Using Rapid Prototyping Versus a Conventional Complete Denture: Cross Over Randomized Control Trial

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.

Study Overview

• Status: Unknown
• Conditions: Retention of 3D Printed Dentures
• Intervention / Treatment: Other: conventional dentures; Other: 3d printed denture

Detailed 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.

• Study Type: Interventional
• Enrollment (Anticipated): 2
• Phase: Not Applicable

Contacts and Locations

• Study Contact: Name: lina ismail, masters; Phone Number: 01092468850; Email: lina.net@hotmail.com

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 40 years to 70 years (Adult, Older Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

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. -

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Crossover Assignment
• Masking: Double

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Placebo Comparator: conventional dentures; a complete denture made through conventional processing technique	Other: conventional dentures; conventional dentures
Active Comparator: 3d printed dentures; a complete denture made through 3D printing	Other: 3d printed denture; construction of a 3d printed denture through a recent method instead of conventional processing

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
retention	We will Determine the geographic center for upper denture base to measure retention then A loop will be attached to each denture base at the position of geographic center using clear self cure acrylic resin and the retention will be measured by applying the forces perpendicular to the denture using Digital Force Meter Each base will be tested 3 times and the average will be calculated. Then the loop will be removed and the denture will finished and polish. Retention will be measured immediately after denture insertion.	immediately after denture construction

Collaborators and Investigators

• Sponsor: Cairo University

Study record dates

Study Major Dates

• Study Start (Anticipated): May 4, 2018
• Primary Completion (Anticipated): October 4, 2018
• Study Completion (Anticipated): November 4, 2018

Study Registration Dates

• First Submitted: April 2, 2018
• First Submitted That Met QC Criteria: April 14, 2018
• First Posted (Actual): April 24, 2018

Study Record Updates

• Last Update Posted (Actual): April 24, 2018
• Last Update Submitted That Met QC Criteria: April 14, 2018
• Last Verified: April 1, 2018

More Information

Terms related to this study

• Other Study ID Numbers: lina''s protocol

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: Undecided

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No
• product manufactured in and exported from the U.S.: No