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Conventional Versus Neutral-Zone CAD/CAM Dentures Restoring Mandibular Resorbed Ridges

Sponsor
Ain Shams University (Other)
Overall Status
Recruiting
CT.gov ID
NCT05895292
Collaborator
(none)
12
Enrollment
1
Location
2
Arms
10.1
Anticipated Duration (Months)
1.2
Patients Per Site Per Month

Study Details

Study Description

Brief Summary

The study is a within-subject randomized clinical trial that will compare and evaluate patients' satisfaction and digitally analyze denture space Confines. Group I: CAD/CAM. (computer-aided design/computer-aided manufacturing) Conventional complete dentures will be designed based on the bone support concept, Group II: CAD/CAM neutral zone complete dentures will be designed based on the neutral zone concept. The participants will be selected according to inclusion and exclusion criteria and will be randomly allocated into both groups and then shuffled to the other group using the Research Randomizer Program.

Condition or Disease Intervention/Treatment Phase
  • Device: CAD/CAM Milled Methacrylate Complete Removable Dentures based on bone-support concept.
  • Device: CAD/CAM Milled Methacrylate Complete Removable Dentures based on neutral zone concept.
 N/A

Detailed Description

This study is designed as a randomized clinical trial applying a within-subject comparison of two different complete denture types as follows; group I: CAD/CAM conventional complete dentures will be designed based on the bone support concept, group II: CAD/CAM neutral zone complete dentures will be designed based on the neutral zone concept. The study will be carried out on twelve completely edentulous patients exhibiting advanced residual ridge resorption, each patient will receive two sets of complete dentures in a random sequence, and each set of CDs will be worn for at least eight weeks after the last recall visit before assessments. Upon delivery of the second set of CDs, the first set will be withheld from the patient. For each denture set, patient satisfaction will be rated using a patient denture assessment PDA questionnaire that will be assessed via a Likert scale, the obtained scores will be used to compare the two denture types. Also by using special digital software, a comparison between group I and II virtual complete denture images will be conducted.

Study Design

Study Type:
Interventional
Anticipated Enrollment :
12 participants
Allocation:
Randomized
Intervention Model:
Crossover Assignment
Masking:
Triple (Participant, Care Provider, Investigator)
Masking Description:
Twelve patients will be randomly assigned to one of two groups (I or II) by a practitioner who will not be involved in patient selection or treatment but will be aware of the randomization sequence and have access to the randomization lists. This will be stored on a password-protected laptop, and the randomly generated codes will be placed in sequentially ordered, opaque, and sealed envelopes using a research randomizer (https://www.randomizer.org/). Participants were randomized to first receiving either Conventional CAD/CAM manufactured complete removable dentures Based on bone support concept or CAD/CAM neutral zone complete dentures will be designed based on the neutral zone concept and then after 3 months cross over to the other set. Patients and clinical practitioners are blinded to the type of prostheses at all study times.
Primary Purpose:
Treatment
Official Title:
Digital Analysis of Denture Space Confines and Patient's Satisfaction for Conventional Versus Neutral-Zone CAD/CAM Dentures Restoring Mandibular Resorbed Ridges.(Randomized Controlled Clinical Trial)
Actual Study Start Date :
Apr 1, 2023
Anticipated Primary Completion Date :
Nov 1, 2023
Anticipated Study Completion Date :
Feb 1, 2024

Arms and Interventions

Arm Intervention/Treatment
Experimental: CAD/CAM Milled Methacrylate Complete Removable Dentures based on bone-support concept.

The patient will be provided by a complete removable denture designed according to bone-support concept to restore his missing teeth which will be manufactured by CAD/CAM milling of monolithic methacrylate blanks.

Device: CAD/CAM Milled Methacrylate Complete Removable Dentures based on bone-support concept.
The patients will receive complete removable dentures designed based on the bone-support concept and digitally manufactured using a milling machine.
Active Comparator: CAD/CAM Milled Methacrylate Complete Removable Dentures based on neutral zone concept.

The patient will be provided with a complete removable denture designed according to the neutral-concept to restore his missing teeth, which will be manufactured by CAD/CAM milling of monolithic methacrylate blanks.

Device: CAD/CAM Milled Methacrylate Complete Removable Dentures based on neutral zone concept.
The patients will receive complete removable dentures designed based on the neutral-zone concept and digitally manufactured using a milling machine

Outcome Measures

Primary Outcome Measures

  1. Digital Analysis and Comparison of Denture Space Confines for CAD/CAM Dentures Based on the bone-support concept Versus based on the neutral-zone concept Restoring Mandibular Resorbed Ridges using "Medit compare" digital software. [before manufacturing of complete removable denture]

    comparing the position of the neutral zone to the software-designed anatomical denture confines using "Medit compare" digital software (Medit design, Medit Compare (V1.2), Seoul, South Korea). Average values of facio-lingual deviations between the two dentures in the premolar and molar regions, as well as the anterior region, will be calculated in millimeters, yielding five measurements for each patient's denture sets. Color maps for dimensional deviations of the overall as well as specified surfaces for both dentures revealing the qualitative 3D differences between them will be obtained. Measuring procedures will be similar, as recommended by the manufacturer and all will be performed by the same digital professional operator.

Secondary Outcome Measures

  1. Evaluation of patients' satisfaction with both types of the Complete Removable Dentures [three months]

    Evaluation of patients' satisfaction with both types of the Complete Removable Dentures by using Patient's Denture Assessment questionnaire (PDA) and interpreting it by using Likert scale (higher score (scale no.5) indicates good outcome and lower score (scale no.1)indicates bad outcome)

Eligibility Criteria

Criteria

Ages Eligible for Study:
50 Years to 80 Years
Sexes Eligible for Study:
All
Accepts Healthy Volunteers:
Yes
Inclusion Criteria:

  1. Patients who have been completely edentulous in both jaws (maxilla and mandible) for a long period.

  2. The age of patients ranges from 50 to 80 years old.

  3. Patients with a resorbed mandibular ridge.

  4. Patients with a Class I maxillo-mandibular relationship

  5. Patients with adequate inter-arch space.

  6. Patients with good neuromuscular control.

  7. Patients without any tempo-mandibular disorder.

Exclusion Criteria:

  1. Patients with any oral diseases that may affect complete denture construction

  2. Patients with bad oral hygiene.

  3. Patients with oral parafunctional habits.

  4. Hysterical patients.

  5. Patients will undergo or have previously received chemotherapy or radiotherapy.

  6. Drug-addicted patients.

Contacts and Locations

Locations

Site City State Country Postal Code
1 Faculty of Dentistry, Ain shams University Cairo Nasr City Egypt 11566

Sponsors and Collaborators

  • Ain Shams University

Investigators

None specified.

Study Documents (Full-Text)

None provided.

More Information

Publications

Responsible Party:
Omnia M Refai, Lecturer of Oral and Maxillofacial Prosthodontics,faculty of dentistry , Ain Shams university, Ain Shams University
ClinicalTrials.gov Identifier:
NCT05895292
Other Study ID Numbers:
  • FDASU-RecIR012316
First Posted:
Jun 8, 2023
Last Update Posted:
Jun 15, 2023
Last Verified:
Jun 1, 2023
Studies a U.S. FDA-regulated Drug Product:
No
Studies a U.S. FDA-regulated Device Product:
No
Keywords provided by Omnia M Refai, Lecturer of Oral and Maxillofacial Prosthodontics,faculty of dentistry , Ain Shams university, Ain Shams University
CAD/CAM
Denture, Complete
Patient Satisfaction
Dental Impression Technique

Study Results

No Results Posted as of Jun 15, 2023