Denture Retention of Intra-orally Scanned Versus Extra-orally Scanned Digitally Printed Maxillary Denture in Completely Edentulous Patients
NCT ID: NCT07290322
Last Updated: 2025-12-18
Study Results
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Basic Information
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ACTIVE_NOT_RECRUITING
NA
8 participants
INTERVENTIONAL
2024-12-03
2026-09-01
Brief Summary
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Participants will:
• Receive both types of dentures (intra-orally scanned and extra-orally scanned), with a three-week wash-out period between each intervention. The study aims to provide evidence on the optimal scanning method for digitally printed maxillary dentures in edentulous patients.
Detailed Description
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Study Design and Objectives This study involves eight completely edentulous participants who will receive both types of dentures-one set based on intra-oral scanning and another based on extra-oral scanning. A wash-out period of two weeks between the use of each denture ensures that the effects of one intervention do not influence the results of the other. The primary objective of this study are:
1\. To determine if intra-orally scanned dentures provide higher denture retention compared to extra-orally scanned dentures.
Study Methodology
Participants will undergo the following steps:
1. Scans and Fabrication:
* Intra-oral scanning will be performed using the 3Shape scanner to capture precise digital impressions of the oral cavity.
* For the extra-oral scanning, conventional impressions will first be taken, and these will be scanned externally using the same scanner to create digital models.
* Both types of digital models will be used to fabricate maxillary dentures using 3D printing technology.
2. Fitting and Wash-out Period:
* Participants will first use one type of denture (either intra-oral or extra-oral scanned) for a designated period.
* After a two-week wash-out period without wearing dentures, they will switch to the other type of denture.
3. Data Collection:
* After wearing each type of denture, participants will complete be exposed to The assessment of denture retention which involves measuring the force required to dislodge the denture in different directions .
Conditions
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Keywords
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Study Design
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NON_RANDOMIZED
CROSSOVER
TREATMENT
NONE
Study Groups
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Intra-Orally Scanned Dentures
Participants in this arm will recieve maxillary dentures fabricated using intraoral scanning technology . digital impressions of the oral cavity will be captured directly using the 3 shape trios intraoral scanner, eliminating the need for conventional impression materials , these digital impressions will be used to design and 3D print the dentures , which will then be fitted and evaluated for retention .
extraorally scanned methods
The extra-oral scanning method involves creating conventional impressions of the oral cavity using traditional impression materials. These impressions are then scanned externally using the 3Shape scanner to produce digital models. The digital models are used to design and fabricate maxillary dentures through 3D printing technology. This intervention aims to assess denture retention
Extra-Orally Scanned Dentures
Participants in this arm will recieve maxillary dentures fabricated using extraoral scanning technology . conventional impressions of the oral cavity will first be taken using traditional impression material , these impressions will then be scanned externally using the 3Shape scanner to create digital models . these digital models will be used to design and 3D print the dentures , which will then be fitted and evaluated for retention .
Intaorally scanned methods
the intraoral scanning method involves capturing digital impressions of the oral cavity directly using the 3 shape scanner . this method eliminates the need for traditional impression material providing a more comfortable and precise imaging process , the digital impressions are the utilized to design and fabricate maxillary dentures using 3D printing technology . the intervention focuses on evaluating denture's retention
Interventions
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Intaorally scanned methods
the intraoral scanning method involves capturing digital impressions of the oral cavity directly using the 3 shape scanner . this method eliminates the need for traditional impression material providing a more comfortable and precise imaging process , the digital impressions are the utilized to design and fabricate maxillary dentures using 3D printing technology . the intervention focuses on evaluating denture's retention
extraorally scanned methods
The extra-oral scanning method involves creating conventional impressions of the oral cavity using traditional impression materials. These impressions are then scanned externally using the 3Shape scanner to produce digital models. The digital models are used to design and fabricate maxillary dentures through 3D printing technology. This intervention aims to assess denture retention
Eligibility Criteria
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Inclusion Criteria
* Angle's class I Skeletal relationship
* normal facial symmetry
* comparative patients
Exclusion Criteria
* uncontrolled diabetes
* patients with neuromuscular disorders
* severe psychiatric disorders
* angle's class II and III skeletal relationship
ALL
Yes
Sponsors
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Cairo University
OTHER
Responsible Party
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Rehab Rabie Abdalla
Masters student
Principal Investigators
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Rehab R Abdalla
Role: PRINCIPAL_INVESTIGATOR
Cairo University
Locations
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Cairo university
Giza, , Egypt
Countries
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References
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1-Comparative Accuracy of Intraoral and Extraoral Digital Scanners by MA Mansoor et al., published in the Journal of Prosthetic Dentistry in 2024. 2.The Accuracy of Intraoral Scan in Obtaining Digital Impressions of Edentulous Jaws by Y Wang et al., published in the Journal of Prosthetic Dentistry in 2024. 3.Comparison of Intraoral and Extraoral Digital Scanners: Evaluation of Surface Topography and Precision, published on ResearchGate in 2020. 4.Effect of Different Scanning Protocols on the Retention of Complete Dentures by SM Fadl et al., published in the Egyptian Dental Journal in 2023.
Related Links
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This study, titled "Effect of Different Scanning Protocols on the Retention of Duplicated Maxillary Complete Dentures," investigates how various scanning techniques influence the retention and fit of maxillary complete dentures. It provides insights into
Other Identifiers
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21-12-2023
Identifier Type: -
Identifier Source: org_study_id