"Patient Satisfaction with Intra-Oral Vs. Extra-Oral Scanned 3D-Printed Dentures: an in Vivo Study"

The goal of this clinical trial is to evaluate and compare patient satisfaction with intra-orally scanned and extra-orally scanned digitally printed maxillary dentures in completely edentulous patients. This in vivo study seeks to provide insights into how the scanning method impacts the comfort, fit, and aesthetics of maxillary dentures, ultimately guiding clinicians in choosing the most patient-preferred approach.

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 objectives of this study are:

• To determine if intra-orally scanned dentures provide higher patient satisfaction compared to extra-orally scanned dentures.
• To assess specific satisfaction factors, including comfort, fit, and aesthetic appearance, for both denture types.

Study Methodology

Participants will undergo the following steps:

• 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.
• 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.
• Data Collection:

• After wearing each type of denture, participants will complete structured satisfaction questionnaire focusing on key parameters: comfort during daily use, overall fit, and aesthetic appeal.

Data Analysis

The study will compare satisfaction scores and qualitative responses between the two scanning methods. Statistical analyses will be conducted to identify significant differences in patient-reported outcomes.

Expected Impact

This study aims to provide clinicians with evidence-based guidance on whether intra-oral or extra-oral scanning results in better patient satisfaction for digitally printed maxillary dentures. By focusing on the user experience, this research contributes to improving prosthodontic care for completely edentulous patients.

Inclusion criteria

• Completely edentulous patients
• Angle's Class I skeletal relationship
• Normal facial symmetry
• Cooperative patients

Exclusion criteria

• -Temporomandibular disorders
• Uncontrolled diabetes
• Patient's with neuromuscular disorders
• Severe psychiatric disorders
• Angle's class II and III skeletal relationship.