3D Assessment of Mandibular Bone Loss Via STL Superimposition After Complete Denture Occlusal Adjustment

NCT ID: NCT06562972

Last Updated: 2025-12-02

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: NA
• Total Enrollment: 20 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2024-08-18
• Study Completion Date: 2025-09-18

Brief Summary

STL registration-based superimposition is an advanced technique for assessing mandibular bone resorption in removable complete denture (RCD) patients. This 3D method involves aligning and comparing digital models of the mandible before and after RCD use, offering high accuracy and comprehensive analysis. The process includes 3D scanning, STL conversion, registration, superimposition, and quantification. Occlusal equilibration of RCDs plays a crucial role in distributing masticatory forces and influencing bone resorption patterns. Studies using this technique have revealed non-uniform resorption, with variations in different regions of the mandible. While offering numerous advantages over traditional methods, challenges include potential registration errors and the need for specialized equipment and expertise. Future developments may incorporate machine learning, biomechanical modeling, and long-term studies to enhance understanding and clinical application of this technology in prosthodontics and oral surgery.

Detailed Description

STL registration-based superimposition is an innovative technique for evaluating mandibular bone resorption in patients using removable complete dentures (RCDs). This 3D method aligns and compares digital mandible models from different time points, providing precise volumetric and surface change measurements. The process involves 3D scanning, STL file conversion, model registration, superimposition, and quantification.

Occlusal equilibration of RCDs is crucial for distributing masticatory forces evenly, influencing bone resorption patterns. Research using this technique has shown that mandibular bone resorption is non-uniform, with variations across different mandibular regions.

While offering superior accuracy and comprehensive analysis compared to traditional methods, this approach faces challenges such as potential registration errors and the need for specialized equipment and expertise. Future developments may incorporate machine learning, biomechanical modeling, and longitudinal studies to enhance understanding and clinical application in prosthodontics and oral surgery.

Conditions

Resorption of Mandible

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: TREATMENT
• Blinding Strategy: SINGLE

Study Groups

Occlusal equilibration using articulating paper

The articulating paper method is a widely used technique for occlusal equilibration of complete dentures. The process begins by seating the dentures properly and using thin articulating paper to mark occlusal contacts as the patient lightly bites down. High spots are identified by darker or larger marks and are carefully reduced with a fine diamond or acrylic bur. The process is repeated until even contact is achieved across all teeth. The method also involves checking occlusion during different jaw movements and making necessary adjustments. Finally, the adjusted areas are polished, and the patient's comfort is assessed.

Group Type: ACTIVE_COMPARATOR

Occlusal equilibration of complete denture using articulating paper

Intervention Type: OTHER

Occlusal equilibration of complete dentures is vital for ensuring proper function, comfort, and longevity. The process aims to evenly distribute occlusal forces, eliminate premature contacts, improve stability, reduce wear, and minimize tissue trauma. It involves methods like the articulating paper technique, pressure indicator paste, T-Scan digital analysis, and clinical observation. The process includes evaluating centric and eccentric contacts, making fine adjustments, and achieving balanced articulation. Regular follow-ups are essential to monitor occlusion and make necessary adjustments, contributing to patient satisfaction and denture lifespan.

Occlusal equilibration using Occulosense

The Oculosense system, is an advanced tool in dentistry for analyzing occlusion, especially in denture equilibration. It includes an ultra-thin sensor and software that records and displays the force and timing of occlusal contacts in real-time. This system provides detailed data on force distribution, contact timing, and the center of force, offering 2D and 3D visualizations. It allows for precise, dynamic adjustments of dentures by identifying high-pressure areas and premature contacts. Despite its benefits, including high precision and quantifiable data, it is costlier and requires specialized training.

Group Type: EXPERIMENTAL

Occlusal equilibration of complete denture using occulosense

Intervention Type: OTHER

Occulosense denture equilibration is a digital occlusal analysis technique used to optimize denture fit and function. It employs a thin sensor placed between the dentures to measure bite force and timing. The system provides real-time data on occlusal contacts, allowing dentists to identify and adjust pressure points precisely. This process ensures even distribution of bite forces, enhancing denture stability, comfort, and longevity. T-Scan equilibration can significantly improve patient satisfaction by reducing pain, increasing chewing efficiency, and minimizing denture-related issues like sore spots and uneven wear.

Interventions

Occlusal equilibration of complete denture using articulating paper

Occlusal equilibration of complete dentures is vital for ensuring proper function, comfort, and longevity. The process aims to evenly distribute occlusal forces, eliminate premature contacts, improve stability, reduce wear, and minimize tissue trauma. It involves methods like the articulating paper technique, pressure indicator paste, T-Scan digital analysis, and clinical observation. The process includes evaluating centric and eccentric contacts, making fine adjustments, and achieving balanced articulation. Regular follow-ups are essential to monitor occlusion and make necessary adjustments, contributing to patient satisfaction and denture lifespan.

Intervention Type: OTHER

Occlusal equilibration of complete denture using occulosense

Occulosense denture equilibration is a digital occlusal analysis technique used to optimize denture fit and function. It employs a thin sensor placed between the dentures to measure bite force and timing. The system provides real-time data on occlusal contacts, allowing dentists to identify and adjust pressure points precisely. This process ensures even distribution of bite forces, enhancing denture stability, comfort, and longevity. T-Scan equilibration can significantly improve patient satisfaction by reducing pain, increasing chewing efficiency, and minimizing denture-related issues like sore spots and uneven wear.

Intervention Type: OTHER

Eligibility Criteria

Inclusion Criteria

• Completely edentulous patients ranging from age 45 to 75 years
• Angle's Class I skeletal relationship
• Normal facial symmetry
• Cooperative patients
• Adequate inter-arch space not less than 12mm

Exclusion Criteria

• Temporomandibular disorders
• Uncontrolled diabetes
• Bleeding disorders or anticoagulant therapy
• Flabby tissues or sharp mandibular residual ridge.
• Heavy smokers.
• Patient's with neuromuscular disorders
• Patients on chemotherapy or radiotherapy
• Severe psychiatric disorders
• Angle's class II and III skeletal relationship

• Minimum Eligible Age: 45 Years
• Maximum Eligible Age: 75 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

Badr University

OTHER

Sponsor Role: lead

Responsible Party

Shady El Naggar

Associate Professor

Responsibility Role: PRINCIPAL_INVESTIGATOR

Principal Investigators

Shady Elnaggar

Role: PRINCIPAL_INVESTIGATOR

Badr university in Cairo

Locations

Badr university in Cairo

Cairo, , Egypt

Countries

Egypt

Other Identifiers

2024-2

Identifier Type: -

Identifier Source: org_study_id