NCT05637619

Natural Dentition, Prosthesis and Antagonist Wear 3D Analysis

• Status: Recruiting
• Phase: —
• Study type: Observational
• Enrollment: 36 (estimated)
• Sponsor: Implantology Institute · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: —

Summary

Wear resistance is one of the most important physical properties of teeth, and wear resistance of zirconia against artificial acrylic, enamel and composite resin denture teeth has not been clearly established. Implant-supported dental restorations present a higher threshold for occlusion perception when compared to natural teeth, which can occlusal overload mechanisms or lead to wear of rehabilitation materials or the antagonist arch. In clinical conditions, however, many other factors influence the complex interaction between dental enamel and opposing substrates: patient-related factors such as dietary habits, dysfunctional occlusion, masticatory forces, and bruxism contribute to accelerated enamel loss of antagonist teeth.

Detailed description

It will be our intention to perform a prospective study and proof-of-concept to assess wear in natural dentition, Full arch implant supported rehabilitation (FAISR) and opposing arches. Wear according to type of rehabilitation and of opposing arch, technical complications, parafunction and number of placed implants will be assessed. Intra-oral digital acquisition will be performed at pre-defined intervals. Changes over time will be assessed through a previously described digital superimposition methodology volumetric changes determined. Patients will be scanned using an intraoral dental scanner (T0) Patients will be recalled at every 4-months (T1), 8-months (T2) and 12-months (T3) visits for re-scanning and from there every 6-months Scanned images will be compared using a metrology software to determine maximum vertical wear of teeth and root mean square wear.

Conditions

• Wear, Tooth
• Dental Prosthesis Complication
• Wear, Occlusal

Interventions

Type	Name	Description
DEVICE	Monolithic Zirconia	Maxillary or/and mandibular screw retained zirconia monolithic prostheses supported by at least 4 implants
DEVICE	Hybrid-Acrylic	Maxillary or/and mandibular screw retained hybrid prostheses supported by at least 4 implants;
BEHAVIORAL	Dentate Patients	Dentate Patients with natural dentition or tooth supported crowns

Timeline

• Start date: 2022-01-01
• Primary completion: 2024-08-01
• Completion: 2024-12-01
• First posted: 2022-12-05
• Last updated: 2024-07-26

Locations

1 site across 1 country: Portugal