Dental Prosthesis Complication, Wear, Occlusal, Wear, Tooth
Conditions
Keywords
Tooth wear, Full arch Implant, 3D scanner, Prosthesis, Screw retained, Zirconia, Hybrid Acrylic
Brief 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.
Interventions
DEVICEMonolithic Zirconia
Maxillary or/and mandibular screw retained zirconia monolithic prostheses supported by at least 4 implants
DEVICEHybrid-Acrylic
Maxillary or/and mandibular screw retained hybrid prostheses supported by at least 4 implants;
BEHAVIORALDentate Patients
Dentate Patients with natural dentition or tooth supported crowns
Sponsors
Implantology Institute
Study design
Observational model
CASE_CONTROL
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Inclusion criteria
Dentate Group : Inclusion criteria * fully dentate (with at least 10 teeth ) and do not have any tooth mobility; * at least 12months follow up
Exclusion criteria
\- missing more than 4 teeth, extensive caries, bonded orthodontic brackets Edentulous Group: Inclusion Criteria: * Maxilla or Mandible Implant full-mouth implant restoration * Monolithic ceramic or hybrid-acrylic restoration * at least12 months Follow-up
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Wear of teeth and materials of restorations | at least 12 months follow-up | Measure in different groups occlusal tooth wear from insertion (baseline) to 4, 8 and 12 months post-insertion Scanned images will be compared using a metrology software to determine maximum vertical wear of teeth and root mean square wear. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Wear of different antagonists | at least 12 months follow-up | Measure occlusal tooth wear of antagonists from insertion (baseline) to 4, 8 and 12 months post-insertion Scanned images will be compared using a metrology software to determine maximum vertical wear of teeth and root mean square wear. |
Countries
Portugal
Outcome results
None listed