Clinical trial NCT05637619: Natural Dentition, Prosthesis and Antagonist Wear 3D Analysis
Official title: Natural Dentition, Prosthesis and Antagonist Wear 3D Analysis
Study type: OBSERVATIONAL
Overall status: RECRUITING
Conditions: Wear, Tooth
Dental Prosthesis Complication
Wear, Occlusal
Keywords: Tooth wear
Full arch Implant
3D scanner
Prosthesis
Screw retained
Zirconia
Hybrid Acrylic
Lead sponsor: Implantology Institute
Sponsor class: OTHER
First posted: 2022-12-05
Enrollment: 36
Sex: ALL
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Observational model: CASE_CONTROL
Time perspective: PROSPECTIVE
Sampling method: NON_PROBABILITY_SAMPLE
Study population: Control Group: Healthy Patients, Dentate

Experimental Groups : Patients from a dental office that did a full-mouth (maxilla or mandible) implant-supported rehabilitation and made the final rehabilitation in either monolithic zirconia or hybrid-acrylic material

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.

Eligibility 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

Exclusion Criteria:

* Heavy bruxists
* Patients that changed the full arch rehabilitation during the study (ex: framework fracture or lab reparation)

Primary outcomes:
measure: Wear of teeth and materials of restorations
timeFrame: at least 12 months follow-up
Secondary outcomes:
measure: Wear of different antagonists
timeFrame: at least 12 months follow-up
Other outcomes:
Locations:
city: Lisboa
country: Portugal
facility: Artur Simões
Study officials:
affiliation: Implantology Institute
name: João M Caramês, Phd
role: STUDY_DIRECTOR
affiliation: Implantology Institute
name: Duarte N Marques, Phd
role: STUDY_DIRECTOR
affiliation: Implantology Institute
name: Artur F Simões, Msc
role: PRINCIPAL_INVESTIGATOR
References: