NCT Number: NCT05637619
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.
Interested in participating?
Request Info18 year and older
All sexes
Observational
Lisbon, 1070-061, Portugal
Location status: Recruiting
Artur Simões
CONTACT
Artur Simões, Msc
PRINCIPAL_INVESTIGATOR
Duarte Marques, Phd
PRINCIPAL_INVESTIGATOR
João Caramês, Phd
PRINCIPAL_INVESTIGATOR
Marta Nuncio
CONTACT
Ricardo Pinto, Msc
PRINCIPAL_INVESTIGATOR
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.
Only the study team can determine whether someone qualifies for participation.
Dentate Group :
Inclusion criteria
Exclusion criteria
Edentulous Group:
Inclusion criteria
Exclusion criteria
Maxillary or/and mandibular screw retained zirconia monolithic prostheses supported by at least 4 implants
Maxillary or/and mandibular screw retained hybrid prostheses supported by at least 4 implants;
Dentate Patients with natural dentition or tooth supported crowns
Time frame: 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.
Time frame: 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.
Implantology Institute
Other
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View the official ClinicalTrials.gov record (opens in a new tab)This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.
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