About this trial
This investigation will be a randomized, prospective, longitudinal clinical trial to study the clinical performance of a new monolithic, zirconia material with shade, translucency and material graduation for chairside CAD/CAM crowns. The restorations will be luted either with a self-adhesive luting material or a conventional cement. The crowns will be evaluated for a period of two years.
Eligibility criteria
Qualifiers
at least 18 years of age
at least one carious lesion, defective restoration, or fractured portion of the tooth to be restored on a maxillary or mandibular premolar or molar tooth - Each lesion, fracture, or defective restoration should exhibit sufficient size or loss of tooth structure requiring a full crown restoration.
tooth should have at least one opposing tooth in occlusion and one adjacent tooth with an intact proximal contact
No more than ten teeth that are endodontically treated may be included in the study, equally divided between the two groups of crowns. All remaining teeth in the study will test vital and be asymptomatic at the beginning of treatment.
Disqualifiers
Sensitive teeth
Teeth with a history of direct or indirect pulp capping procedures
Patients with significant untreated dental disease to include periodontitis and/or rampant caries
Women who self-report that they are possibly pregnant, pregnant, or lactating, as elective dental treatment is not indicated at these times
Trial design
Treatments tested in this trial
- Crowns self-adhesively luted
- Crowns conventionally cemented
Treatment groups
Sponsors and collaborators
Ivoclar Vivadent AG
Lead sponsor
University of Michigan
Collaborator