Dental Crowns, Dental Prosthesis, Prosthodontics
Conditions
Keywords
cad/cam, dental porcelain, zirconia, press on metal
Brief summary
The objective of this study was to compare the 5-year survival and clinical behavior of single posterior ceramic crowns made with pressable ceramic on zirconia or on a metal framework. If failures occurred, the further aim of the study was to delineate the factors contributing to the failure. The null hypothesis stated that the survival of zirconia-based restorations would be no worse that those made with metal-based material.
Interventions
DEVICEdental crowns
Sponsors
University of Bologna
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
18 Years to 70 Years
Healthy volunteers
No
Inclusion criteria
* Informed Consent as documented by signature * Male and female patients from 18-70 years of age * Need for a single crown restoration * Presence of antagonist * minimum of 20 teeth * moderate to good oral hygiene with the ability to perform mechanical oral hygiene techniques including tooth brushing * low to moderate caries risk, and no active periodontal disease.
Exclusion criteria
* Women who are pregnant at the date of inclusion * Known or suspected non-compliance, drug or alcohol abuse * Inability to follow the procedures of the study, e.g. due to language problems, psychological disorders, dementia, etc. of the participant * Smoking more than 15 cigarettes a day * Poor oral hygiene (Plaque Index over 30%) * Bruxism * vital teeth * allergic reaction or hypersensitivity to ingredients of the adhesive or restorative material
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Technical complication rate | 5 years | assessed by USPHS-criteria |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Survival rate | 1, 3, 5 years | assessed by bleeding on probing |
Countries
Italy
Outcome results
None listed