Three-year clinical performance of posterior monolithic zirconia single crowns Advertisement
Abstract
Statement of problem
Monolithic
zirconia has become widely used for single crowns, with the advantages
of minimal tooth reduction and good esthetics. However, clinical studies
evaluating the performance of and patient satisfaction with posterior
monolithic zirconia crowns are sparse.
Purpose
The
purpose of this clinical study was to evaluate the clinical performance
of and patient satisfaction with posterior monolithic zirconia crowns.
Material and methods
Within
a prospective cohort study design, participants were recruited from a
university dental clinic if they required 1 posterior monolithic
zirconia crown. The clinical performance was evaluated at follow-up
appointments 1, 2, and 3 years after insertion. Bleeding on probing and
pocket probing depths for the crowned teeth were recorded. Overall
patient satisfaction was measured by using a visual analog scale (VAS),
and quality of life was measured by using the validated German version
of the Oral Health Impact Profile 14 (OHIP-G14). Descriptive statistical
methods were applied. Mean values were calculated and compared by using
the paired t test (α=.05).
Results
Thirty
participants received a monolithic zirconia crown (14 premolars, 16
molars). One biologic complication (vertical root fracture) was
identified at the 1-year follow-up. Three years after insertion, 22
participants could be examined, and the crowns were still in function.
The gingival and the periodontal status of the crowned teeth had not
changed significantly over the 3 years. After insertion, a significant
improvement in patient satisfaction was measured up to 3 years
Conclusions
Posterior
monolithic zirconia crowns led to enhanced patient satisfaction up to 3
years after insertion. They provided good middle-term success and
offered a promising alternative to conventional metal-ceramic crowns.
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