Pages 504-509, Language: EnglishÖdman, Per / Andersson, BerntPurpose: This is a report on Procera AllCeram crowns in a prospective multicenter study.
The aim of the study was to evaluate AllCeram crowns in dental practice over a 5- to 10.5-
year period. Some of the AllCeram crowns were among the very first that were placed.
Materials and Methods: The crowns were placed between 1989 and 1995. Twelve
clinicians at nine clinics placed 87 crowns in 50 patients. The California Dental Association
quality evaluation system was used for assessment of marginal integrity and esthetics.
Results: After 5 and 10 years a cumulative survival rate of 97.7% and 93.5%, respectively,
and a cumulative success rate of 97.7% and 92.2%, respectively, was recorded. Six crowns
(7%) were recorded as failures; five of these crowns (6%) had to be remade. The marginal
integrity was considered excellent or acceptable for 92% of the crowns. Bleeding was
somewhat more often recorded at teeth with AllCeram crowns (39%) than at contralateral
teeth (27%). Endodontic treatment was performed for a low number (2%) of the AllCeram
crowns. The patients found the esthetics to be excellent.
Conclusion: The results of this
study demonstrate about the same clinical outcome as has been reported by similar studies
on all-ceramic crowns built on a core of alumina. The outcome is also in agreement with
that reported for metal-ceramic crowns. The results indicate a good prognosis for Procera
AllCeram crowns also for posterior teeth.