Five-year clinical evaluation of Procera AllCeram crowns

Statement of problem. Esthetic demands of patients and practitioners for an all-ceramic crown in both anterior and posterior regions of the dental arches has prompted the development of the Procera AllCeram crown. Long-term clinical trials that evaluate the strength and naturalness of the Procera Al...

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Bibliographic Details
Published in:	The Journal of prosthetic dentistry Vol. 80; no. 4; pp. 450 - 456
Main Authors:	Odén, Agneta, Andersson, Matts, Krystek-Ondracek, Ivana, Magnusson, Dagmar
Format:	Journal Article
Language:	English
Published:	United States Mosby, Inc 01-10-1998
Subjects:	Aluminum Oxide - chemistry Cementation Color Crowns Dental Caries - etiology Dental Porcelain - chemistry Dental Prosthesis Design Dental Restoration Failure Dental Veneers Dentistry Esthetics, Dental Evaluation Studies as Topic Female Follow-Up Studies Glass Ionomer Cements - chemistry Humans Male Medicin och hälsovetenskap Prospective Studies Resin Cements - chemistry Surface Properties Zinc Phosphate Cement - chemistry
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Summary:	Statement of problem. Esthetic demands of patients and practitioners for an all-ceramic crown in both anterior and posterior regions of the dental arches has prompted the development of the Procera AllCeram crown. Long-term clinical trials that evaluate the strength and naturalness of the Procera AllCeram crown are lacking. Purpose. This prospective study was initiated to evaluate the clinical performance of 100 Procera AllCeram crowns after 5 years in service. Material and methods. One hundred Procera AllCeram crowns were fabricated for 58 patients (20 men and 38 women). Patients were treated by 4 general dental practitioners. Crown placement involved both the anterior and posterior regions of the dental arches. Crowns were examined at baseline and once a year during the 5 years that followed and evaluated at each appointment with the California Dental Association’s quality assessment system. Results. Of the 97 crowns remaining in the study after 5 years, only 3 crowns had experienced a fracture through the veneering porcelain and the aluminum oxide coping material. Two additional crowns were replaced as a result of fractures of only the veneering porcelain. One crown was replaced as a result of recurrent caries. All remaining crowns were ranked as either excellent or acceptable for surface/color, anatomic form, and marginal integrity. Conclusion. The 5-year clinical observations and ranking with the California Dental Association’s quality assessment criteria supported the conclusion that Procera AllCeram crowns may be used in all areas of the mouth. (J Prosthet Dent 1998;80:450-6.)
Bibliography:	ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 ObjectType-Article-1 ObjectType-Feature-2
ISSN:	0022-3913 1097-6841
DOI:	10.1016/S0022-3913(98)70010-1