title: Clinical evaluation of Procera AllCeram crowns in Japanese patients: results after 5 years.
abstract: Procera AllCeram crowns were prospectively evaluated clinically in both anterior and posterior regions in Japanese. One-hundred and one crowns were fabricated for 57 patients at the Tsurumi University Dental Hospital from August 2001 to October 2002 and evaluated according to the California Dental Association (CDA) quality evaluation system at baseline and annually at all follow-up examinations for 5 years. The plaque index (PI) and gingival index (GI) were recorded, and chipping and fracture were checked at the same time as well. A total of 75 Procera AllCeram crowns were evaluated, and the cumulative survival rate was 90.2% over the 5-year clinical trial. Six crowns experienced fractures within the veneering porcelain and from aluminium oxide coping, all of which occurred on the premolar and molar regions, and they had to be removed. Small chipping was observed on three crowns. According to the CDA criteria, 98% of Procera AllCeram crowns were rated as satisfactory, and PI and GI were comparable to those of control teeth during the observation period.
authors.affiliation: Division of Oral and Maxillofacial Implantology, Department of Fixed Prosthodontics, Tsurumi University School of Dental Medicine, 2-1-3 Tsurumi, Tsurumi-ku, Yokohama City 230-8501, Japan. kokubo-y@tsurumi-u.ac.jp
authors.forename: Y
authors.initials: Y
authors.lastname: Kokubo
authors.forename: S
authors.initials: S
authors.lastname: Sakurai
authors.forename: M
authors.initials: M
authors.lastname: Tsumita
authors.forename: T
authors.initials: T
authors.lastname: Ogawa
authors.forename: S
authors.initials: S
authors.lastname: Fukushima
mesh_terms: D000328:Adult; D000368:Aged; D000537:Aluminum Oxide / Q000737:chemistry; D003442:Crowns; D003776:Dental Porcelain / Q000737:chemistry; D017267:Dental Prosthesis Design / Q000379:methods*; D019232:Dental Restoration Failure; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D013499:Surface Properties; D016896:Treatment Outcome; D055815:Young Adult
chemical_list: C105314:AllCeram; D003776:Dental Porcelain; D000537:Aluminum Oxide