title: Effects of different root coping materials for abutment teeth on secondary caries and periodontal conditions: a retrospective study.
abstract: This study evaluated secondary caries and periodontal conditions associated with metal (MCs) and composite resin copings (RCs) of abutment teeth for overdentures. The rates of secondary caries and periodontal problems in 70 root copings (41 MCs, 29 RCs) in 35 patients were retrospectively investigated for a period of 6.9 years. Statistical analysis was performed using chi-square tests and logistic regression (P < .05). No significant differences in secondary caries or periodontal conditions were detected between MCs and RCs. These results suggest that RCs and MCs can be used as root copings of abutment teeth for overdentures.
authors.affiliation: Department of Prosthodontics and Oral Rehabilitation, School of Dentistry, Osaka University, Japan
authors.forename: Tsung-Chieh
authors.initials: TC
authors.lastname: Yang
authors.forename: Maiko
authors.initials: M
authors.lastname: Sugie
authors.forename: Yoshinobu
authors.initials: Y
authors.lastname: Maeda
authors.forename: Kazunori
authors.initials: K
authors.lastname: Ikebe
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003188:Composite Resins / Q000737:chemistry; D003442:Crowns; D000044:Dental Abutments; D003731:Dental Caries / Q000209:etiology*; D003764:Dental Materials / Q000737:chemistry*; D003773:Dental Plaque / Q000209:etiology; D017267:Dental Prosthesis Design; D017220:Dentin-Bonding Agents / Q000737:chemistry; D003828:Denture, Overlay; D005260:Female; D005500:Follow-Up Studies; D005899:Glass Ionomer Cements / Q000737:chemistry; D006047:Gold Alloys / Q000737:chemistry; D006801:Humans; D008297:Male; D008689:Methacrylates / Q000737:chemistry; D008875:Middle Aged; D009910:Oral Hygiene; D010514:Periodontal Pocket / Q000209:etiology*; D011176:Post and Core Technique; D019279:Resin Cements / Q000737:chemistry; D012189:Retrospective Studies; D014092:Tooth Root
chemical_list: C469237:Clearfil Core; D003188:Composite Resins; D003764:Dental Materials; D017220:Dentin-Bonding Agents; D005899:Glass Ionomer Cements; D006047:Gold Alloys; D008689:Methacrylates; D019279:Resin Cements; C084550:Vitremer; C100646:Metal Primer