IADR Abstract Archives
Two-year Retrospective Clinical Study of Nanohybrid Ceramic Crowns
Objectives: The aim of this study is to assess the survival probability and marginal adaptation of Mazic duro (Vericom, Anyang, South Korea), the nanohybrid ceramic crowns at 2 years cemented with dual-cure resin cement.
Methods: This retrospective study consisted of a clinical follow-up examination of 23 patients between 24 and 76 years of age who had been given single crowns with nanohybrid ceramic CAD/CAM block at the department of conservatives, Seoul national university dental hospital. 25 restorations were placed between July 2016 and September 2018. The inclusive criteria were that the period of follow up could be at least 10 months. The exclusive criteria were that the crown was failed due to periodontal problems. Any clinical failures were categorized as: crown fracture, crown chipping, crown debonding, and secondary caries.
Results: At the 2-year recall check, 18 cases were remained, but 1 case was exclusived because of failure by periodontal problem. Among 17 cases, 3 cases were failed due to debonding and interestingly there were no crown fracture or crown chipping. Based on these failures, the survival rate of Mazic duro crowns cemented with resin cement was 100% after 1-year, and 87.5% after 2-year. The estimated by Kaplan-Meier survival analysis with statistic software (SPSS, version 23; SPSS, Inc), the expected survival period was 24 months. Marginal integrity was evaluated with modifed USPHS level, and all cases showed level A in latest F/U.
Conclusions: At 2-year evaluation, bonded nanohybrid ceramic full-coverage crowns have a favorable short-term survival rate with good clinical performances.
Methods: This retrospective study consisted of a clinical follow-up examination of 23 patients between 24 and 76 years of age who had been given single crowns with nanohybrid ceramic CAD/CAM block at the department of conservatives, Seoul national university dental hospital. 25 restorations were placed between July 2016 and September 2018. The inclusive criteria were that the period of follow up could be at least 10 months. The exclusive criteria were that the crown was failed due to periodontal problems. Any clinical failures were categorized as: crown fracture, crown chipping, crown debonding, and secondary caries.
Results: At the 2-year recall check, 18 cases were remained, but 1 case was exclusived because of failure by periodontal problem. Among 17 cases, 3 cases were failed due to debonding and interestingly there were no crown fracture or crown chipping. Based on these failures, the survival rate of Mazic duro crowns cemented with resin cement was 100% after 1-year, and 87.5% after 2-year. The estimated by Kaplan-Meier survival analysis with statistic software (SPSS, version 23; SPSS, Inc), the expected survival period was 24 months. Marginal integrity was evaluated with modifed USPHS level, and all cases showed level A in latest F/U.
Conclusions: At 2-year evaluation, bonded nanohybrid ceramic full-coverage crowns have a favorable short-term survival rate with good clinical performances.
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