Journal of Oral Science Research

Journal of Oral Science Research ›› 2018, Vol. 34 ›› Issue (5): 518-521.DOI: 10.13701/j.cnki.kqyxyj.2018.05.014

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Marginal Fitness of Three Types of CAD/CAM Customized Abutments between Implant-abutment Interfaces.

ZHU Qing1,2, ZHU Chen-yuan2,3, SHE Wen-jun2,3*, JIAO Ting2,3*   

  1. 1. Department of Endodontics, Shanghai Ninth People’s Hospital, Shanghai JiaoTong University School of Medicine, Shanghai 200011, China;
    2. Shanghai Key Laboratory of Stomatology, National Center for Clinical Research of Oral Diseases, Shanghai 200011, China;
    3. Department of Prosthodontics, Shanghai Ninth People’s Hospital, Shanghai JiaoTong University School of Medicine, Shanghai 200011, China
  • Received:2017-11-16 Online:2018-05-28 Published:2018-05-29

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Abstract: Objective: To compare the marginal fitness of three types of CAD/CAM customized implant abutments (one-piece zirconia abutments, two-piece zirconia abutments and one-piece titanium abutments) between the implant-abutment interfaces. Methods: 3SHAPE software was used to design the customized CAD/CAM abutments. Three types of implants including one-piece zirconia abutments, two-piece zirconia abutments, and one-piece titanium abutment were fabricated after importing the designed data into computer-controlled cutting system (n=15). Stereomicroscope was used to measure the micro-gap of the implant-abutment interface. The results of the gap value were analyzed using statistical method. Results: The titanium abutment showed the lowest gap values, and those of the two-piece zirconia abutments were lower than those of the one-piece zirconia abutments. There was no statistical difference on the gap values among the palatal, labial, mesial, and distal surfaces in the same type of abutment. Conclusion: The one-piece titanium abutment showed the best marginal fit.

Key words: CAD/CAM, Zirconia abutment, Transgingival height, Titanium abutment, Marginal fit