In silico comparison of the reproducibility of full-arch implant provisional restorations to final restoration between a 3D Scan/CAD/CAM technique and the conventional method

Takuya Mino; Kenji Maekawa; Akihiro Ueda; Shizuo Higuchi; Junichi Sejima; Tetsuo Takeuchi; Emilio Satoshi Hara; Aya Kimura-Ono; Wataru Sonoyama; Takuo Kuboki

doi:10.1016/j.jpor.2014.12.001

In silico comparison of the reproducibility of full-arch implant provisional restorations to final restoration between a 3D Scan/CAD/CAM technique and the conventional method

J Prosthodont Res. 2015 Apr;59(2):152-8. doi: 10.1016/j.jpor.2014.12.001. Epub 2015 Jan 23.

Authors

Affiliations

¹ Department of Oral Rehabilitation and Regenerative Medicine, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Japan.
² Dental Laboratories, Hospital Medical Technology Part, Okayama University Hospital, Japan.
³ Wada Precision Dental Laboratories, Japan.
⁴ Department of Oral Rehabilitation and Regenerative Medicine, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Japan. Electronic address: kuboki@md.okayama-u.ac.jp.

PMID: 25623362
DOI: 10.1016/j.jpor.2014.12.001

Abstract

Purpose: The aim of this article was to investigate the accuracy in the reproducibility of full-arch implant provisional restorations to final restorations between a 3D Scan/CAD/CAM technique and the conventional method.

Methods: We fabricated two final restorations for rehabilitation of maxillary and mandibular complete edentulous area and performed a computer-based comparative analysis of the accuracy in the reproducibility of the provisional restoration to final restoration between a 3D scanning and CAD/CAM (Scan/CAD/CAM) technique and the conventional silicone-mold transfer technique. Final restorations fabricated either by the conventional or Scan/CAD/CAM method were successfully installed in the patient. The total concave/convex volume discrepancy observed with the Scan/CAD/CAM technique was 503.50mm(3) and 338.15 mm(3) for maxillary and mandibular implant-supported prostheses (ISPs), respectively. On the other hand, total concave/convex volume discrepancy observed with the conventional method was markedly high (1106.84 mm(3) and 771.23 mm(3) for maxillary and mandibular ISPs, respectively).

Conclusions: The results of the present report suggest that Scan/CAD/CAM method enables a more precise and accurate transfer of provisional restorations to final restorations compared to the conventional method.

Keywords: Accurate transfer; Implant final restoration; In silico analysis; Provisional restoration; Scan/CAD/CAM technique.

Publication types

Case Reports
Comparative Study

MeSH terms

Aged
Computer-Aided Design*
Dental Implantation / methods*
Dental Implants*
Dental Prosthesis Design / methods*
Dental Prosthesis, Implant-Supported
Humans
Imaging, Three-Dimensional*
Male
Mouth, Edentulous / rehabilitation*
Reproducibility of Results

Substances

Dental Implants