Customized abutment and screw-type implant prostheses after cementation based on the digital intra-oral impression technique

Yong-Shin Hong; Eun-Jin Park; Sun-Jong Kim; Myung-Rae Kim; Seong-Joo Heo; Ji-Man Park

doi:10.4047/jkap.2012.50.1.67

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Hong, Park, Kim, Kim, Heo, and Park: Customized abutment and screw-type implant prostheses after cementation based on the digital intra-oral impression technique

Case Report

The Journal of Korean Academy of Prosthodontics

The Journal of Korean Academy of Prosthodontics 2012; 50(1): 67-73.

Published online: 31 January 2012

DOI: https://doi.org/10.4047/jkap.2012.50.1.67

Customized abutment and screw-type implant prostheses after cementation based on the digital intra-oral impression technique

Yong-Shin Hong, DDS¹, Eun-Jin Park, DDS, PhD¹, Sun-Jong Kim, DDS, PhD¹, Myung-Rae Kim, DDS, PhD¹, Seong-Joo Heo, DDS, PhD², Ji-Man Park, DDS, PhD¹

¹Department of Prosthodontics, School of Medicine, Ewha Womans University, Seoul, Korea.

²Department of Prosthodontics, School of Dentistry, Seoul National University, Seoul, Korea.

Corresponding Author: Ji-Man Park. Department of Prosthodontics, School of Medicine, Ewha Womans University, 911-1 Mok-5dong, Yangchoen-gu, Seoul, 158-710, Korea. +82 2 2650 5631, jimarn@ewha.ac.kr

Received 23 December 2011 Revised 2 January 2012 Accepted 12 January 2012

Abstract

Fixed dental prostheses such as inlay, onlay, crown, and bridge fabricated by CAD/CAM technique combined with digital impressions is getting popular due to the recent rapid progress of digital impression taking system. For the scope of implant prosthesis, however, digital intra-oral scan hasn't been actively utilized for the fabrication of superstructures. In this case report, 6 cases of titanium-milled custom abutment based on the iTero intra-oral scan data were introduced, five of them were restored with screw-type prosthesis after cementation (SCRP) and the clinical results were satisfactory on restoring the function and esthetics.

Keywords: Intraoral scanner, Dental implant, Customized abutment

Figures and Tables

Fig. 1

Clinical pictures of case 1.

A: Peri-implant soft tissue shape after tissue-molding, B: Scan body adaptation for digital impression taking, C: Buccal bite registration by iTero intra-oral scanner, D: Computer-aided design of customized abutment using PowerMILL CAD solution, E: Polyurethane dies and model milled at the milling center, F: Milled titanium customized abutment, G: Customized abutments and SCRP-type porcelain fused-to gold prosthesis, H: Final prosthesis after excess cement removal and polishing.

Fig. 2

Intra-oral and model view of case 2.

A: Occluding scan body due to insufficient inter-arch distance, B: Polyurethane die and customized abutment, C: Customized abutment try-in, D: Final implant prosthesis after cementation.

Fig. 3

Clinical pictures of case 3.

A: Intra-oral view after implant surgery, B: Scan body adaptation (note the tissue swelling around implants), C: Computer-aided design of customized abutments, D: Polyurethane model fabricated at milling center, E: Customized abutment tryin, F: Provisional prosthesis built on customized abutments, G: Corrected margin after pick-up impression taking and additional milling, H: Cementation-type implant prosthesis.

Fig. 4

Clinical pictures on case 4.

A: Customized abutment try-in (occlusal view), B: Supragingival margin (lingual view), C: The amount of marginal discrepancy was around 1.5 mm, D: Completed implant prosthesis.

Fig. 5

Clinical pictures of case 5.

A: Initial intraoral view, B: Occluding scan body due to insufficient inter-arch distance, C: Marginal discrepancy between customized abutment and crown milled from Pt-Ag-In alloy block, D: SCRP-type final implant prosthesis.

Fig. 6

Clinical pictures of case 6.

A: Initial intraoral view, B: Scan body adaptation, C: Polyurethane model milled at milling center, D: Preparation for the cementation between customized abutment and full-zirconia crown Teflon tape is useful for temporary sealing of screw hole, E: Marginal discrepancy shown on screw-type implant prosthesis after cementation, F: Cemented final implant prosthesis.

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