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J Korean Acad Prosthodont. 2017 Jan;55(1):61-70. Korean.
Published online Jan 25, 2017.  https://doi.org/10.4047/jkap.2017.55.1.61
© 2017 The Korean Academy of Prosthodontics
Implant prosthesis for fully edentulous patients using intra-oral scanning and abutment merging technique: A case report
Chan-Hyeon Hwang,1 Seung-Mi Jeong,1 Yong-Jun Kim,1 Kyeong-Hee Kim,1 Jeong-Whan Fang,1 Dae-Hwan Kim,1 and Byung-Ho Choi2
1Department of Prosthodontics, Wonju College of Medicine, Yonsei University, Wonju, Republic of Korea.
2Department of Oral and Maxillofacial Surgery, Wonju College of Medicine, Yonsei University, Wonju, Republic of Korea.

Corresponding Author: Seung-Mi Jeong. Department of Prosthodontics, Wonju College of Medicine, Yonsei University, 20 Iisan-ro, Wonju 26426, Republic of Korea. +82 (0)33 741 2114: Email: smj3@yonsei.ac.kr
Received July 07, 2016; Revised September 09, 2016; Accepted September 20, 2016.

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.


Abstract

In this case, the impression surface of the existing denture was scanned and was inverted three-dimensionally to express the residual ridge form. Implant planning was performed on the superimposed data of the CT with the scanned image of the denture with radiopaque markers attached. At the day of surgery, customized abutments fabricated in accordance with the form of the gingival margin were linked with fixtures and temporary restorations were set. In the process of fabricating the final prosthesis after the osseointegration of implant fixture, the intraoral scan images at abutment level were merged with images of the abutments scanned and stored before implant surgery. By fabricating the final prosthesis with the abutments obtained by merging can increase the marginal fitness of the final prosthesis and simplify the clinical process.

Keywords: Full edentulism; Intraoral scan; Invert scan image; Abutment merging; Flapless implant

Figures


 Fig. 1
Pretreatment intraoral view. (A, E) Occlusal view of maxilla and mandible, (C) Frontal view, (B, D) Lateral view.
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Fig. 2
Pretreatment panoramic view.
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Fig. 3
Pretreatment intraoral view with denture.
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Fig. 4
Polyvinyl siloxane and radiopaque markers are attached on anterior and both lateral polished surface.
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Fig. 5
Denture scanning with intraoral scanner.
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Fig. 6
Denture scan image and image inverting to express residual ridge.
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Fig. 7
Implant planning on residual ridge reconstructed and superimposed on CBCT.
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Fig. 8
Printed surgical guide for flapless guided implant surgery.
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Fig. 9
Printed model and bite jig to locate and fix the surgical guide.
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Fig. 10
Designed customized abutments and one-piece temporary restoration.
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Fig. 11
Customized abutment scanning and data retaining before implant surgery.
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Fig. 12
Intraoral view after implant surgery. Immediate implant prosthesis with PMMA restoration.
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Fig. 13
Intraoral scanning for final prosthesis. Scanbody was connected to change anterior abutments.
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Fig. 14
Segmentation of bite and provisional restoration (A), and bite scan taking with segmented provisional PMMA restoration (B).
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Fig. 15
Definite abutment form restored by abutment merging with pre-scanned abutment image.
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Fig. 16
Design of final restoration on merged abutment image.
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Fig. 17
Porcelain veneered zirconia for anterior implant restoration.
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Fig. 18
Intraoral view after treatment. (A, E) Occlusal view of maxilla and mandible, (C) Frontal view, (B, D) Lateral view .
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Fig. 19
Bilateral balanced occlusion. (A) Working side of lateral protrusion (Rt.), (B) Balancing side of lateral protrusion (Rt.), (C) Balancing side of lateral protrusion (Lt.), (D) Working side of lateral protrusion (Lt.).
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Fig. 20
Panoramic view after 3 months.
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References
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ORCID iDs

Seung-Mi Jeong
https://orcid.org/http://orcid.org/0000-0002-1543-7227

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