J Korean Acad Prosthodont.  2011 Jul;49(3):263-269.

Maxillary anterior all ceramic restoration using digital impression and CAD/CAM

• Pyo SW
• Park YB
• Kim JH
• Moon HS
• Lee KW

Abstract

The digital impression technique has been developed for more precise restorations and convenient procedures in prosthodontic treatment compared to the conventional impression technique. Along with the utilization of CAD/CAM, the introduction of digital impression technique actualizes the digitalization of dental treatments. This case is to compare two different prostheses introducing each procedure in detail; one from CAD/CAM after taking digital impression and the other from the conventional technique. A 22-year-old female visited the clinic with the chief complaint of correction of discoloration and shape on maxillary right central incisor. Due to the trauma 8 years ago, the tooth was endodontically treated with post and resin core. The treatment was planned and the procedures were conducted under the patient's consent to treat the tooth with all ceramic crowns in two different ways for comparison. In conclusion, both prostheses presented clinically acceptable results with comparing the internal fitness of two all ceramic crowns. The prosthesis from digital impression, however, showed more errors in respect of internal fitness.

Keyword

Digital impression; CAD/CAM; Full veneer crown; Internal fitness

MeSH Terms

Ceramics
Crowns
Female
Humans
Incisor
Prostheses and Implants
Prosthodontics
Tooth
Young Adult
Ceramics

Figure

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  Fig. 1. Intraoral photo and periapical radiograph at first visit. The maxillary left central incisor was discolored. (A) The tooth was treated with post and resin core after endodontic treatment. (B)

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  Fig. 2. A: Before tooth preparation and gingivectomy, B: After tooth preparation and gingivectomy.

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  Fig. 3. A: iTero digital impression, B: Scanned image, C: Evaluating the amount of reduction and shape of prepared tooth.

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  Fig. 4. Modeling procedure and finishing margin determination.

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  Fig. 5. iTero polyurethane model (A), die (B), and articulator (C).

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  Fig. 6. All ceramic crown by conventional method (A), by digital method (B).

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  Fig. 7. Internal space specimen of the prosthesis by conventional method (A), by digital method (B).

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