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Accuracy of intraoral and extraoral digital data acquisition for dental restorations.
J Appl Oral Sci. 2016 Jan-Feb; 24(1):85-94.JA

Abstract

The computer-aided design (CAD) and computer-aided manufacturing (CAM) process chain for dental restorations starts with taking an impression of the clinical situation. For this purpose, either extraoral digitization of gypsum models or intraoral digitization can be used. Despite the increasing use of dental digitizing systems, there are only few studies on their accuracy.

OBJECTIVE

This study compared the accuracy of various intraoral and extraoral digitizing systems for dental CAD/CAM technology.

MATERIAL AND METHODS

An experimental setup for three-dimensional analysis based on 2 prepared ceramic master dies and their corresponding virtual CAD-models was used to assess the accuracy of 10 extraoral and 4 intraoral optical non-contact dental digitizing systems. Depending on the clinical procedure, 10 optical measurements of either 10 duplicate gypsum dies (extraoral digitizing) or directly of the ceramic master dies (intraoral digitizing) were made and compared with the corresponding CAD-models.

RESULTS

The digitizing systems showed differences in accuracy. However, all topical systems were well within the benchmark of ±20 µm. These results apply to single tooth measurements.

CONCLUSIONS

Study results are limited, since only single teeth were used for comparison. The different preparations represent various angles and steep and parallel opposing tooth surfaces (incisors). For most digitizing systems, the latter are generally the most difficult to capture. Using CAD/CAM technologies, the preparation angles should not be too steep to reduce digitizing errors. Older systems might be limited to a certain height or taper of the prepared tooth, whereas newer systems (extraoral as well as intraoral digitization) do not have these limitations.

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Authors+Show Affiliations

Klinik für Zahnärztliche Prothetik, Zentrum Zahn-, Mund-, und Kieferheilkunde, Universität Ulm, Ulm, Germany.

Klinik für Zahnärztliche Prothetik, Zentrum Zahn-, Mund-, und Kieferheilkunde, Universität Ulm, Ulm, Germany.

Klinik für Zahnärztliche Prothetik, Zentrum Zahn-, Mund-, und Kieferheilkunde, Universität Ulm, Ulm, Germany.

Klinik für Zahnärztliche Prothetik, Zentrum Zahn-, Mund-, und Kieferheilkunde, Universität Ulm, Ulm, Germany.

Poliklinik für Zahnärztliche Prothetik, Justus-Liebig Universität, Giessen, Germany.

Poliklinik für Zahnärztliche Prothetik, Justus-Liebig Universität, Giessen, Germany.

Klinik für Zahnärztliche Prothetik, Zentrum Zahn-, Mund-, und Kieferheilkunde, Universität Ulm, Ulm, Germany.

MeSH

Analysis of VarianceCalcium SulfateCeramicsComputer-Aided DesignDental Impression MaterialsDental Impression TechniqueDental Prosthesis DesignDental Restoration, PermanentImage Processing, Computer-AssistedImaging, Three-DimensionalReproducibility of Results

Pub Type(s)

Comparative Study

Journal Article

Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

27008261

Citation

Rudolph, Heike, et al. "Accuracy of Intraoral and Extraoral Digital Data Acquisition for Dental Restorations." Journal of Applied Oral Science : Revista FOB, vol. 24, no. 1, 2016, pp. 85-94.

Rudolph H, Salmen H, Moldan M, et al. Accuracy of intraoral and extraoral digital data acquisition for dental restorations. J Appl Oral Sci. 2016;24(1):85-94.

Rudolph, H., Salmen, H., Moldan, M., Kuhn, K., Sichwardt, V., Wöstmann, B., & Luthardt, R. G. (2016). Accuracy of intraoral and extraoral digital data acquisition for dental restorations. Journal of Applied Oral Science : Revista FOB, 24(1), 85-94. https://doi.org/10.1590/1678-775720150266

Rudolph H, et al. Accuracy of Intraoral and Extraoral Digital Data Acquisition for Dental Restorations. J Appl Oral Sci. 2016 Jan-Feb;24(1):85-94. PubMed PMID: 27008261.

* Article titles in AMA citation format should be in sentence-case

TY - JOUR T1 - Accuracy of intraoral and extraoral digital data acquisition for dental restorations. AU - Rudolph,Heike, AU - Salmen,Harald, AU - Moldan,Matthias, AU - Kuhn,Katharina, AU - Sichwardt,Viktor, AU - Wöstmann,Bernd, AU - Luthardt,Ralph Gunnar, PY - 2015/06/15/received PY - 2015/10/04/accepted PY - 2016/3/24/entrez PY - 2016/3/24/pubmed PY - 2016/11/15/medline SP - 85 EP - 94 JF - Journal of applied oral science : revista FOB JO - J Appl Oral Sci VL - 24 IS - 1 N2 - UNLABELLED: The computer-aided design (CAD) and computer-aided manufacturing (CAM) process chain for dental restorations starts with taking an impression of the clinical situation. For this purpose, either extraoral digitization of gypsum models or intraoral digitization can be used. Despite the increasing use of dental digitizing systems, there are only few studies on their accuracy. OBJECTIVE: This study compared the accuracy of various intraoral and extraoral digitizing systems for dental CAD/CAM technology. MATERIAL AND METHODS: An experimental setup for three-dimensional analysis based on 2 prepared ceramic master dies and their corresponding virtual CAD-models was used to assess the accuracy of 10 extraoral and 4 intraoral optical non-contact dental digitizing systems. Depending on the clinical procedure, 10 optical measurements of either 10 duplicate gypsum dies (extraoral digitizing) or directly of the ceramic master dies (intraoral digitizing) were made and compared with the corresponding CAD-models. RESULTS: The digitizing systems showed differences in accuracy. However, all topical systems were well within the benchmark of ±20 µm. These results apply to single tooth measurements. CONCLUSIONS: Study results are limited, since only single teeth were used for comparison. The different preparations represent various angles and steep and parallel opposing tooth surfaces (incisors). For most digitizing systems, the latter are generally the most difficult to capture. Using CAD/CAM technologies, the preparation angles should not be too steep to reduce digitizing errors. Older systems might be limited to a certain height or taper of the prepared tooth, whereas newer systems (extraoral as well as intraoral digitization) do not have these limitations. SN - 1678-7765 UR - https://www.unboundmedicine.com/medline/citation/27008261/Accuracy_of_intraoral_and_extraoral_digital_data_acquisition_for_dental_restorations_ DB - PRIME DP - Unbound Medicine ER -