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[Precision of digital impressions with TRIOS under simulated intraoral impression taking conditions].
Beijing Da Xue Xue Bao Yi Xue Ban. 2015 Feb 18; 47(1):85-9.BD

Abstract

OBJECTIVE

To evaluate the precision of digital impressions taken under simulated clinical impression taking conditions with TRIOS and to compare with the precision of extraoral digitalizations.

METHODS

Six #14-#17 epoxy resin dentitions with extracted #16 tooth preparations embedded were made. For each artificial dentition, (1)a silicone rubber impression was taken with individual tray, poured with type IV plaster,and digitalized with 3Shape D700 model scanner for 10 times; (2) fastened to a dental simulator, 10 digital impressions for each were taken with 3Shape TRIOS intraoral scanner. To assess the precision, best-fit algorithm and 3D comparison were conducted between repeated scan models pairwise by Geomagic Qualify 12.0, exported as averaged errors (AE) and color-coded diagrams. Non-parametric analysis was performed to compare the precisions of digital impressions and model images. The color-coded diagrams were used to show the deviations distributions.

RESULTS

The mean of AE for digital impressions was 7.058 281 μm, which was greater than that of 4.092 363 μm for the model images (P<0.05). However, the means and medians of AE for digital impressions were no more than 10 μm, which meant that the consistency between the digital impressions was good. The deviations distribution was uniform in the model images,while nonuniform in the digital impressions with greater deviations lay mainly around the shoulders and interproximal surfaces.

CONCLUSION

Digital impressions with TRIOS are of good precision and up to the clinical standard. Shoulders and interproximal surfaces scanning are more difficult.

Authors+Show Affiliations

Yang X
Department of Prosthodontics, Peking University School and Hospital of Stomatology, Beijing 100081, China.
Sun YF
Shenzhen Upcera Co. LTD, Guangdong Shenzhen 518000, China.
Tian L
Shenzhen Upcera Co. LTD, Guangdong Shenzhen 518000, China.
Si WJ
Department of Material Science and Engineering, Tsinghua University, Beijing 100083, China.
Feng HL
Department of Prosthodontics, Peking University School and Hospital of Stomatology, Beijing 100081, China.
Liu YH
Department of General Dentistry, Peking University School and Hospital of Stomatology, Beijing 100081, China; National Engineering Laboratory for Digital and Material Technology of Stomatology, Peking University School and Hospital of Stomatology, Beijing 100081, China.

MeSH

Computer-Aided DesignDental Impression MaterialsDental Impression TechniqueHumansImaging, Three-DimensionalModels, Dental

Pub Type(s)

Journal Article

Language

chi

PubMed ID

25686335

Citation

Yang, Xin, et al. "[Precision of Digital Impressions With TRIOS Under Simulated Intraoral Impression Taking Conditions]." Beijing Da Xue Xue Bao. Yi Xue Ban = Journal of Peking University. Health Sciences, vol. 47, no. 1, 2015, pp. 85-9.
Yang X, Sun YF, Tian L, et al. [Precision of digital impressions with TRIOS under simulated intraoral impression taking conditions]. Beijing Da Xue Xue Bao Yi Xue Ban. 2015;47(1):85-9.
Yang, X., Sun, Y. F., Tian, L., Si, W. J., Feng, H. L., & Liu, Y. H. (2015). [Precision of digital impressions with TRIOS under simulated intraoral impression taking conditions]. Beijing Da Xue Xue Bao. Yi Xue Ban = Journal of Peking University. Health Sciences, 47(1), 85-9.
Yang X, et al. [Precision of Digital Impressions With TRIOS Under Simulated Intraoral Impression Taking Conditions]. Beijing Da Xue Xue Bao Yi Xue Ban. 2015 Feb 18;47(1):85-9. PubMed PMID: 25686335.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - [Precision of digital impressions with TRIOS under simulated intraoral impression taking conditions]. AU - Yang,Xin, AU - Sun,Yi-fei, AU - Tian,Lei, AU - Si,Wen-jie, AU - Feng,Hai-lan, AU - Liu,Yi-hong, PY - 2015/2/17/entrez PY - 2015/2/17/pubmed PY - 2015/10/8/medline SP - 85 EP - 9 JF - Beijing da xue xue bao. Yi xue ban = Journal of Peking University. Health sciences JO - Beijing Da Xue Xue Bao Yi Xue Ban VL - 47 IS - 1 N2 - OBJECTIVE: To evaluate the precision of digital impressions taken under simulated clinical impression taking conditions with TRIOS and to compare with the precision of extraoral digitalizations. METHODS: Six #14-#17 epoxy resin dentitions with extracted #16 tooth preparations embedded were made. For each artificial dentition, (1)a silicone rubber impression was taken with individual tray, poured with type IV plaster,and digitalized with 3Shape D700 model scanner for 10 times; (2) fastened to a dental simulator, 10 digital impressions for each were taken with 3Shape TRIOS intraoral scanner. To assess the precision, best-fit algorithm and 3D comparison were conducted between repeated scan models pairwise by Geomagic Qualify 12.0, exported as averaged errors (AE) and color-coded diagrams. Non-parametric analysis was performed to compare the precisions of digital impressions and model images. The color-coded diagrams were used to show the deviations distributions. RESULTS: The mean of AE for digital impressions was 7.058 281 μm, which was greater than that of 4.092 363 μm for the model images (P<0.05). However, the means and medians of AE for digital impressions were no more than 10 μm, which meant that the consistency between the digital impressions was good. The deviations distribution was uniform in the model images,while nonuniform in the digital impressions with greater deviations lay mainly around the shoulders and interproximal surfaces. CONCLUSION: Digital impressions with TRIOS are of good precision and up to the clinical standard. Shoulders and interproximal surfaces scanning are more difficult. SN - 1671-167X UR - https://www.unboundmedicine.com/medline/citation/25686335/[Precision_of_digital_impressions_with_TRIOS_under_simulated_intraoral_impression_taking_conditions]_ DB - PRIME DP - Unbound Medicine ER -