Accuracy of printed dental models made with 2 prototype technologies and different designs of model bases

Camardella, Leonardo Tavares; Vilella, Oswaldo de Vasconcellos; Breuning, Hero

doi:10.1016/j.ajodo.2017.03.012

Cited by 106 publications

(110 citation statements)

References 19 publications

(31 reference statements)

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“…Yet another limitation was the design of 3D printed model. Camardella et al studied the accuracy of printed dental models with different model designs made with two prototype technologies. In their study, the authors generated the digital models using three designs: regular base, horseshoe‐shaped base, and horseshoe‐shaped base with a bar and measured the accuracy using the Ortho Analyzer software and Geomagic Qualify software.…”

Section: Discussionmentioning

confidence: 99%

Accuracy of 3D Printed Models Created by Two Technologies of Printers with Different Designs of Model Base

Rungrojwittayakul

Kan

Shiozaki

et al. 2019

Journal of Prosthodontics

115

125

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Purpose To evaluate the accuracy of three‐dimensional (3D) printed models manufactured using two different printer technologies with different model base designs. Materials and Methods A maxillary typodont was scanned using a desktop scanner to generate the Standard Tessellation Language (STL) file as a reference scan. After the scanning procedure, the STL file was exported to Model Builder™ for designing the following two types of the model bases: a solid base design and a hollow base design with a 2.0 mm thickness of the external shell. Each design was printed to produce 10 models using a Continuous Liquid Interface Production (CLIP) printer and a Digital Light Processing (DLP) printer. The following four groups were tested: CLIP with solid base (CS); CLIP with hollow base (CH); DLP with solid base (DS); and DLP with hollow base (DH). A total of 40 models were scanned using the same desktop scanner to generate the STL files for evaluation of the accuracy by evaluation of trueness and precision. All STL files were superimposed with the control STL file via surface matching software and a comparison was performed using the 3D color mapping function and a 2D comparison of 48 points selected on the tested model. The data were collected by measuring the deviation between the tested model and the reference scan. Trueness was calculated by using the comparison among four tested groups. The Kruskal‐Wallis analysis was conducted to assess the overall statistical significance of differences among the tested groups (α = 0.05). For precision measurement, the evaluation was conducted using Intraclass Correlation Coefficient (ICC) value at 95% confident interval to determine the deviation within the same tested groups. Results The median values for the deviated distance of the four tested groups were 0.045 (CH), 0.035 (CS), 0.077 (DH), and 0.077 mm (DS). There were no statistically significant differences between the trueness of the two groups when using the same printers regardless of the designs of model base (p > 0.05). However, when comparing the two printers using the same model base design and the two different designs of model base, there were statistically significant differences in trueness (p < 0.05). The 3D printed models created using CLIP technology had higher trueness than the DLP technology printer. Precision of the 3D printed model was displayed in ICC value. The ICC values of four tested groups were 0.968 (CH), 0.981 (CS), 0.969 (DH), and 0.983 (DS). All tested groups were classified as exhibiting an excellent level of precision based on 95% confident interval of the ICC estimation. Conclusions The accuracy of 3D printed models was affected by the printer technology regardless of whether the model base was solid or hollow. The CLIP technology printer produced significantly less variation from the reference model than the DLP printer. However, all of the 3D printed models were determined to exhibit a clinically acceptable level of accuracy based on the recorded dimensions being less than 100 µm diffe...

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Section: Discussionmentioning

confidence: 99%

Accuracy of 3D Printed Models Created by Two Technologies of Printers with Different Designs of Model Base

Rungrojwittayakul

Kan

Shiozaki

et al. 2019

Journal of Prosthodontics

115

125

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“…In a review of the literature, D'haese et al (2012) found substantial deviations between the planned and actual position of implants placed using printed guides, with a wide range of 0.95 to 4.5 mm. The orthodontic literature describes the accuracy of 3D printed objects by scanning and comparing model or appliance products with a source scan for dimensional conformity (Lee et al 2015, Bryant 2017, Camardella et al 2017, Favero et al 2017. There is no gold standard for evaluating 3D printers (Cristache & Gurbanescu 2017).…”

Section: Discussionmentioning

confidence: 99%

Endodontic applications of 3D printing

Anderson¹,

Wealleans²,

Ray³

2018

Int Endodontic J

127

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Anderson J, Wealleans J, Ray J. Endodontic applications of 3D printing. International Endodontic Journal.Computer-aided design (CAD) and computer-aided manufacturing (CAM) technologies can leverage cone beam computed tomography data for production of objects used in surgical and nonsurgical endodontics and in educational settings. The aim of this article was to review all current applications of 3D printing in endodontics and to speculate upon future directions for research and clinical use within the specialty. A literature search of PubMed, Ovid and Scopus was conducted using the following terms: stereolithography, 3D printing, computer aided rapid prototyping, surgical guide, guided endodontic surgery, guided endodontic access, additive manufacturing, rapid prototyping, autotransplantation rapid prototyping, CAD, CAM. Inclusion criteria were articles in the English language documenting endodontic applications of 3D printing. Fifty-one articles met inclusion criteria and were utilized. The endodontic literature on 3D printing is generally limited to case reports and pre-clinical studies. Documented solutions to endodontic challenges include: guided access with pulp canal obliteration, applications in autotransplantation, pre-surgical planning and educational modelling and accurate location of osteotomy perforation sites. Acquisition of technical expertise and equipment within endodontic practices present formidable obstacles to widespread deployment within the endodontic specialty. As knowledge advances, endodontic postgraduate programmes should consider implementing 3D printing into their curriculums. Future research directions should include clinical outcomes assessments of treatments employing 3D printed objects.

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“…Camardella et al (2017) [28], find that the printed models made by the PolyJet technique have appropriate accuracy, regardless of the base model (full/regular base; arcade/horseshoe; arch with posterior reinforcement bar), while the models printed by SLA technique (stereolithography) show statistically significant differences (transverse contraction) in terms of accuracy. The models printed by SLA with the posterior reinforcement bar showed better accuracy than those with the regular base [28]. Another interesting aspect is the analysis of the printed models versus the milled models.…”

Section: Resultsmentioning

confidence: 94%

“…In connection with the printing techniques of 3D dental models, some studies claim that the PolyJet and DLP (digital light processing) printing methods allow to obtain more accurate models than the SLA (stereolithography) or FFF (fused filament fabrication) methods [27]. Camardella et al (2017) [28], find that the printed models made by the PolyJet technique have appropriate accuracy, regardless of the base model (full/regular base; arcade/horseshoe; arch with posterior reinforcement bar), while the models printed by SLA technique (stereolithography) show statistically significant differences (transverse contraction) in terms of accuracy. The models printed by SLA with the posterior reinforcement bar showed better accuracy than those with the regular base [28].…”

Section: Resultsmentioning

confidence: 99%

Comparative Study on Two Methods Used in Obtaining 3D Printed Dental Models

Pantea¹,

Ciocoiu²,

Țâncu³

et al. 2019

Mat.Plast.

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The purpose of this study was to assess the accuracy of two 3D printed dental models manufactured after intraoral/IO and extraoral/EO scanning. A dental study model (KaVo Dental GmbH/Germany) was used as a reference for this research; this model was scanned with an industrial scanner (XT H 225 ST/Industrial CT scan/Nikon Metrology Inc./U.S.A.) and a reference STL file was generated (coded M1). Two 3D printed models (Form2/FormLabs Inc./U.S.A.) were produced via IO scanning (TRIOS 3 Battery Cart/3 Shape/Denmark), respectively via EO scanning (Swing Dental Scanner/Dof Inc./South Korea) of the reference dental model. The 3D printed models obtained were scanned with the industrial scanner, resulting in other two STL files (coded M2, respectively M3). All the STL files obtained (reference M1; M2; M3) were compared in pairs, using a 3D analysis software. Good results were achieved in obtaining 3D printed dental models via IO or EO scanning, yet, the 3D printed dental model obtained via IO scanning (M3) showed slightly improved dimensional compatibility with the reference model (M1) in comparison with the 3D printed dental model manufactured via EO scanning (M2).

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Accuracy of printed dental models made with 2 prototype technologies and different designs of model bases

Cited by 106 publications

References 19 publications

Accuracy of 3D Printed Models Created by Two Technologies of Printers with Different Designs of Model Base

Accuracy of 3D Printed Models Created by Two Technologies of Printers with Different Designs of Model Base

Endodontic applications of 3D printing

Comparative Study on Two Methods Used in Obtaining 3D Printed Dental Models

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