Accuracy and precision of intraoral scanners for shade matching: A systematic review

Tabatabaian, Farhad; Namdari, Mahshid; Mahshid, M; Vora, Siddhart R.; Mirabbasi, Shahriar

doi:10.1016/j.prosdent.2022.08.034

Cited by 7 publications

(8 citation statements)

References 67 publications

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“…The color capturing accuracy of the intraoral scanners has been studied extensively. Although the results from different studies are conflicting, recent systematic reviews on intraoral scanners' color capturing accuracy concluded that intraoral scanners showed high precision, but inconclusive trueness in shade selection 26,27 . Application of multicolor 3D‐printing using material jetting technology is relatively new in dentistry.…”

Section: Discussionmentioning

confidence: 99%

“…Although the results from different studies are conflicting, recent systematic reviews on intraoral scanners' color capturing accuracy concluded that intraoral scanners showed high precision, but inconclusive trueness in shade selection. 26,27 Application of multicolor 3D-printing using material jetting technology is relatively new in dentistry. It was reported that color reproduction accuracy of multicolor material jetting printers met the criterion of color quality in everyday contexts with various illumination.…”

Section: Discussionmentioning

confidence: 99%

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Ceramic veneer shade evaluation using a multicolored 3D‐printed model—A case report

2023

J Esthet Restor Dent

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ObjectiveThis article demonstrates the use of a multicolored 3D‐printed model for laboratory shade evaluation of ceramic veneers.Clinical ConsiderationsA young female patient presented with peg lateral incisors and diastemata between her maxillary incisors. Four ceramic veneers for her maxillary incisors were fabricated using a digital workflow. A multicolored 3D‐printed model was manufactured using material jetting technology. The multicolored model and try‐in pastes were used to evaluate and adjust the shade of the veneers. Clinically acceptable color matching was achieved, the veneers were delivered without further chairside shade adjustments.ConclusionsSuccessful color evaluation and adjustment were achieved using the combination of multicolored 3D‐printed model and try‐in pastes. The use of this approach saved time for stump shade taking and fabrication of tooth‐colored dies.Clinical SignificanceA multicolored 3D‐printed model can be a useful tool for color evaluation and adjustment of ceramic restorations.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Ceramic veneer shade evaluation using a multicolored 3D‐printed model—A case report

2023

J Esthet Restor Dent

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“…Patients with missing dentition not only almost lose their chewing function but also have partial damage to their pronunciation and aesthetic function, which will cause a huge impact on their physical and psychological health. 1 Dental implant supported by multiple implants is one of the most used treatments for the rehabilitation of partially or completely edentulous areas. 2 To obtain an adequate passively fit of the implant-supported prostheses, the key step is to obtain the high-precision position and posture of the implants.…”

Section: Introductionmentioning

confidence: 99%

Position and posture measurement of stereo probes for dental implants with a four-camera vision system

Li,

Zhang

2024

Opt. Eng.

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.The fixed denture supported by multiple implants can effectively improve the retention and stability of traditional complete dentures, and greatly improve the masticatory ability and life quality of patients, which has been proven to be a reliable treatment method. However, how to accurately obtain the position and posture of multiple implants while the patient feels comfortable is still one of the main clinical difficulties. We design a four-camera system and propose its corresponding method, which accurately measures the position and posture of stereo probes (note that the stereo probes are finely screwed on the implants, i.e., the coordinate systems of the implants are transferred to the stereo probes). In the calibration, a ChArUco calibration board is introduced and the calibration parameters are derived utilizing the proposed three-stage calibration strategy. In the measurement, the stereo probes are screwed on the implants and captured by the four-camera system. Through Canny/Devernay method, the gauge points on the surface of the stereo probe can be solved. Subsequently, the decoding of the gauge points and stereo probes is achieved by the implementation of the proposed matching and decoding strategy. In addition, to achieve higher accuracy, a refinement approach under multiview for the position and posture of stereo probes is established. The result of the experiments verifies that our system and method have higher accuracy and effectiveness (note that the distance error between the two stereo probes is about 19 μm), which is entirely satisfactory for the application of digital implant impressions.

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“…IOS devices accompanied by software can perform photographic color measurements. 5 In this way, these devices can transfer color information and can be used for both color determination and communication with dental prosthesis technicians. 6 …”

Section: Introductionmentioning

confidence: 99%

“… 7 8 9 10 Digital tools such as spectrophotometers, colorimeters, digital cameras, and some IOS devices (TRIOS 3, TRIOS 4 (3Shape, Copenhagen, Denmark), CEREC Omnicam, CEREC Primescan (Sirona Dental Systems, Bensheim, Germany), etc) are more objective. 5 11 However, the main disadvantage of digital color selection devices is their high price. 12 As a consequence, prior studies have compared the success of visual color selection and digital techniques.…”

Section: Introductionmentioning

confidence: 99%

Comparison of different digital shade selection methodologies in terms of accuracy

Şahin,

Ural

2024

J Adv Prosthodont

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PURPOSE This study aims to evaluate the accuracy of different shade selection techniques and determine the matching success of crown restorations fabricated using digital shade selection techniques. MATERIALS AND METHODS Teeth numbers 11 and 21 were prepared on a typodont model. For the #11 tooth, six different crowns were fabricated with randomly selected colors and set as the target crowns. The following four test groups were established: Group C, where the visual shade selection was performed using the Vita 3D Master Shade Guide and the group served as the control; Group Ph, where the shade selection was performed under the guidance of dental photography; Group S, where the shade selection was performed by measuring the target tooth color using a spectrophotometer; and Group I, where the shade selection was performed by scanning the test specimens and target crowns using an intraoral scanner. Based on the test groups, 24 crowns were fabricated using different shade selection techniques. The ΔE values were calculated according to the CIEDE2000 (2:1:1) formula. The collected data were analyzed by means of a one-way analysis of variance. RESULTS For the four test groups (Groups C, Ph, S, and I), the following mean ΔE values were obtained: 2.74, 3.62, 2.13, and 3.5, respectively. No significant differences were found among the test groups. CONCLUSION Although there was no statistically significant difference among the shade selection techniques, Group S had relatively lower ΔE values. Moreover, according to the test results, the spectrophotometer shade selection technique may provide more successful clinical results.

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Accuracy and precision of intraoral scanners for shade matching: A systematic review

Cited by 7 publications

References 67 publications

Ceramic veneer shade evaluation using a multicolored 3D‐printed model—A case report

Ceramic veneer shade evaluation using a multicolored 3D‐printed model—A case report

Position and posture measurement of stereo probes for dental implants with a four-camera vision system

Comparison of different digital shade selection methodologies in terms of accuracy

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