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510(k) Data Aggregation

    K Number
    K193260
    Manufacturer
    Date Cleared
    2020-08-21

    (269 days)

    Product Code
    Regulation Number
    872.3275
    Panel
    Dental
    Reference & Predicate Devices
    Why did this record match?
    Device Name :

    U-Cem Premium & MAZIC Cem

    AI/MLSaMDIVD (In Vitro Diagnostic)TherapeuticDiagnosticis PCCP AuthorizedThirdpartyExpeditedreview
    Intended Use
      1. Luting metal crowns, bridge, inlay and including porcelain-fused-to-metal and composite-to-metal varieties
      1. Luting resin crowns, bridges, inlays, onlays and veneers
      1. Luting metal or non-metal/fiber posts
      1. Luting orthodontic appliances
      1. Luting porcelain inlays, onlays, crowns and veneers (includes alumina and zirconia)
    Device Description

    The U-Cem™ Premium and the MAZIC® Cem are dual-cured self-adhesive resin cement. The U-Cem™ Premium and the MAZIC® Cem are the same product yet with different label design for different volume packages as shown below. The brand name, MAZIC® Cem, is specifically for 8.5g.

    It is fluoride-releasing paste type, and has radiopaque. U-Cem™ Premium is available in both Automix and Double Dispenser types, and offers three different shades: Clear, Universal, and Opaque for esthetics.

    It is used for cementation of ceramics, metals or composite inlays, onlays, crowns, bridges, posts and screws.

    AI/ML Overview

    The provided document is a 510(k) premarket notification for a dental cement (U-Cem™ Premium & MAZIC® Cem). It describes the device, its intended use, and compares its performance to a predicate device (BisCem, K082449) to establish substantial equivalence.

    This document does not describe a study involving an AI/Machine Learning device or a diagnostic device that would require the establishment of ground truth by experts, MRMC studies, or specific acceptance criteria related to classification metrics (e.g., sensitivity, specificity).

    Instead, it focuses on the physical and performance properties of a dental cement, a tangible medical device. The "acceptance criteria" in this context refer to the device's ability to meet certain established standards and to demonstrate comparable performance to a legally marketed predicate device.

    Therefore, many of the requested items (e.g., number of experts, adjudication method, MRMC study, standalone performance, training set details) are not applicable to this type of device submission.

    However, I can extract the relevant "acceptance criteria" (which are performance specifications and compliance with standards) and the "reported device performance" from the document.


    Overview of "Acceptance Criteria" and Reported Device Performance

    For the U-Cem™ Premium & MAZIC® Cem dental cement, the "acceptance criteria" are implied by its compliance with recognized international standards for dental materials and its demonstration of comparable or superior physical properties to a predicate device. The study proves the device meets these criteria through a series of non-clinical performance tests and biocompatibility tests.


    1. Table of Acceptance Criteria and Reported Device Performance

    The device is deemed acceptable if its performance parameters meet or exceed those of the predicate device and comply with relevant ISO standards.

    Characteristic ("Acceptance Criteria" Basis)Predicate Device (BisCem) PerformanceSubject Device (U-Cem™ Premium / MAZIC® Cem) PerformanceComment / Compliance
    Indications for UseMatchMatchSubstantially Equivalent
    Principle of OperationDual curedDual curedSubstantially Equivalent
    Working TimePhysically homogeneous & forming thin layerPhysically homogeneous & forming thin layerSubstantially Equivalent
    Setting Time9 m 08 s2 m 12 sBoth meet ISO 4049 requirement. Subject device is faster, which is not an issue for substantial equivalence.
    Compressive Strength189.15 MPa236.35 MPaSubject device has higher strength.
    Flexural Strength101.93 MPa135.87 MPaSubject device has higher strength.
    Film Thickness23 µm11 µmSubject device has thinner film (generally desirable).
    Shear Bond Strength:Subject device generally superior or comparable.
    - Composite - Dentin7.68 MPa12.85 MPaSubject device higher.
    - Composite - Enamel16.32 MPa19.16 MPaSubject device higher.
    - Glass Ceramic - Lithium disilicate5.49 MPa6.21 MPaSubject device higher.
    - Ceramic Aluminum oxide4.27 MPa7.28 MPaSubject device higher.
    - Metal4.38 MPa12.70 MPaSubject device higher.
    - Zirconia5.12 MPa9.05 MPaSubject device higher.
    Fluoride Release10.02 ppm2.42 ppmDifference noted, but sufficient for claims.
    Radio-opacityNone1.45Subject device has radiopacity.
    Solubility1.53 µg/mm²0.87 µg/mm²Subject device has lower solubility (generally desirable).
    Polymerization Shrinkage4.18 %4.38 %Comparable.
    Chemical CompositionAmorphous silica (filler), Methacrylate based (resin)Amorphous silica (filler), Methacrylate based (resin)Substantially Equivalent.
    Method of ApplicationBonding agent not requiredBonding agent not requiredSubstantially Equivalent.
    Ions ReleasedFluorideFluorideSubstantially Equivalent.
    Standard ConformedISO 4049ISO 4049Both conform.
    BiocompatibilityYesYesBoth biocompatible.
    UsePrescription / HospitalPrescription / HospitalSubstantially Equivalent.
    Delivery SystemDual-syringe (Automix type)Dual syringe (Automix and Double Dispenser type)Additional delivery system for subject device, but mixing ratio same.
    Storage Condition2~8°C2~8°CSubstantially Equivalent.
    Shade OptionsTranslucent, OpaqueClear, Universal, OpaqueSubject device has more options.

    Study Details (Non-Applicable sections are explicitly stated)

    Since this is a submission for a dental cement based on physical and chemical properties and comparison to a predicate device, the standard questions relating to AI/ML or diagnostic image analysis are largely not applicable.

    2. Sample size used for the test set and the data provenance:

    • The document implies that various samples of the U-Cem™ Premium & MAZIC® Cem were used for each physical, chemical, and biological test. Specific sample sizes for each test are not provided in this summary.
    • The data provenance is from non-clinical bench testing and biocompatibility testing. The country of origin for the testing itself is not explicitly stated, but the manufacturer is Vericom Co., Ltd. from the Republic of Korea. The data is prospective in the sense that the tests were specifically performed for this submission to demonstrate substantial equivalence.

    3. Number of experts used to establish the ground truth for the test set and the qualifications of those experts (e.g. radiologist with 10 years of experience):

    • Not Applicable. Ground truth, in the AI/ML sense, is not established for this device. The "ground truth" for dental cement is its objective physical and chemical properties, measured using standardized laboratory methods (e.g., ISO standards).

    4. Adjudication method (e.g. 2+1, 3+1, none) for the test set:

    • Not Applicable. Adjudication methods are relevant for subjective human assessments, typically in diagnostic studies. The performance of this device is measured objectively through lab tests.

    5. If a multi-reader multi-case (MRMC) comparative effectiveness study was done, If so, what was the effect size of how much human readers improve with AI vs without AI assistance:

    • No, an MRMC comparative effectiveness study was not done. This is not relevant for a dental cement.

    6. If a standalone (i.e. algorithm only without human-in-the-loop performance) was done:

    • Not Applicable. This is not an algorithm or software device. The "standalone performance" refers to the intrinsic physical and chemical properties of the cement itself, as measured by the non-clinical tests.

    7. The type of ground truth used (expert consensus, pathology, outcomes data, etc.):

    • The "ground truth" for this device's performance is based on objective measurements derived from standardized laboratory testing methods (e.g., ISO standards for dental materials) and direct comparison to the characteristics of a legally marketed predicate device.

    8. The sample size for the training set:

    • Not Applicable. This device is a manufactured product, not an AI/ML model that requires training data.

    9. How the ground truth for the training set was established:

    • Not Applicable. (See point 8)
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