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510(k) Data Aggregation

    K Number
    K250778
    Device Name
    Sil-Flow
    Date Cleared
    2025-05-23

    (70 days)

    Product Code
    Regulation Number
    872.3690
    Panel
    Dental
    Reference & Predicate Devices
    Predicate For
    N/A
    AI/MLSaMDIVD (In Vitro Diagnostic)TherapeuticDiagnosticis PCCP AuthorizedThirdpartyExpeditedreview
    Intended Use

    Sil-Flow is indicated for
    [A] Temporary inlay and onlay treatments of the cavity
    [B] Sealing of openings for implant screws
    [C] Relining material for temporary crowns and bridges
    [D] Block-out material for retentive areas in the dental arch, e.g. before taking impressions
    [E] Covering of the gingival margin
    [F] Fixing of resin matrix during filling placement
    [G] Temporary filling of cavities

    Device Description

    Sil-Flow is a flowable light-cured temporary filling material used for filling and sealing.

    AI/ML Overview

    The provided FDA Premarket Notification (510(k)) for the Sil-Flow device is for a Tooth Shade Resin Material and NOT an AI/Software as a Medical Device (SaMD) product. Therefore, the information typically found in such a submission regarding AI device performance, such as:

    • Acceptance Criteria for AI performance metrics (e.g., sensitivity, specificity, AUC)
    • Study design for AI performance evaluation (e.g., standalone, human-in-the-loop, MRMC)
    • Sample size and data provenance for AI test sets
    • Ground truth establishment (number/qualifications of experts, adjudication methods)
    • Training set details for AI models
    • Effect size of AI assistance for human readers

    are not present in this document.

    This 510(k) submission focuses on demonstrating substantial equivalence to a predicate device (Clip Flow) based on physical and chemical properties, biocompatibility, and intended use for a dental material.

    Here's a breakdown of the requested information based on the provided document, highlighting what is present and what is absent from the perspective of an AI/SaMD device:


    Acceptance Criteria and Study Proving Device Meets Criteria (for Dental Material)

    The acceptance criteria and supporting study for Sil-Flow relate to its physical, chemical, and biological properties as a tooth shade resin material, demonstrating its safety and performance for its indicated uses.

    1. A table of acceptance criteria and the reported device performance

    Test ParameterAcceptance Criteria (from ISO 4049 Protocol)Reported Device PerformanceComments
    Physical/Chemical Properties
    Visual Appearance(Implied to meet standard)Met criteria"All test results met the criteria in the standard."
    Depth of Cure (mm)Not explicitly stated (but referenced ISO 4049)3.1 mmPredicate device (Clip Flow) reported 11mm, suggesting a difference. However, "Both the subject devices and the predicate device have physical parameters which meet the requirements of the relevant ISO standards," implying 3.1mm is acceptable per the standard for Sil-Flow.
    Shor Hardness DNot explicitly stated52 Shor DPredicate (Clip Flow) reported 90 Shore A. Note the difference in Shore scale (D vs. A), making direct comparison difficult without a conversion or further context, but still stated to meet relevant ISO standard.
    Sensitivity to Ambient Light(Implied to meet standard)Met criteria"All test results met the criteria in the standard."
    Water Sorption (µg/mm³)<40 µg/mm³ (from predicate)<40 µg/mm³Explicitly stated and met.
    Water Solubility (µg/mm³)<7.5 µg/mm³ (from predicate)<7.5 µg/mm³Explicitly stated and met.
    Color Stability(Implied to meet standard)Met criteria"All test results met the criteria in the standard."
    Shade Stability(Implied to meet standard)Met criteria"All test results met the criteria in the standard."
    Biocompatibility Testing
    CytotoxicityPass (according to ISO 10993-05)PassedExplicitly stated.
    IrritationPass (according to ISO 10993-10)PassedExplicitly stated.
    SensitizationPass (according to ISO 10993-10)PassedExplicitly stated.
    Acute Systemic ToxicityPass (according to ISO 10993-11)PassedExplicitly stated.
    Stability (Shelf Life)
    Shelf LifeDemonstrated at 3 years3 years"All shelf life determinations use the same testing protocols as the characterization testing which are based on ISO 4049."

    2. Sample sizes used for the test set and the data provenance

    • Sample Size for Test Set: Not specified in the document. The testing summary refers to "protocols based on ISO 4049," which would define the number of samples for each test (e.g., number of specimens for depth of cure, water sorption, etc.), but the exact numbers are not provided.
    • Data Provenance: Not explicitly stated (e.g., country of origin, retrospective/prospective). However, the testing is in vitro (laboratory testing of the material itself) and biocompatibility testing on biological models, not clinical data from patients.

    3. Number of experts used to establish the ground truth for the test set and the qualifications of those experts

    • Not Applicable. For a dental material, "ground truth" is established through standardized laboratory measurements and validated biological tests, not human expert interpretation of clinical images or data in a diagnostic context.

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

    • Not Applicable. See point 3. This concept applies to human-reviewed clinical data, not material property testing.

    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

    • Not Applicable. This is not an AI/SaMD device. No MRMC study was performed as it's typically for assessing the impact of AI on diagnostic accuracy.

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

    • Not Applicable. This is not an AI/SaMD device. "Standalone performance" refers to an AI algorithm's performance without human interaction.

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

    • Laboratory Standard Measurements and Biocompatibility Test Results: The "ground truth" for this device is derived from the results of standardized physical property tests (e.g., specific gravity measurements for water sorption, calibrated hardness testers for Shor hardness, optical measurements for depth of cure) and the results of validated biocompatibility assays following ISO 10993 standards.

    8. The sample size for the training set

    • Not Applicable. This is not an AI/SaMD device. There is no "training set" in the context of an AI model for this dental material. The material itself is manufactured and tested.

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

    • Not Applicable. See point 8.
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