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510(k) Data Aggregation

    K Number
    K980018
    Device Name
    CRISTOBAL
    Date Cleared
    1998-05-19

    (137 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

    To construct cosmetic prosthetic dental restoratives for use in fixed restorations with or without metal frameworks to include:

    • single crowns,
    • telescope crowns,
    • conus crowns,
    • bridges,
    • Maryland bridges,
    • bridges on implants,
    • inlays,
    • onlays
    • facettes (laminate veneers), and
    • restorations.
    Device Description

    CRISTOBAL consists of a series of layered composite restorative glass strength materials, combining the benefit of porcelain, composite and dental alloys, whose combined properties of wear resistance, flexural strength, maximum compressive strength and bulk modulus, make it suitable for all types of fixed cosmetic prosthetic restorations. CRISTOBAL offers the patient a tooth colored occlusal surface with the feeling of natural teeth.

    CRISTOBAL is subject to complete polymerization for optimal reactions of the various materials. Due to the fact that the light curing material of CRISTOBAL is radioand its matrix has a very high content in inorganic particles (barium opaque. borosilicate), it allows for the production of fixed prostheses with functional, mechanical, and cosmetic longevity.

    CRISTOBAL is composed of silanized barium borosilicate particles, a non-fracturable filler material, which are closely packed (74.2 weight percent) providing optimal silanization and cohesion of glass thereby ensuring protection against fracture together, with strong resistance to damage. With the matrix of Bis-GMA, TEDMA and UDDMA, these elastic memory properties also ensure damage resistance.

    AI/ML Overview

    Despite the request to describe the acceptance criteria and the study that proves the device meets the acceptance criteria, the provided text does not contain information about acceptance criteria or a study designed to prove the device meets specific performance thresholds.

    Instead, the document is a 510(k) Pre-market Notification Summary for a dental restorative material called CRISTOBAL. The primary purpose of this document is to demonstrate "substantial equivalence" to legally marketed predicate devices, not to present a standalone performance study against pre-defined acceptance criteria.

    Therefore, most of the requested information cannot be extracted from the provided text.

    Here's an attempt to address the points based on the available information, highlighting where the information is not present:


    1. Table of Acceptance Criteria and Reported Device Performance

    As stated above, the document does not define specific "acceptance criteria" against which CRISTOBAL was tested in a dedicated study. Instead, it compares CRISTOBAL's properties to those of two predicate devices to demonstrate substantial equivalence.

    PropertyPredicate Device 1 (Kulzer DENTACOLOR)Predicate Device 2 (Heraeus Kulzer ARTGLASS)CRISTOBAL (Reported Performance)
    Bending/Flexural (MPa)70-75120155
    Modulus Flexibility (MPa)3300 - 35009 0008 500
    Comprehensive (MPa)350Not Available350
    Vickers-Hardness (N/mm²)400590670
    Fracture Damage during Vickers Hardness Tests (mm²)Not AvailableNot Available0.245
    Abrasion (µm/year)Not AvailableGood
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