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Multi-Unit DAS System abutments are intended for use with dental implants as a support for single-unit or multi-unit prostheses in the maxillary or mandibular arch of a partially or fully edentulous patient.

Multi-Unit DAS System abutments are designed for retention of single-unit and multi-unit restorations. The multi-unit abutments are provided in a straight design (no angulation in the base portion) that threads directly to the OEM implant. For each of the compatible OEM implant lines, the multi-unit abutments are provided with gingival heights ranging from 1 mm to 5 mm, a prosthetic platform diameter of 4 mm, and a prosthetic post height of 1.4 mm. The multi-unit abutments are the base of a two-piece abutment. The second piece is a metal coping, called a Ti-Base in this submission, that attaches to the multi-unit abutment (not directly to an implant). For permanent restorations a zirconia superstructure is attached to the Ti-Base, and additional gingival height and angulation may be provided in the zirconia superstructure.

The subject device metal copings (Ti-Bases) include: a straight, prepable design with an additional gingival height of 1.5 mm and a prepable 9 mm prosthetic post; and Dynamic Ti-Bases in three (3) designs, each with an additional gingival height of 0.5 mm and a cut-out in the prosthetic post to accommodate a restoration with an angled screw channel when clinically necessary. The Dynamic Ti-Base prosthetic post heights are 4.5 mm (maximum height) / 3.0 mm (cut-out height), and 9.0 mm/3.5 mm. Multi-Unit DAS System Ti-Bases with a 9.0 mm post height may be shortened to no less than 4 mm for a single-unit restoration. The prepable Ti-Base has a platform diameter of 4 mm (platform to the multi-unit abutment) and a prosthetic platform diameter of 4 mm. The Dynamic Ti-Bases have a platform diameter of 4 mm (platform to the multi-unit abutment) and a prosthetic platform diameter of 4.15 mm.

The compatibility between the subject device abutments and the OEM implants listed in the Indication for Use Statement was established by reverse engineering analysis of the OEM implants, OEM abutments, and OEM abutment screws.

All subject device abutments and abutment screws are made of titanium alloy (Ti-6Al-4V) conforming to ASTM F136 and ISO 5832-3.

All zirconia copings (superstructures) for use with the subject device Dynamic Ti-Base will be made at a Talladium España, SL validated milling center under FDA quality system regulations, and the material will conform to ISO 13356.

The design parameters for the CAD-CAM zirconia superstructure for the Multi-Unit DAS System are:

Minimum wall thickness - 0.25 mm

Minimum post height for single-unit restorations - 4.0 mm

Maximum gingival height in the zirconia superstructure - 5.24 mm for compatible Biomet 31 OSSEOTITE® Certain®, MegaGen AnyRidge, NobelActive®, and Zimmer Tapered Screw-Vent® implants; 5.76 mm for compatible Astra Tech OsseoSpeed TX implants

Minimum gingival height - 0.5 mm (in the Ti-Base)

Maximum angulation - 30° for compatible Biomet 3i OSSEOTITE® Certain®, MegaGen AnyRidge, NobelActive®, and Zimmer Tapered Screw-Vent® implants; 25° for compatible Astra Tech OsseoSpeed TX implants

The recommended cement for bonding the zirconia superstructure to the Dynamic TiBases to create the final two-piece abutment is G-CEM LinkAce™, cleared as GAM-200 in K120243.

Here's a breakdown of the acceptance criteria and study information for the Multi-Unit DAS System:

1. Table of Acceptance Criteria and Reported Device Performance

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

• Mechanical Testing (ISO 14801) & Sterilization Validation: The document does not explicitly state the sample sizes used for these tests. For ISO 14801, typically a statistically significant number of samples are tested to demonstrate fatigue resistance, but the exact number isn't provided. For sterilization, typically multiple runs with biological indicators are performed.
• Data Provenance: The document does not specify the country of origin for the data for specific tests, but the manufacturer, Talladium España, SL, is located in Lleida, Spain. The data is non-clinical.

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

• This information is not applicable (N/A) as the submission details non-clinical data (mechanical testing, material specifications, biocompatibility, sterilization, MR safety analysis) rather than studies involving human expert assessment of images or clinical outcomes.

4. Adjudication method for the test set

• N/A, as no expert adjudication for medical diagnoses/interpretations was conducted due to the non-clinical nature of the studies.

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 MRMC comparative effectiveness study was done. This is a medical device for dental implants, not an AI software intended for diagnostic assistance. The document explicitly states: "No clinical data were included in this submission."

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

• No standalone algorithm performance study was done. This is a physical medical device, not an algorithm.

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

• Mechanical Testing: Ground truth is defined by the ISO 14801 standard and the manufacturer's performance specifications.
• Biocompatibility: Ground truth is established by the cellular responses and lack of toxicity as defined by ISO 10993-5.
• Material Composition: Ground truth is defined by the ASTM F136 and ISO 5832-3 standards.
• Sterilization: Ground truth is defined by the Sterility Assurance Level (SAL) of 10^-5, validated against microbiological indicators as per ANSI/AAMI/ISO 17665.
• MR Safety: Ground truth is established by scientific rationale and published literature, determining the device's behavior in an MR environment.
• Compatibility with OEM Implants: Ground truth is established by the precise measurements and design characteristics obtained through reverse engineering analysis of the OEM implants and their components.

8. The sample size for the training set

• N/A. There is no AI component or machine learning model that requires a training set for this device.

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

• N/A. There is no AI component or machine learning model that requires a training set for this device.

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