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"BPA-Free Pit and Fissure Sealant" is indicated for the covering and sealing of pits and fissures in the occlusal surfaces of posterior teeth to aid in the resistance to caries in those surfaces.

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I'm sorry, but without further context, I cannot fulfill your request. The provided text is a letter from the FDA regarding a premarket notification for a medical device (BPA-Free Pit and Fissure Sealant); it does not contain information about acceptance criteria or a study that proves the device meets those criteria.

To help you, I would need a document that describes:

• The specific acceptance criteria for the device (e.g., performance metrics, thresholds).
• Details of a study conducted to evaluate the device against these criteria.
• Information about the study's methodology, sample size, ground truth establishment, and expert involvement.

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Granitec® Dual-Cure Core Build-Up is indicated for direct build-up of the crowns of teeth that have been badly broken down and are in need of a prosthetic crown in order to regain function. It is especially indicated for use under esthetic full porcelain and composite crowns, onlays and inlays where the underlying tooth structure and core restoration will show through the esthetic veneer. It can be used on vital or de-vital, endodontically treated teeth. It may be used with pins and posts and should be bonded to the tooth with a bonding agent.

N'Durance Dimer Core is indicated for direct build-up of the crowns of teeth that have been badly broken down and are in need of a prosthetic crown in order to regain function. It is especially indicated for use under esthetic full porcelain and composite crowns, onlays and inlays where the underlying tooth structure an d core restoration will show through the esthetic veneer. It can be used on vital or de-vital, endodontically treated teeth. It may be used with pins and posts and should be bonded to the tooth with a bonding agent.

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This document is largely a 510(k) clearance letter from the FDA for two dental devices, Granitec® Dual-Cure Core Build-Up and N'Durance Dimer Core. It states that the devices are substantially equivalent to legally marketed predicate devices.

The letter itself does not contain information about acceptance criteria or a study that proves the device meets specific acceptance criteria. It is a regulatory approval document based on a finding of substantial equivalence, not a detailed report of performance testing.

Therefore, I cannot provide the requested information from the provided text. The document outlines the FDA's decision based on a review of the manufacturer's submission, but the details of the performance study and acceptance criteria are not included in this letter.

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