Cleared Traditional

K771921 - HYDRON ROOT CANAL FILLING SYSTEM (FDA 510(k) Clearance)

Class II Dental device cleared through predicate-based substantial equivalence - typically does not require clinical trials.

K771921 · National Patent Development Corp. · Dental device
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Nov 1977
Decision
34d
Days
Class 2
Risk

K771921 is an FDA 510(k) clearance for the HYDRON ROOT CANAL FILLING SYSTEM. Classified as Resin, Root Canal Filling (product code KIF), Class II - Special Controls.

Submitted by National Patent Development Corp. (Mchenry, US). The FDA issued a Cleared decision on November 15, 1977 after a review of 34 days - a notably fast clearance cycle.

This device falls under the Dental FDA review panel, regulated under 21 CFR 872.3820 - the FDA dental device regulatory framework. The Traditional 510(k) pathway establishes clearance through substantial equivalence to a legally marketed predicate device, without requiring clinical trial data.

Device pattern: Fast-track predicate clearance. Standard predicate reliance. The short review cycle indicates strong predicate alignment - the FDA found sufficient equivalence without extended technical review.

View all National Patent Development Corp. devices

Submission Details

510(k) Number K771921 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received October 12, 1977
Decision Date November 15, 1977
Days to Decision 34 days
Submission Type Traditional
Review Panel Dental (DE)
Summary -
Third-party Review No - reviewed directly by FDA
Regulatory Context
Review time vs. panel average
93d faster than avg
Panel avg: 127d · This submission: 34d
Pathway characteristics
Predicate-based equivalence. No clinical trials required.

Device Classification

Product Code KIF Resin, Root Canal Filling
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 872.3820
What this classification means

Class II devices require demonstration of substantial equivalence to a legally marketed predicate device. This pathway does not require clinical trials - it relies on engineering equivalence and performance data. Most Dental devices follow this clearance model.

Regulatory Peers - KIF Resin, Root Canal Filling

All 142
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