# K972407: Root Apex Locator

- Pathway: 510(k) (Traditional)
- Applicant: Toei Electric Co., Ltd.
- Decided: Sep 11, 1997 after 77 days
- Product code: LQY (Locator, Root Apex)
- Device class: U
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 1 generation back to K921979 (1993). 2 ancestors in all.
16 later devices descend from it; 1 cites it directly.
0 of 19 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K953867: Root Canal Length Measuring Device, J. Morita USA, Inc. (1995) Summary page 1.
- K921979: Root ZX, J. Morita USA, Inc. (1993) Summary page 1.

## Most influential descendants
- K022020: Justwo Model Tme-601 Root Apex Locator (2002), 15 descendants of its own
- K032743: Apex NRG (2004), 7 descendants of its own
- K030526: Pediguard Nerve Detector System (2004), 6 descendants of its own
- K123390: Pediguard Nerve Detector System (2013), 5 descendants of its own
- K063843: Apexnrg XFR (2007), 5 descendants of its own

## Indications for use
Measurement of the length of the root canal for the purpose of performing root canals and related dental procedures.

Source page: https://510kreport.com/device/K972407
Methodology: https://510kreport.com/methodology