510(k) Report

510(k) · Cleared

Cleared

Difoti System

K991098510(k) TraditionalCleared Jun 30, 199990-day reviewClass I21 CFR 872.6640

Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly, last Nov 3, 2026

Electro-Optical Sciences, Inc. · EIA Unit, Operative Dental

Cleared on Jun 30, 1999 as substantially equivalent to K933455 (Schick Technologies, Inc., 1994) and 1 other predicate after a 90-day review. Its family tree reaches back 1 generation to 1994. 10 later devices descend from it.

Decided
Jun 30, 1999
Review
90 days
Class
Class I
Product code
EIA
Recalls
None
Predicates
2

Its longest line of descent runs back 1 generation to K933455 (1994). 2 ancestors in all. 10 later devices descend from it, 2 citing it directly.

Other ancestors, by year clearedDescendants, by year cleared 1996: 1 other ancestor2007: 1 descendant cleared2004: 1 descendant cleared2017: 1 descendant cleared2013: 1 descendant cleared2019: 1 descendant cleared2020: 1 descendant cleared2022: 1 descendant cleared2025: 1 descendant cleared2024: 1 descendant cleared2026: 1 descendant clearedK933455 · Computed Oral Radiology System · Schick Technologies, Inc. · 19941990200020102020
Other ancestors, by generationDescendants, by generation 1 generation back: 1 other ancestor 1 generation forward: 2 descendants2 generations forward: 2 descendants3 generations forward: 3 descendants4 generations forward: 2 descendants5 generations forward: 1 descendant K933455 · Computed Oral Radiology System · Schick Technologies, Inc. · 19940+5
  1. Root · 1 generation backK933455 Computed Oral Radiology SystemSchick Technologies, Inc. · 1994
  2. This deviceK991098 Difoti SystemElectro-Optical Sciences, Inc. · 1999
  3. Descendant · cites it directly · 8 of its ownK043068 Difoti Usb 2.0 SystemElectro-Optical Sciences, Inc. · 2004
  4. Descendant · 2 generations on · 7 of its ownK123402 DiagnocamKaltenbach & Voigt GmbH · 2013
  5. Descendant · 2 generations on · 4 of its ownK172007 CamX Triton HD Proxi HeadDuerr Dental AG · 2017
  6. Descendant · 3 generations on · 2 of its ownK193659 iTero Element 5DAlign Technology, Inc. · 2020
  7. Descendant · 4 generations on · 1 of its ownK240573 iTero Lumina™ ProAlign Technology, Ltd. · 2024

Showing 5 of 10 descendants. See all descendants

Descendants cleared per year

2004: 12007: 12013: 12017: 12019: 12020: 12022: 12024: 12025: 12026: 1
2004high 1 (2004) · low 0 (2005)2026

Most influential descendants

Showing 5 of 10 · See all
  • K043068Difoti Usb 2.0 SystemElectro-Optical Sciences, Inc. · 2004 · cites it directly8descendants
  • K123402DiagnocamKaltenbach & Voigt GmbH · 2013 · 2 generations on7descendants
  • K172007CamX Triton HD Proxi HeadDuerr Dental AG · 2017 · 2 generations on4descendants
  • K193659iTero Element 5DAlign Technology, Inc. · 2020 · 3 generations on2descendants
  • K240573iTero Lumina™ ProAlign Technology, Ltd. · 2024 · 4 generations on1descendant
View FIG. 1 as a table

Line of descent and top descendants

GenerationNumberDeviceApplicantDecidedRecalls
−1K933455Computed Oral Radiology SystemSchick Technologies, Inc.1994—
0 (this device)K991098Difoti SystemElectro-Optical Sciences, Inc.1999—
+1K043068Difoti Usb 2.0 SystemElectro-Optical Sciences, Inc.2004—
+2K123402DiagnocamKaltenbach & Voigt GmbH2013—
+2K172007CamX Triton HD Proxi HeadDuerr Dental AG2017—
+3K193659iTero Element 5DAlign Technology, Inc.2020—
+4K240573iTero Lumina™ ProAlign Technology, Ltd.2024—

Other ancestors by year cleared

Year clearedDevicesWith a Class I recall
199610

Descendants by year cleared

Year clearedDevicesWith a Class I recall
200410
200710
201310
201710
201910
202010
202210
202410
202510
202610
FIG. 1 — Lineage of K991098, 1994–2026Source: FDA 510(k) summaries, read by 510(k) Report · How lineage is built

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Notable FDA decisions, review times and new Class I recalls. See an issue.

Sources: FDA 510(k) database (decision fields), the FDA summary (predicates and indications), FDA recall and enforcement reports, and MAUDE; processed by 510(k) Report. Verify on FDA.gov · Methodology and accuracy.

Planning a device in EIA? A 510(k) Report weighs predicate choices, recall history and review times for a new device like this one.

Top candidate predicates for a new EIA device

  1. #1 K231845 Dental unit Model: Marescore 14.4 · 6 generations · no Class I recall
  2. #2 Held for the reportin the report
  3. #3 Held for the reportin the report
Get a 510(k) Report

What was it cleared against? (3)

Devices the submitter claimed this one is substantially equivalent to (*), and reference devices cited for a specific test or feature (†), as written in the FDA summary.

TypeNumberDeviceApplicantDecidedRecalls
*K933455Computed Oral Radiology System
Summary page 1
…640). Predicate Devices: Fiberoptic transillumination (FOTI) fiberoptic dental imaging systems - preamendment, various manufacturers Computer Oral Radiography System (K933455) and CDR-CAM (K 963778) Schick Technologies, Inc. Product Description: The DIFOTI device is a dental examination system that ut…
Schick Technologies, Inc.1994—
*K963778CDR-Cam
Summary page 1
…es: Fiberoptic transillumination (FOTI) fiberoptic dental imaging systems - preamendment, various manufacturers Computer Oral Radiography System (K933455) and CDR-CAM (K 963778) Schick Technologies, Inc. Product Description: The DIFOTI device is a dental examination system that utilizes visible light de…
Schick Technologies, Inc.1996—
*—Fiberoptic transillumination (FOTI) fiberoptic dental imaging systems - preamendment…
Named without a submission number
—

Also cleared against K933455: 9 other devices →

What descends from it? (10)

2 later devices cite it directly; ranked here by how many devices descend from each in turn.

NumberDeviceApplicantDecidedDescendants
K043068Difoti Usb 2.0 SystemElectro-Optical Sciences, Inc.20048
K063321D-Carie/Detectar, Models N121, N123, N133, N134, N135 & N138Neks Technologies, Inc.20070

Has anything in its family been recalled? (0 Class I)

No FDA recall names this device.

No ancestor or descendant has a Class I recall.

What does this lineage say?

  • None of the 2 ancestors has a recall.
  • Of its descendants, K043068 (Electro-Optical Sciences, Inc., 2004) has gone furthest, with 8 descendants of its own.
  • 9 other devices also cite its predicate K933455.

How does its category compare?

All EIA devices

EIA Unit, Operative Dental: FDA decisions, review times, recalls and adverse event reports over 20 years.

FDA decisions per year · EIA

7in 2025

2007: 32008: 62009: 32010: 32011: 52012: 22013: 22014: 22015: 72016: 42017: 12018: 22019: 22020: 12022: 32023: 32024: 32025: 72026 (partial year): 2
2007high 7 (2015) · low 0 (2021)2026

2026 to Oct 25, outlined.

Median 510(k) review, days · EIA

178in 2025

2007: 90 days median2008: 72 days median2009: 109 days median2010: 270 days median2011: 150 days median2015: 214 days median2016: 182 days median2022: 265 days median2023: 686 days median2024: 251 days median2025: 178 days median
2007high 686 (2023) · low 72 (2008)2026

Receipt to decision; years with fewer than 3 clearances left blank.

Recalls per year · EIA

1in 2013

2012: 12013: 1
2007high 1 (2012) · low 0 (2007)2026

Class I (0 since 2007) Class II/III not classified

Adverse event reports per year · EIA

47in 2025

2010: 22011: 32012: 72013: 62014: 2552015: 4522016: 1512017: 642018: 732019: 682020: 482021: 492022: 442023: 532024: 532025: 47
2007high 452 (2015) · low 0 (2007)2025

MAUDE reports naming product code EIA, not matched to any one device; reports are not rates.

View these four charts as a table
YearDecisionsMedian 510(k) review, daysRecalls (Class I)MAUDE reports
200739000
200867200
2009310900
2010327002
2011515003
20122—17
20132—16
20142—0255
201572140452
201641820151
20171—064
20182—073
20192—068
20201—048
20210—049
20223265044
20233686053
20243251053
20257178047
20262—0—

What is it indicated for?

The DIFOTI System for Dental Examinations is indicated for detection of frank or incipient caries lesions above the gum line, and for monitoring the progression of such lesions.

Indications for use read by OCR from a scanned FDA summary, so letters may be misread. Check the PDF before quoting it.

Cite this page

510(k) Report. “K991098: Difoti System.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K991098

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Record history
  • FDA decision record loaded May 2, 2026
  • Summary read Oct 13, 2026 (extraction version 9eaa42aa01ed)
  • Lineage and recalls computed Nov 3, 2026
  • Page last updated Nov 3, 2026