510(k) · Cleared
ClearedPax-UNI3D, PHT-7500
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
VATECH Co., Ltd. · OAS X-Ray, Tomography, Computed, Dental
Cleared on Aug 28, 2012 as substantially equivalent to K090467 (VATECH Co., Ltd., 2010) after a 110-day review. Its family tree reaches back 4 generations to 1997.
- Decided
- Aug 28, 2012
- Review
- 110 days
- Class
- Class II
- Product code
- OAS
- Recalls
- None
- Predicates
- 1
Its longest line of descent runs back 4 generations to K973642 (1997). No later device cites it as a predicate yet.
- Root · 4 generations backK973642 Orthopantomograph OP100 and Orthoceph OC100Instrumentarium Imaging, Inc. · 1997
- 3 generations backK063773 Volumetric TomographyInstrumentarium Dental, Inc. · 2007
- 2 generations backK082350 PAX-500VATECH Co., Ltd. · 2008
- 1 generation backK090467 Digital X-Ray Imaging System, Model Pax-UNI3DVATECH Co., Ltd. · 2010
- This deviceK121400 Pax-UNI3D, PHT-7500VATECH Co., Ltd. · 2012
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −4 | K973642 | Orthopantomograph OP100 and Orthoceph OC100 | Instrumentarium Imaging, Inc. | 1997 | — |
| −3 | K063773 | Volumetric Tomography | Instrumentarium Dental, Inc. | 2007 | — |
| −2 | K082350 | PAX-500 | VATECH Co., Ltd. | 2008 | — |
| −1 | K090467 | Digital X-Ray Imaging System, Model Pax-UNI3D | VATECH Co., Ltd. | 2010 | — |
| 0 (this device) | K121400 | Pax-UNI3D, PHT-7500 | VATECH Co., Ltd. | 2012 | — |
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 OAS? 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 OAS device
- #1 K213226 RCT700score 18.0 · 13 generations · no Class I recall
- #2 Held for the reportin the report
- #3 Held for the reportin the report
What was it cleared against? (1)
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.
| Type | Number | Device | Decided |
|---|---|---|---|
| * | K090467 | Digital X-Ray Imaging System, Model Pax-UNI3DSummary page 2…vice: Manufacturer Vatech Co., Ltd Device .PaX-Uni3D 5 10(k) Number K090467 (Decision Date-Jan. 8, 2010) Substantial Equivalence: PaX-UnI3D (PHT-7500) described in this 510(k) has the similar inten… | 2010 |
What descends from it?
No later submission names this one as a predicate yet.
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?
- The line of descent spans 15 years and passes through 3 companies; a new generation was cleared every 2.6 years on median.
- None of the 4 ancestors has a recall.
How does its category compare?
All OAS devicesOAS X-Ray, Tomography, Computed, Dental: FDA decisions, review times, recalls and adverse event reports over 20 years. 2012, this device’s year, is highlighted.
FDA decisions per year · OAS
9in 2025
2026 to Oct 25, outlined.
Median 510(k) review, days · OAS
144in 2025
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · OAS
3in 2025
Class I (0 since 2007) Class II/III not classified
Adverse event reports per year · OAS
1in 2025
MAUDE reports naming product code OAS, not matched to any one device; reports are not rates.
View these four charts as a table
| Year | Decisions | Median 510(k) review, days | Recalls (Class I) | MAUDE reports |
|---|---|---|---|---|
| 2007 | 2 | — | 0 | 0 |
| 2008 | 2 | — | 0 | 1 |
| 2009 | 2 | — | 0 | 0 |
| 2010 | 1 | — | 0 | 0 |
| 2011 | 6 | 168 | 0 | 0 |
| 2012 | 7 | 110 | 0 | 0 |
| 2013 | 10 | 155 | 0 | 0 |
| 2014 | 5 | 170 | 0 | 0 |
| 2015 | 5 | 164 | 1 | 0 |
| 2016 | 12 | 154 | 0 | 0 |
| 2017 | 4 | 209 | 0 | 0 |
| 2018 | 11 | 57 | 0 | 0 |
| 2019 | 7 | 55 | 0 | 1 |
| 2020 | 9 | 113 | 0 | 0 |
| 2021 | 11 | 92 | 0 | 0 |
| 2022 | 6 | 105 | 0 | 1 |
| 2023 | 12 | 77 | 0 | 1 |
| 2024 | 4 | 129 | 0 | 2 |
| 2025 | 9 | 144 | 3 | 1 |
| 2026 | 9 | 77 | 0 | — |
What is it indicated for?
The PaX-Uni3D is a computed tomography x-ray system which is a diagnostic x-ray system intended to produce panoramic, cephalometric and cross-sectional images for dental examination and diagnosis of diseases of the teeth, jaw and oral structure by computer reconstruction of x-ray transmission data from the same axial plane taken at different angles.
Indications for use read by OCR from a scanned FDA summary, so letters may be misread. Check the PDF before quoting it.
https://510kreport.com/device/K121400 · printed Nov 6, 2026
Cite this page
510(k) Report. “K121400: Pax-UNI3D, PHT-7500.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K121400
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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