PaX-i3D Ortho (TON-95LH) is a computed tomography x-ray system intended to produce cross-sectional images of the oral anatomy by reconstructing a three dimensional radiographic images from the same axial plane taken at different angles. It provides diagnostic details of the maxillofacial areas for a dental treatment in adult and pediatric dentistry. The system also acquires carpal images for orthodontic treatment. The device is operated and used by physicians, dentists, and x-ray technicians.
Device Story
Dental CBCT system; captures radiographic data of oral/maxillofacial anatomy using X-ray tube, generator, and CMOS digital detector. Transforms X-ray projections into 3D cross-sectional images and reconstructs 2D panoramic/cephalometric images. Operated by physicians, dentists, and X-ray technicians in clinical settings. Healthcare providers use viewing software (EzDent-i, Ez3D-i Ortho) to visualize anatomy; supports clinical decisions for oral surgery, implants, and orthodontics. Benefits include high-definition diagnostic imaging for treatment planning.
Clinical Evidence
Bench testing only. Performance evaluated via non-clinical tests including Modulation Transfer Function (MTF), Detective Quantum Efficiency (DQE), and Noise to Power Spectrum (NPS) to compare the new SSXI detector against the predicate. Compliance with IEC 60601 series (safety/EMC) and IEC 61223 series (CT image evaluation) confirmed. All test results were satisfactory.
Technological Characteristics
Dental CBCT system; CMOS digital X-ray detector (CT-Xmaru2430CF Master Plus); 50-120 kV tube voltage; 4-10 mA tube current; 0.5 mm focal spot; 2.8 mmAl filtration. Connectivity via DICOM 3.0. Software includes EzDent-i (2D) and Ez3D-i Ortho (3D) viewing programs. Universal power input (100-240V).
Indications for Use
Indicated for adult and pediatric patients requiring diagnostic imaging of the maxillofacial area for dental treatment planning and carpal imaging for orthodontic treatment.
Regulatory Classification
Identification
A computed tomography x-ray system is a diagnostic x-ray system intended to produce cross-sectional images of the body by computer reconstruction of x-ray transmission data from the same axial plane taken at different angles. This generic type of device may include signal analysis and display equipment, patient and equipment supports, component parts, and accessories.
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Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - WO66-G609 Silver Spring, MD 20993-0002
August 7, 2014
Vatech Co., Ltd. % Mr. David Kim Medical Device Regulatory Affairs Mtech Group 8310 Buffalo Speedway HOUSTON TX 77025
Re: K132983
Trade/Device Name: TON-95LH and PaX-i3D Ortho Regulation Number: 21 CFR 892.1750 Regulation Name: Computed tomography x-ray system Regulatory Class: II Product Code: OAS Dated: July 7, 2014 Received: July 9, 2014
Dear Mr. Kim:
We have reviewed your Section 510(k) premarket notification of intent to market the device referenced above and have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to legally marketed predicate devices marketed in interstate commerce prior to May 28, 1976, the enactment date of the Medical Device Amendments, or to devices that have been reclassified in accordance with the provisions of the Federal Food, Drug, and Cosmetic Act (Act) that do not require approval of a premarket approval application (PMA). You may, therefore, market the device, subject to the general controls provisions of the Act. The general controls provisions of the Act include requirements for annual registration, listing of devices, good manufacturing practice, labeling, and prohibitions against misbranding and adulteration. Please note: CDRH does not evaluate information related to contract liability warranties. We remind you, however, that device labeling must be truthful and not misleading.
If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 898. In addition, FDA may publish further announcements concerning your device in the Federal Register.
Please be advised that FDA's issuance of a substantial equivalence determination does not mean that FDA has made a determination that your device complies with other requirements of the Act or any Federal statutes and regulations administered by other Federal agencies. You must comply with all the Act's requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Part 801); medical device reporting (reporting of medical device-related adverse events) (21 CFR 803); good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820); and if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.
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If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please contact the Division of Industry and Consumer Education at its toll-free number (800) 638 2041 or (301) 796-7100 or at its Internet address
http://www.fda.gov/MedicalDevices/Resourcesfor You/Industry/default.htm. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR Part 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to
http://www.fda.gov/MedicalDevices/Safety/ReportaProblem/default.htm for the CDRH's Office of Surveillance and Biometrics/Division of Postmarket Surveillance.
You may obtain other general information on your responsibilities under the Act from the Division of Industry and Consumer Education at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address
http://www.fda.gov/MedicalDevices/ResourcesforYou/Industry/default.htm.
Sincerely yours.

for
Janine M. Morris Director Division of Radiological Health Office of In Vitro Diagnostics and Radiological Health Center for Devices and Radiological Health
Enclosure
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#### DEPARTMENT OF HEALTH AND HUMAN SERVICES Food and Drug Administration
# Indications for Use
510(k) Number (if known) K132983
#### Device Name PaX-i3D Ortho (TON-95LH)
Indications for Use (Describe)
PaX i3D Ortho (TON-95LH) is a computed tomography x-ray system intended to produce cross-sectional images of the oral anatomy by reconstructing a three dimensional radiographic images from the same axial plane taken at different angles. It provides diagnostic details of the maxillofacial areas for a dental treatment in adult and pediatric dentistry. The system also acquires carpal images for orthodontic treatment. The device is operated and used by physicians, dentists, and x-ray technicians.
Type of Use (Select one or both, as applicable)
X Prescription Use (Part 21 CFR 801 Subpart D)
Over-The-Counter Use (21 CFR 807 Subpart C)
#### PLEASE DO NOT WRITE BELOW THIS LINE – CONTINUE ON A SEPARATE PAGE IF NEEDED.
#### FOR FDA USE ONLY
Concurrence of Center for Devices and Radiological Health (CDRH) (Signature)
Smh.p)
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# Traditional 510(k) Summary
This summary of 510(k) safety and effectiveness information is being submitted in accordance with requirements of 21 CFR Part 807.92.
Date 510K summary prepared: July 7th, 2014
Submitter's Name, address, telephone number, a contact person:
| Submitter's Name : | Vatech Co., Ltd. |
|----------------------------------------------------|------------------------------------------------------------------------------|
| Submitter's Address: | 23-4, Seogu-Dong, Hwaseong-Si,<br>Gyeonggi-Do, 445-170,<br>Republic of Korea |
| Submitter's Telephone: | +82-31-379-9492 |
| Contact person: | Mr. Daniel Kim |
| Official Correspondent:<br>(U.S. Designated agent) | Dave Kim (davekim@mtech-inc.net) |
| Address: | 8310 Buffalo Speedway, Houston, TX 77025 |
| Telephone: | +1-713-467-2607 |
| Fax: | +1-713-583-8988 |
Name of the device, including the trade or proprietary name if applicable, the common or usual name and the classification name, if known:
| Trade/Proprietary Name: | PaX-i3D Ortho (TON-95LH) |
|-------------------------|--------------------------------------------------------------------------|
| Common Name: | Dental Computed Tomography X-ray System |
| Classification Name: | System, X-ray, Tomography, Computed, Dental(21CFR 892.1750,<br>Class II) |
| Product Code: | OAS |
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### Predicate Device:
| Manufacturer: | Vatech Co., Ltd |
|----------------|-----------------|
| Device Name: | PaX-Zenith3D |
| 510(k) Number: | K102196 |
### Device Description:
PaX-i3D Ortho (TON-95LH) is a dental radiographic imaging system with cone beam computed tomography (CBCT) to offer high definition digital diagnostic images in multi FOV for dental practitioners. Specifically designed for dental radiography of the teeth or jaws, TON-95LH is a complete dental X-ray system equipped with x-ray tube, generator and dedicated SSXI detector for dental CBCT radiography.
The PaX-i3D Ortho (TON-95LH) dental CBCT system is equipped with a CMOS digital Xray detector which is used to capture radiographic diagnostic image data of oral and maxillofacial anatomy and reconstruct a three dimensional (3D) image for dental treatments such as oral surgery, implant and orthodontic. The PaX-i3D Ortho (TON-95LH) dental CBCT system also can reconstruct 2D panoramic and cephalometric images from the same diagnostic image data which the system originally obtained.
#### Indication for use:
PaX-i3D Ortho (TON-95LH) is a computed tomography x-ray system intended to produce cross-sectional images of the oral anatomy by reconstructing a three dimensional radiographic images from the same axial plane taken at different angles. It provides diagnostic details of the maxillofacial areas for a dental treatment in adult and pediatric dentistry. The system also acquires carpal images for orthodontic treatment. The device is operated and used by physicians, dentists, and x-ray technicians.
#### Summary of the technological characteristics of the device compared to the predicate device:
The PaX-i3D Ortho (TON-95LH) dental CBCT system described in this 510(k) has the similar intended use and technical characteristics as PaX-Zenith3D of Vatech Co.,Ltd.
| Characteristic | Proposed<br>Vatech Co., Ltd.<br>PaX-i3D Ortho (TON-95LH) | Predicate<br>Vatech Co., Ltd.<br>PaX-Zenith3D |
|----------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 510(k) number | K132983 | K102196 |
| Indications<br>for use | PaX-i3D Ortho (TON-95LH)<br>is a computed tomography x-ray<br>system intended to produce cross-<br>sectional images of the oral<br>anatomy by reconstructing a three<br>dimensional radiographic images<br>from the same axial plane taken at<br>different angles. It provides<br>diagnostic details of the<br>maxillofacial areas for a dental<br>treatment planning in adult and<br>pediatric dentistry. The system also<br>utilizes carpal images for<br>orthodontic treatment. The device<br>is operated and used by physicians,<br>dentists, and x-ray technicians. | PaX-Zenith3D is a computed<br>tomography x-ray system<br>intended to take panoramic,<br>cross-sectional images of the<br>oral and craniofacial anatomy<br>and provide diagnostic<br>information for children and<br>adults clinical care in dentistry.<br>The device is operated and used<br>by x-ray technicians and dentists<br>including oral surgeons. |
| Performance<br>Specification | computed tomography | Panoramic and computed<br>tomography |
| Input Voltage | AC 100-240 V | 110V/230 V~ |
| Tube Voltage | 50-120 kV | 50-120 kV |
| Tube Current | 4 ~10 mA | 4 ~10 mA |
| Exposure Time | Max. 24 s | 9.7s-24 s |
| X-ray Source | SXR-130-15-0.5 | SXR-130-15-0.5 |
| X-ray Generator | DG-08B11S1 | EXG8 |
| Focal Spot Size | 0.5 mm | 0.5 mm |
| Slice Width | 0.1 mm min. | 0.1 mm min. |
| Total Filtration | 2.8 mmAl | 2.8 mmAl |
| Chin Rest | Equipped Headrest | Equipped Headrest |
| Performance<br>Specification | Computed tomography | Computed tomography |
| Mechanical | Compact design | Compact design |
| Electrical | LDCP logic circuit | LDCP logic circuit |
| Software | DICOM 3.0 Format compatible | DICOM 3.0 Format compatible |
| 2D Image Viewing<br>Program | EzDent-i | EasyDent |
| | | |
| 3D Image Viewing<br>Program | Ez3D-i Ortho | Ez3D Plus |
| Anatomical Sites | Maxillofacial | Maxillofacial |
| Image Receptor<br>(CMOS photodiode<br>array) | CT- Xmaru2430CF Master Plus | CT- Xmaru2430CF |
| | | Panoramic- Xmaru1501CF |
| Size of Active<br>Imaging Area | CT- 289.4 x 230.8 mm | CT- 288 x 238.4 mm |
| | - | Panoramic- 150.4 x 6 mm |
| Pixel Resolution | CT- 5 lp/mm -2x2 binning<br>2.5 lp/mm -4x4 binning | CT- 2.5 lp/mm |
| | - | Panoramic- 5 lp/mm |
| Pixel Size | CT- 99 μm-2x2 binning<br>198 μm-4x4 binning | CT- 200 μm |
| | - | Panoramic- 100 μm |
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# 510(k) Submission – PaX-i3D Ortho (TON-95LH)
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510(k) Submission - Pax-i3D Ortho (TON-95LH)
## Summary of Performance Testing:
The PaX-i3D Ortho (TON-95LH) dental CBCT system described in this 510(k) is similar to the predicate device in its indications for use, materials, safety characteristics, X-ray source.
Moreover, the following information further substantiates the substantial equivalence between two devices:
The fundamental technological characteristics of the subject and predicate device are the same.
Laboratory and clinical performance testing using the same test protocols as used for the cleared detectors was evaluated by qualified individuals employed by the
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### 510(k) Submission - PaX-i3D Ortho (TON-95LH)
sponsor to demonstrate that adequate design controls (according to 21 CFR 820.30) were in place.
For both devices, the differences are as follows.
A new SSXI detector, Xmaru2430CF Master Plus for PaX-i3D Ortho (TON-95LH) has different active areas compared with PaX-Zenith3D (K102196), the predicate device.
Change to Free Input Voltage: For the predicate device, changing the input voltage from 110V to 230V would require separate tools and electrical works whereas the new device is equipped with a new power board which is capable of handling the input power between 100 V and 240 V without a separate tool or electrical modification.
Non-clinical test and clinical consideration test were conducted for the PaX-i3D Ortho (TON-95LH) system's new sensor and compared with the predicate device with regard to Modulation Transfer Function (MTF), Detective Quantum Efficiency (DQE) and Noise to Power Spectrum (NPS). Based on the Non-Clinical Test results, even though the new SSXI detector differs in term of the pixel size and active area, the diagnostic image quality of the new sensor is equal or better than those of the predicate device and there is no significant difference in efficiency and safety.
## Safety, EMC and Performance Data:
Electrical, mechanical, environmental safety and performance testing according to standard IEC 60601-1(A1+A2, 1995), IEC 60601-1-1 (Ed. 2, 2000), IEC 60601-1-3 (Ed. 1, 1994), IEC 60601-2-7 (Ed. 2, 1998), IEC 60601-2-28 (Ed. 1, 1993), IEC 60601-2-32 (Ed. 1, 1994) and IEC 60601-2-44 (Ed. 2, 2002) were performed, and EMC testing were conducted in accordance with standard IEC 60601-1-2.
The manufacturing facility is in conformance with the relevant EPRC standards as specified in 21 CFR 1020.30, 31, and 33 and the records are available for review.
PaX-i3D Ortho (TON-95LH) meets the provisions of NEMA PS 3.1-3.18, Digital Imaging and Communications in Medicine (DICOM) Set.
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Non-clinical & Clinical considerations according to FDA Guidance "Guidance for the submissions of 510(k)'s for Solid State X-ray Imaging Devices" were performed.
Acceptance test and CT image evaluation report according to IEC 61223-3-4 and IEC 61223-3-5 were performed.
All test results were satisfactory.
## Conclusion:
In accordance with the Federal Food, Drug and Cosmetic Act, 21 CFR Part 807 and based on the information provided in this premarket notification. Vatech Co., Ltd. concludes that PaX-i3D Ortho (TON-95LH) is safe and effective and substantially equivalent to the predicate device as described herein.
END
Two short videos show you everything — or skip straight to the written tutorial if you'd rather read. You can reopen this any time from the Tutorial button in the top bar.
Part 1 — Search, results, and everyday workflows 16 min
Part 2 — Embeddings: the galaxy map 3 min
1. Search: exact and fuzzy
Type a phrase like "coronary artery calcification" into the search box. You get two kinds of results. Exact results match the literal phrase — prefix searches work ("coronary artery calcificati") but suffix searches do not. Fuzzy results match on the meaning and intent of your phrase rather than the exact words, and are sorted by relevance score. Hover over the Exact or Fuzzy badge on any row to see exactly why it matched.
Use the checkboxes above the results to narrow: SaMD keeps only software-only devices, AI / ML keeps only devices with AI.
Exact vs. fuzzy search: what's the difference?
Exact matches on the literal phrase (prefix search works, suffix does not). Fuzzy matches on the meaning and intent of the phrase rather than the exact words. Hover over the badge on any row to see why it matched.
You search "coronary artery calcification" and want only software devices with AI. What two filters do you apply?
Narrow by SaMD (software-only devices), then narrow by AI/ML (devices with AI).
2. The results table
Scroll right in the results table. The intended use is extracted for you — no need to open the PDF. The device story gives a high-level snapshot of what the device does and how it's used. The AI Performance sub-table shows each output name, acceptance criteria, observed values, and development/test dataset descriptions — the same format Innolitics uses for regulatory strategy outputs, and the fastest high-level fingerprint of an AI device. It is AI-generated but has been very reliable in practice.
Where do you find a device's intended use without opening the PDF?
Scroll right in the search results table. The intended use column is extracted for you; no need to dig into the 510(k) summary PDF.
What does the AI Performance sub-table show, and why is it useful?
Output name, acceptance criteria, observed values, development dataset description, and test dataset description. It's the same format we use for regulatory strategy output and Fast 510(k) input, and the fastest high-level fingerprint of an AI device. AI-generated but reliable in practice.
3. Judging fuzzy relevance
Fuzzy results trail off in relevance as you scroll. Use three signals to decide how far down to go: the fuzzy badge explanations, the intended use column, and whether your target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, you're past the relevant zone. A top hit with a low score (~0.4) and a stretched explanation is a hint the closest predicates are far away — the project may be headed for De Novo. Note the fuzzy search is a pattern match: it doesn't handle negation ("not") well, and hardware devices can appear — filter by SaMD/AI ML to cut them.
How do you judge how far down fuzzy search results to go?
Use the relevancy signals: the fuzzy badge explanations, the intended use column, and whether the target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, results are trailing off in relevancy.
4. Device detail page: chat and citations
Click a device name to open its detail page: device facts on the left, a chat window on the right. Ask something like "Describe the training data". The answer carries little citation bubbles — click one to jump to the highlighted passage in the source PDF, so you can verify every AI answer against the document. There's also a Download PDF button for sharing.
How do you verify an AI chat answer on the device detail page?
Click the citation bubbles to jump to the relevant highlight in the source document.
Reading rule for every project: how many summaries do you read in full?
At least the three most relevant 510(k) or De Novo summaries, in full. After that, use targeted chat questions to confirm your memory quickly. The tool supports this professional habit — it doesn't replace it.
5. Side-by-side comparison
Select multiple rows in the results table (aim for under ~10), then open the PDF Viewer tab. Ask one question — it goes to all selected devices in parallel, each with citations. This is the fastest way to compare and contrast devices: training data, PCCP scope, how they handled adding new scanners, and so on.
What does the side-by-side PDF viewer mode do?
Select multiple devices, open the PDF viewer tab, and ask one question (e.g., "Describe the training data"). It queries all selected devices simultaneously with citations, so you can compare and contrast quickly.
6. Collections
With rows selected, go to the Collections tab and create a labeled collection (e.g., "Cobb Angle Project"). Reload that selection any time — before a client call, pull up the collection and ask questions across all of its devices at once.
How do you save a set of selected devices for later use?
Select the rows, go to the Collections tab, and create a labeled collection (e.g., "Cobb Angle Project"). You can reload the selection anytime and carry it into the PDF viewer and other tabs that support selections.
7. Product codes and the regulations tree
Click a product code in the results to jump to it in the regulations tree — identification text, sibling product codes, and devices you can open in a PDF viewer on the right. Click a regulation number to see its identification, special controls, and related product codes. You can also search by product code or regulation number at the top of the tree. Always read the special controls if any exist for your device — it broadens your search and sharpens pre-kickoff research.
What can you do from the regulations tree view?
Browse product codes and regulation numbers, read the identification text and special controls, browse sibling product codes, open device PDFs on the right, and search by product code or regulation number at the top of the tree.
8. Chart view
Click Show Chart and segment by regulation number (or product code) to see which regulations dominate your result set. Clicking a regulation takes you into the regulations tree. Great for spotting that most matches are, say, hardware laparoscopic devices — a cue to go back and filter.
How do you see which regulations dominate a search result set?
Click "Show Chart" and segment by Regulation Number. Clicking a regulation takes you to the regulations tree.
9. The predicate graph
Open the Predicates tab for a family-tree view of predicate relationships. Click a node to trace its parents and children; selections from search carry over pre-selected. Commonly predicated devices are worth reading — a lot of people predicated them for a reason. The visual lineage is also handy on client calls, e.g. to show how a predicate family evolved and justify why your predicate still holds.
In the predicate graph, why are commonly predicated devices worth reading?
A lot of people predicated them for a reason. Clicking a node traces parents and children, and selections from search carry over pre-selected.
10. Embeddings: the galaxy map
The Embeddings tab plots every matching document in a 2-D "galaxy map" where semantically similar devices cluster together. Hover or click clusters to explore, and let AI label the clusters for you. Embeddings beat product codes for grouping: two devices can carry different product codes (LLZ vs. QIH) yet do the same thing — the embedding captures the meaning of the intended use and device story. This is also exactly how retrieval-augmented generation (RAG) works under the hood, and it makes a great visual on client calls.
Try it yourself
Head to the search page and work through a few of these AI/ML fuzzy searches to build intuition: perivascular fat on CT · aortic valve calcification opportunistic screening on noncontrast CT · breast cancer prediction on digital pathology slides · autism detection · gestational age prediction · a hearing aid that can also detect a pulse · foundation model based analysis of ECG · large language models · penetration test. Watch how the relevance scores, intended use, and AI Performance tables tell you when results stop being meaningful.