EzOrtho is a software indicated for use by dentists who provide orthodontic treatment for image analysis, simulation, profilogram, VTO/STO and patient consultation. Results produced by the software's diagnostic, treatment planning and simulation tools are dependent on the interpretation of trained and licensed practitioners or dentists.
Device Story
EzOrtho is a 2D orthodontic analysis software for dentists; manages patient records and images; imports images from scanners or other imaging software (e.g., EzDenti). Features include landmark tracing, profilograms, superimposition, and VTO/STO simulation; assists in treatment planning and patient consultation via visual morphing and comparison tools. Operates on standard IBM-compatible PCs; provides diagnostic support; results require interpretation by licensed practitioners. Benefits include streamlined orthodontic workflow, improved patient communication, and automated cephalometric landmark identification to assist clinical decision-making.
Clinical Evidence
Bench testing only. Software verification and validation testing, including measurement accuracy tests, were performed to confirm performance, functionality, and reliability. The device met all pre-determined pass/fail criteria.
Technological Characteristics
Software-only device; no patient contact. Runs on IBM-compatible PC/network; supports Windows 7, 8, 10. Compatible with DICOM, BMP, JPG, PNG, TIF formats. Features include cephalometric tracing, implant simulation, and image measurement (linear/angle). Includes automated cephalometric landmark detection.
Indications for Use
Indicated for use by dentists providing orthodontic treatment for image analysis, simulation, profilogram, VTO/STO, and patient consultation. Results require interpretation by trained/licensed practitioners.
Regulatory Classification
Identification
A medical image management and processing system is a device that provides one or more capabilities relating to the review and digital processing of medical images for the purposes of interpretation by a trained practitioner of disease detection, diagnosis, or patient management. The software components may provide advanced or complex image processing functions for image manipulation, enhancement, or quantification that are intended for use in the interpretation and analysis of medical images. Advanced image manipulation functions may include image segmentation, multimodality image registration, or 3D visualization. Complex quantitative functions may include semi-automated measurements or time-series measurements.
Special Controls
*Classification.* Class II (special controls; voluntary standards—Digital Imaging and Communications in Medicine (DICOM) Std., Joint Photographic Experts Group (JPEG) Std., Society of Motion Picture and Television Engineers (SMPTE) Test Pattern).
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March 13, 2020
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EWOO SOFT Co., Ltd. % Ms. Priscilla Chung Regulatory Affairs Consultant LK Consulting Group USA, Inc. 1150 Roosevelt STE 200 IRVINE CA 92620
Re: K192888
Trade/Device Name: EzOrtho Regulation Number: 21 CFR 892.2050 Regulation Name: Picture archiving and communications system Regulatory Class: Class II Product Code: LLZ Dated: February 5, 2020 Received: February 11, 2020
Dear Ms. Chung:
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. Although this letter refers to your product as a device, please be aware that some cleared products may instead be combination products. The 510(k) Premarket Notification Database located at https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfpmn/pmn.cfm identifies combination product submissions. 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 of medical device-related adverse events) (21 CFR 803) for
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devices or postmarketing safety reporting (21 CFR 4, Subpart B) for combination products (see https://www.fda.gov/combination-products/guidance-regulatory-information/postmarketing-safety-reportingcombination-products); good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820) for devices or current good manufacturing practices (21 CFR 4, Subpart A) for combination products; and, if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.
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 https://www.fda.gov/medical-device-safety/medical-device-reportingmdr-how-report-medical-device-problems.
For comprehensive regulatory information about mediation-emitting products, including information about labeling regulations, please see Device Advice (https://www.fda.gov/medicaldevices/device-advice-comprehensive-regulatory-assistance) and CDRH Learn (https://www.fda.gov/training-and-continuing-education/cdrh-learn). Additionally, you may contact the Division of Industry and Consumer Education (DICE) to ask a question about a specific regulatory topic. See the DICE website (https://www.fda.gov/medical-device-advice-comprehensive-regulatoryassistance/contact-us-division-industry-and-consumer-education-dice) for more information or contact DICE by email (DICE@fda.hhs.gov) or phone (1-800-638-2041 or 301-796-7100).
Sincerely.
For
Thalia T. Mills, Ph.D. Director Division of Radiological Health OHT7: Office of In Vitro Diagnostics and Radiological Health Office of Product Evaluation and Quality Center for Devices and Radiological Health
Enclosure
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# Indications for Use
510(k) Number (if known) K192888
Device Name EzOrtho
Indications for Use (Describe)
EzOrtho is a software indicated for use by dentists who provide orthodontic treatment for image analysis, simulation, profilogram, VTO/STO and patient consultation. Results produced by the software's diagnostic, treatment planning and simulation tools are dependent on the interpretation of trained and licensed practitioners or dentists.
| Type of Use (Select one or both, as applicable) | |
|--------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------|
| <div> <span> <span style="text-decoration: overline;">X</span> Prescription Use (Part 21 CFR 801 Subpart D) </span> </div> | <div> <span> ☐ Over-The-Counter Use (21 CFR 801 Subpart C) </span> </div> |
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# 510(k) Summarv
(K192888)
This summary of 510(k) information is being submitted in accordance with requirements of 21 CFR Part 807.92.
#### 1. Date: 2/5/2020
### 2. Applicant / Submitter
Ewoosoft Co., Ltd. 801-ho, Vatechnetworks Bldg., 13, Samsung 1-ro 2-gil, Hwaseong-si, Gyeonggido , Republic of Korea Tel: +82 31 8015 6172 Fax: +82 31 8015 6196 Contact person: Young Seok Kim Email: eddie.kim@ewoosoft.com
#### 3. U.S. Designated Agent
Priscilla Chung LK Consulting Group USA, Inc. 1150 Roosevelt STE 200, Irvine, CA 92620 Tel: 714.202.5789 Fax: 714.409.3357 Email: juhee.c@LKconsultingGroup.com
#### 4. Trade/Proprietary Name:
EzOrtho
#### 5. Common Name:
Dental Imaging Software
#### 6. Classification:
System, image processing, radiological (21CFR 892.2050, Product code LLZ, Class 2, Radiology)
#### 7. Device Description:
EzOrtho is a 2D orthodontic analysis program developed by Ewoosoft. EzOrtho manages patient information and images for orthodontic analysis. This software also assists in orthodontic treatment by providing accurate image analysis, profilograms, superimpositions, and VTO (visualised treatment objective) and STO (surgical treatment objective). The analyzed results are saved in chart format so that you can easily store and track the treatment
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and records of each patient.
EzOrtho is designed to provide a simple and straightforward user interface.
- Managing Patients and Registering Images EzOrtho offers powerful features related to making schedules and managing patient appointments. In addition, EzOrtho enables you to import images from EzDenti(K190087, K172364, K163533, K161117, K150747), Explorer, or a scanner and easily calibrate the size of the image or arrange multiple film/photo images.
- . Analyzing and Tracing Images The Landmark Voice Guide and the improved Landmark Input Interface support more accurate and easier tracing.
- . Establishing Treatment Plans The Morphing feature enables you to predict how the treatment plan established may affect the face of a patient. In addition, the Compare feature enables you to establish a treatment plan by comparing photos before and after the treatment.
- . Assisting with Patient Consultation EzOrtho provides features to facilitate understanding and communication between doctors and patients during consultation. For example, the Superimposition feature displays the changes visually due to the treatment and the Gallery feature plays a slide show with multiple images of patients.
### 8. Indication for use:
EzOrtho is a software indicated for use by dentists who provide orthodontic treatment for image analysis, simulation, profilogram, VTO/STO and patient consultation. Results produced by the software's diagnostic, treatment planning and simulation tools are dependent on the interpretation of trained and licensed practitioners or dentists.
### 9. Predicate Device:
- Manufacturer: Ewoosoft Co., Ltd. ●
- Device: OrthoVision ●
- 510(k) Number: K173094
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## 10. Substantial Equivalence:
| Device name | EzOrtho v1.0 | OrthoVision v2.1 |
|-------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 510K number | K192888 | K173094 |
| Manufacturer | Ewoosoft | Ewoosoft |
| Indications for use | EzOrtho is a software indicated for use by<br>dentists who provide orthodontic<br>treatment for image analysis, simulation,<br>profilogram, VTO/STO and patient<br>consultation. Results produced by the<br>software's diagnostic, treatment planning<br>and simulation tools are dependent on thepractitioners or dentists. | OtrhoVision software is indicated for use by<br>orthodontists for image analysis, simulation,<br>profilogram, growth forecast, VTO/STO and<br>patient consultation. Results produced by the<br>software's diagnostic, treatment planning<br>and simulation tools are dependent on the<br>interpretation of trained and licensed<br>practitioners or dentists. |
| Platform | IBM-compatible PC or PC network | IBM-compatible PC or PC network |
| Operating System | Microsoft Window 7, 8, 10 | Microsoft Window 7, Window 8 |
| User Interface | Mouse, Keyboard | Mouse, Keyboard |
| Image Input Sources | Images can be scanned, loaded from<br>digital cameras or card readers, or<br>imported from a radiographic imaging<br>device | Images can be scanned, loaded from digital<br>cameras or card readers, or imported from a<br>radiographic imaging device |
| 32 bit / 62 bit | 32 bit / 62 bit | 32 bit / 62 bit |
| Image format | DICOM, BMP, JPG, PNG, TIF | DICOM, BMP, JPG, PNG, TIF |
| Patient Database | SQL | SQL |
| Compatibility | | |
| Includes Image<br>Measurement tools | Linear distance, angle | Linear distance, angle |
| Image viewing | Full, side by side, thumbnail | Full, side by side, gallery, thumbnail |
| Image manipulation | Grayscale, invert, emboss, brightness,<br>contrast, gamma, sharpen, median,<br>despeckle, hue, saturation, equalize flip,<br>mirror, masking, rotate, annotation,<br>cephalometric tracing, implant<br>simulations | Grayscale, invert, emboss, brightness,<br>contrast, gamma, sharpen, median,<br>despeckle, hue, saturation, equalize flip,<br>mirror, masking, rotate, annotation,<br>cephalometric tracing, ceph growth<br>projections, implant simulations |
| Cephalometric<br>tracing | In addition to the user-configured<br>analysis, standard orthodontic tracing<br>analysis include:<br>Downs<br>Jarabek<br>McNamara<br>Ricketts<br>Jefferson | In addition to the user-configured analysis,<br>standard orthodontic tracing analysis<br>include:<br>Downs<br>Jarabek<br>McNamara<br>Ricketts<br>Jefferson |
| Implant module | Generic | Generic |
| 3D imaging<br>capability | None. | None. |
| Image annotation | Text, paint, ellipse, pointer, select, draw,<br>magnify, line, rectangle, ruler, protractor,<br>brush, select region, copy / paste | Text, paint, ellipse, pointer, select, draw,<br>magnify, line, rectangle, polygon, ruler,<br>protractor, smile library, smudge, brush, |
The EzOrtho v1.0 described in this 510(k) has the same indications for use and the same technical characteristics as the OrthoVision v2.1(K173094).
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The EzOrtho v1.0 are substantially equivalent to the predicate device, having the same indications for use and functionalities like operation software, computer platform, picture archiving and communication format, image format, image processing features, windowing, image edit, measurements and manipulation.
The difference between the subject device and the predicate device is the UVUX design, and also some of the additional functions have been removed from the subject device such as gallery, ceph growth projections, and some of the annotation features. It has been found that these functions and features are not really used by users so we decided to remove them to improve usability for ease of use. We believe this difference does not raise a question in substantial equivalence, because these features are merely additional and does not affect the device to achieve the intended use. The other difference is that an automatic cephalometric tracing feature is added to the subject device. With this function, the SW automatically input the cephalometric landmarks for user convenience. The users can still adjust the points manually when necessary. We performed the validation test to evaluate the accuracy of this auto feature.
Based on the results of software validation and performance tests, we conclude that the subject device is substantially equivalent to the predicate device.
#### 11. Technological Characteristics:
EzOrtho is a software device that does not contact the patient, nor does it control any life sustaining devices. Results produced by the software's diagnostic, treatment planning tools are dependent on the interpretation of trained and licensed radiologists, clinicians and referring physicians as an adjunctive to standard radiology practices for diagnosis.
#### 12. Performance Data:
SW verification/validation and the measurement accuracy test were conducted to establish the performance, functionality and reliability characteristics of the modified devices. The device passed all of the tests based on pre-determined Pass/Fail criteria.
#### 13. Conclusion:
The subject device is substantially equivalent in the areas of technical characteristics, general function, application, and indications for use. The new device does not introduce a fundamentally new scientific technology, and the device has been validated through system level test. Therefore, we conclude that the subject device described in this submission is substantially equivalent to the predicate device.
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.