K133706 · Zl Microdent-Attachment GmbH & Co. KG · DZE · Aug 21, 2014 · Dental
Device Facts
Record ID
K133706
Device Name
ZL MICRODENT NATURAL LOCK IMPLANT SYSTEM
Applicant
Zl Microdent-Attachment GmbH & Co. KG
Product Code
DZE · Dental
Decision Date
Aug 21, 2014
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 872.3640
Device Class
Class 2
Attributes
Therapeutic
Indications for Use
The NaturaLLock implant system is an endosseous dental implant system made of titanium. NaturaLLock implants are indicated for the support and retention of fixed single tooth and fixed partial denture restorations in the molar, premolar, cuspid, and incisor regions of partially edentulous jaws. NaturaLLock implants may be loaded immediately in the anterior mandibular arch if four are splinted together with a bar. NaturaLLock implants may be immediately restored with a temporary prosthesis that is not in functional occlusion.
Device Story
One-piece endosseous dental implant system; integrates implant and abutment sections. Features self-tapping thread; tapered body; axially directed grooves on implant head. Used in dental practices by qualified oral/maxillofacial surgeons or implantologists. Implants surgically placed in jaw bone to support prosthetic restorations. System includes surgical instruments, drills, and drill guide sleeves. Provides stable foundation for fixed single or partial dentures; allows immediate loading in anterior mandibular arch if splinted with bar; supports immediate temporary non-functional restoration. Benefits patient by restoring chewing function and aesthetics.
Clinical Evidence
Bench testing only. No clinical data provided. Testing included biocompatibility (ISO 10993), cleanliness, cytotoxicity, sterilization, and packaging validation. Performance testing confirmed compliance with acceptance criteria and equivalence to predicate devices.
Indicated for support and retention of fixed single tooth and fixed partial denture restorations in molar, premolar, cuspid, and incisor regions of partially edentulous jaws. Contraindicated in patients with inadequate bone quality/width/height, systemic health issues (e.g., diabetes, smokers), or allergies to implant components.
Regulatory Classification
Identification
An endosseous dental implant is a prescription device made of a material such as titanium or titanium alloy that is intended to be surgically placed in the bone of the upper or lower jaw arches to provide support for prosthetic devices, such as artificial teeth, in order to restore a patient's chewing function.
Special Controls
*Classification.* (1) Class II (special controls). The device is classified as class II if it is a root-form endosseous dental implant. The root-form endosseous dental implant is characterized by four geometrically distinct types: Basket, screw, solid cylinder, and hollow cylinder. The guidance document entitled “Class II Special Controls Guidance Document: Root-Form Endosseous Dental Implants and Endosseous Dental Implant Abutments” will serve as the special control. (See § 872.1(e) for the availability of this guidance document.)(2)
*Classification.* Class II (special controls). The device is classified as class II if it is a blade-form endosseous dental implant. The special controls for this device are:(i) The design characteristics of the device must ensure that the geometry and material composition are consistent with the intended use;
(ii) Mechanical performance (fatigue) testing under simulated physiological conditions to demonstrate maximum load (endurance limit) when the device is subjected to compressive and shear loads;
(iii) Corrosion testing under simulated physiological conditions to demonstrate corrosion potential of each metal or alloy, couple potential for an assembled dissimilar metal implant system, and corrosion rate for an assembled dissimilar metal implant system;
(iv) The device must be demonstrated to be biocompatible;
(v) Sterility testing must demonstrate the sterility of the device;
(vi) Performance testing to evaluate the compatibility of the device in a magnetic resonance (MR) environment;
(vii) Labeling must include a clear description of the technological features, how the device should be used in patients, detailed surgical protocol and restoration procedures, relevant precautions and warnings based on the clinical use of the device, and qualifications and training requirements for device users including technicians and clinicians;
(viii) Patient labeling must contain a description of how the device works, how the device is placed, how the patient needs to care for the implant, possible adverse events and how to report any complications; and
(ix) Documented clinical experience must demonstrate safe and effective use and capture any adverse events observed during clinical use.
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Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - WO66-G609 Silver Spring, MD 20993-0002
Auqust21, 2014
ZL Microdent Attachment GmbH Synnöve Lindeman Head of Quality Management Schutzenstrabe 6-8 Breckerfeld, DE D-58339
Re: K132585
Trade/Device Name: ZL Microdent Natural Lock Implant System Regulation Number: 21 CFR 872.3640 Regulation Name: Endosseus Dental Implant Regulatory Class: II Product Code: DZE, NHA Dated: July 21, 2014 Received: July 24, 2014
Dear Ms. Lindeman:
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.
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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.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please contact the Division of Small Manufacturers, International and Consumer Assistance at its tollfree 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" (21CFR 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 Small Manufacturers, International and Consumer Assistance 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,
## Mary S. Runner -S
Erin I. Keith, M.S. Director Division of Anesthesiology, General Hospital, Respiratory, Infection Control and Dental Devices Office of Device Evaluation Center for Devices and Radiological Health
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### Indication for Use
510(k) Number:
Device Name: ZL Microdent NaturaLLock Implant System
Indications for use:
The NaturaLLock implant system is an endosseous dental implant system made of titanium. NaturaLLock implants are indicated for the support and retention of fixed single tooth and fixed partial denture restorations in the molar, premolar, cuspid, and incisor regions of partially edentulous jaws. NaturaLLock implants may be loaded immediately in the anterior mandibular arch if four are splinted together with a bar. NaturaLLock implants may be immediately restored with a temporary prosthesis that is not in functional occlusion.
The implants are offered in sterile condition, all other components can be sterilized in an autoclave .
Prescription Use X AND/OR (Part 21 CFR 801 Subpart D)
Over-The-Counter Use (21 CFR 801 Subpart C)
(PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE OF NEEDED)
Concurrence of DCRH, Office of Device Evaluation (ODE)
Page 01 of 01
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# Summary
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#### 510(k) Summary as required by section 807.92(c)
K-number: K133706
#### Submission Applicant:
ZL Microdent-Attachment GmbH & Co. KG Schützenstraße 6-8 58339 Breckerfeld Germany
Phone: +49 (0)2338-801-0 Fax: +49 (0)2338-801-40 E-mail: Synnoeve.lindeman@zl-microdent.de
#### Establishment Registration Number:
3008134186
#### Application correspondent/Contact person:
Synnöve Lindeman Schützenstrasse 6-8 D-58339 Breckerfeld, Germany
Phone: +49 (0)2338 80143 Fax: +49 (0)2338 80140 E-mail: synnoeve.lindeman@zl-microdent.de
#### Trade name:
ZL Microdent NaturaLLock Implant System
#### Common name:
One-piece implant system
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#### Classification name:
Endosseous dental implant, Dental (21 CFR 872.3640- DZE)
#### Predicate devices:
K031345 Nobel Direct
Nobel Biocare USA Inc., 22715 Savi Ranch Parkway, Yorba Linda, CA 92887, USA
K062281 Zimmer One Piece, 4,7mm
K052997 Zimmer Once Piece
Zimmer Dental Inc., 1900 Aston Ave., Carlsbad, CA 92008, USA
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## Substantial Equivalence Comparison Table
| Relevant Areas | ZL Microdent -<br>NaturaLLock implant system | Result | Nobel Biocare USA -<br>Nobel Direct implant system | Zimmer Dental Inc. -<br>One piece implant system |
|-------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Intended Use<br>Indications for use | The NaturaLLock implant system is an<br>endosseous dental implant system made of<br>titanium. NaturaLLock implants are indicated<br>for the support and retention of fixed single<br>tooth and fixed partial denture restorations in<br>the molar, premolar, cuspid, and incisor<br>regions of partially edentulous jaws.<br>NaturaLLock implants may be loaded<br>immediately in the anterior mandibular arch if<br>four are splinted together with a bar.<br>NaturaLLock implants may be immediately<br>restored with a temporary prosthesis that is<br>not in functional occlusion. | s.e. | The Nobel Biocare - Nobel Direct implant<br>system is an endosseous dental implant system<br>made of a material such as titanium or titanium<br>alloy, that is intended to be surgically placed in<br>the bone of the upper or lower jaw arches to<br>provide support for prosthetic devices, such as<br>artificial teeth, in order to restore a patient's<br>chewing function. | The Zimmer) Dental One-Piece Implant is a<br>one-piece endosseous dental<br>implant which is a combination of implant and<br>abutment sections. The<br>implant is composed of titanium alloy. The<br>abutment portion is pre-prepared<br>and contoured for esthetic restoration. The<br>abutment portion of the implant<br>features a pre-prepared margin to facilitate the<br>restoration process. The<br>implant section is designed for ease of<br>implantation and with greater surface<br>area for osseointegration. The implant section<br>surface is treated to facilitate<br>osseointegration. In addition, the implant<br>section is tapered with either double<br>or triple-lead threads, depending upon the<br>apical diameter. |
| Material | ZL Microdent NaturaLLock implants are<br>made of Titanium | s.e. | Identical | Identical |
| Target population | Professional use only - qualified dental<br>implantologists, oral surgeons or maxilla<br>surgeons only. Strictly reserved to specialised<br>and trained users. | s.e. | Identical | Identical |
| Where used | Dental practises | s.e. | Identical | Identical |
| Packaging | The NaturaLLock implant packaging<br>comprises a non-sterile storage packaging<br>with instructions for use (paper), a secondary<br>packaging as a germ barrier and implant<br>holding unit (glass) and a sterile primary<br>packaging (glass)<br>The glass container is delivered with a sticker<br>showing all relevant information. Furthermore<br>the storage packaging includes a sandwich tag<br>for transference to the patient file (LOT No.) | s.e. | Similar | Similar |
| Relevant Areas | ZL Microdent –<br>NaturaLLock implant system | Result | Nobel Biocare USA –<br>Nobel Direct implant system | Zimmer Dental Inc. –<br>One piece implant system |
| Performance /<br>Biocompatibility | Testing according ISO 10993 Biological<br>Evaluation of Medical Devices applying all<br>relevant provisions for the devices.<br><br>All relevant testing regarding biocompatibility<br>was carried out by ZL Micodent-Attachment<br>GmbH & Co. KG with a total compliance<br>with the provisions of ISO 10993.<br>The same material is used for the predicate<br>devices manufactured and distributed by<br>Nobel Biocare USA and Leader Italia, which<br>received market clearance and are in<br>commercial distribution. | s.e. | Identical | Identical |
| Sterilization | All implants are sold sterile. Drills,<br>instruments and other invasive components<br>are sold non sterile and need to be sterilized<br>according to the manufacturers validated<br>processing instructions. All components and<br>instruments need to be sterilized prior to use. | s.e. | Identical | Identical |
| Sizes & Diameters | ZL Microdent NaturaLLock implants and its<br>components are available in the following<br>lengths and diameters:<br><br>Diameters & lengths:<br>Ø 3.5 – lengths: 10, 13 & 16mm<br>Ø 4.3 – lengths: 8, 10, 13 & 16mm<br>Ø 5.0 – lengths: 8, 10, 13 & 16mm<br>Ø 6.0 – lengths: 8, 10, 13 & 16mm | s.e. | Nobel Biocare Nobel Direct implants and its<br>components are available in the following<br>lengths and diameters:<br><br>Diameter:<br>Ø 3.0, 3.5, 4.3, 5.0 and 6.0mm<br>Length:<br>8, 10, 13 and 16mm | Zimmer Once Piece Implants and its<br>components are available in the following<br>lengths and diameters:<br><br>Diameter:<br>Ø 3.0, 3.7 & 4.7mm<br>Length:<br>10, 11.5, 13 and 16mm |
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#### Description of the device:
The NaturaLLock single-stage implant for immediate restoration combines the endosteal and prosthetic implant sections in one piece (integrated abutment). The anatomically shaped implant has a self-tapping thread.
The NaturaLLock implant system includes single-stage implants, dental tools, instruments, drills, drill guide sleeves and a surgical tray, which contains a complete set of instruments structured according to the logical sequences of surgery.
The system is colour coded as follows: red Ø 3.5 mm, yellow Ø 4.3 mm, blue Ø 5.0 mm, green Ø 6.0 mm. The instruments are laser marked with the following information: drills: Ø and length, implant driver: Ø
#### Indication range:
For single and multiple tooth replacement in the upper and lower jaw. Adequate bone quality, width and height must be available. It has to be proven carefully, if the systemic state of the patient is adequate for an implantation, and especially if there are any allergic reactions on the implant components as well as any prohibitive diseases (e.g. diabetes, smoker).
#### Indications for Use:
The NaturaLLock implant system is an endosseous dental implant system made of titanium. NaturaLLock implants are indicated for the support and retention of fixed single tooth and fixed partial denture restorations in the molar, cuspid, and incisor regions of partially edentulous jaws. NaturaLLock implants may be loaded immediately in the anterior mandibular arch if four are splinted together with a bar. NaturaLLock implants may be immediately restored with a temporary prosthesis that is not in functional occlusion.
#### Comparison with predicate devices:
The ZL Microdent product is similiar to the predicate devices in terms of technical characteristics, design, indications for use, target population, where it is used, performance, biocompatibility characteristics as well as sizes, surfaces and configurations. Similar as the Nobel and Zimmer predicate devices the ZL Microdent NaturaLLock implants are one-piece constructions, have an integral, pre-contoured abutment, a tapered implant body, a self-cutting thread and an implant head with symmetrical, axially directed grooves.
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Conclusion: The ZL Microdent product can be deemed substantially equivalent for its indicated use.
#### Summary of the non-clinical testing data:
Results of risk analysis, case studies, cleanliness testing, biocompatibility, sterilization, cytotoxicity and packaging testing have demonstrated that ZL Microdent NaturaLLock implants are equivalent to the predicate device implants tested. When compared with predicate devices, results of bench performance testing indicated all acceptance criteria were met, and demonstrated the subject implants are equivalent. A series of safety and performance testing were performed to demonstrate that the ZL Microdent NaturaLLock implants do not raise any new issues of safety and efficacy.
#### Summary:
The presented data that was conducted on the ZL Microdent products, shows in its results and in comparison to the predicate devices substantially equivalence to the predicate devices for their intended use. The used materials are well researched.
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.