Published clinical literature (retrospective case series and clinical outcome studies)
The sponsor utilized published clinical literature to demonstrate the clinical performance and safety of the TruMatch CMF Titanium 3D Printed Implant System and similar bone plate devices in adolescent and adult populations, supporting the device's indications for use.
Literature review; Clinical performance; Retrospective analysis; Orthognathic surgery
Clinical Evidence
Study Design
Population
Comparator
Key Endpoints
Schendel et al. 1978; Retrospective analysis
Children 8-16 years
Standard bone plate fixation
Skeletal stability, dentofacial growth
Precious et al. 1985 (1 & 2); Retrospective analysis of 88 consecutive cases
Children and adolescents 6-15 years; Sample Size: 88
Standard bone plate fixation
Morbidity and complications
Li et al. 2017; Clinical study
Patients 18-27 years
Not applicable for this study
Positional and orientational accuracy of surgical plan transfer
Heufelder et al. 2017; Clinical study
Patients 17-59 years
Not applicable for this study
Predictability of maxillary positioning
Indications for Use
The TruMatch CMF Titanium 3D Printed Implant System is intended for bone repositioning, fixation and reconstruction of the maxillofacial skeleton, midface, mandible and chin in adolescents (greater than 12 to 21 years of age) and adults. Specific indications for use: Orthognathic surgery. Reconstructive mandible and maxillofacial surgery. Mandible and maxillofacial trauma surgery.
Device Story
System provides patient-specific titanium plates and osteotomy/drill guides for maxillofacial surgery; manufactured via additive manufacturing based on patient CT scan data. Used in OR by surgeons to transfer pre-operative surgical plans to patient anatomy. Plates facilitate bone fixation/reconstruction; guides ensure accurate osteotomy/drilling. Benefits include improved surgical predictability and accuracy compared to standard off-the-shelf plates requiring intra-operative bending. System is compatible with standard screw fixation.
Clinical Evidence
Evidence includes analysis of 5 clinical studies (including one on the subject device) involving patients aged 8-59. Studies demonstrate successful surgical outcomes, high predictability of maxillary positioning using CAD/CAM guides/plates, and effective transfer of surgical plans without splints. Bench testing confirmed mechanical performance (static/fatigue) and biocompatibility (ISO 10993 series).
Technological Characteristics
Material: Commercially pure titanium. Manufacturing: Additive manufacturing (3D printing). Fixation: Compatible with Synthes screw systems. Plate thickness: 0.8-3.0 mm. Sterilization: Moist heat (steam). Design: Patient-specific based on CT scan data.
Indications for Use
Indicated for adolescents (12-21 years) and adults requiring bone repositioning, fixation, or reconstruction of the maxillofacial skeleton, midface, mandible, and chin due to orthognathic conditions, trauma, or reconstructive needs.
Regulatory Classification
Identification
A bone plate is a metal device intended to stabilize fractured bone structures in the oral cavity. The bone segments are attached to the plate with screws to prevent movement of the segments.
Predicate Devices
Synthes MatrixORTHOGNATHIC Plating System (K083388)
Synthes MatrixMANDIBLE Plate and Screw System (K063790)
Synthes Craniofacial Plate and Screw System (K080331)
Submission Summary (Full Text)
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Public Health Service
Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - WO66-G609 Silver Spring, MD 20993-0002
August 8, 2017
Materialise N.V. Lina Ramirez Regulatory Officer Technologielaan 15 Leuven, 3001 Belgium
Re: K170272
Trade/Device Name: TruMatch CMF Titanium 3D Printed Implant System Regulation Number: 21 CFR 872.4760 Regulation Name: Bone Plate Regulatory Class: Class II Product Code: JEY Dated: July 14, 2017 Received: July 17, 2017
Dear Lina Ramirez:
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 of medical device-
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{1}------------------------------------------------
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 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. 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,
# Mary S. Runner -S
for Michael Ryan Acting Director Division of Anesthesiology. General Hospital, Respiratory, Infection Control, and Dental Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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#### DEPARTMENT OF HEALTH AND HUMAN SERVICES Food and Drug Administration
#### Indications for Use
Form Approved: OMB No. 0910-0120 Expiration Date: January 31, 2017 See PRA Statement below.
#### 510(k) Number (if known)
K170272
#### Device Name
TruMatch CMF Titanium 3D Printed Implant System
#### Indications for Use (Describe)
The TruMatch CMF Titanium 3D Printed Implant System is intended for bone repositioning, fixation and reconstruction of the maxillofacial skelon, midface, mandible and chin in adolescents (greater than 12 to 21 years of age) and adults.
Specific indications for use:
- 0 Orthognathic surgery.
- 0 Reconstructive mandible and maxillofacial surgery.
- O Mandible and maxillofacial trauma surgery.
Type of Use (Select one or both, as applicable)
> Prescription Use (Part 21 CFR 801 Subpart D)
Over-The-Counter Use (21 CFR 801 Subpart C)
#### CONTINUE ON A SEPARATE PAGE IF NEEDED.
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{3}------------------------------------------------
#### 510(K) SUMMARY
#### K170272
The following section is included as required by the Safe Medical Devices Act (SMDA) of 1990 and 21CFR 807.92
### Submitter information
| Company name | Materialise N.V. |
|-----------------------------------|-----------------------------------|
| Establishment registration number | 3003998208 |
| Street Address | Technologielaan 15 |
| City | Leuven |
| Zip code | 3001 |
| Country | Belgium |
| Phone number | +32 16 74 49 56 |
| Fax number | +32 16 39 66 00 |
| Principal contact person | Lina Ramirez |
| Contact title | Regulatory Officer |
| Contact e-mail address | regulatory.affairs@materialise.be |
| Additional contact person | Mieke Janssen |
| Contact title | Senior Regulatory Officer |
| Contact e-mail address | mieke.janssen@materialise.be |
# Date of preparation
This summary was last updated on August 4, 2017.
{4}------------------------------------------------
# Submission information
| | TruMatch CMF Titanium 3D Printed Implant System |
|------------------------------------------|---------------------------------------------------------------------------------------|
| Trade name(s) | TruMatch CMF Ti 3D-Printed Plates and TruMatch CMF Ti 3D-<br>Printed Surgical Guides. |
| Trade name(s) | TruMatch CMF Ti 3D-Printed Implants. |
| Common or Usual name | Bone plate |
| Classification name | Bone plate |
| Product code (classification regulation) | JEY |
| Classification Panel | Dental |
| Device class | Class II (21 CFR 872.4760) |
# Predicate devices
The primary predicate device to which substantial equivalence is claimed to:
| Primary predicate: Synthes MatrixORTHOGNATHIC Plating System | |
|--------------------------------------------------------------|-------------------------------------------|
| Bone plate and screw | |
| Trade or proprietary or model name | Synthes MatrixORTHOGNATHIC Plating System |
| 510(k) number | K083388 |
| Decision date | 03/12/2009 |
| Product code | JEY (21 CFR 872.4760) |
| Manufacturer | Synthes (USA) |
Additional predicate devices to which substantial equivalence is claimed to:
{5}------------------------------------------------
| Synthes MatrixMANDIBLE Plate and Screw System | |
|-----------------------------------------------|-----------------------------------------------|
| Bone plate and screw | |
| Trade or proprietary or model name | Synthes MatrixMANDIBLE Plate and Screw System |
| 510(k) number | K063790 |
| Decision date | 04/16/2007 |
| Product code | JEY (21 CFR 872.4760) |
| Manufacturer | Synthes (USA) |
| Synthes Craniofacial Plate and Screw System | |
|---------------------------------------------|---------------------------------------------|
| Bone plate and screw | |
| Trade or proprietary or model name | Synthes Craniofacial Plate and Screw System |
| 510(k) number | K080331 |
| Decision date | 04/30/2008 |
| Product code | JEY (21 CFR 872.4760) |
| Manufacturer | Synthes (USA) |
### Device Information
### Indications for use
The TruMatch CMF Titanium 3D Printed Implant System is intended for bone repositioning, fixation and reconstruction of the maxillofacial skeleton, midface, mandible and chin in adolescents (greater than 12 to 21 years of age) and adults.
Specific indications for use:
- o Orthognathic surgery.
- Reconstructive mandible and maxillofacial surgery. o
- Mandible and maxillofacial trauma surgery. o
{6}------------------------------------------------
### Device Description
The TruMatch CMF Titanium 3D Printed Implant System is intended for bone repositioning, fixation and reconstruction of the maxillofacial skeleton, midface, mandible and chin.
The TruMatch CMF Titanium 3D Printed Implant System provides a solution with patient-specific plates and patient-specific osteotomy and drill accessories, for the accurate transfer of the surgical plan to the operating room.
The TruMatch CMF Titanium 3D Printed Implant System contains the following applications:
| | | | Orthognathic applications | | | |
|---------------------------------|--------------------------------------------------------------------------------------------------|--------------------|-----------------------------------------------------------------------------------|----------------------------------------|----------------------------------------|--|
| Brand name | | | TruMatch CMF Ti 3D-Printed Plates and TruMatch CMF Ti 3D-Printed Surgical Guides. | | | |
| Material | | | Commercially pure titanium | | | |
| Type of design | | | Patient Specific | | | |
| Range of length | | | 20 mm maximum advancement | | | |
| Type of application | Range of shapes | Plate thickness | Range ofcurvature/angulation | | Patient Specific associated instrument | |
| Maxillary fixation | Interconnected<br>Straight, L-plate, Y-plate,<br>double Y-plate,<br>combinations<br>of the above | 0.8-1.5 mm | 0-119° | | Maxillary guide | |
| Mandibular fixation BSSO | Single strut,<br>double strut | 1-1.5 mm | 0-90° | | BSSO guide | |
| Mandibular fixation genioplasty | Interconnected<br>Straight,<br>curved,<br>combinations<br>of the above | 0.8-1.5 mm | 0-119° | | Genioplasty guide | |
| | | | Reconstruction applications: orbit | | | |
| Brand name | | | TruMatch CMF Ti 3D-Printed Implants. | | | |
| Material | Commercially pure titanium | | | | | |
| Type of design | Patient Specific | | | | | |
| Plate width | 5.5-45 mm | | | | | |
| Type of application | Plate thickness | Range of curvature | | Patient Specific associated instrument | | |
| Orbital fracture treatment | 0.8-1.2 mm | 12°/mm length | | Orbital guide | | |
{7}------------------------------------------------
| Reconstruction applications: Mandible, midface | | | | |
|------------------------------------------------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------|----------------------------------|-------------------------------------------|
| Brand name | | TruMatch CMF Ti 3D-Printed Plates and TruMatch CMF Ti 3D-Printed Surgical<br>Guides. | | |
| Material | | Commercially pure titanium | | |
| Type of design | | Patient Specific | | |
| Range of length | | 20 mm maximum bridging of osteotomy gap<br>Small: 20-120mm, Large: 20-294mm | | |
| Type of<br>application | Range of<br>shapes | Plate<br>thickness | Range of<br>curvature/angulation | Patient Specific associated<br>instrument |
| Mandibular<br>reconstruction<br>(small):<br>Mandibular<br>bone fixation | Straight,<br>curved,<br>crescent,<br>lambda,<br>trapezoidal,<br>strut,<br>subcondylar,<br>combinations<br>of the above | 1.5-2 mm | 12°/mm length | Mandibular guide |
| Mandibular<br>reconstruction<br>(large):<br>Mandibular<br>bone fixation<br>and<br>mandibular<br>reconstruction<br>with<br>bone<br>grafts | Single angle,<br>double angle,<br>curved,<br>double<br>barrel,<br>combinations<br>of the above | 2-3 mm | 12°/mm length | Mandibular guide |
| Midface<br>reconstruction | Straight, Y, X,<br>H, L, Double<br>Y, Box, Strut,<br>Oblique L, T | 0.8-1.5 mm | 12°/mm length | Midface guide |
{8}------------------------------------------------
# Comparison to Predicate Devices
| Subject device:<br>TruMatch CMF 3D Printed<br>Implant System | Primary predicate device:<br>Synthes MatrixORTHOGNATHIC<br>Plating System<br>(K083388) | Predicate device:<br>Synthes MatrixMANDIBLE<br>Plate and Screw System<br>(K063790) | Predicate device:<br>Synthes Craniofacial Plate and<br>Screw System<br>(K080331) | |
|--------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Product<br>code | JEY | JEY | JEY | JEY |
| Classification | Class II | Class II | Class II | Class II |
| Intended<br>Use | The TruMatch CMF 3D Printed<br>Implant System is intended for<br>bone repositioning, fixation<br>and reconstruction of the<br>maxillofacial skeleton, midface,<br>mandible and chin in<br>adolescents (greater than 12 to<br>21 years of age) and adults.<br>Specific indications for use:<br>Orthognathic surgery. Reconstructive<br>mandible and<br>maxillofacial surgery. Mandible and<br>maxillofacial trauma<br>surgery. | Synthes MatrixORTHOGNATHIC<br>Plating System is intended for use<br>in selective trauma of the midface<br>and craniofacial skeleton;<br>craniofacial surgery; reconstructive<br>procedures; and selective<br>orthognathic surgery of the<br>maxilla, mandible, and chin in<br>adolescents (greater than 12 to 21<br>years of age) and adults.<br>Specific Indications for Use:<br>Fractures of the midface<br>and craniofacial skeleton. LeFort I osteotomies,<br>sagittal split osteotomies,<br>and genioplasties. Orthognathic surgery<br>including reconstructive<br>procedures. | The MatrixMANDIBLE plate<br>and screw system is intended<br>for oral, maxillofacial surgery:<br>Trauma. Reconstructive<br>surgery. Orthognathic<br>surgery (surgical<br>correction of<br>dentofacial<br>deformities) | The Synthes Craniofacial Plate and<br>Screw System is intended for use in<br>selective trauma of the midface<br>and craniofacial skeleton,<br>craniofacial surgery, reconstructive<br>procedures and selective<br>orthognathic surgery of the maxilla<br>and chin |
{9}------------------------------------------------
Both subject device and primary predicate have indications for use: orthognathic surgery, including Le Fort I osteotomies, saggital split osteotomies and genioplasty, reconstructive surgery and trauma of the mandible and maxillofacial skeleton.
The subject device is additionally indicated for midface reconstruction and for midface reconstruction including orbital reconstruction. These additional indications for use are covered by the secondary predicates.
| Characteristics | TruMatch CMF Titanium<br>3D Printed Implant<br>System | Synthes MatrixORTHOGNATHIC<br>Plating System<br>(K083388) | Synthes MatrixMANDIBLE<br>Plate and Screw System<br>(K063790) | Synthes Craniofacial Plate and<br>Screw System<br>(K080331) |
|------------------------------------|----------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------|
| Product code | JEY | JEY | JEY | JEY |
| Classification | Class II | Class II | Class II | Class II |
| Technical<br>specification | Bone plate | Bone plate | Bone plate | Bone plate |
| Fixation method | Synthes screw system | Synthes screw system | Synthes screw system | Synthes screw system |
| Material(s) | Commercially pure<br>titanium | Commercially pure titanium | Commercially pure titanium | Commercially pure titanium |
| Manufacturing<br>method | Additive manufacturing | Machined | Machined | Machined |
| Provided sterile? | No | No | No | No |
| Sterilization method | Moist heat | Moist heat | Moist heat | Moist heat |
| Plate thickness | 0.8 mm – 3.0 mm | 0.5 mm – 1.0 mm | 1.0 mm – 2.8 mm | 0.2 mm – 0.5 mm |
| Patient-specific<br>configuration? | Yes. Devices are<br>manufactured patient-<br>specific, based on a CT<br>scan of the patient. | No. Devices are provided in a<br>standard shape and matched to<br>the patient's anatomy intra-<br>operatively. | No. Devices are provided in a<br>standard shape and matched<br>to the patient's anatomy<br>intra-operatively. | No. Devices are provided in a<br>standard shape and matched to<br>the patient's anatomy intra-<br>operatively. |
{10}------------------------------------------------
Both the subject device and all predicates are manufactured in commercially pure titanium and have the same fixation method.
Both the subject device and the predicate devices are not provided sterile and have the same sterilization method, moist heat.
The manufacturing technique differs between the subject device and the reference devices. While the subject device is manufactured by additive manufacturing, the predicate devices are machined.
The subject device is made patient specific, manufactured from patient CT scan data, while the predicate devices are provided in a standard shape and adapted to the patient intra-operatively.
### Performance data
The following non-clinical testing was conducted as a basis for the determination of substantial equivalence:
- . Performance testing of the TruMatch CMF Titanium 3D Printed implants and accessories, including
- o Mechanical performance of the subject device compared to the predicate devices
- o Compatibility testing
- Biocompatibility testing
- Sterilization testing
An overview of the testing performed can be found below.
| Performance testing overview | | |
|------------------------------|-------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Test | Test method summary | Results |
| Mechanical testing | ASTM F382: static and fatigue<br>four point plate bending | The results of this test indicate that<br>the subject device has a higher<br>static bending strength and has<br>fatigue bending<br>properties compared to the<br>predicate devices. |
| Compatibility testing | Combination of user need<br>validation lab and engineering<br>rationale | The subject device is compatible<br>with the Synthes fixation system. |
| Sterilization test overview | |
|---------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Test / assessment description | Test report conclusion |
| Steam sterilization validation according to<br>ISO 17665-1:2006, ISO 11737-2:2009 and ISO<br>14161:2009 | - The results of the steam sterilization validation<br>show that the implants, accessories and models<br>can be sterilized to a SAL of 10-6 using the<br>recommended steam sterilization instructions |
{11}------------------------------------------------
| Biocompatibility test overview | |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------|
| Test / assessment description | Test report conclusion |
| • Cytotoxicity:<br>ISO 10993-5: Tests for in-vitro cytotoxicity -<br>L929 Neutral red uptake Cytotoxicity | - no cytotoxic effect |
| • Sensitization:<br>ISO 10993-10: Tests for irritation and delayed-<br>type hypersensitivity - Kligman Maximization test | - in compliance with requirements of the ISO<br>10993-10 guidelines |
| • Intra-cutaneous reactivity:<br>ISO 10993-10: Tests for irritation and delayed-<br>type hypersensitivity – Intra-cutaneous<br>Injection Test | - in compliance with requirements of the ISO<br>10993-10 guidelines |
| • Systemic toxicity:<br>ISO 10993-11: Tests for systemic toxicity -<br>Systemic injection test | - test passed and is considered negative based<br>on standards set by ISO 10993-11 |
| • Chemical characterization:<br>ISO10993-18: Biological Evaluation of Medical<br>Devices - Part 18: Chemical Characterization of<br>Materials (2005). | - chemical characterization as per report |
| • Assessment of allowable limits for leachable<br>substances:<br>ISO 10993-17 (2009) "Biological evaluation of<br>medical devices — Part 17: Establishment of<br>allowable limits for leachable substances" | - no toxicological concern remains<br>further biological testing are considered not<br>justified |
# Clinical performance of the device in the patient population of adolescents (greater than 21 to 21 years of age) and adults
To demonstrate clinical performance of the TruMatch CMF Titanium 3D Printed Implant System in the patient population of adolescents (greater than 21 to 21 years of age) and adults, 5 clinical studies including patients from 8-21 years and adults, were analyzed:
{12}------------------------------------------------
| | Schendel et al.<br>19781 | Precious et al. 1985<br>(1)2 | Precious et al.<br>1985(2)3 | Li et al. 20174 | Heufelder et al.<br>20175<br>Subject device |
|----------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Patient range of age | 8-16 years | 6-15 years | 11-14 years | 18-27 years | 17-59 years |
| Treatment | Standard bone plate<br>fixation | Standard bone plate<br>fixation | Standard bone plate<br>fixation | Patient-specific<br>bone plate fixation | Patient-specific<br>bone plate fixation |
| Results and analysis | The surgical-orthodontic<br>correction of mandibular<br>deficiency in growing children (8<br>to 16 years of age) can be employed to<br>achieve excellent results. Mandibular<br>advancement by a modified sagittal<br>osteotomy proves to be an acceptable<br>procedure with good skeletal<br>stability.<br>Dentofacial growth following surgery<br>will be harmonious and not adversely<br>affected. Direction of growth varies,<br>with the mandibular plane angle<br>becoming more vertical with an<br>increasing mandibular plane angle. | Surgery for the correction of<br>dentofacial deformities can be<br>performed on children and<br>adolescent patients with little morbidity<br>and few complications. | The correction of dentofacial<br>deformities in children using<br>orthodontic and surgical<br>means can be carried out reliably<br>if careful attention is paid to the<br>systematic evaluation of each<br>deformity. Selected cases from more<br>than 100 children whom we have<br>treated are presented to<br>illustrate salient clinical features of<br>specific deformities. | The maximum positional and<br>orientational differences between<br>the planned and post-operative<br>positions were within 1.1 mm and<br>3°. The system is capable of<br>accurately and effectively<br>transferring the surgical plan<br>without the use of a surgical splint. No<br>complications were reported in the<br>article. | In this study all the operations were<br>performed successfully, without any<br>unexpected incidence.<br>The results demonstrate the<br>high predictability of maxillary positioning<br>by CAD/CAM fabricated<br>customized surgical guides and patient<br>specific osteosynthesis plates. |
Based on published literature findings of the subject device and similar bone plate devices and a risk analysis, it can be concluded that the subject device can be used for treatment of the adolescent patient population (greater than 12 to 21 years of age), if additional precautions are taken into account:
<sup>4</sup> Schendel S., Wolford M., Epker N. "Surgical advancement of the deficient mandible in growing children: Treatments", Journal of Oral Surgery, Volume 45, No 3., pp 364-377.
<sup>4</sup> Precious D.S., McFadden L.R., Fitch S.J. "Orthognathic surgery for children, analysis of 88 consecutive cases" Int J. of Oral Surgery, 1985, Volume 14, pp 466-471
<sup>3</sup> Precious D.S., McFadden L.R., Fitch S.J. "Orthognathic surgery for children, analysis of 88 consecutive cases" Int J. of Oral Surgery, 1985, Volume 14, pp 466-471
<sup>4</sup> B. Li, S. Shen, W. liang, J. Li, T. Jiang, J.J. Wang. " A new approach to splint-less orthognathic surgery using a personalized orthognathic surgical guide system: A preliminary study, Int J. of Oral Surgery 2017
<sup>్</sup> Heufelder M., Wilde F., Pietzka S., Mascha F., Winter K., Schramm A., Rana M. "Clinical accuracy of waferless maxillary positioning using customized surgical guides and patient specific osteosynthesis in bimaxillary orthognathic surgery, 2017 510(k) Summary K170272 - Materialise N.V.
{13}------------------------------------------------
Important considerations in achieving quality outcomes for the treatment of facial deformities in growing patients include accurate diagnosis and patient selection and proper treatment planning.
### Conclusion
Non clinical tests and a review of clinical performance data demonstrate that the TruMatch CMF Titanium 3D Printed Implant System is substantially equivalent to the predicate devices.
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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.