K Number
K223141
Device Name
STR8 Clear Aligner
Manufacturer
Date Cleared
2023-04-24

(202 days)

Product Code
Regulation Number
872.5470
AI/MLSaMDIVD (In Vitro Diagnostic)TherapeuticDiagnosticis PCCP AuthorizedThirdparty
Intended Use
The STR8 Clear Aligner is indicated for the aligment of teeth during orthodontic treatment of malocclusions by way of continuous gentle forces.
Device Description
STR8 Clear Aligners are thermoformed plastic aligners designed to be worn in sequence to facilitate the movement to the teeth to the final desired position. The sequential aligners introduce incremental movements that move teeth by way of gentle continuous force. The aligners are to be worn 20 to 22 hours a day and are to be removed for eating and for cleaning. STR8 Clear Aligners are designed from digital scans of a patient's dentition. Using the scan, specialized orthodontic CAD/CAM software will be used to develop the treatment plans that consist of sequential dental models wherein the teeth are gradually realigned with each step. For this 510(k), ArchForm Treatment Planning System (K213916) will be used for this application. ArchForm is approved for use in the management of orthodontic models, systematic inspection, detailed analysis, treatment simulation and virtual appliance design options. The specialized orthodontic treatment planning software has a 510k clearance for the intended use under FDA Classification Product Code PNN, regulation 872.5470. Once the treatment plan is reviewed and approved by a STR8 Oral Care dental health professional, each 3D model from the treatment plan is manufactured. The aligner trays are then manufactured by thermoforming a dental thermoplastic sheet over each model. The aligners are then provided to the patient by the prescribing dental professional group.
More Information

Unknown
The description mentions "specialized orthodontic CAD/CAM software" and "treatment simulation," which are common applications where AI/ML could be used, but the summary does not explicitly state that AI/ML is incorporated into the software or the process. The reference to the ArchForm Treatment Planning System (K213916) also doesn't confirm AI/ML use in this summary.

Yes
The device is a STR8 Clear Aligner, indicated for the alignment of teeth during orthodontic treatment of malocclusions, which is considered a therapeutic function.

No.

The device is an aligner used for orthodontic treatment, not for diagnosing a condition. It facilitates the movement of teeth based on a pre-determined treatment plan developed using specialized software.

No

The device description clearly states that the device is "thermoformed plastic aligners" which are physical objects, not software. While software is used in the design process, the final medical device is a physical product.

Based on the provided information, the STR8 Clear Aligner is not an IVD (In Vitro Diagnostic).

Here's why:

  • IVDs are used to examine specimens derived from the human body. The STR8 Clear Aligner is a physical device worn in the mouth to move teeth. It does not analyze or test any biological samples.
  • The intended use is for the physical alignment of teeth. This is a mechanical process, not a diagnostic one.
  • The device description focuses on the manufacturing and use of the physical aligners. While it uses digital scans and software for planning, the device itself is the aligner, which is a therapeutic device.
  • The performance testing described is related to the physical properties and manufacturing accuracy of the aligners, not the analysis of biological samples or diagnostic accuracy.

The software used for treatment planning (ArchForm Treatment Planning System) is a separate device with its own 510(k) clearance (K213916) and is classified under a regulation related to orthodontic models and planning, not IVDs.

Therefore, the STR8 Clear Aligner is a medical device (specifically, a dental device for orthodontic treatment), but it does not fit the definition of an In Vitro Diagnostic device.

N/A

Intended Use / Indications for Use

The STR8 Clear Aligner is indicated for the alignment of teeth during orthodontic treatment of malocclusions by way of continuous gentle forces.

Product codes

NXC

Device Description

STR8 Clear Aligners are thermoformed plastic aligners designed to be worn in sequence to facilitate the movement to the teeth to the final desired position. The sequential aligners introduce incremental movements that move teeth by way of gentle continuous force. The aligners are to be worn 20 to 22 hours a day and are to be removed for eating and for cleaning.

STR8 Clear Aligners are designed from digital scans of a patient's dentition. Using the scan, specialized orthodontic CAD/CAM software will be used to develop the treatment plans that consist of sequential dental models wherein the teeth are gradually realigned with each step. For this 510(k), ArchForm Treatment Planning System (K213916) will be used for this application. ArchForm is approved for use in the management of orthodontic models, systematic inspection, detailed analysis, treatment simulation and virtual appliance design options. The specialized orthodontic treatment planning software has a 510k clearance for the intended use under FDA Classification Product Code PNN, regulation 872.5470.

Once the treatment plan is reviewed and approved by a STR8 Oral Care dental health professional, each 3D model from the treatment plan is manufactured. The aligner trays are then manufactured by thermoforming a dental thermoplastic sheet over each model. The aligners are then provided to the patient by the prescribing dental professional group.

Mentions image processing

Not Found

Mentions AI, DNN, or ML

Not Found

Input Imaging Modality

digital scans of a patient's dentition

Anatomical Site

teeth

Indicated Patient Age Range

Not Found

Intended User / Care Setting

prescribing dental professional group

Description of the training set, sample size, data source, and annotation protocol

Not Found

Description of the test set, sample size, data source, and annotation protocol

Not Found

Summary of Performance Studies

Non-Clinical Performance Testing: The use of thermoplastic materials for sequential aligners intended to treat malocclusions has been well documented in scientific literature regarding incremental tooth moving forces. However, durability testing was completed on these aligners. Real world use was simulated to ensure that the aligner material and manufacturing process produced aligners that were suitable for their prescribed period of use.

An internal manufacturing validation was performed to establish the dimensional accuracy of the manufacturing process for the STR8 Clear Aligners. The submitted intraoral scans, digital dentition models, from treatment planning, 3D printed molds and the final thermoformed aligners were all assessed quantitatively in the validation. Thus, the robustness of the process was demonstrated from 3D printing through thermoforming.

All measurements were within 0.3 mm of the target input value, the predefined tolerance of the manufacturing process. Furthermore, throughout the qualitative assessment of the aligners no performance, cosmetic, or other detectable issues were identified. This validation has met the pre-established acceptance criteria to demonstrate that the STR8 manufacturing process yields dimensional accurate products that meet product specifications.

The dental thermoplastic material used for STR8 Clear Aligners is a well-establish and commonly used thermoplastic, Zendura FLX. Biocompatibility testing for the aligner material, the only patient contacting material, was conducted by the manufacturer in accordance with International Standard ISO 10993-1, "Biological evaluation of medical devices - Part 1: Evaluation and testing within a risk management process".

Additional cytotoxicity testing according to ISO 10993-5:2009 was performed on final manufactured STR8 Clear Aligners.

Clinical Performance Testing: The technical characteristics, indications for use, material, manufacturing, and sterilization processes are the same to the predicate device and therefore, no clinical studies were deemed necessary to demonstrate the safety and effectiveness of the subject device.

Key Metrics

All measurements were within 0.3 mm of the target input value, the predefined tolerance of the manufacturing process.

Predicate Device(s)

uLab Systems Dental Aligner (K211510)

Reference Device(s)

ArchForm Treatment Planning System (K213916)

Predetermined Change Control Plan (PCCP) - All Relevant Information

Not Found

§ 872.5470 Orthodontic plastic bracket.

(a)
Identification. An orthodontic plastic bracket is a plastic device intended to be bonded to a tooth to apply pressure to a tooth from a flexible orthodontic wire to alter its position.(b)
Classification. Class II.

0

Image /page/0/Picture/0 description: The image contains the logo of the U.S. Food and Drug Administration (FDA). On the left is the Department of Health & Human Services logo. To the right of that is the FDA logo, which is a blue square with the letters "FDA" in white. To the right of the blue square is the text "U.S. FOOD & DRUG ADMINISTRATION" in blue.

April 24, 2023

STR8 Oral Care % Elisabeth Miller Regulatory Affairs Consultant Prime Path Medtech 1321 Upland Dr. Suite 6792 Houston, Texas 77043

Re: K223141

Trade/Device Name: STR8 Clear Aligner Regulation Number: 21 CFR 872.5470 Regulation Name: Orthodontic Plastic Bracket Regulatory Class: Class II Product Code: NXC Dated: February 21, 2023 Received: February 21, 2023

Dear Elisabeth Miller:

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.

1

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 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.

Michael E. Adjodha -S

Michael E. Adjodha, M.ChE. Assistant Director DHT1B: Division of Dental and ENT Devices OHT1: Office of Ophthalmic. Anesthesia. Respiratory, ENT and Dental Devices Office of Product Evaluation and Ouality Center for Devices and Radiological Health

Enclosure

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Indications for Use

510(k) Number (if known)

K223141

Device Name STR8 Clear Aligners

Indications for Use (Describe)

The STR8 Clear Aligner is indicated for the aligment of teeth during orthodontic treatment of malocclusions by way of continuous gentle forces.

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)

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Section 5. 510(k) Summary

A summary of 510(k) safety and effectiveness information in accordance with the requirements of 21 CFR 807.92.

Submitter:STR8 Oral Care
Company Contact Person:
Address:
Phone:
Email:Misee Harris
217 E Cherry Ave Jonesboro, AR 72401
931-797-1821
miseeharris@cdcjonesboro.com
Submission Correspondent:
Address:
Phone:
Email:Elisabeth Miller, Regulatory Affairs Consultant
1321 Upland Dr. Suite 6792 Houston, TX 77043
(586) 242-7718
emiller@primepathmedtech.com
Date Prepared:September 2022
Proprietary Name:STR8 Clear Aligners
Common Name:Sequential Clear Aligner
Product Code:NXC – Orthodontic plastic bracket
Device Classification:Class II, 21 CFR 872.5470
Predicate Device:uLab Systems Dental Aligner (K211510)
Classification Name:Aligner, Sequential

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Device Description:

STR8 Clear Aligners are thermoformed plastic aligners designed to be worn in sequence to facilitate the movement to the teeth to the final desired position. The sequential aligners introduce incremental movements that move teeth by way of gentle continuous force. The aligners are to be worn 20 to 22 hours a day and are to be removed for eating and for cleaning.

STR8 Clear Aligners are designed from digital scans of a patient's dentition. Using the scan, specialized orthodontic CAD/CAM software will be used to develop the treatment plans that consist of sequential dental models wherein the teeth are gradually realigned with each step. For this 510(k), ArchForm Treatment Planning System (K213916) will be used for this application. ArchForm is approved for use in the management of orthodontic models, systematic inspection, detailed analysis, treatment simulation and virtual appliance design options. The specialized orthodontic treatment planning software has a 510k clearance for the intended use under FDA Classification Product Code PNN, regulation 872.5470.

Once the treatment plan is reviewed and approved by a STR8 Oral Care dental health professional, each 3D model from the treatment plan is manufactured. The aligner trays are then manufactured by thermoforming a dental thermoplastic sheet over each model. The aligners are then provided to the patient by the prescribing dental professional group.

Indications for Use:

The STR8 Clear Aligner is indicated for the alignment of teeth during orthodontic treatment of malocclusions by way of continuous gentle forces.

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Comparison to Predicate Devices:

STR8 Clear Aligners are functionally equivalent to the following predicate device: uLab Systems Dental Aligner Kit (K211510).

SpecificationSubject Device:Predicate Device:Comparison Result
STR8 Clear AlignersuLab Systems Dental Aligner Kit (K211510)
Regulation Number21 CRF 872.547021 CRF 872.5470Same
Classification NameAligner, SequentialAligner, SequentialSame
Product CodeNXCNXCSame
ClassificationClass IIClass IISame
OTC or RxRxRxSame
MaterialZendura FLX (copolyester and polyurethane composite)Zendura A (thin thermoformed polyurethane) or Zendura FLX (copolyester and polyurethane composite)Similar (Zendura A) or Same (Zendura FLX)
BiocompatibleYesYesSame
SterileNoNoSame
Device DescriptionA series of customized removable clear plastic orthodontic aligners that sequentially position teeth by way of continuous gentle force.A series of customized removable clear plastic orthodontic aligners that sequentially position teeth by way of continuous gentle force.Same
Patient Removable?YesYesSame
Indication for UseThe STR8 Clear Aligner is indicated for the alignment of teeth duringThe uLab Systems Dental Aligner is indicated for the alignment of teeth duringSame
orthodontic treatment of
malocclusions by way of
continuous gentle forces.orthodontic treatment of
malocclusions by way of
continuous gentle forces.
Intended UseOrthodontic Tooth
MovementOrthodontic Tooth
MovementSame
Principles of
OperationEach preformed plastic
tray is worn in sequence
by the patient as
prescribed by the dental
practitioner. Orthodontic
movement occurs through
continuous gentle forces
applied to the dentition as
each tooth follows the
programmed
displacement based on
the doctor's prescription.Each preformed plastic
tray is worn in sequence
by the patient as
prescribed by the dental
practitioner. Orthodontic
movement occurs through
continuous gentle forces
applied to the dentition as
each tooth follows the
programmed
displacement based on
the doctor's prescription.Same
Aligner Design
ProcessStandard dental software
for tooth alignment uses
digital scan (untreated
state) to generate the
image of a final,
provisional treated state
and then interprets a
series of images that
represent intermediate
teeth states. The dental
practitioner then reviews
these images and has the
option to reject or request
modifications to the set-
up prior to approving for
aligner fabrication. Once
the dental practitioner
approves the treatment
plan, the software
converts the files to
produce a series 3D
models used to produce
thermoformed aligners.Standard dental software,
including the uLab
Systems uDesign.
K171295, for tooth
alignment uses digital
scan (untreated state) to
generate the image of a
final, provisional treated
state and then interprets
a series of images that
represent intermediate
teeth states. The dental
practitioner then reviews
these images and has the
option to reject, make or
request modifications to
the set-up prior to
approving it for aligner
fabrication. Once the
dental practitioner
approves the treatment
plan, the software
converts the files to
produce the series of 3D
models used to produce
thermoformed aligners.Same

Table 1. Predicate Device Comparison

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Comparison for Indications for the Use to Predicate Device:

Based on the above comparison, the indications for use of the STR8 Clear Aligners in this submission is the same as the uLab Systems Dental Aligner Kit (K211510) as they are both indicated for the alignment of teeth during orthodontic treatment of malocclusions by way of continuous gentle forces. Thus, the STR8 Clear Aligners can be considered substantially equivalent to its predicate device.

Comparison of Technical Characteristics to Predicate Device

Based on the above comparison, the design, construction, and performance characteristics of the STR8 Clear Aligners is similar to that of the uLAB Systems Dental Aligner Kit (K211510).

The only difference between the subject device (STR8 Clear Aligner) and predicate device (uLab Systems Dental Aligner Kit) is the material differences come from the additional material (Zendura A) used for the predicate device. The expansion of material does not increase the risk associated with manufacturing, and the subject device and predicate device do share an exact material, Zendura FLX.

Thus, the STR8 Clear Aligners can be considered substantially equivalent to its predicate device.

Non-Clinical Performance Testing

The use of thermoplastic materials for sequential aligners intended to treat malocclusions has been well documented in scientific literature regarding incremental tooth moving forces. However, durability testing was completed on these aligners. Real world use was simulated to ensure that the aligner material and manufacturing process produced aligners that were suitable for their prescribed period of use.

An internal manufacturing validation was performed to establish the dimensional accuracy of the manufacturing process for the STR8 Clear Aligners. The submitted intraoral scans, digital dentition models, from treatment planning, 3D printed molds and the final thermoformed aligners were all assessed quantitatively in the validation. Thus, the robustness of the process was demonstrated from 3D printing through thermoforming.

All measurements were within 0.3 mm of the target input value, the predefined tolerance of the manufacturing process. Furthermore, throughout the qualitative assessment of the aligners no performance, cosmetic, or other detectable issues were identified. This validation has met the pre-established acceptance criteria to demonstrate that the STR8 manufacturing process yields dimensional accurate products that meet product specifications.

The dental thermoplastic material used for STR8 Clear Aligners is a well-establish and commonly used thermoplastic, Zendura FLX. Biocompatibility testing for the aligner

8

material, the only patient contacting material, was conducted by the manufacturer in accordance with International Standard ISO 10993-1, "Biological evaluation of medical devices - Part 1: Evaluation and testing within a risk management process".

Additional cytotoxicity testing according to ISO 10993-5:2009 was performed on final manufactured STR8 Clear Aligners.

Clinical Performance Testing

The technical characteristics, indications for use, material, manufacturing, and sterilization processes are the same to the predicate device and therefore, no clinical studies were deemed necessary to demonstrate the safety and effectiveness of the subject device.

Conclusion

Based on the similarities in indications for use, technological characteristics, and materials the STR8 Clear Aligners are substantially equivalent to the uLab Systems Dental Aligner Kit (K211510)