K Number
K200798
Device Name
G-CEM ONE
Manufacturer
Date Cleared
2020-11-24

(243 days)

Product Code
Regulation Number
872.3275
AI/MLSaMDIVD (In Vitro Diagnostic)TherapeuticDiagnosticis PCCP Authorized
Intended Use
1. Cementation of all types of all ceramic, resin and metal-based inlays, onlays, crowns and bridges. 2. Cementation of metal, ceramic, fiber posts, and cast post and cores. 3. Cementation of all ceramic and composite veneers. 4. Final cementation of crowns and bridges on implant abutments.
Device Description
G-CEM ONE is a dual-cured self-adhesive resin cement with a tooth primer, G-CEM ONE ADHESIVE ENHANCING PRIMER. The mixed cement hardens through polymerization. The adhesive component is an acidic monomer which also can polymerize with frame-forming monomers. This copolymerizing reaction provides higher physical strength than resin-modified glass ionomer cements. Using the primer on the prepared tooth, surface modification and cement polymerization are promoted and hardened along with the cement. The cement syringe consists of Paste A and B, which are filled in a one-body/two chamber syringe. Both pastes are automixed with a mixing tip and applied directly to restorations or prepared cavity.
More Information

No
The device description and performance studies focus on the chemical and physical properties of a dental cement, with no mention of AI or ML.

No
This device is a dental cement used for the permanent adhesion of dental restorations, not for treating diseases or conditions.

No

This device is a resin cement used for the final cementation of dental restorations, not for diagnosing conditions.

No

The device description clearly states it is a dual-cured self-adhesive resin cement with a tooth primer, which are physical materials, not software. The performance studies also focus on material properties and biocompatibility.

Based on the provided information, this device is not an IVD (In Vitro Diagnostic).

Here's why:

  • Intended Use: The intended use clearly describes the device's function as a dental cement for bonding various dental restorations to teeth and implant abutments. This is a direct application within the body (or on a structure intended to be within the body), not for testing samples taken from the body to diagnose a condition.
  • Device Description: The description details the chemical composition and hardening process of the cement, consistent with a material used for bonding in dentistry.
  • Lack of IVD Characteristics: There is no mention of analyzing biological samples (blood, urine, tissue, etc.), detecting specific analytes, or providing diagnostic information about a patient's health status.
  • Performance Studies: The performance studies focus on the physical and biological properties of the cement itself (film thickness, strength, biocompatibility), not on its ability to accurately detect or measure something in a biological sample.

Therefore, G-CEM ONE is a medical device, specifically a dental cement, but it does not meet the definition of an In Vitro Diagnostic device.

N/A

Intended Use / Indications for Use

  1. Cementation of all types of all ceramic, resin and metal-based inlays, onlays, crowns and bridges.
  2. Cementation of metal, ceramic, fiber posts, and cast post and cores.
  3. Cementation of all ceramic and composite veneers.
  4. Final cementation of crowns and bridges on implant abutments.

Product codes (comma separated list FDA assigned to the subject device)

EMA

Device Description

G-CEM ONE is a dual-cured self-adhesive resin cement with a tooth primer, G-CEM ONE ADHESIVE ENHANCING PRIMER. The mixed cement hardens through polymerization. The adhesive component is an acidic monomer which also can polymerize with frame-forming monomers. This copolymerizing reaction provides higher physical strength than resin-modified glass ionomer cements. Using the primer on the prepared tooth, surface modification and cement polymerization are promoted and hardened along with the cement. The cement syringe consists of Paste A and B, which are filled in a one-body/two chamber syringe. Both pastes are automixed with a mixing tip and applied directly to restorations or prepared cavity.

Mentions image processing

Not Found

Mentions AI, DNN, or ML

Not Found

Input Imaging Modality

Not Found

Anatomical Site

tooth - enamel, dentin

Indicated Patient Age Range

Not Found

Intended User / Care Setting

Not Found

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 (study type, sample size, AUC, MRMC, standalone performance, key results)

Performance Bench Tests:
It is confirmed that the device conforms to the required specifications of ISO 4049: 2019 Dentistry - Polymer-based restorative materials and Company Specification: 1AB-1500-3-10666.

Performance testing includes:

  1. Film thickness: ISO 4049: 2019 5.2.2 Film thickness of luting materials. Requirement: No more than 50 µm.
  2. Working time: ISO 4049: 2019 5.2.4 Working time, Class 1 and 3 luting materials. Requirement: No detectable change in the homogeneity.
  3. Setting time: ISO 4049: 2019 5.2.6 Setting time, Class 3 materials. Requirement: Not more than 10 min.
  4. Flexural strength: ISO 4049: 2019 5.2.9 Flexural strength. Requirement: Equal to or greater than 50 MPa.
  5. Water sorption: ISO 4049: 2019 5.2.10 Water sorption and solubility. Requirement: 40 µg/mm³ or less.
  6. Solubility: ISO 4049: 2019 5.2.10 Water sorption and solubility. Requirement: 7.5 µg/mm³ or less.
  7. Radiopacity: ISO 4049: 2019 5.5 Radiopacity. Requirement: Equal to or greater than the radiopacity of the same thickness of aluminum.

G-CEM ONE ADHESIVE ENHANCING PRIMER performance testing includes:

  1. Appearance: Company Specification 1AB-1500-3-10666 - Visual inspection. Requirement: Should be homogenous and free from foreign matters.
  2. Coat ability: Company Specification 1AB-1500-3-10666 - Apply a primer thinly on a glass plate using an applicator. Requirement: Form uniform film without unevenness.
  3. Color tone: Company Specification 1AB-1500-3-10666 - Visual inspection. Requirement: It must be light blue transparent liquid.
  4. Refractive index: Company Specification 1AB-1500-3-10666 - Refraction analysis. Requirement: 1.3960-1.3990.

Non-Clinical Performance Testing:
A biocompatibility assessment was completed according to ISO 10993-1:2009, Biological evaluation of medical devices - Part 1: Evaluation and testing within a risk management process.
G-CEM ONE is a dual-cured self-adhesive resin cement with a tooth primer "G-CEM ONE ADHESIVE ENHANCING PRIMER" and does come in contact with body tissues (tooth – enamel, dentin) for more than 24 hours.
In conclusion, biocompatibility of G-CEM ONE is acceptable device from the biological evaluation result.

  • Cytotoxicity (L929 MEM ELUTION TEST) Based on the criteria of the protocol of ISO 10993-5
  • Sensitivity (KLIGMAN MAXIMIZATION TEST) Based on the criteria of the protocol of ISO 10993-10
  • Irritation (PRIMARY ORAL (BUCCAL) IRRITATION TEST) Based on the criteria of the protocol of ISO 10993-10

Clinical Performance Testing:
No clinical testing has been performed on this device.

Key Metrics (Sensitivity, Specificity, PPV, NPV, etc.)

Not Found

Predicate Device(s): If the device was cleared using the 510(k) pathway, identify the Predicate Device(s) K/DEN number used to claim substantial equivalence and list them here in a comma separated list exactly as they appear in the text. List the primary predicate first in the list.

K153231

Reference Device(s): Identify the Reference Device(s) K/DEN number and list them here in a comma separated list exactly as they appear in the text.

K120243

Predetermined Change Control Plan (PCCP) - All Relevant Information for the subject device only (e.g. presence / absence, what scope was granted / cleared under the PCCP, any restrictions, etc).

Not Found

§ 872.3275 Dental cement.

(a)
Zinc oxide-eugenol —(1)Identification. Zinc oxide-eugenol is a device composed of zinc oxide-eugenol intended to serve as a temporary tooth filling or as a base cement to affix a temporary tooth filling, to affix dental devices such as crowns or bridges, or to be applied to a tooth to protect the tooth pulp.(2)
Classification. Class I (general controls). The device is exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to § 872.9.(b)
Dental cement other than zinc oxide-eugenol —(1)Identification. Dental cement other than zinc oxide-eugenol is a device composed of various materials other than zinc oxide-eugenol intended to serve as a temporary tooth filling or as a base cement to affix a temporary tooth filling, to affix dental devices such as crowns or bridges, or to be applied to a tooth to protect the tooth pulp.(2)
Classification. Class II.

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November 24, 2020

GC America Inc. Mark Heiss Director, Regulatory & Academic Affairs 3737 W. 127th Street Alsip, Illinois 60803

Re: K200798

Trade/Device Name: G-CEM ONE Regulation Number: 21 CFR 872.3275 Regulation Name: Dental Cement Regulatory Class: Class II Product Code: EMA Dated: March 23, 2020 Received: March 26, 2020

Dear Mark Heiss:

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 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,

1

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) 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 (OS) 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-devices/medical-device-safety/medical-device-reporting-mdr-howreport-medical-device-problems.

For comprehensive regulatory information about mediation-emitting products, including information about labeling regulations, please see Device (https://www.fda.gov/medicaldevices/device-advice-comprehensive-regulatory-assistance) CDRH and 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 DICE (https://www.fda.gov/medical-devices/device-advice-comprehensive-regulatorythe website assistance/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 Srinivas "Nandu" Nandkumar, Ph. D. Director DHT1B: Division of Dental Devices OHT1: Office of Ophthalmic, Anesthesia, Respiratory, ENT and Dental Devices Office of Product Evaluation and Quality Center for Devices and Radiological Health

Enclosure

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Section 4 - Indications for Use

DEPARTMENT OF HEALTH AND HUMAN SERVICES
Food and Drug Administration
Form Approved: OMB No. 0910-0120
Expiration Date: 06/30/2020
See PRA Statement below.

Indications for Use

510(k) Number (if known)K200798
Device NameG-CEM ONE

Indications for Use (Describe)

  1. Cementation of all types of all ceramic, resin and metal-based inlays, onlays, crowns and bridges.
  2. Cementation of metal, ceramic, fiber posts, and cast post and cores.
  3. Cementation of all ceramic and composite veneers.
  4. Final cementation of crowns and bridges on implant abutments.

Type of Use (Select one or both, as applicable)

Prescription Use (Part 21 CFR 801 Subpart D) Subpart C)Over-The-Counter Use (21 CFR 801

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Image /page/3/Picture/0 description: The image shows the text "GC" in a teal color. The text is surrounded by single quotation marks on both sides. The background is white.

Image /page/3/Picture/1 description: The image shows a geometric design with a partial outline of the number 7 on the left side. To the right of the number 7 are seven small, tilted rectangles arranged in a triangular pattern. The color of the number 7 outline and the rectangles is a teal or turquoise shade.

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510(k) Summary - K200798

    1. Submitter Information: GC America Inc.
      3737 W. 127th Street Alsip, IL 60803
Contact Person:Mark Heiss, D.D.S.
Phone:(708) 926-3090
Alternate Contact:Lori Rietman
Phone:(708) 926-3092
Fax:(708) 925-0373
Date Prepared:March 23, 2020
    1. Device Name: Proprietary Name: G-CEM ONE Classification Name: Dental cement Device Classification: Class II, 872.3275 Product Code: EMA
  • Predicate Devices: 3.

| Product | Applicant | 510(k) No. | Code No | Predicate | Decision
Date |
|-------------------------|--------------------|------------|---------|-----------|------------------|
| G-CEM LinkForce | GC America
Inc. | K153231 | EMA | Primary | 07/06/2016 |
| G-CEM LINKACE (GAM-200) | GC America
Inc. | K120243 | EMA | Reference | 06/27/2012 |

4. Description of Device:

G-CEM ONE is a dual-cured self-adhesive resin cement with a tooth primer, G-CEM ONE ADHESIVE ENHANCING PRIMER. The mixed cement hardens through polymerization. The adhesive component is an acidic monomer which also can polymerize with frame-forming monomers. This copolymerizing reaction provides higher physical strength than resin-modified glass ionomer cements. Using the primer on the prepared tooth, surface modification and cement polymerization are promoted and hardened along with the cement. The ce ment syringe consists of Paste A and B, which are filled in a one-body/two chamber syringe. Both pastes are automixed with a mixing tip and applied directly to restorations or prepared cavity.

Image /page/3/Picture/12 description: The image shows a G-CEM ONE self-adhesive resin cement syringe. The syringe has a brown dispensing tip on the left side and a black plunger on the right side. The label on the syringe reads "G-CEM ONE SELF ADHESIVE RESIN CEMENT A2 4.6g(2.7mL)".

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  • న. Indications for Use
      1. Cementation of all types of all ceramic, resin and metal-based inlays, onlays, crowns and bridges.
      1. Cementation of metal, ceramic, fiber posts, and cast post and cores.
      1. Cementation of all ceramic and composite veneers.
      1. Final cementation of crowns and bridges on implant abutments.

6. Package:

    1. Entrance Kit
      G-CEM ONE syringe (4.6 g / 2.7 mL) (1), G-CEM Automix Tip Regular (8), G-CEM Automix Tip for endo with Extension Tip (2), G-CEM ONE ADHESIVE ENHANCING PRIMER (1),
    1. Twin Refill G-CEM ONE syringe (4.6 g / 2.7 mL) (2), G-CEM Automix Tip Regular (15), G-CEM Automix Tip for endo with Extension Tip (5)
    1. Single Refill G-CEM ONE syringe (4.6 g / 2.7 mL) (1), G-CEM Automix Tip Regular (8), G-CEM Automix Tip for endo with Extension Tip (2)
    1. G-CEM ONE ADHESIVE ENHANCING PRIMER G-CEM ONE ADHESIVE ENHANCING PRIMER (1)
    1. Shades available: A2, AO3, Translucent, BO1, White opaque
    1. Shelf Life and Storage Conditions:
    • Shelf Life 2 years i
    • Recommended for optimal performance, store at temperature of 4-25°C (39.2-77.0°F) away from heat, moisture and direct sunlight.
    1. Performance Bench Tests:

It is confirmed that the device conforms to the required specifications of ISO 4049: 2019 Dentistry -Polymer-based restorative materials and Company Specification: 1AB-1500-3-10666.

Performance testing includes:

PropertyTest methodRequirement
1Film thicknessISO 4049: 2019
5.2.2 Film thickness of luting materialsNo more than 50 µm.
2Working timeISO 4049: 2019
5.2.4 Working time, Class 1 and 3 luting materialsNo detectable change in the homogeneity.
3Setting timeISO 4049: 2019
5.2.6 Setting time, Class 3 materialsNot more than 10 min.
4Flexural strengthISO 4049: 2019
5.2.9 Flexural strengthEqual to or greater than 50 MPa.
5Water sorptionISO 4049: 2019
5.2.10 Water sorption and solubility40 µg/mm³ or less.
6SolubilityISO 4049: 2019
5.2.10 Water sorption and solubility7.5 µg/mm³ or less.
7RadiopacityISO 4049: 2019
5.5 RadiopacityEqual to or greater than the radiopacity of the same thickness of aluminum.

G-CEM ONE

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PropertyTest methodRequirement
1AppearanceCompany Specification
1AB-1500-3-10666 - Visual inspectionShould be homogenous and free
from foreign matters
2Coat abilityCompany Specification
1AB-1500-3-10666 - Apply a primer thinly on a
glass plate using an applicator.Form uniform film without
unevenness
3Color toneCompany Specification
1AB-1500-3-10666 - Visual inspectionIt must be light blue transparent
liquid.
4Refractive indexCompany Specification
1AB-1500-3-10666 - Refraction analysis1.3960-1.3990

G-CEM ONE ADHESIVE ENHANCING PRIMER

10. Non-Clinical Performance Testing:

A biocompatibility assessment was completed according to ISO 10993-1:2009, Biological evaluation of medical devices - Part 1: Evaluation and testing within a risk management process.

G-CEM ONE is a dual-cured self-adhesive resin cement with a tooth primer "G-CEM ONE ADHESIVE ENHANCING PRIMER" and does come in contact with body tissues (tooth – enamel, dentin) for more than 24 hours.

In conclusion, biocompatibility of G-CEM ONE is acceptable device from the biological evaluation result.

Cytotoxicity (L929 MEM ELUTION TEST)

Based on the criteria of the protocol of ISO 10993-5

Sensitivity (KLIGMAN MAXIMIZATION TEST)

Based on the criteria of the protocol of ISO 10993-10

Irritation (PRIMARY ORAL (BUCCAL) IRRITATION TEST)

Based on the criteria of the protocol of ISO 10993-10

11. Clinical Performance Testing No clinical testing has been performed on this device.

    1. Comparison of Technology:
      The specifications that are important to determine substantial equivalency of a dental adhesive system are bond strengths associated to tooth structure (enamel and dentin) and other substrates. It is also important to evaluate the equivalence of sealing property of dentin tubules.

The bond strength of the applicant device to dentin is equivalent to that of the reference predicate device.

The curing mechanism of the applicant device and predicate device are substantially equivalent in principle. Therefore, the applicant device and predicate device are the same in function, and similar in composition and intended use. This supports that the compatibility of the applicant device is substantially equivalent to the predicate devices.

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All the components of the applicant device, G-CEM ONE and G-CEM ONE ADHESIVE ENHANCING PRIMER, have already been used in the predicate devices. The bonding mechanism of the predicate device is applying it to tooth structure, then bonding chemically and mechanically by polymerization of uncured methacrylate ester monomers. The subject device has been shown to be substantially equivalent to the predicate device.

The following differences may be noted between G-CEM ONE and the predicate device.

  • -The applicant device also has a primer which allows it to have additional indications, similar to that of the primary predicate device.
  • -The applicant device is a self-adhesive resin cement, and unlike the G-CEM LinkForce of an adhesive resin cement, it can be bonded to various materials without a primer.

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Applicant DevicePrimary DeviceReference Device
Trade nameG-CEM ONEG-CEM LinkForce
K153231G-CEM LINKACE (GAM-200)
K120243
ManufacturerGC CorporationGC CorporationGC Corporation
Product
categorySelf-adhesive resin cementAdhesive resin cementSelf-adhesive resin cement
Paste/Paste ratioPaste A / Paste B = 1.3 / 1.0 (w/w)Paste A / Paste B = 1.0 / 1.0 (w/w)Paste A / Paste B = 1.3 / 1.0 (w/w)
Indications for Use1. Cementation of all types of all ceramic,
resin and metal-based inlays, onlays,
crowns and bridges.
  1. Cementation of metal, ceramic, fiber posts,
    and cast post and cores.
  2. Cementation of all ceramic and composite
    veneers.
  3. Final cementation of crowns and bridges
    on implant abutments. | 1. Cementation of all types of all ceramic,
    resin and metal-based inlays, onlays,
    crowns and bridges.
  4. Cementation of metal, ceramic, fiber posts,
    and cast post and cores.
  5. Cementation of all ceramic and composite
    veneers.
  6. Permanent cementation of crowns and
    bridges on implant abutments. | 1. Cementation of all types of all ceramic,
    resin and metal-based inlays, onlays,
    crowns and bridges.
  7. Cementation of metal, ceramic, fiber posts,
    and cast post and cores. |
    | Product
    description | The components consist of Paste A and B,
    which are filled in a one-body syringe. Both
    pastes are automixed with a mixing tip and
    directly applied to restorations or the
    prepared cavity. | The components consist of Paste A and B,
    which are filled in a one-body syringe. Both
    pastes are automixed with a mixing tip and
    directly applied to restorations or the
    prepared cavity. | The components consist of Paste A and B,
    which are filled in a one-body syringe. Both
    pastes are automixed with a mixing tip and
    directly applied to restorations or the
    prepared cavity. |
    | Instruction for use | 1. Tooth preparation
  8. Application of G-CEM ONE ADHESIVE
    ENHANCING PRIMER (Optional)
  9. Restoration preparation
  10. Dispensing
  11. Cementation
  12. Excess cement removal
  13. Final set
  14. Final polishing | 1. Try-fit of the restoration
  15. Pre-treatment of the restoration
  16. Pre-treatment of the preparation
  17. Dispensing
  18. Cementation
  19. Excess cement removal
  20. Final set
  21. Final polishing and adjustments | 1. Tooth preparation
  22. Restoration preparation
  23. Dispensing
  24. Cementation
  25. Excess cement removal
  26. Final set
  27. Final polishing |
    | Light curing
    specification | Light cure using a light curing unit.
    10 sec. (High Power LED Light)
    (>1200mW/cm2)
    20 sec. (Halogen/LED) (700 mW/cm2) | Light cure using a light curing unit.
    10 sec. (High Power LED Light)
    (>1200mW/cm2)
    20 sec. (Halogen/LED) (700 mW/cm2) | Light cure using a light curing unit.
    10 sec. (High Power LED Light)
    (>1200mW/cm2)
    20 sec. (Halogen/LED) (700 mW/cm2) |
    | Table 5.1 (Continued) | | | |
    | | Applicant Device | Primary Device | Reference Device |
    | Trade name | G-CEM ONE | G-CEM LinkForce
    K153231 | G-CEM LINKACE (G-CEM LINKACE (GAM-
    200))
    K120243 |
    | Manufacturer | GC Corporation | GC Corporation | GC Corporation |
    | Comparison of
    Technology | Methacrylates contained in Paste A
    polymerize by polymerization initiators
    contained in Paste A and Paste B.
    In addition, they also polymerize by light
    irradiation with photo polymerization initiators
    contained in Paste A.
    Furthermore, using G-CEM ONE ADHESIVE
    ENHANCING PRIMER for the cavity and
    abutment tooth, surface modification and
    cement polymerization are promoted and
    hardened with the cement.
    Methacrylates contained in this material are
    very hydrophobic and set material is stable.
    Therefore, the ingredients in the cured
    material are difficult to elute in water. | Methacrylates contained in Paste A
    polymerize by polymerization initiators
    contained in Paste A and Paste B.
    In addition, they also polymerize by light
    irradiation thanks to photo polymerization
    initiators contained in Paste A.
    Furthermore, using the mixture of G-Premio
    BOND and G-Premio BOND DCA for the
    cavity and abutment tooth, surface
    modification and cement polymerization are
    promoted and hardened with the cement.
    Methacrylates contained in this material are
    very hydrophobic and set material is stable.
    Therefore, the ingredients in the cured
    material are difficult to elute in water. | Methacrylates contained in Paste A
    polymerize by polymerization initiators
    contained in Paste A and Paste B.
    In addition, they also polymerize by light
    irradiation thanks to photo polymerization
    initiators contained in Paste A.
    Methacrylates contained in this material are
    very hydrophobic and set material is stable.
    Therefore, the ingredients in the cured
    material are difficult to elute in water. |

Table 5.3. Comparison of applicant and predicate

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13. Conclusion

Based on similarities in intended use, mode of action, and performance testing, G-CEM ONE is substantially equivalent to the predicate device.