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Dental CariesGISNCT02616198

6-year Clinical Evaluation of Glass Ionomer Cements (GIS) With Resin Coating on Posterior Teeth

A study testing EquiaFil G-coat, EquiaFil Fuji Varnish and Riva SC G-coat in people with Dental Caries, run by Ege University.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The aim of this study was to evaluate the long-term clinical performance of two highly viscous encapsulated GICs (EquiaFil and Riva SC) covered with two different coatings (Equia Coat and Fuji Varnish) over 6-year using modified United State Public Health Service (USPHS) criteria. Read more about this study

Who is it for?
Ages 17 to 55 yearsHealthy volunteers can take part
Conditions the study is for
Dental Caries
What is being tested?
EquiaFil G-coat, EquiaFil Fuji Varnish and Riva SC G-coat
Could I receive a placebo?
No, everyone receives an active treatment
How many people
54 participants
Where
No sites listed yet
Study dates
Jan 2009to Sep 2015
Phase
Interventional
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 17 to 55 years
  • All sexes
  • Healthy volunteers accepted
  • Child, Adult

Who may be able to join

  • having good oral hygiene;
  • need for at least two or more posterior restorations in contact with neighbouring tooth and in occlusion with antagonist teeth;
  • teeth planned to be restore should be vital and symptomless;
  • the cavity isthmus size should be more than 1/3 of the intercuspal distance.

Who cannot join

  • absence of adjacent and antagonist teeth;
  • teeth with periodontal problems;
  • teeth with preoperative pain or pulpal inflammations;
  • teeth formerly subjected to direct pulp capping;
  • patients having severe systemic diseases, allergies or adverse medical history.

About this study

Official title: A Prospective 6-year Clinical Study Evaluating Reinforced Glass Ionomer Cements With Resin Coating on Posterior Teeth

The aim of this study was to evaluate the long-term clinical performance of two highly viscous encapsulated GICs (EquiaFil and Riva SC) covered with two different coatings (Equia Coat and Fuji Varnish) over 6-year using modified United State Public Health Service (USPHS) criteria.

A total of 256 restorations were made with EquiaFil and Riva SC. Equia Coat or Fuji Varnish was used randomly on the surface of the restorations. The restorations were evaluated at baseline, 6, 12, 18 months and 6 years after placement using modified USPHS criteria. The results were evaluated with Pearson Chi-Square and Mann Whitney U-test (p< 0.05).

Read the detailed description

The aim of this study was to evaluate the long-term clinical performance of two highly viscous encapsulated GICs (EquiaFil and Riva SC) covered with two different coatings (Equia Coat and Fuji Varnish) over 6-year using modified United State Public Health Service (USPHS) criteria.

Fifty-four patients having Class I and II restorations/caries were included in the study. A total of 256 restorations were made with EquiaFil (GC Corp, Japan) and Riva SC (SDI, Australia). Equia Coat or Fuji Varnish was used randomly on the surface of the restorations. After cavity preparations, the teeth were randomly restored with one glass ionomer cement and coated with Equia Coat or Fuji Varnish. The restorations were evaluated at baseline, 6, 12, 18 months and 6 years after placement using modified USPHS criteria. Two evaluators checked color-match, marginal discoloration, marginal adaptation, caries formation, anatomical form, postoperative sensitivity and retention rate and photographs were taken at each recalls. The results were evaluated with Pearson Chi-Square and Mann Whitney U-test (p< 0.05).

The 18-month results were presented at the CED IADR congress iheld in Barcelona in 2010 (Turkun LS, \& Kanic O ,Clinical evaluation of new glass ionomer coating combined systems for 18-months Journal of Dental Research 89 (Special Issue B) Abstract #402.) Gurgan S et al. also mentioned our 18-month results in their published manuscript ( Gurgan S,Kutuk ZB, Ergin E, Oztas ZZ \& Cakir FY (2015) Four-year randomized clinical trial to evaluate the clinical performance of a glass ionomer restorative system Operative Dentistry 40(2) 134-143).

Conditions
Dental Caries
Being tested
EquiaFil G-coat, EquiaFil Fuji Varnish, Riva SC G-coat, Riva SC Fuji Varnish
Keywords
glass ionomers, surface coating, clinical trial
Medical subject headings
Dental Caries

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • EquiaFil G-coatOther

    The old restorations or new caries were removed with anaesthetic solutions when necessary, a matrix was applied for two surface cavities and the restoration was performed with EquiaFil in bulk after mixing 10 sec. in the mixing machine. After 2min 30 sec, the restoration was contoured and the occlusion adjusted.Then the surface was coated with G-coat and light cured for 10 sec. The restorations were controlled by 2 independent examiners at baseline, 6-12-18 months and 6 years according to the United State Public Health Service criteria.

  • EquiaFil Fuji VarnishOther

    The old restorations or carious lesions were removed with anaesthetic solutions when necessary, a matrix was applied for two surface cavities and the restoration was performed with EquiaFil in bulk after mixing in the mixing machine. After 2min 30 sec, the restoration was contoured and the occlusion adjusted.Then the surface was coated in 2 layers of Fuji Varnish. The restorations were controlled by 2 independent examiners at baseline, 6-12-18 months and 6 years according to the United State Public Health Service criteria.

  • Riva SC G-coatOther

    The old restorations or carious lesions were removed and a sectional matrix was applied for two surface cavities and the restoration was performed with Riva SC in bulk after mixing 10 sec. in the mixing machine. The glass ionomer was packed with hand instruments in the cavities and 2min after the first setting the restoration was contoured and the occlusion adjusted.Then the surface was coated with G-coat resin and light cured for 10 sec. The restorations were controlled by 2 independent examiners at baseline, 6-12-18 months and 6 years according to the United State Public Health Service criteria.

  • Riva SC Fuji VarnishOther

    The caries lesions were removed with diamond and stainless steel burs, a sectional matrix was applied for restoring two surface cavities and the restoration was performed with Riva SC in bulk after mixing 10 sec. in the mixing machine. After the first setting of 2min, the restoration was contoured and the occlusion adjusted.Then the surface was coated in 2 layers with Fuji Varnish. The restorations were controlled by 2 independent examiners at baseline, 6-12-18 months and 6 years according to the United State Public Health Service criteria.

Study groups in NCT02616198
Study groupRoleWhat they receive
EquiaFil G-coatActive comparatorEquiaFil G-coat combination was applied on one randomly selected cavity to be restored
Receives: Other: EquiaFil Fuji Varnish; Other: Riva SC G-coat; Other: Riva SC Fuji Varnish
EquiaFil Fuji VarnishActive comparatorEquiaFil Fuji Varnish combination was applied on one randomly selected cavity to be restored
Receives: Other: EquiaFil G-coat; Other: Riva SC G-coat; Other: Riva SC Fuji Varnish
Riva SC G-coatActive comparatorRiver SC G-coat combination was applied on one randomly selected cavity to be restored
Receives: Other: EquiaFil G-coat; Other: EquiaFil Fuji Varnish; Other: Riva SC Fuji Varnish
Riva SC Fuji VarnishActive comparatorRiver SC Fuji Varnish combination was applied on one randomly selected cavity to be restored
Receives: Other: EquiaFil G-coat; Other: EquiaFil Fuji Varnish; Other: Riva SC G-coat

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Evaluating differently coated glass ionomer cements on posterior teeth with United State Public Health Service criteria regarding marginal adaptation by 2 independent evaluators

    Marginal adaptation was evaluated by 2 independent clinicians. Visual inspection with a mirror at 18 inches was performed . A score means the higher score of clinical acceptability while C and D score means that the restoration has failed and needs to be replaced. Alpha 1: Harmonious outline Alpha 2: Marginal gap (max 100µ) with discoloration (removable) Bravo: Marginal gap (> 100µ) with discoloration (unremovable) Charlie: The restoration is fractured or missed

    Measured: 6 years

  2. Evaluating differently coated glass ionomer cements on posterior teeth with United State Public Health Service criteria regarding marginal discolouration by 2 independent evaluators

    Marginal discolouration was evaluated by 2 independent clinicians. Visual inspection with a mirror at 18 inches was performed . A score means the higher score of clinical acceptability while C score means that the restoration has failed and needs to be replaced. Alpha: No discoloration anywhere along the margin between the restoration and the adjacent tooth.

    Bravo: Slight discoloration along the margin between the restoration and the adjacent tooth.

    Charlie: The discoloration penetrated along the margin of the restorative material in a pulpal direction.

    Measured: 6 years

  3. Evaluating differently coated glass ionomer cements on posterior teeth with United State Public Health Service criteria regarding retention rate by 2 independent evaluators

    Retention rate was evaluated by 2 independent clinicians. Visual inspection with a mirror at 18 inches was performed . A score means the higher score of clinical acceptability while C and D score means that the restoration has failed and needs to be replaced. Alpha 1:Clinically excellent Alpha 2: Clinically good with slight deviations from ideal performance, correction possible without damage of tooth or restoration Bravo: Clinically sufficient with few defects, corrections or repair of the restoration possible Charlie: Restoration is partially missed Delta: Restoration is totally missed

    Measured: 6 years

  4. Evaluating differently coated glass ionomer cements on posterior teeth with United State Public Health Service criteria regarding anatomic form by 2 independent evaluators

    Anatomic form was evaluated by 2 independent clinicians. Visual inspection with a mirror at 18 inches was performed . A score means the higher score of clinical acceptability while C score means that the restoration has failed and needs to be replaced. Alpha 1: Continuous with existing anatomical form Alpha 2: Slightly discontinuous due to some chipping on the proximal ridge Bravo: Discontinuous with existing anatomical form due to material loss but proximal contact still present Charlie: Proximal contact is lost with ridge fracture

    Measured: 6 years

  5. Evaluating differently coated glass ionomer cements on posterior teeth with United State Public Health Service criteria regarding colour changes by 2 independent evaluators

    Colour changes was evaluated by 2 independent clinicians. Visual inspection with a mirror at 18 inches was performed . A score means the higher score of clinical acceptability while C score means that the restoration has failed and needs to be replaced. Alpha: The restoration matches the adjacent tooth structure in color and translucency.

    Bravo: Light mismatch in color, shade or translucency between the restoration and the adjacent tooth.

    Charlie: The mismatch in color and translucency is outside the acceptable range of tooth color and translucency.

    Measured: 6 years

Secondary outcomes (1)
  1. Effects of resin coating on the performance of glass ionomer cements according to the United State Public Health Service criteria regarding marginal adaptation, marginal discolouration, retention rate, and colour changes by 2 independent evaluators

    The effect of different coatings on the clinical performance of the different glass ionomers tested was evaluated with United State Public Health Service criteria at baseline, 6-12-18 months and 6-years. For the evaluation 2 independent evaluators using dental problem and mirrors evaluated the resin coatings according to their retention, marginal adaptation, marginal discolouration, and colour match. There were 4 evaluation scores. Alpha meaning a perfect resin coating, Bravo meaning a coating partially effective but still clinically acceptable and Charlie and Delta meaning that the coating was partially to totally missed.

    Measured: 6 years

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted26 Nov 2015 (estimated)
  2. Study startJan 2009
  3. Primary completionSep 2009
  4. Study completionSep 2015

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Crossover
Masking
Single blind
Who is masked
Participant
Enrolment
54 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT02616198
Sponsor's protocol ID
08-10.1/6
Acronym
GIS
Status last verified
Nov 2015
First submitted
20 Nov 2015
Last updated
26 Nov 2015
Results posted
No
Data monitoring committee
Yes

Publications

  • Sidhu SK. Glass-ionomer cement restorative materials: a sticky subject? Aust Dent J. 2011 Jun;56 Suppl 1:23-30. doi: 10.1111/j.1834-7819.2010.01293.x.

    PubMed 21564113
  • Lohbauer U (2010) Dental glass ionomer cements as permanent filling materials? Properties, limitations and future trends. Materials 3(1) 76-96.

  • Diem VT, Tyas MJ, Ngo HC, Phuong LH, Khanh ND. The effect of a nano-filled resin coating on the 3-year clinical performance of a conventional high-viscosity glass-ionomer cement. Clin Oral Investig. 2014 Apr;18(3):753-9. doi: 10.1007/s00784-013-1026-z. Epub 2013 Jul 7.

    PubMed 23832616
  • Tyas MJ. Clinical evaluation of glass-ionomer cement restorations. J Appl Oral Sci. 2006;14 Suppl:10-3. doi: 10.1590/s1678-77572006000700003.

    PubMed 19089080
  • Frankenberger R, Garcia-Godoy F, Kramer N. Clinical Performance of Viscous Glass Ionomer Cement in Posterior Cavities over Two Years. Int J Dent. 2009;2009:781462. doi: 10.1155/2009/781462. Epub 2010 Feb 22.

    PubMed 20339470
  • Ersin NK, Candan U, Aykut A, Oncag O, Eronat C, Kose T. A clinical evaluation of resin-based composite and glass ionomer cement restorations placed in primary teeth using the ART approach: results at 24 months. J Am Dent Assoc. 2006 Nov;137(11):1529-36. doi: 10.14219/jada.archive.2006.0087.

    PubMed 17082278
  • Burke FJ, Siddons C, Cripps S, Bardha J, Crisp RJ, Dopheide B. Clinical performance of reinforced glass ionomer restorations placed in UK dental practices. Br Dent J. 2007 Jul 14;203(1):E2; discussion 40-1. doi: 10.1038/bdj.2007.529. Epub 2007 Jun 1.

    PubMed 17546060
  • Bonifacio CC, Werner A, Kleverlaan CJ. Coating glass-ionomer cements with a nanofilled resin. Acta Odontol Scand. 2012 Dec;70(6):471-7. doi: 10.3109/00016357.2011.639307. Epub 2011 Dec 12.

    PubMed 22149968
  • Friedl K, Hiller KA, Friedl KH. Clinical performance of a new glass ionomer based restoration system: a retrospective cohort study. Dent Mater. 2011 Oct;27(10):1031-7. doi: 10.1016/j.dental.2011.07.004. Epub 2011 Aug 15.

    PubMed 21840585
  • Basso M, Brambilla E, Benites MG, Giovannardi M & Ionescu AC (2015) Glass ionomer cement for permanent dental restorations: a 48-months, multi-center, prospective clinical trial Stomatology Education Journal 2(1) 25-35.

  • Miletic I, Baraba A, Juic IB & Anic I (2013) Evaluation of a glass-ionomer based restoration system- a one year pilot study Journal of Minimum Intervention in Dentistry 6 87-95.

  • Gurgan S, Kutuk ZB, Ergin E, Oztas SS, Cakir FY. Four-year randomized clinical trial to evaluate the clinical performance of a glass ionomer restorative system. Oper Dent. 2015 Mar-Apr;40(2):134-43. doi: 10.2341/13-239-C. Epub 2014 Oct 9.

    PubMed 25299703

Questions about this trial

What is this clinical trial studying?

A study testing EquiaFil G-coat, EquiaFil Fuji Varnish and Riva SC G-coat in people with Dental Caries, run by Ege University.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 4 inclusion and 5 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 26 Nov 2015. Status can change between updates, so confirm with the study contact before making plans.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Evaluating differently coated glass ionomer cements on posterior teeth with United State Public Health Service criteria regarding marginal adaptation by 2 independent evaluators (time frame: 6 years). The study lists 5 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT02616198, which also lists 12 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 26 Nov 2015.

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