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Status unknownNCT02991664Updated Dec 13, 2016

Clinical Performance of a Glass-ionomer Restorative System in Extended-sized Cavities

An interventional study of Equia Forte and G-aenial Posterior in Dental Caries Class II, sponsored by Hacettepe University. Status unknown at 1 site in Turkey. Open to participants aged 20 Years to 50 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2016-12-13.

Sponsored by Hacettepe University · Not applicable, Interventional, and Treatment

The sponsor has not verified this record recently (last verified Dec 2016), so the status shown — last known as Enrolling by invitation — may be out of date.
Phase
Not applicable
Study type
Interventional
Enrollment
50
Allocation
Randomized
Ages
20 Years to 50 Years
Sex
All
01

Study summary

The aim of this clinical trial was to compare the clinical performances of a glass ionomer restorative system with a micro hybrid resin based composite in extended sized class II cavities. A total of 100 class 2 lesions were restored with a glass ionomer restorative system (Equia Forte) or a micro hybrid composite (G-aenial Posterior). Restorations were evaluated at baseline and yearly during 6 years according to the modified-USPHS criteria. Data were analyzed with Cohcran's Q and McNemar's tests (p\<0.05).

Read the detailed description

Since the introduction of glass ionomers many modifications of these materials have been performed over the years. Compared to other permanent filling materials like resin-based composites, glass ionomers show several advantages, such as the ability to adhere to moist enamel and dentin and anti-cariogenic properties such as the long-term fluoride release. So, it was doubtful that glass ionomers represent a capable counterpart of amalgam or resin-based composites in posterior teeth.

02

Conditions studied

  • Dental Caries Class II

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Keywords

  • glass ionomer cement
  • composite resin
03

In context

Dental Caries

1,109 studies on the registry are indexed under Dental Caries; 197 are open to participants now.

This study's enrollment of 50 is below the median of 60 across 916 interventional studies indexed under Dental Caries.

Browse Dental Caries studies →

Lead sponsor

Hacettepe University is the lead sponsor of 983 studies on the registry; 212 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
20 Years to 50 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

  1. a need for at least two but not more than four posterior toothcolored restorations;
  2. the presence of teeth to be restored in occlusion;
  3. teeth that were symptomless and vital;
  4. a normal periodontal status;
  5. a good likelihood of recall availability.

Exclusion criteria

Exclusion Criteria:

  1. partly erupted teeth;
  2. absence of adjacent and antagonist teeth
  3. poor periodontal status;
  4. adverse medical history;
  5. potential behavioral problems.
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Investigator)
Enrollment
50 participants (actual)

Study arms

  • Active comparator
    Equia Forte, randomly applied

    Placing glass ionomer restorations, the dentin and enamel of cavities were washed, and briefly dried. Equia Forte Fil was injected into the cavity. Isolation was maintained using cotton rolls and a saliva ejector. After the setting time of 2.5 minutes, the restoration was polished wet using high-speed fine diamonds. When the restoration was briefly dried, Equia Forte Coat was applied and photocured for 20 seconds using a photo-curing light.

    Other: Equia Forte

  • Active comparator
    G-aenial Posterior, randomly applied

    After etching procedure, the enamel and dentin were conditioned with G-aenial adhesive using a microtip applicator, left undisturbed for five to 10 seconds, and then dried thoroughly for five seconds with oil-free air under air pressure, G-aenial posterior composite resin was applied with the incremental technique (2 mm thick layers) and light-cured for 20 seconds. Finally, the restoration was shaped with finishing diamonds and silicon instruments.

    Other: G-aenial Posterior

Interventions

  • OtherEquia Forte

    Glass ionomer restorative system

    Also known as: Glass ionomer restorative system

  • OtherG-aenial Posterior

    Micro hybrid composite resin

    Also known as: Micro hybrid composite resin

06

What researchers measure

Primary outcomes

  1. Observers evaluated the restorations was performed using the modified United State Public Health Service criteria regarding marginal adaptation.

    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.

    Time frame: From baseline to 6 year the change of restorations was evaluated

  2. Observers evaluated the restorations was performed using the modified United State Public Health Service criteria regarding marginal discoloration.

    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.

    Time frame: From baseline to 6 year the change of restorations was evaluated

  3. Observers evaluated the restorations was performed using the modified United State Public Health Service criteria regarding retention rate.

    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

    Time frame: From baseline to 6 year the change of restorations was evaluated

  4. Observers evaluated the restorations was performed using the modified United State Public Health Service criteria regarding anatomic form.

    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.

    Time frame: From baseline to 6 year the change of restorations was evaluated

  5. Observers evaluated the restorations was performed using the modified United State Public Health Service criteria regarding color change

    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 failedand 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.

    Time frame: From baseline to 6 year the change of restorations was evaluated

07

Study locations

1 site
  • Hacettepe University School of Dentistry
    Ankara, 06100, Turkey
08

References and documents

Publications

  • 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 ↗

Individual participant data

Plan to share: No

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Dec 13, 2016, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT02991664
Lead sponsor
Hacettepe University
Responsible party
Zeynep Bilge Kutuk (Research Assistant, Hacettepe University) — Principal investigator
First posted
Dec 13, 2016
Start date
Dec 2015
Primary completion
Dec 2016 (estimated)
Completion
Dec 2021 (estimated)
Last update
Dec 13, 2016

Study contacts

Sevil Gurgan, Professor
study director · Hacettepe University School of Dentistry

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

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This study is status unknown, as verified in Dec 2016. You cannot join it, but the record below documents what was studied.

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