Skip to content

Twenty-Four-Month Clinical Comparison of Two Bulk-Fill and Microhybrid Composite Restorations

Twenty-Four-Month Clinical Comparison of Two Bulk-Fill and Microhybrid Composite Restorations

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04306549
Acronym
Clinical
Enrollment
25
Registered
2020-03-13
Start date
2016-08-03
Completion date
2019-01-04
Last updated
2020-03-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Dental Restoration Failure of Marginal Integrity

Keywords

Clinical study, USPHS criteria, bulk-fill, resin composite, Class II

Brief summary

ABSTRACT Objective The aim of this study was to evaluate the clinical performance of one microhybrid and two bulk-fill resin composites in Class II cavities for up to two years. Materials and methods In total, 75 Class II restorations were made in 25 patients, using three restorative materials: two nanohybrid bulk-fill resin composites, Sonic Fill (SF) and x-tra fil (XF), and a microhybrid composite, Filtek Z-250 (FZ). The restorations were blindly evaluated by two examiners at baseline and at 6, 12, and 24 months, using U.S. Public Health Service (USPHS) criteria. The restoration groups for each category were compared using the Pearson chi-square test, and the Cochran Q-test was used to compare the changes across different time points within each restorative material (p \<0.05).

Interventions

OTHERBulk-Fill and Microhybrid Composite Resins

Clinical Comparison of Composite Restorations (Two Bulk-Fill and one Microhybrid Composite Resin) to the USPHS Criterias

Sponsors

University of Beykent
CollaboratorOTHER
Çanakkale Onsekiz Mart University
CollaboratorOTHER
Tokat Gaziosmanpasa University
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 22 Years
Healthy volunteers
Yes

Inclusion criteria

* Patient in need of restoration of caries lesion (diagnosed with bitewing radiograph and clinical examination); * teeth in need of restoration to be first or second molars or permanent premolars; * at least three Class II restorations required in each patient and the number of restorations of each material to be equal in each patient; * the antagonist and adjacent tooth in contact; * pulp vitalized and free of painful symptoms; teeth involved not to have undergone direct pulp capping; * no history of hypersensitivity in the teeth to be restored; * permanent dentition; * good oral health and absence of periodontal disease; * patients not to have suffered from systemic diseases or allergies; * absence of deleterious habits, xerostomia, and bruxism.

Exclusion criteria

* Fewer than 20 teeth; * history of existing tooth sensitivity; * known allergy to resin-based materials or any of the other materials used in this study; * pregnancy or breastfeeding; * chronic use of anti-inflammatory drugs, analgesic, and/or psychotropic drugs; * non-vital teeth; * abutment teeth for fixed or removable prostheses.

Design outcomes

Primary

MeasureTime frameDescription
Clinical AcceptabilityTwenty-Four-MonthOne week after restoration placement (baseline), patients were recalled and restorations were examined clinically. Direct clinical evaluation of restorations was performed using the USPHS criteria by two independent investigators using mirrors, probes, and bitewing radiographs and scored as Alpha, Bravo, or Charlie. Alpha corresponded to excellent, Bravo to clinically acceptable, and Charlie to clinically unacceptable results. Patients were recalled at 6, 12, and 24 months for assessments of the restorations, using the same criteria as at baseline. At each recall, the same two calibrated evaluators, who were blinded to the restoratives used for cavities and patients, examined the restorations. To ensure a double-blind study, the evaluators were not informed about which filling material had been used on which teeth.

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026