Skip to content

Effect of One-step Versus Multistep Polishing Protocol on Class IV Composite Restorations.

Esthetic Performance and Surface Roughness of Class IV Nanohybrid Composite Restorations Following One-step Versus Multistep Polishing Protocol: a Randomized Clinical Trial

Status
Not yet recruiting
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06732115
Enrollment
50
Registered
2024-12-13
Start date
2025-08-01
Completion date
2026-03-01
Last updated
2025-03-12

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

Conditions

Esthetic Restorations

Keywords

Surface roughness, class IV, nanohybrid composite, multistep polishing system., one-step polishing system, surface staining

Brief summary

This study aims to evaluate the effectiveness of various finishing and polishing techniques for composite resins used in dental restorations, with a focus on minimizing discoloration and surface roughness over time. Discoloration due to plaque accumulation and surface staining can lead to esthetic concerns, resulting in premature restoration replacement and increased costs. Prior research highlights that esthetic failures, such as color alterations and surface staining, are key reasons for the failure of anterior restorations. Given the contradictory findings in previous studies on finishing and polishing methods, this research seeks to determine whether one-step polishing system will have the same effect as the multistep system in terms of esthetic performance and surface roughness of nanohybrid resin composite class IV restorations. The main operator will compare between OneGloss (Shofu) the intervention and Super-Snap X-treme (Shofu) the comparator. Patients will be evaluated immediately following polishing then after 3 months, 6 months, and 12 months.

Interventions

PROCEDUREOne-step polishing system with nanohybrid resin composite restorations.

one-step polishing system using OneGloss by Shofu

PROCEDUREMultistep system polishing system Super-Snap X-treme (Shofu) with nanohybrid resin composite restorations.

A multi-step polishing system

Sponsors

Cairo University
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Outcomes Assessor)

Masking description

statistician

Eligibility

Sex/Gender
ALL
Healthy volunteers
Yes

Inclusion criteria

* Patient related criteria: * Patients with good general health. * Patients who agreed to the consent and committed to follow-up period * No specific age range. * Both genders. * Low and moderate caries risk patients * Normal occlusion * Tooth related criteria * Fully erupted permanent anterior teeth with class IV. * Active caries, fractures, or defective Restorations in anterior teeth.

Exclusion criteria

* Patient related criteria * Patient with bad oral hygiene. * Patients with tetracycline or fluorosis staining. * Patients who could/would not participate in all times of follow-up. * Patients participating in more than 1 dental study. * Patient received fluoride varnish, or during orthodontic treatment. * Patients with tendency to do bleaching during the study. * Heavy Smokers * Patients who are alcoholic and addicted Tooth related criteria * Untreated periodontal disease was not allowed * Fully erupted anterior teeth with no defects

Design outcomes

Primary

MeasureTime frameDescription
Surface Luster (success rate)24hours, 3 months, 6months and 12 monthsScoring system (ordinal) 5: Luster comparable to enamel 4: Slightly dull, not noticeable from speaking distance, some isolated pores 3: Dull surface but acceptable if covered with film of saliva, multiple pores on more that one-third of the surface 2: Rough surface, cannot be masked by saliva film, simple polishing not sufficient 1: Very rough, unacceptable plaque-retentive surface

Secondary

MeasureTime frameDescription
Surface Staining24hours, 3 months, 6months and 12 monthsScoring system (ordinal) 5: No staining 4: Minor Staining, easily removable by polishing 3: Moderate surface staining that may also be present on other teeth, not esthetically unacceptable 2: Unacceptable surface staining, major intervention necessary 1: severe surface and/or subsurface staining, not acceptable for intervention
Marginal Staining24hours, 3 months, 6months and 12 monthsScoring system (ordinal) 5 No staining 4 Minor staining, easily removable by polishing 3 Moderate marginal staining, not esthetically unacceptable 2 Pronounced marginal staining; major intervention necessary 1 Deep marginal staining, not accessible for intervention
Color Match24hours, 3 months, 6months and 12 monthsScoring system (ordinal) 1. Good color match, no difference in shade and translucency 2. Minor Deviation 3. Clear deviation but acceptable. Does not affect esthetic 3.1: More opaque 3.2: More translucent 3.3: Darker 3.4: Brighter
Surface Roughness24hours, 3 months, 6months and 12 monthsSurface roughness means (Ra)

Countries

Egypt

Contacts

Primary ContactNoreen A Labib, Masters Degree student
noreen.labib@dentistry.cu.edu.eg+201068487006

Outcome results

None listed

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