Effect of Using Shade Blocker Versus Chameleon Effect of Two Single Shade of Resin Composite in Class IV Restorations

Effect of Using Shade Blocker Versus Chameleon Effect on Shade Matching of Two Single-shade Resin Composite Materials in Class IV Restorations: A One Year Randomized Clinical Trial

Status

UNKNOWN

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT05315518

Enrollment

Registered

2022-04-07

Start date

2022-09-05

Completion date

2023-04-07

Last updated

2022-07-19

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

Conditions

Discoloration, Tooth

Brief summary

Aim of this study will be conducted to compare the shade matching and clinical performance of shade blocker versus chameleon effect of two single-shade of universal resin composite in class IV restorations over 1 year evaluation period

Detailed description

The color matching of both groups will be evaluated visually using modified USPH criteria

Interventions

DIAGNOSTIC_TESTsingle-shade universal resin composite (omnichroma) with blocker( omnichroma blocker)

(OMNICHROMA BLOCKER) is indicated for preventing shade-matching interference in Class IV restorations, Masking dark dentition and dentin. In cases where there is a lack of tooth structure to bond to, (BLOCKER) works as a supplementary product to provide a lingual wall to the restoration, prevent shade-match obstruction and mask staining.

Study design

Allocation

RANDOMIZED

Intervention model

PARALLEL

Primary purpose

TREATMENT

Masking

SINGLE (Outcomes Assessor)

Eligibility

Sex/Gender

ALL

Age

20 Years to 45 Years

Healthy volunteers

Yes

Inclusion criteria

moderate class IV defect with no lingual wall presence of favorable occlusion and teeth are in normal contact with the adjacent teeth good oral hygiene cooperative patients \-

Exclusion criteria

* tooth hypersensitivity severe periodontal affection non vital teeth heavy smoking

Design outcomes

Primary

Measure	Time frame	Description
shade matching	12 months	the shade matching of both groups will be assessed visually by using modified USPH criteria. score: 1- Alpha : the restoration match the shade and translucency of the adjacent tooth 2-Bravo : there is a mismatch in the shade and translucency but it is within a normal range of tooth shade 3- Charlie: the mismatch is beyond the normal range of the tooth shade and translucency

Contacts

Primary Contactsarah ahmed, master

sarah.mohamed@dentistry.cu.edu.eg01015139628

Outcome results

None listed

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