CClinicalTrials.gg
Status unknownNCT04840524Updated Jun 18, 2021

Effect of Preparation Design on the Functional and Esthetic Outcome of CAD/CAM Lithium Disilicate Laminate Veneers

An interventional study of Laminate veneers preparation in Dental Disorders Hard Tissues of Teeth and Tooth Discoloration, sponsored by Cairo University. Status unknown at 1 site in Egypt. Open to participants aged 18 Years to 60 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2021-06-18.

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

The sponsor has not verified this record recently (last verified Jun 2021), so the status shown — last known as Active, not recruiting — may be out of date.
Phase
Not applicable
Study type
Interventional
Enrollment
10
Allocation
Randomized
Ages
18 Years to 60 Years
Sex
All
01

Study summary

Conservatism is considered the main concern in any treatment plan, the feather edge preparation design of laminate veneers have been introduced yet clinical studies are lacking to evaluate their clinical performance.The aim of this study is to evaluate the effect of the two different preparation designs on the functional and esthetic outcome of laminate veneers in terms of marginal adaptation, retention, fracture, marginal discoloration and patient satisfaction

02

Conditions studied

  • Dental Disorders Hard Tissues of Teeth
  • Tooth Discoloration

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Keywords

  • Laminates
  • Vertical preparation
  • veneers
03

In context

Tooth Discoloration

102 studies on the registry are indexed under Tooth Discoloration; 19 are open to participants now.

This study's planned enrollment of 10 is below the median of 48 across 95 interventional studies indexed under Tooth Discoloration.

Browse Tooth Discoloration studies →

Lead sponsor

Cairo University is the lead sponsor of 4,780 studies on the registry; 1,427 are open to participants now.

Of its 36 completed or terminated interventional studies of FDA-regulated products, 5 (14%) have results posted.

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

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Who can participate

Ages eligible
18 Years to 60 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

  • From 18-60 years old, and able to read and sign the informed consent document.
  • Patients with teeth problems indicated for laminate veneers.
  • Physically and psychologically able to tolerate conventional restorative procedures.
  • Have no active periodontal or pulpal diseases.
  • Maintenance of good oral hygiene .
  • Willing to return for follow-up examinations and evaluation.

Exclusion criteria

Exclusion Criteria:

  • Patients in the growth stage with partially erupted teeth.
  • Patients with para-functional habits.
  • Cases that need modification in the incisal edge.
  • Patients with poor oral hygiene and motivation .
  • Psychiatric problems or unrealistic expectations.
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Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Outcomes assessor)
Enrollment
10 participants (estimated)

Study arms

  • Other
    Conventional preparation design (Chamfer finish line with Butt joint incisal preparation design)

    conventional treatment

    Procedure: Laminate veneers preparation

  • Experimental
    New preparation design (Feather edge finish line with feather edge incisal preparation design)

    New preparation design

    Procedure: Laminate veneers preparation

Interventions

  • ProcedureLaminate veneers preparation

    facial laminate veneers teeth preparation

06

What researchers measure

Primary outcomes

  1. marginal gap distance

    the gap between the laminate and the prepared tooth is measured before cementation using silicon replica and digital microscope

    Time frame: at time of laminate cementation

07

Study locations

1 site
  • Faculty of Dentistry - Cairo University
    Cairo, Egypt
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jun 18, 2021, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04840524
Lead sponsor
Cairo University
Responsible party
Baher Ahmed Moustafa Ali (Assosiate lecturer of Fixed Prosthodontics, Cairo University) — Principal investigator
First posted
Apr 12, 2021
Start date
Jan 26, 2021
Primary completion
Jan 2023 (estimated)
Completion
Jul 2023 (estimated)
Last update
Jun 18, 2021

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is status unknown, as verified in Jun 2021. You cannot join it, but the record below documents what was studied.

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