Gingival Response and Marginal Adaptation of Zirconia Crowns With Two Subgingival Margin Designs
1 other identifier
interventional
30
0 countries
N/A
Brief Summary
The aim of the study is to evaluate the effect of feather edge finish line and deep chamfer finish line on gingival position, bleeding on probing and marginal adaptation.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at below P25 for not_applicable
Started Nov 2021
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
January 24, 2021
CompletedFirst Posted
Study publicly available on registry
January 28, 2021
CompletedStudy Start
First participant enrolled
November 1, 2021
CompletedPrimary Completion
Last participant's last visit for primary outcome
November 1, 2022
CompletedStudy Completion
Last participant's last visit for all outcomes
December 1, 2022
CompletedJuly 28, 2021
July 1, 2021
1 year
January 24, 2021
July 27, 2021
Conditions
Outcome Measures
Primary Outcomes (1)
Position of the margin of the restoration in relation to the gingival margin position
Scoring proposed by Paniz et al classified into either subgingival (not visible), equigingival (slightly visible) and supragingival (visible)
1 year
Secondary Outcomes (1)
Bleeding on probing
1 year
Other Outcomes (1)
Marginal adaptation
1 year
Study Arms (2)
Tested finish line preparation
OTHERFeather edge finish line preparation (Intervention)
Comparator finish line preparation
ACTIVE COMPARATORDeep chamfer finish line preparation (Comparator)
Interventions
Tooth preparation with feather edge finish line will be done to posterior teeth to receive all ceramic full coverage zirconia crowns.
Tooth preparation with deep chamfer finish line will be done to posterior teeth to receive all ceramic full coverage zirconia crowns.
Eligibility Criteria
You may qualify if:
- Patients 18 years to 50 years old
- Dentate patients planned for a single full coverage restoration in the posterior area.
- Patients with no active periodontal disease.
- \>2mm of keratinized tissue
You may not qualify if:
- Smoking (\>10 cigarettes a day)
- Substance abuse history
- Patients with poor oral hygiene and high caries index
- Patients suffering from abnormal occlusal habits for example clenching or bruxism
- Local or systemic disease (endocrine, renal, hematologic, hepatic, immunosuppressive)
- Current steroid/chemotherapy
- Head and neck irradiation
- Pregnancy
- Inability or unwillingness to return for follow up visits.
Contact the study team to confirm eligibility.
Sponsors & Collaborators
- Cairo Universitylead
Related Publications (1)
El-Khayat H, Anwar EM, Nabil O, Aboushahba M. Gingival Recession and Marginal Adaptation of Zirconia Crowns with Two Subgingival Margin Designs: A Randomized Clinical Trial. J Contemp Dent Pract. 2025 Aug 1;26(8):767-775. doi: 10.5005/jp-journals-10024-3932.
PMID: 41145363DERIVED
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Study Design
- Study Type
- interventional
- Phase
- not applicable
- Allocation
- RANDOMIZED
- Masking
- DOUBLE
- Who Masked
- PARTICIPANT, OUTCOMES ASSESSOR
- Purpose
- TREATMENT
- Intervention Model
- PARALLEL
- Sponsor Type
- OTHER
- Responsible Party
- PRINCIPAL INVESTIGATOR
- PI Title
- Principal Investigator
Study Record Dates
First Submitted
January 24, 2021
First Posted
January 28, 2021
Study Start
November 1, 2021
Primary Completion
November 1, 2022
Study Completion
December 1, 2022
Last Updated
July 28, 2021
Record last verified: 2021-07
Data Sharing
- IPD Sharing
- Will share
- Shared Documents
- STUDY PROTOCOL, CSR