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Not yet recruiting NCT07139613

We Will Assess Zirconia Crown Restoring Endodontically Treated Posterior Teeth With Two Finish Line Designs and Two Occlusal Reduction Schemes

No phase Interventional Zirconia Crowns

For patients and families

In plain language

An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.

What is being studied
The protocol lists: Control group(PS)Planer occlusal scheme with rounded shoulder finish line, First intervention group(FF) flat occlusal scheme with feather edge finish line, Second intervention group(FS) flat occlusal with rounded shoulder finish line design.
Who it may be relevant to
Registry conditions: Zirconia Crowns. Basic parameters: 18 years — 65 years · All.
What needs checking
Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
Where it takes place
Pakistan
Next step
Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →

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Official title

Evaluation of Zirconia Crown Restoring Endodontically Treated Posterior Teeth With Two Finish Line Designs and Two Occlusal Reduction Schemes(a Randomized Clinical Trial)

Overview

Endodontically treated posterior teeth will be restored with zirconia crowns with two finish line designs(feather edge and rounded shoulder) and two occlusal reduction schemes(flat and planer).The crowns were designed with exocad software program .After cementation clinical performance in terms of marginal adaptation ,marginal discoloration, fracture and secondary caries was evaluated at 3 subsequent follow-up visits every 3months for 1 year.

Detailed description

Endodontically treated posterior teeth require full coverage coronal restoration, as they are more prone to fracture as compared to vital teeth .Over past two decades restorative dentistry there has been a paradigm shift in restorative dentistry towards monolithic zirconia crowns because of its superior esthetics ,excellent biocompatibility ,and continually improving biomechanical properties. For the long term clinical success of zirconia crowns tooth preparation designs particularly finish line designs and occlusal reduction play significant role. Different finish lines designs such as chamfer and shoulder, play a role in marginal fit of restoration .While assessing zirconia crowns of two finish line designs and two occlusal reduction schemes the participants were divided into three groups based on preparation design: the control group PS (planer occlusal and rounded shoulder) ; first interventional group (flat occlusal and feather); Second interventional group (flat occlusal and rounded shoulder) .To minimize bias the outcome assessor ,participants and statistician were blinded and only investigator will not blinded. After cementation on subsequent follow-up of one year with every three months interval United states Public Health Services Criteria (USPHS) is used for marginal adaptation ,discoloration, fracture and secondary caries, and gingival index score system is used for gingival response.

Second interventional group FS (Flat occlusal + rounded shoulder)

Interventions

  • Other Control group(PS)Planer occlusal scheme with rounded shoulder finish line
    Control group (PS) will have planer occlusal scheme with rounded shoulder finish line.
  • Procedure First intervention group(FF) flat occlusal scheme with feather edge finish line
    First intervention group we will have flat occlusal scheme with feather edge finish line
  • Procedure Second intervention group(FS) flat occlusal with rounded shoulder finish line design
    Second intervention will have flat occlusal scheme with rounded shoulder finish line design

Primary outcome measures

  • Gingival index score system and United States Public Health Services Criteria(USPHS) [Time frame: One year]

Eligibility criteria

Inclusion criteria

  • patients from both genders.
  • age range 18-65 years.
  • patients with endodontically treated posterior teeth.

Exclusion criteria

  • vital teeth
  • anterior teeth.
  • edentulous patient.
  • patient with history of significant systemic diseases.

Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.

Healthy volunteers: Yes

Study design

Allocation
Randomized
Model
Parallel assignment
Masking
Double blind
Primary purpose
Other

Study locations

Pakistan · 2 centers
  • Armed Forces Institute of Dentistry — Rawalpindi
  • Armed Forces Institute of Dentistry — Rawalpindi

Identifiers

NCT: NCT07139613 · zirconia crowns

Primary sources (government registries)

View this study on ClinicalTrials.gov ↗