Comparison of Marginal Fit and Internal Adaptation in All-Metal Crowns: an in Vitro Experimental Trial

February 24, 2025 updated by: Tooba Shabbir, Altamash Institute of Dental Medicine
The goal of this in vitro study is to compare the marginal fit and internal adaptation of all-metal crowns in polished crown preparations and non-polished crown preparations The main question it aims to answer is: are the non polished tooth preparations comparable to polished preparations? We will compare polish and non polish groups and see their effects on marginal fit and internal adaptation of all metal crown

Study Overview

Status

Recruiting

Conditions

Intervention / Treatment

Study Type

Observational

Enrollment (Estimated)

28

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Locations

  • Pakistan
    • Sindh
      • Karachi, Sindh, Pakistan, 5444
        • Recruiting
        • Altamash institute of dental medicine
        • Contact:

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Child
  • Adult
  • Older Adult

Accepts Healthy Volunteers

Yes

Sampling Method

Non-Probability Sample

Study Population

The phantom teeth (Nissin dental products Inc. Kyoto 601-8469,Japan) will be fixed in the model plaster block type II (Super national, Karachi Pakistan) with full crown and only 2mm of root portion

Description

Inclusion Criteria:

  1. Phantom teeth
  2. Maxillary molars
  3. Metal crowns with conventional lost-wax technique for crown fabrication

Exclusion Criteria:

  1. Over prepared or underprepared crowns
  2. Defective metal crowns
  3. Ruptured silicone films upon removal
  4. Defective die stone casts

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort
Intervention / Treatment
NP is given to the non polished group which is group 2
Out of two groups, group 2 is a test group to which rough preparations are assigned
Other: microleakage
prevention of microleakage and secondary carries

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
marginal fit
Time Frame: six months
The margins of fixed restorations refers to the junction between the prepared tooth structure and the crown restoration
six months

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Internal fit
Time Frame: six months
Internal fit is defined as the perpendicular distance between the framework and abutment teeth and the misfit is measured from occlusal/incisal and axial surfaces to the coping
six months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Altamash Institute of Dental Medicine

Investigators

  • Study Director: Naseer Ahmad, Ph.D, Altamash institute of dental medicine

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

February 24, 2025

Primary Completion (Estimated)

June 20, 2025

Study Completion (Estimated)

June 20, 2025

Study Registration Dates

First Submitted

September 25, 2023

First Submitted That Met QC Criteria

October 3, 2023

First Posted (Actual)

October 5, 2023

Study Record Updates

Last Update Posted (Actual)

March 25, 2025

Last Update Submitted That Met QC Criteria

February 24, 2025

Last Verified

February 1, 2025

More Information

Terms related to this study

Other Study ID Numbers

  • Tshabbir92 Altamash

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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