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NCT Number: NCT06067945

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

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

Recruiting

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Key information

Sex eligibility

All sexes

Study type

Observational

Primary location

Altamash Institute Of Dental Medicine

Karachi, Sindh, 5444, Pakistan

Location status: Recruiting

Location contact

Tooba Shabbir, FCPS

CONTACT

[email protected]

03442105654

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Phantom teeth
  • Maxillary molars
  • Metal crowns with conventional lost-wax technique for crown fabrication

Exclusion criteria

  • Over prepared or underprepared crowns
  • Defective metal crowns
  • Ruptured silicone films upon removal
  • Defective die stone casts

Treatment and study plan

microleakage

Other

prevention of microleakage and secondary carries

Primary outcomes

  1. marginal fit

    Time frame: six months

    The margins of fixed restorations refers to the junction between the prepared tooth structure and the crown restoration

Secondary outcomes

  1. 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

Study contacts

Contact information is provided by the study sponsor or research team.

Tooba Shabbir, FCPS

CONTACT

[email protected]

03442105654

Sponsors and collaborators

Lead sponsor

Altamash Institute of Dental Medicine

Other

Registry information

Important dates

Study start
2025
Primary completion
2025
Study completion
2025
First posted
Oct 5, 2023
Registry last updated
Feb 26, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.