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

Recruiting

• Conditions: Evaluation of Marginal and Internal Fit of Metal Crowns
• Interventions: Other: microleakage

• Registration Number: NCT06067945
• Lead Sponsor: Altamash Institute of Dental Medicine

Brief Summary

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

Detailed Description

Not available

Study Timeline

• Study First Submitted: 2023-09-25
• Study First Submitted QC: 2023-10-03
• Study First Posted: 2023-10-05
• Status Verified: 2025-02
• Study Start: 2025-02-24
• Last Update Submitted: 2025-02-24
• Last Update Posted: 2025-02-26
• Primary Completion: 2025-06-20
• Study Completion: 2025-06-20

Recruitment & Eligibility

• Status: RECRUITING
• Sex: All
• Target Recruitment: 28

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 & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Arm && Interventions

Group	Intervention	Description
NP is given to the non polished group which is group 2	microleakage	Out of two groups, group 2 is a test group to which rough preparations are assigned

Primary Outcome Measures

Name	Time	Method
marginal fit	six months	The margins of fixed restorations refers to the junction between the prepared tooth structure and the crown restoration

Secondary Outcome Measures

Name	Time	Method
Internal fit	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

Trial Locations

Locations (1)

Altamash Institute Of Dental Medicine; 🇵🇰 Karachi, Sindh, Pakistan