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Ni-Ti Shape-Memory Versus Conventional Sectional Matrices Systems in Class II Composite Restorations: A Randomized Clinical Trial
Sponsor: Cairo University
Summary
The aim of this randomized controlled clinical trial is to evaluate and compare the clinical performance of a Ni-Ti shape-memory sectional matrix system versus a conventional sectional matrix system in Class II direct composite restorations. The study will specifically assess the following clinical parameters: 1. Proximal contact tightness 2. Proximal contour quality 3. Fracture and retention of the restoration 4. Marginal adaptation These clinical parameters will be evaluated immediately after restoration placement and after a 1-year follow-up using standardized clinical assessment methods, including the FDI criteria, dental floss evaluation, and radiographic assessment, where applicable. Fracture and retention, and marginal adaptation will be assessed according to predefined scoring criteria.
Official title: Clinical Performance of Ni-Ti Shape-Memory Versus Conventional Sectional Matrices Systems in Class II Composite Restorations: A Randomized Clinical Trial
Key Details
Gender
All
Age Range
18 Years - Any
Study Type
INTERVENTIONAL
Enrollment
50
Start Date
2026-11-01
Completion Date
2028-01-01
Last Updated
2026-10-07
Healthy Volunteers
No
Conditions
Interventions
Ni-Ti Shape-Memory Sectional Matrix System
Intervention 1 - Ni-Ti Shape-Memory Sectional Matrix System Quickmat-Flex ultra-thin titanium sectional matrix band combined with a Ni-Ti shape-memory separation ring for restoration of Class II posterior composite cavities. Intervention 2 - Conventional Sectional Matrix System TOR VM stainless-steel sectional matrix system combined with a conventional separation ring for restoration of Class II posterior composite cavities.
Locations (1)
Faculty of Dentistry Cairo university
Cairo, Cairo Governorate, Egypt