Completed

NCT Number: NCT06827847

Comparative Evaluation of Shade Matching Using a Digital Spectrophotometer in Monochromatic Versus Polychromatic Layering Techniques for Restoring Fractured Incisal Angles of Maxillary Incisors - Invivo Study

The color and appearance of a tooth is complex phenomenon which is related to many factors such as color stability, The Blending Effect, color Induction, color assimilation effect of resin composite materials which are all fall under the Term Chameleon Effect Which Enables Resin composite material to obtain a shade that bears a resemblance to the color of the surrounding tooth structure. The usage of different opacities and shades to match the tooth structure is very time consuming for both patient and clinician. However, any clinical effectiveness of any dental restorative procedures such as composite replacement is dependent on their physical, chemical and mechanical features which are highly proportional with oral environment and resin material properties.

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Key information

Conditions

Class IV Dental Caries

Age range

16 year–35 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Badr University in Cairo (BUC)

Cairo, Egypt

About this study

Resin Composite Material allow light scattering between Enamel and Dentin Which aid in Internal diffusion So That Resin Composite Material blend with the surroundings. The color alteration Also is directly proportional with light absorption to make it undetectable when blended with tooth structure A Significant disadvantage of resin composite restorations is highly susceptibility to staining and discoloration by the time and aging process in the oral environment. Color instability is one of the main reasons for replacing restorations, particularly in anterior teeth. There are several factors that affect the color stability of resin composite including intrinsic factors, namely the chemical make-up of the materials. Moreover, other extrinsic factors including smoking and poor oral hygiene, as well as the absorption of dyes from consuming foods and beverages in the oral cavity influence the color stability of resin composite restoration.

The color of any observed restoration is dedicated by light scattering between resin composite material and other substrates such as Tooth structure beneath restoration and other hard dental tissues. Natural teeth and resin composite material should share Three basic parameters Chroma , Hue and Value . Other Parameters effect on observation such as opacity, translucency, glossy surface should be put in consideration During resin based composite manufacturing.

This investigation sought to determine the effectiveness of three distinct approaches to shade matching when restoring class iv in dental maxillary incisors using universal Universal shade dental composite technique, traditional polychromatic layering dental composite technique, and contemporary monochromatic single shade dental composite technique.

Who can participate

Healthy volunteers accepted: No

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

Inclusion criteria

fractured incisal angles in vital maxillary permanent incisors
aged 16 to 35
exhibits good oral hygiene

Exclusion criteria

individuals with nonvital or endodontically treated teeth
active periodontal disease
significant medical complications
malocclusion
parafunctional habits

Treatment and study plan

Traditional polychromatic layering dental composite technique

Procedure

patient received composite restoration done by layering technique

Contemporary monochromatic single shade dental composite technique

Procedure

patient received composite restoration done by single shade composite

Primary outcomes

Shade matching

Time frame: 1 day

Shade selection will be evaluated using Vita Easyshade which is a hand-held digital spectro-photometer that consists of a hand piece connected to a base unit by a monocoil fiber optic cable assembly with a probe tip of about 5 mm in diameter, before and after putting esthetic restorations, then different resin composite shading systems will be used in this study

Sponsors and collaborators

Lead sponsor

Badr University

Other

Collaborators

Cairo University

Registry information

Official study title

Comparative Evaluation of Shade Matching Using a Digital Spectrophotometer in Monochromatic Versus Polychromatic Layering Techniques for Restoring Fractured Incisal Angles of Maxillary Incisors: a Randomized Controlled Trial

Acronym: Shade Matching

Important dates

Study start: 2025
Primary completion: 2025
Study completion: 2025
First posted: Feb 14, 2025
Registry last updated: Feb 14, 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.

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Evaluate the Shade Matching of Polychromatic Versus Monochromatic Composite Layering Techniques in Fractured Class IV Maxillary Central Incisors Using Universal , Layering & One Shade Composite In-vivo on Patients

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