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Comparison of Color Measurements of Postgraduate Dental Students Using Different Color Determination Methods

Comparison of Color Measurements of Postgraduate Dental Students in the Maxillary Anterior Region Using Different Color Determination Methods

Status
Enrolling by invitation
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT06791694
Acronym
Color
Enrollment
32
Registered
2025-01-24
Start date
2025-01-27
Completion date
2025-03-01
Last updated
2025-01-30

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Tooth Discoloration

Keywords

color, tooth, button

Brief summary

This study evaluates the accuracy of tooth color identification skills in the anterior region using a new technique, the button technique, in comparison with other methods.

Detailed description

The human eye is effective in detecting subtle differences in tooth color. However, variations in the shade, translucency, opacity, and characterization of a tooth may not be accurately identified. Visual color matching is subject to physiological variables that may lead to inconsistencies, such as age, gender, experience, the type of scale used, varying degrees of light exposure, eye fatigue, and color vision deficiency. Studies comparing visual and instrumental methods have demonstrated that spectrophotometers yield better results compared to visual color scales. Therefore, it is expected that color measurement devices improve the accuracy of tooth color determination, thereby enhancing the interpretation and aesthetic execution of restorations. In recent years, the button technique has been described for shade selection in direct aesthetic restorations in the anterior region. In this technique, small composite samples in the form of dots are polymerized on the tooth surface using a curing light. Digital photographs are then taken, and appropriate enamel and dentin shades are selected on a computer using polarized and black-and-white images. Very few clinical studies have investigated the use of digital color images obtained through intraoral digital scanners for shade selection, comparing them with other existing methods. The aim of this study is to evaluate the accuracy of shade determination skills in the anterior region by comparing a new technique, the button technique, with other methods and to recommend the most suitable method for shade selection

Interventions

Graduate students; healthy maxillary central teeth and color measurements will be performed with 4 different methods in at least 32 patients aged between 18-40 years. Firstly, students will be asked to make color measurements using the traditional method with two different color scales (Vita classical and Vita 3D master). As the third method; the enamel color of the teeth will be determined on digital photographs using the buton technique. Finally, tooth color will be measured on the buccal surface of the central teeth using a spectrophotometer.

Sponsors

Hacettepe University
Lead SponsorOTHER

Study design

Observational model
OTHER
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
18 Years to 40 Years
Healthy volunteers
Yes

Inclusion criteria

* Being healthy individuals, * Not having any systemic diseases, * Being young individuals (18-40 age range) * Vital, decay-free and healthy upper central teeth, * Absence of caries-free hard tissue abrasions, any restoration, fracture, crack, intrinsic or extrinsic discoloration in the upper central teeth * Lack of removable prosthesis feet for central teeth

Exclusion criteria

* Tetracycline, fluorosis staining of upper central teeth * Patients with dentin exposure or loss of bine in the upper central teeth for any reason * Pregnant and lactating patients will not be included.

Design outcomes

Primary

MeasureTime frameDescription
To have compared the inter-observer reliability of 4 different methods used in tooth color selection1 monthTo have compared the inter-observer reliability of 4 different methods used in tooth color selection

Countries

Turkey (Türkiye)

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026