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OpenTrials
Completed

NCT Number: NCT02884856

Color Perception in Dentistry (CPD)

Visual shade matching (VSM) is the most common procedure to select an adequate shade in dentistry. This clinical procedure requires the use of a shade guide, being Vita Classical (VC) the most popular among the available guides. VSM is a subjective and inconsistent process with many observer related variables (e.g. color deficiency, experience, gender and eye fatigue) that can influence on the final color appearance. The gender influence on the accuracy of VSM is controversial.

The purpose of this study is to evaluate the VSM performed by female (F) and male (M) students, using VC shade guide, testing the null hypothesis that VSM is not influenced by gender.

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Key information

Conditions

Gender Behavior Coitus Sexual Behavior

Age range

20 year–35 year

Sex eligibility

All sexes

Study type

Observational

Primary location

Universidade de Passo Fundo

Passo Fundo, Rio Grande do Sul, 99052-900, Brazil

About this study

  • Female and male observers will be analyzed.
  • Human upper central incisors (UCI) will be shade matched to shade tabs from Vita Classical (VC) shade guide.
  • The spectral reflectances from the four UCI and from the 16 VC shade tabs will be measured using a spectroradiometer (SP).
  • Measurements will be performed over a gray background, inside a viewing booth and under D65 illuminant (diffuse/0º geometry).
  • CIELAB coordinates (L*, a* and b*) will be calculated according to CIE D65 illuminant and CIE 2º Standard Observer.
  • Two color difference metrics (CIELAB and CIEDE2000(2:1:1)) will be used to find the best option for each UCI, using VC shade guide.
  • Data will be analyzed using descriptive statistics and McNemar test (α=0.05).

Who can participate

Healthy volunteers accepted: Yes

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

Inclusion criteria

  • Dental students (DS) from University of Passo Fundo.
  • DS with some knowledge and clinical experience with shade matching.
  • DS from 20 to 35 years old.

Exclusion criteria

  • DS with abnormal color vision.

Treatment and study plan

Primary outcomes

  1. Gender effect on visual shade matching

    Time frame: The study last for 2 years

Sponsors and collaborators

Lead sponsor

Universidade de Passo Fundo

Other

Collaborators

  • Conselho Nacional de Desenvolvimento Científico e Tecnológico
  • Coordenação de Aperfeiçoamento de Pessoal de Nível Superior.
  • Ministerio de Economía y Competitividad, Spain
  • Universidad de Granada

Registry information

Official study title

Influence of Gender on Visual Shade Matching in Dentistry

Acronym: CPD

Important dates

Study start
2014
Primary completion
2014
Study completion
2016
First posted
Aug 31, 2016
Registry last updated
Aug 31, 2016

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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