Color Perception in Dentistry (CPD) (CPD)

August 25, 2016 updated by: Alvaro Della Bona, Universidade de Passo Fundo

Influence of Gender on Visual Shade Matching in Dentistry

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.

Study Overview

Status

Completed

Conditions

Detailed Description

  • 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).

Study Type

Observational

Enrollment (Actual)

100

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Brazil
    • Rio Grande do Sul
      • Passo Fundo, Rio Grande do Sul, Brazil, 99052-900
        • Universidade de Passo Fundo

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

20 years to 35 years (ADULT)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

Dental students from University of Passo Fundo (Brazil) and with some knowledge and clinical experience with shade matching will be included in the study.

Description

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.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort
Females observers (F)
those with female gender characteristics
Male observers (M)
those with male gender characteristics

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Gender effect on visual shade matching
Time Frame: The study last for 2 years
The study last for 2 years

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Universidade de Passo Fundo

Collaborators

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

Investigators

  • Study Director: Alvaro Della Bona, Ph.D., Universidade de Passo Fundo
  • Principal Investigator: Oscar E. Pecho, Ph.D., Universidade de Passo Fundo

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

August 1, 2014

Primary Completion (ACTUAL)

December 1, 2014

Study Completion (ACTUAL)

June 1, 2016

Study Registration Dates

First Submitted

August 22, 2016

First Submitted That Met QC Criteria

August 25, 2016

First Posted (ESTIMATE)

August 31, 2016

Study Record Updates

Last Update Posted (ESTIMATE)

August 31, 2016

Last Update Submitted That Met QC Criteria

August 25, 2016

Last Verified

August 1, 2016

More Information

Terms related to this study

Keywords

Other Study ID Numbers

  • 34553314.0.0000.5342

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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