Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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COMPLETED
100 participants
OBSERVATIONAL
2014-08-31
2016-06-30
Brief Summary
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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.
Detailed Description
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* 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).
Conditions
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Keywords
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Study Design
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COHORT
CROSS_SECTIONAL
Study Groups
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Females observers (F)
those with female gender characteristics
No interventions assigned to this group
Male observers (M)
those with male gender characteristics
No interventions assigned to this group
Eligibility Criteria
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Inclusion Criteria
* DS with some knowledge and clinical experience with shade matching.
* DS from 20 to 35 years old.
Exclusion Criteria
20 Years
35 Years
ALL
Yes
Sponsors
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Conselho Nacional de Desenvolvimento Científico e Tecnológico
OTHER_GOV
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior.
OTHER_GOV
Ministerio de Economía y Competitividad, Spain
OTHER_GOV
Universidad de Granada
OTHER
Universidade de Passo Fundo
OTHER
Responsible Party
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Alvaro Della Bona
Senior Professor and Researcher
Principal Investigators
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Alvaro Della Bona, Ph.D.
Role: STUDY_DIRECTOR
Universidade de Passo Fundo
Oscar E. Pecho, Ph.D.
Role: PRINCIPAL_INVESTIGATOR
Universidade de Passo Fundo
Locations
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Universidade de Passo Fundo
Passo Fundo, Rio Grande do Sul, Brazil
Countries
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References
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Abramov I, Gordon J, Feldman O, Chavarga A. Sex and vision II: color appearance of monochromatic lights. Biol Sex Differ. 2012 Sep 4;3(1):21. doi: 10.1186/2042-6410-3-21.
Capa N, Malkondu O, Kazazoglu E, Calikkocaoglu S. Evaluating factors that affect the shade-matching ability of dentists, dental staff members and laypeople. J Am Dent Assoc. 2010 Jan;141(1):71-6. doi: 10.14219/jada.archive.2010.0023.
Deeb SS. The molecular basis of variation in human color vision. Clin Genet. 2005 May;67(5):369-77. doi: 10.1111/j.1399-0004.2004.00343.x.
Della Bona A, Barrett AA, Rosa V, Pinzetta C. Visual and instrumental agreement in dental shade selection: three distinct observer populations and shade matching protocols. Dent Mater. 2009 Feb;25(2):276-81. doi: 10.1016/j.dental.2008.09.006. Epub 2008 Nov 18.
Donahue JL, Goodkind RJ, Schwabacher WB, Aeppli DP. Shade color discrimination by men and women. J Prosthet Dent. 1991 May;65(5):699-703. doi: 10.1016/0022-3913(91)90209-f.
Haddad HJ, Jakstat HA, Arnetzl G, Borbely J, Vichi A, Dumfahrt H, Renault P, Corcodel N, Pohlen B, Marada G, de Parga JA, Reshad M, Klinke TU, Hannak WB, Paravina RD. Does gender and experience influence shade matching quality? J Dent. 2009;37 Suppl 1:e40-4. doi: 10.1016/j.jdent.2009.05.012. Epub 2009 May 22.
Hugo B, Witzel T, Klaiber B. Comparison of in vivo visual and computer-aided tooth shade determination. Clin Oral Investig. 2005 Dec;9(4):244-50. doi: 10.1007/s00784-005-0014-3. Epub 2005 Oct 8.
Milagres V, Teixeira ML, Miranda ME, Osorio Silva CH, Ribeiro Pinto JR. Effect of gender, experience, and value on color perception. Oper Dent. 2012 May-Jun;37(3):228-33. doi: 10.2341/10-057-C. Epub 2012 Feb 15.
Paul S, Peter A, Pietrobon N, Hammerle CH. Visual and spectrophotometric shade analysis of human teeth. J Dent Res. 2002 Aug;81(8):578-82. doi: 10.1177/154405910208100815.
Pecho OE, Ghinea R, Alessandretti R, Perez MM, Della Bona A. Visual and instrumental shade matching using CIELAB and CIEDE2000 color difference formulas. Dent Mater. 2016 Jan;32(1):82-92. doi: 10.1016/j.dental.2015.10.015. Epub 2015 Nov 28.
Other Identifiers
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34553314.0.0000.5342
Identifier Type: -
Identifier Source: org_study_id