The aim of this study is to evaluate the influence of several factors (light, extrinsic stain removal and operator's experience) in tooth color assessment. Tooth color will be assessed by two different operators with visual shade guides under standardized light conditions and using a light correcting device (Smile Lite) or with a dental spectrophotometer in human subjects. Color measurement will be made before and 1 week after dental prophylaxis.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
DIAGNOSTIC
Masking
NONE
Enrollment
50
Professional dental prophylaxis including dental scaling and dental polishing with prophylactic paste
Tooth color assessment using the VITA Classical shade guide. Assessment will be done with normal light conditions and with a light correcting device
Tooth color assessment using the VITA Classical shade guide and the VITA Toothguide 3D Master. Assessment will be done with normal light conditions and with a light correcting device
Faculdade de Medicina Dentária, Universidade de Lisboa
Lisbon, Portugal
RECRUITINGTooth color change determined before and after professional dental prophylaxis, assessed with visual shade guide (VITA Classical)
Tooth color will be determined prior to dental prophylaxis by the participant, investigator and spectrophotometer, using visual shade guide VITA Classical. 1 week after the intervention, the tooth color will be determined once again with the same protocol.
Time frame: 1 week (measurements before and 1 week after dental prophylaxis)
Tooth color change measured before and after professional dental prophylaxis, assessed with visual shade guide (VITA Toothguide 3D-Master)
Tooth color will be determined prior to dental prophylaxis by the investigator and dental spectrophotometer, using visual shade guide VITA Toothguide 3D-Master. 1 week after the intervention, the tooth color will be determined once again with the same protocol.
Time frame: 1 week (measurements before and 1 week after dental prophylaxis)
Tooth color change in CIELab system measured before and after professional dental prophylaxis
Tooth color in CIELab system will be determined by the conversion of VITA Classical shade guides in CIELab parameters assessed by the participant and investigator and by the spectroshade prior to professional dental prophylaxis. 1 week after the procedure tooth color will be determined once again with the same protocol.
Time frame: 1 week (measurements before and 1 week after dental prophylaxis)
Agreement between operators in tooth color assessment with visual shade guides
Comparison of tooth colors determined by the participant, investigator and spectrophotometer.
Time frame: Sequencial; repeated before and 1 week after intervention
Influence of light conditions in tooth color assessment - change between determination with and without a light correcting device
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Tooth color assessment using SpectroShade (dental spectrophotometer). Color will be registered in VITA Classical and VITA Toothguide 3D Master and CIELab parameters
Tooth color determined by the participant and investigator with visual shade guides with two different light conditions: environmental light and assessment with a light correcting device (Smile Lite)
Time frame: Sequencial; repeated before and 1 week after intervention