Tooth Color
Conditions
Keywords
Tooth extrinsic stain, Tooth color, Dental prophylaxis, Visual shade guide, Dental spectrophotometer
Brief summary
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.
Interventions
PROCEDUREDental prophylaxis
Professional dental prophylaxis including dental scaling and dental polishing with prophylactic paste
PROCEDURETooth color assessment by the participant
Tooth color assessment using the VITA Classical shade guide. Assessment will be done with normal light conditions and with a light correcting device
PROCEDURETooth color assessment by the investigator
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
PROCEDURETooth color assessment with SpectroShade
Tooth color assessment using SpectroShade (dental spectrophotometer). Color will be registered in VITA Classical and VITA Toothguide 3D Master and CIELab parameters
Sponsors
University of Lisbon
Grupo de Investigação em Bioquímica e Biologia Oral
Study design
Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
DIAGNOSTIC
Masking
NONE
Masking description
Neither the patient, the investigator that made the color acquisition or the spectrophotometer had knowledge of tooth color assessed by the other person/method
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes
Inclusion criteria
* Capability to sign the informed consent * Presence of upper teeth canines and central incisors, free of tooth decay, dental fillings, endodontic treatment or fixed rehabilitation * Tooth color at least A3 in one of the included teeth * Teeth should be possible to be subject to tooth color assessment with the predefined methods (color within the visual shade guides range) * Absence of fixed orthodontic appliances or severe tooth structure anomalies
Exclusion criteria
* Pregnant patients * Patients subjected to professional dental prophylaxis in less than 4 months
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Tooth color change determined before and after professional dental prophylaxis, assessed with visual shade guide (VITA Classical) | 1 week (measurements before and 1 week after dental prophylaxis) | 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. |
| Tooth color change measured before and after professional dental prophylaxis, assessed with visual shade guide (VITA Toothguide 3D-Master) | 1 week (measurements before and 1 week after dental prophylaxis) | 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. |
| Tooth color change in CIELab system measured before and after professional dental prophylaxis | 1 week (measurements before and 1 week after 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. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Agreement between operators in tooth color assessment with visual shade guides | Sequencial; repeated before and 1 week after intervention | Comparison of tooth colors determined by the participant, investigator and spectrophotometer. |
| Influence of light conditions in tooth color assessment - change between determination with and without a light correcting device | Sequencial; repeated before and 1 week after intervention | 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) |
Countries
Portugal
Contacts
Primary ContactDaniela C Corado, DDS
Backup ContactDuarte S Marques, PhD, DDS
Outcome results
None listed