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| Name | Class |
|---|---|
| University of Lisbon | OTHER |
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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.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Dental prophylaxis | Experimental | Visit 1: tooth color assessment (by patient, dentist and spectrophotometer) and professional dental prophylaxis Visit 2: tooth color assessment (by patient, dentist and spectrophotometer) |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Dental prophylaxis | Procedure | Professional dental prophylaxis including dental scaling and dental polishing with prophylactic paste |
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| Measure | Description | Time Frame |
|---|---|---|
| Tooth 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. | 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. | 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. | 1 week (measurements before and 1 week after dental prophylaxis) |
| Measure | Description | Time Frame |
|---|---|---|
| Agreement between operators in tooth color assessment with visual shade guides | Comparison of tooth colors determined by the participant, investigator and spectrophotometer. | 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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Inclusion Criteria:
Exclusion Criteria:
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| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Daniela C Corado, DDS | Contact | (+351) 912388159 | daniela-corado@campus.ul.pt | |
| Duarte S Marques, PhD, DDS | Contact | (+351) 966486375 | duartemd@yahoo.co.uk |
| Name | Affiliation | Role |
|---|---|---|
| Duarte S Marques, PhD, DDS | Grupo de Investigação em Bioquímica e Biologia Oral | Study Director |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Faculdade de Medicina Dentária, Universidade de Lisboa | Recruiting | Lisbon | 1600-277 | Portugal |
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| ID | Term |
|---|---|
| D003777 | Dental Prophylaxis |
| ID | Term |
|---|---|
| D010517 | Periodontics |
| D003813 | Dentistry |
| D011313 | Preventive Dentistry |
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Neither the patient, the investigator that made the color acquisition or the spectrophotometer had knowledge of tooth color assessed by the other person/method
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| Tooth color assessment by the participant | Procedure | Tooth color assessment using the VITA Classical shade guide. Assessment will be done with normal light conditions and with a light correcting device |
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| Tooth color assessment by the investigator | Procedure | 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 |
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| Tooth color assessment with SpectroShade | Procedure | Tooth color assessment using SpectroShade (dental spectrophotometer). Color will be registered in VITA Classical and VITA Toothguide 3D Master and CIELab parameters |
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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) |
| Sequencial; repeated before and 1 week after intervention |