The aim of this in vivo study was to evaluate the colourimetric changes between sound enamel and post orthodontic WSLs and to correlate these findings with human eye colour perception threshold using spectrophotometry. Experimental approach Seventy-six permanent teeth with post orthodontic WSLs in 12–16 years old patients were evaluated in this in vivo study at “Sapienza”University of Rome. The spectrophotometric differences in colour (ΔL*, Δa*, Δb*; Color Difference ΔE00; Whiteness Index ΔWIO) between sound enamel and clinically detected WSLs in each tooth were calculated. A correlation between Acceptability Threshold (AT = 3.3) and the calculated CIEDE2000 colour difference was performed. The L* value is measure of the lightness ranging from 0 (black) to 100 (white), the a* value of redness/greenness (a* ><0), and the b* value of yellowness/blueness (b*> <0). The colour change between sound and affected enamel for each tooth was defined by the CIEDE2000 colour space (ΔE00). WIO Index is the most up to date and appropriate index to measure tooth whiteness. Spectrophotometric differences in colour between sound enamel and clinically detected post orthodontic WSLs show a decrease in ΔL* (–1.06) and ΔWIO (–11.88) and an increase in Δa*(0.43) and Δb*(2.94). Overall colour change ΔE (4.38) was always higher than the Acceptability Threshold. In conclusion white spot lesions due to orthodontic fixed therapy affect colourimetric properties of teeth and the amount of the calculated colour difference is on average always higher than 3.3, indicating a detectable and aesthetically unacceptable, colour difference.

Orthodontic white spot lesions (WSLs) can affect patients’ aesthetic satisfaction? A spectrophotometric approach / Mazur, M.; Rinaldo, F.; Salvi, D.; Ndokaj, A.; Ottolenghi, L.; Nardi, G. M.; Guerra, F.. - In: CARIES RESEARCH. - ISSN 0008-6568. - ELETTRONICO. - 52:6(2018), pp. 496-496.

Orthodontic white spot lesions (WSLs) can affect patients’ aesthetic satisfaction? A spectrophotometric approach

M. Mazur
Primo
;
A. Ndokaj;L. Ottolenghi;G. M. Nardi
Penultimo
;
F. Guerra
Ultimo
2018

Abstract

The aim of this in vivo study was to evaluate the colourimetric changes between sound enamel and post orthodontic WSLs and to correlate these findings with human eye colour perception threshold using spectrophotometry. Experimental approach Seventy-six permanent teeth with post orthodontic WSLs in 12–16 years old patients were evaluated in this in vivo study at “Sapienza”University of Rome. The spectrophotometric differences in colour (ΔL*, Δa*, Δb*; Color Difference ΔE00; Whiteness Index ΔWIO) between sound enamel and clinically detected WSLs in each tooth were calculated. A correlation between Acceptability Threshold (AT = 3.3) and the calculated CIEDE2000 colour difference was performed. The L* value is measure of the lightness ranging from 0 (black) to 100 (white), the a* value of redness/greenness (a* ><0), and the b* value of yellowness/blueness (b*> <0). The colour change between sound and affected enamel for each tooth was defined by the CIEDE2000 colour space (ΔE00). WIO Index is the most up to date and appropriate index to measure tooth whiteness. Spectrophotometric differences in colour between sound enamel and clinically detected post orthodontic WSLs show a decrease in ΔL* (–1.06) and ΔWIO (–11.88) and an increase in Δa*(0.43) and Δb*(2.94). Overall colour change ΔE (4.38) was always higher than the Acceptability Threshold. In conclusion white spot lesions due to orthodontic fixed therapy affect colourimetric properties of teeth and the amount of the calculated colour difference is on average always higher than 3.3, indicating a detectable and aesthetically unacceptable, colour difference.
2018
tooth; white spot lesions; spectrophotometer
01 Pubblicazione su rivista::01h Abstract in rivista
Orthodontic white spot lesions (WSLs) can affect patients’ aesthetic satisfaction? A spectrophotometric approach / Mazur, M.; Rinaldo, F.; Salvi, D.; Ndokaj, A.; Ottolenghi, L.; Nardi, G. M.; Guerra, F.. - In: CARIES RESEARCH. - ISSN 0008-6568. - ELETTRONICO. - 52:6(2018), pp. 496-496.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1124953
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