Determinação da cor de diferentes escalas por dois métodos espectrofotométricos – estudo in vitro

Dias, Susana; Marques, Duarte; Silveira, João; Corado, Daniela; Alves, Rita; Mata, António

doi:10.24873/j.rpemd.2017.10.023

Cited by 4 publications

(6 citation statements)

References 33 publications

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“…Therefore, and comparing with the results mentioned in the literature, the use of a spectrophotometer continues to be the method with higher agreement. 5,11,[21][22][23][24] However, in our study the intradevice agreement increased after performing dental prophylaxis which suggests that extrinsic stains could be a possible confounding factor in tooth color T A B L E 3 Kappa agreement and asymptotic error related to methods and light conditions for tooth color measurements in both study's appointments determination, and therefore should be removed previous to aesthetical treatments to increase clinical predictability. These findings were also reported in literature, [14][15][16][17] although only from in vitro studies thus requiring clinical validation.…”

Section: Discussionmentioning

confidence: 59%

“…Research, Niederhasli, Switzerland; serial number HDL3973), was used as a gold standard measurement method, since it is considered as a diagnostic test device with high levels of reproducibility, requiring low level of training and with good matching with the standard tooth shade guides. 5,11,[21][22][23][24] The SS was operated by an independent investigator, according to manufacturer's instructions, performing three measuring rounds. Results were registered in VC shade guide and CIE L*a*b* system.…”

Section: A Spectrophotometer Spectroshade Micro (Ss) (Mht Opticmentioning

confidence: 99%

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Dental prophylaxis influence in tooth color assessment—Clinical study

Pereira

Corado

Silveira

et al. 2020

J Esthet Restor Dent

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Objective: To evaluate dental prophylaxis influence in tooth color assessment with the use of different methods. Materials and methods: Volunteers were consecutively recruited and screened according to appropriate inclusion/exclusion criteria. Each participant's upper right central incisive and canine color was measured before and after dental prophylaxis with a one-week interval. Tooth color assessment was performed by calibrated operators and the patient using a VITA Classical shade guide and by spectrophotometric methods with a proper device (SpectroShade). Color was reported as mean with SD of Commission Internationale De l'Eclairage (CIE) L*a*b* values, ΔE ab and ΔE 00. Oneway analysis of variance and Tukey post hoc were performed to assess differences between methods and paired t test for assessing differences in tooth color coordinates after dental prophylaxis. Values of P < .05 were taken as significant. Results: Fifty patients were included. Self-assessed dental prophylaxis effects equated to a significantly different mean ΔE 00 value of 2.3 ± 1.7 (P < .01), when compared to the calibrated operator reported 0.8 ± 1.1 and the spectrophotometer 1.0 ± 0.5. Half of volunteer's ΔE 00 values surpassed the acceptability threshold, when compared to 28% from investigator and 10% from spectrophotometer. Conclusion: Performing a dental prophylaxis did have an influence in tooth color perception with a higher self-perceived effect in the patient assessment. Clinical significance: The results of this study suggest that performing professional dental prophylaxis presented a perceived effect in tooth color regardless of the method used being that patients precepted whiter and less yellowish teeth. Since extrinsic stain is considered as one of the factors that could influence tooth color assessment, performing professional dental prophylaxis prior to composite or ceramic color selection in anterior teeth restorations could consequently increase treatment predictability.

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Section: Discussionmentioning

confidence: 59%

Section: A Spectrophotometer Spectroshade Micro (Ss) (Mht Opticmentioning

confidence: 99%

Dental prophylaxis influence in tooth color assessment—Clinical study

Pereira

Corado

Silveira

et al. 2020

J Esthet Restor Dent

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“…A calibrated operator conducted 34 consecutive measurements of each tab from the three different batches of VC and VM using the two digital methods (SS and eLAB), resulting in a total of 102 measurements per tab. All measurements were performed in a dark chamber following a predefined methodology [ 17 , 18 , 21 ].…”

Section: Methodsmentioning

confidence: 99%

“…Due to the limitations of visual colour determination, instrumental methods, such as spectrophotometers, colourimeters, or digital photography, have gained popularity due to their higher accuracy [ 4 , 8 , 15 ]. However, these instrumental methods have a steep learning curve due to their complexity and require specific and expensive technology, which may not always be available to clinicians [ 8 , 17 , 18 ].…”

Section: Introductionmentioning

confidence: 99%

Different Methods for Assessing Tooth Colour—In Vitro Study

Dias,

Pereira

et al. 2023

Biomimetics

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Colour assessment using digital methods can yield varying results, and it is important for clinicians to recognize the potential variability intra and inter-device. This study aimed to compare the L*a*b* values of VITA Classical (VC) and VITA Toothguide 3D-MASTER (VM) guides using two methods, SpectroShade (SS) and eLAB. Thirty-four measurements per tab were performed by a single operator across three batches of each guide. Intraclass correlation coefficients (ICC) between batches were calculated. Values <0.5, 0.5–0.75, 0.75–0.9, and >0.90 were classified as poor, moderate, good, and excellent reliability, respectively. Results were reported as mean and standard deviation of the L*a*b* values and respective colour differences (ΔE00) for each tab and method. Statistical analyses were performed with an independent t-test, α = 0.05. ICC values between batches were excellent for all L*a*b*, except for a* component in eLAB. There were statistically significant differences between methods in most L*a*b* values. The intra-device mean ΔE00 was 0.5 ± 0.6 for VC, 0.5 ± 0.8 for VM in SS, 1.1 ± 0.8 for VC, 1.1 ± 0.9 for VM in eLAB. The mean ΔE00 inter-device was 4.9 ± 1.7 for VC, 5.0 ± 1.7 for VM. Both methods demonstrated good internal consistency, with high ICC values and low intra-device colour differences, but exhibited high variability between methods, higher for a* the component.

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“…Tooth color was evaluated by spectrophotometry with a proper device: SpectroShade micro (SS) (MHT Optic Research, Niederhasli, Switzerland; serial number HDL3973). [19][20][21] The device was operated according to the manufacturer's instructions by an independent investigator, who performed three measuring rounds in upper and lower anterior teeth (canine to canine -12 teeth). Results were registered before and after the tooth bleaching treatment in the CIE L*a*b* tooth color coordinates system (CIE L*a*b* values of the buccal tooth surface), and the difference (ΔE 00 ) was calculated to determine bleaching effectiveness.…”

Section: Methodsmentioning

confidence: 99%

In-office tooth bleaching effectiveness with different soft-tissue barriers – randomized controlled trial

Cardoso¹,

Pereira²,

Silveira³

et al. 2021

j.rpemd

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Objectives: To evaluate the tooth bleaching effectiveness of a 6% hydrogen peroxide paint-on varnish with two different types of soft-tissue protection materials. Methods: Twenty patients were screened according to inclusion and exclusion criteria, submitted to professional dental prophylaxis, and randomly allocated to one of the two groups. An in-office bleaching technique protocol was performed (VivaStyle Paint On PIus, lvoclar- Vivadent®, Liechtenstein) with two different soft-tissue protection materials: Group 1 – Vaseline; Group 2 – block-out resin. Bleaching effectiveness was evaluated with ΔE00 and ΔWID, calculated from the CIE L*a*b* values obtained by spectrophotometry analysis (SpectroShade). Appropriate statistical tests were performed to analyze intragroup differences in CIE L*a*b* and WID values and intergroup differences in ΔE00 and ΔWID with α=0.05. Results: Both groups presented statistically significant (P<0.01) differences in CIE L*a*b* and WID. Both ΔE00 and ΔWID surpassed the acceptability threshold (ΔE00 > 1.8; ΔWID > 2.60), and the ΔWID was mostly classified as hardly acceptable differences. Group 2 presented higher statistically significant (P<0.01) mean values with ΔE00 = 3.5 ± 1.5 and ΔWID = 8.6 ± 4.2. Conclusions: The 6% hydrogen peroxide paint-on varnish tooth bleaching technique showed clinical effectiveness. However, effectiveness varied with the soft-tissue protection material used, with better results when applying a block-out resin, thus suggesting its clinical recommendation.

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Determinação da cor de diferentes escalas por dois métodos espectrofotométricos – estudo in vitro

Cited by 4 publications

References 33 publications

Dental prophylaxis influence in tooth color assessment—Clinical study

Dental prophylaxis influence in tooth color assessment—Clinical study

Different Methods for Assessing Tooth Colour—In Vitro Study

In-office tooth bleaching effectiveness with different soft-tissue barriers – randomized controlled trial

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