Influence of Daylight Exposure on the Color Stability and Staining Susceptibility of a Composite Resin

Nilay Bayraktar; Menekşe Ersoysal; Rabia Demir; Ebrar Bozkaya; Elif Nur Bağuş; Osman Tolga Harorlı

doi:10.7126/cumudj.1808135

EN TR

Influence of Daylight Exposure on the Color Stability and Staining Susceptibility of a Composite Resin

Abstract

Objective: This study aimed to evaluate the colour change of a composite resin following daylight exposure, simulating a clinical situation in which the composite remains in the mixing plate with the light-blocking plate left open during application. Additionally, the effect of polishing on colour recovery after coffee-induced staining was assessed. Materials and Methods: Twenty-eight disc-shaped composite samples (NeoSpectra ST, Dentsply Sirona, Germany) were prepared and exposed to daylight for 2, 4, or 6 minutes, with a control group which kept with light blocking plate covered. After 24-hour hydration in distilled water at 37°C, baseline colour values (T0) were recorded using a spectrophotometer. All groups, except the control, were immersed in a coffee solution for seven days, and colour measurements were repeated (T1). Subsequently, all stained samples were polished with Sof-Lex discs (3M ESPE, USA) following the manufacturer’s instructions, and colour readings were taken again (T2). Data were analysed using Shapiro–Wilk and One-Way ANOVA with Tukey post hoc tests. Results: Daylight exposure did not significantly affect the degree of staining among the experimental groups (p>0.05). All exposed groups showed significantly greater discolouration than the control (p<0.05). Polishing significantly reduced staining in all groups (p<0.001), though it was least effective in the 6-minute exposure group. Conclusion: Limited daylight exposure before polymerisation did not increase susceptibility to coffee staining. Polishing effectively reduced discolouration, yet colour changes in all experimental groups remained clinically unacceptable.

Keywords

Gün Işığına Maruz Kalmanın Kompozit Rezinin Renk Stabilitesi ve Leke Duyarlılığı Üzerindeki Etkisi

Abstract

Amaç: Bu çalışma, kompozit rezinin gün ışığına maruz kalmasıyla meydana gelen renk değişimini değerlendirmek amacıyla, uygulama sırasında ışık engelleyici plaka açık bırakılmış halde kompozitin karıştırma plakasında kaldığı klinik durumu simüle etmiştir. Ayrıca, kahve kaynaklı lekelenme sonrası parlatmanın renk geri kazanımına etkisi değerlendirilmiştir. Gereç ve Yöntem: Yirmi sekiz disk şeklinde kompozit numune (NeoSpectra ST, Dentsply Sirona, Almanya) hazırlanmış ve 2, 4 veya 6 dakika boyunca gün ışığına maruz bırakıldı, kontrol grubu ise ışık engelleyici plaka kapalı tutuldu. 37°C'de distile suda 24 saat hidrasyonun ardından, spektrofotometre kullanılarak başlangıç renk değerleri (T0) kaydedildi. Kontrol grubu hariç tüm gruplar yedi gün boyunca kahve çözeltisine daldırıldı ve renk ölçümleri tekrarlandı (T1). Ardından, tüm lekeli numuneler üreticinin talimatlarına göre Sof-Lex diskleri (3M ESPE, ABD) ile parlatıldı ve renk okumaları tekrar alındı (T2). Veriler Shapiro–Wilk ve Tukey post hoc testleri ile Tek Yönlü ANOVA kullanılarak analiz edildi. Sonuçlar: Gün ışığına maruz kalma, deney grupları arasında lekelenme derecesini önemli ölçüde etkilememiştir (p>0,05). Maruz kalan tüm gruplar, kontrol grubuna göre önemli ölçüde daha fazla renk değişikliği göstermiştir (p<0,05). Parlatma, tüm gruplarda lekelenmeyi önemli ölçüde azaltmıştır (p<0,001), ancak 6 dakikalık maruz kalma grubunda en az etkili olmuştur. Sonuç: Polimerizasyondan önce sınırlı gün ışığına maruz kalma, kahve lekelenmesine yatkınlığı artırmadı. Parlatma, renk değişikliğini etkili bir şekilde azalttı, ancak tüm deney gruplarında renk değişiklikleri klinik olarak kabul edilemez düzeyde kaldı.

Keywords

References

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Details

Primary Language

English

Subjects

Restorative Dentistry

Journal Section

Research Article

Authors

Nilay Bayraktar ^*
0000-0003-2343-9131
Türkiye

Menekşe Ersoysal
0009-0003-6388-9820
Türkiye

Rabia Demir
0009-0005-4648-4471
Türkiye

Ebrar Bozkaya
0009-0006-7916-0227
Türkiye

Elif Nur Bağuş
0009-0001-7541-174X
Türkiye

Osman Tolga Harorlı
0000-0001-6828-5063
Türkiye

Publication Date

July 1, 2026

Submission Date

October 22, 2025

Acceptance Date

June 2, 2026

Published in Issue

Year 2026 Volume: 29 Number: 2

DOI

https://doi.org/10.7126/cumudj.1808135

IZ

https://izlik.org/JA27PB27GC

Cite

RIS / Bibtex

APA

Bayraktar, N., Ersoysal, M., Demir, R., Bozkaya, E., Bağuş, E. N., & Harorlı, O. T. (2026). Influence of Daylight Exposure on the Color Stability and Staining Susceptibility of a Composite Resin. Cumhuriyet Dental Journal, 29(2), 245-250. https://doi.org/10.7126/cumudj.1808135

AMA

1.Bayraktar N, Ersoysal M, Demir R, Bozkaya E, Bağuş EN, Harorlı OT. Influence of Daylight Exposure on the Color Stability and Staining Susceptibility of a Composite Resin. Cumhuriyet Dent J. 2026;29(2):245-250. doi:10.7126/cumudj.1808135

Chicago

Bayraktar, Nilay, Menekşe Ersoysal, Rabia Demir, Ebrar Bozkaya, Elif Nur Bağuş, and Osman Tolga Harorlı. 2026. “Influence of Daylight Exposure on the Color Stability and Staining Susceptibility of a Composite Resin”. Cumhuriyet Dental Journal 29 (2): 245-50. https://doi.org/10.7126/cumudj.1808135.

EndNote

Bayraktar N, Ersoysal M, Demir R, Bozkaya E, Bağuş EN, Harorlı OT (July 1, 2026) Influence of Daylight Exposure on the Color Stability and Staining Susceptibility of a Composite Resin. Cumhuriyet Dental Journal 29 2 245–250.

IEEE

[1]N. Bayraktar, M. Ersoysal, R. Demir, E. Bozkaya, E. N. Bağuş, and O. T. Harorlı, “Influence of Daylight Exposure on the Color Stability and Staining Susceptibility of a Composite Resin”, Cumhuriyet Dent J, vol. 29, no. 2, pp. 245–250, July 2026, doi: 10.7126/cumudj.1808135.

ISNAD

Bayraktar, Nilay - Ersoysal, Menekşe - Demir, Rabia - Bozkaya, Ebrar - Bağuş, Elif Nur - Harorlı, Osman Tolga. “Influence of Daylight Exposure on the Color Stability and Staining Susceptibility of a Composite Resin”. Cumhuriyet Dental Journal 29/2 (July 1, 2026): 245-250. https://doi.org/10.7126/cumudj.1808135.

JAMA

1.Bayraktar N, Ersoysal M, Demir R, Bozkaya E, Bağuş EN, Harorlı OT. Influence of Daylight Exposure on the Color Stability and Staining Susceptibility of a Composite Resin. Cumhuriyet Dent J. 2026;29:245–250.

MLA

Bayraktar, Nilay, et al. “Influence of Daylight Exposure on the Color Stability and Staining Susceptibility of a Composite Resin”. Cumhuriyet Dental Journal, vol. 29, no. 2, July 2026, pp. 245-50, doi:10.7126/cumudj.1808135.

Vancouver

1.Nilay Bayraktar, Menekşe Ersoysal, Rabia Demir, Ebrar Bozkaya, Elif Nur Bağuş, Osman Tolga Harorlı. Influence of Daylight Exposure on the Color Stability and Staining Susceptibility of a Composite Resin. Cumhuriyet Dent J. 2026 Jul. 1;29(2):245-50. doi:10.7126/cumudj.1808135