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Influence of toothbrush abrasion and surface treatments on the color and translucency of resin infiltrated hybrid ceramics

Journal of Advanced Prosthodontics 2021년 13권 1호 p.1 ~ 11
Labban Nawaf, Al Amri Mohammad, Alhijji Saleh, Alnafaiy Sarah, Alfouzan Afnan, Iskandar Mounir, Feitosa Sabrina,
소속 상세정보
 ( Labban Nawaf ) - King Saud University College of Dentistry Department of Prosthetic Dental Sciences
 ( Al Amri Mohammad ) - King Saud University College of Dentistry Department of Prosthetic Dental Sciences
 ( Alhijji Saleh ) - Indiana University School of Dentistry
 ( Alnafaiy Sarah ) - King Saud University College of Dentistry Department of Prosthetic Dental Sciences
 ( Alfouzan Afnan ) - King Saud University College of Dentistry Department of Prosthetic Dental Sciences
 ( Iskandar Mounir ) - Private Practice at Radiance Dentistry
 ( Feitosa Sabrina ) - Indiana University School of Dentistry Department of Biomedical Sciences and Comprehensive Care

Abstract


PURPOSE: The study compared the color change, lightness, and translucency of hybrid resin ceramics exposed to toothbrush abrasion and surface treatment.

MATERIALS AND METHODS: Four hybrid ceramics [Lava Ultimate (LU), Vita Enamic (EN), Shofu HC (SH), and Crystal Ultra (CU)] were compared with a glass-ceramic (Vita Mark II) control. One hundred and twenty specimen blocks were prepared using a precision saw machine. Specimens in each material were divided into four subgroups based on the surface treatment (polishing or staining) and a storage medium (water or citric acid). Simulated tooth brushing with a mixture of 100 RDA (radioactive abrasives) with 0.3 ml distilled water was used for 3650 cycles (7300 strokes) for each specimen. Measurements for the color change, lightness, and translucency were measured after toothbrushing using a spectrophotometer. Statistical analysis compared outcomes using paired t-test, ANOVA, and Tukey post hoc test.

RESULTS: The maximum color change was identified in SH (stained acid) [1.44 (0.40)], whereas the lowest was identified in EN (polished water) [0.66 (0.16)] material. The maximum and minimum loss of surface translucency was observed in SH (polished water) [12.3 (0.52)] and EN (stained acid) [6.5 (0.55)] specimens, respectively. Lastly, loss of lightness was the highest in VM (polished acid) [69 (0.95)], whereas the lowest was observed in CU (stained water) [56.7 (0.86)].

CONCLUSION: The comparison presented a significant effect of toothbrush abrasion on translucency and lightness of the hybrid resin ceramics. Color change was not significantly influenced irrespective of the storage medium employed. Surface staining demonstrated the preservation and stability of color and optical properties under the influence of toothbrush abrasion and chemical trauma.

키워드

Hybrids; Ceramic; Dental abrasion; Stains; Dental esthetic

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