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All Journal Majalah Kedokteran Gigi Indonesia ODONTO Dental Journal Jurnal Kesehatan Gigi Padjadjaran Journal of Dentistry Odonto dental journal
Widyastuti, Andina
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Biochemistry, Genetics & Molecular Biology Dentistry Health Professions Immunology & microbiology Medicine & Pharmacology Public Health

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Effect of nanofilled self-adhesive protective coating on color changes and surface roughness of composite resin Rinastiti, Margareta; Widyastuti, Andina
Odonto : Dental Journal Vol 10, No 1 (2023): July 2023
Publisher : Faculty of Dentistry, Universitas Islam Sultan Agung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30659/odj.10.1.28-36

Abstract

Background: Discoloration of composite restorations may affecting aesthetic appearance. The aging-process and surface roughness may influence color changes. A nanofilled self-adhesive protecting coating has been developed for coating tooth restoration and expected to prolong the longevity of restoration. To evaluate the effect of nanofilled self-adhesive protective coating on the surface roughness and color-changes of flowable and packable composite after aging condition. Methods: The total of 40 discs (15x2mm) and 60 boxes (20×10× 2mm) specimens from flowable and packable composite were used. A half of the specimens was coated by using protective-coating. The reflectance chromameter was used to measure the color baseline. Afterward, the specimens were subjected into aging process by immersing in artificial saliva and carbonated drink (37oC,7d). The color changes were calculated based on the [CIE L*a*b*].For surface roughness, box-shaped specimens were measured in fresh condition, after aging conditions. Results: The color change ranged from 0.49 to 2.31. Applying protective-coating was associated with a significant decrease in the color-changes and surface roughness after aging. The changes of three color coordinates resulted in significant differences for both composite, with and without protective coating application. Conclusion: The application of protective-coating decrease the color-changes and surface roughness of flowable and packable composite-resin.
Effect of adhesive techniques and preheated composite resin types as luting agents on shear bond strength of lithium disilicate: an experimental study Damayanti, Asri; Untara, Raphael Tri Endra; Widyastuti, Andina
Padjadjaran Journal of Dentistry Vol 38, No 1 (2026): March 2026
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/pjd.vol38no1.61837

Abstract

Introduction: The success of veneers is influenced by the cementation procedure. Preheated composite resin has been proposed as a luting material for indirect adhesive restorations because of its improved mechanical and handling properties. Composite resin bonds effectively to tooth structures using adhesive systems. This study aimed to evaluate the effect of different adhesive application techniques and types of preheated composite resin as luting materials on the shear bond strength of lithium disilicate. Methods: Twenty-eight extracted maxillary premolars were prepared on the buccal surface to expose dentin and divided into four experimental groups. Lithium disilicate discs (3 mm in diameter and 1 mm in thickness) were cemented onto the prepared surfaces according to the assigned group protocols. Group IA received preheated microhybrid composite with total-etch adhesive, IB received self-etch adhesive; IIA received preheated nanohybrid composite with total-etch adhesive, and IIB received self-etch adhesive. After cementation, the samples were immersed in artificial saliva at 37oC for 24 hours. Shear bond strength testing was conducted using a universal testing machine. Debonded samples were observed under a stereomicroscope to determine bonding failure. Data were analyzed using two-way ANOVA and post hoc LSD tests with a 95% confidence level. Results: Total-etch adhesive demonstrated higher shear bond strength (SBS) than self-etch adhesive for both composite types. The highest SBS was observed in the total-etch microhybrid group (14.03 ± 0.12 MPa), followed by the total-etch nanohybrid group (12.99 ± 0.09 MPa) and the self-etch microhybrid group (13.67 ± 0.18 MPa), while the lowest value was recorded in the self-etch nanohybrid group (10.21 ± 0.22 MPa) Conclusion: Preheated microhybrid composite resin produced higher shear bond strength with lithium disilicate than preheated nanohybrid composite resin, and the total-etch adhesive technique resulted in higher shear bond strength than the self-etch technique.
Co-Authors Aspriyanti, Silva Eliana Damayanti, Asri Diatri Nari Ratih Karima, Aftina Mutiara Maharani, Cyntia Dewi Margareta Rinastiti Nari Ratih, Diatri Premadhika, Yogi Raphael Tri Endra Untara Regina, APrima Vista Okta Satria, Angga Novendra Eka Tri Endra Untara, Tri Endra Wignyo Hadriyanto