Restorative Dentistry & Endodontics

Basic Research

The evaluation of color and color difference according to the layering placement of Incisal shade composites on the body composites of the indirect resin restoration: Su-Jung Park, Han-Young Lee, Myong-Yun Nah, Hoon-Sang Chang, Yun-Chan Hwang, Won-Mann Oh, In-Nam Hwang; J Korean Acad Conserv Dent 2011;36(1):37-49. Published online January 14, 2011; DOI: https://doi.org/10.5395/JKACD.2011.36.1.37

Abstract Objectives:

The aim of this study was to evaluate the surface color of indirect resin restoration according to the layering placement of different shade of incisal composite.

Materials and Methods:

In this study, CIE L*a*b* value of 16 Body composite of Tescera ATL (Bisco, Schaumburg IL, USA) was measured by spectrophotometer (NF999, Nippon Denshuku, Japan), and compared to CIE L*a*b* value of Vitapan shade guide. Nine shade Incisal composite of Tescera ATL were buildup to 1 mm thickness on Body composites inlay block, and CIE L*a*b* value was measured. Incisal composite was ground to 0.5 mm thickness and CIE L*a*b* value was re-measured. Color difference between Body composite and Incisal composites layered on Body composite was calculated as a function of thickness.

Results:

Color difference between corresponding shade of Tescera Body composite and Vitapan shade guide was from 6.88 to 12.80.

L* and b*value was decreased as layering thickness of Incisal composite on Body composite was increased. But, a* value did not show specific change tendency.

Conclusions:

Surface color difference between Body composites and Incisal composites layered on Body composite was increased as the layering thickness of Incisal composite increased (p < 0.05).

Citations

Citations to this article as recorded by

Color stability of esthetic restorative materials after application of fluoride varnishes
Chul-Hoon Jang, Dong-Gil Jang, Bin-Na Lee, Hoon-Sang Chang, Yun-Chan Hwang, Won-Mann Oh, In-Nam Hwang
Korean Journal of Dental Materials.2021; 48(3): 147. CrossRef
Color Change in Tooth Induced by Various Calcium Silicate-Based Pulp-Capping Materials
Jiyoon Jeon, Namki Choi, Seonmi Kim
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY.2021; 48(3): 280. CrossRef
Discrimination between FRC-post and core according to the color difference
Jou-Hwe Kim, Jin-Woo Kim, Kyung-Mo Cho, Se-Hee Park
Journal of Dental Rehabilitation and Applied Science.2015; 31(2): 75. CrossRef
Optical characteristics of resin composite before and after polymerization
Ah-Hyang Eom, Duck-Su Kim, Soo-Hee Lee, Chang-Won Byun, Noh-Hoon Park, Kyoung-Kyu Choi
Journal of Korean Academy of Conservative Dentistry.2011; 36(3): 219. CrossRef

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Original Article

Shear bond strength of repaired composite resin restorations: Soo-young Choi, Sun-Wa Jeong, Yun-Chan Hwang, Sun-Ho Kim, Chang Yun, Won-Mann Oh, In-Nam Hwang; J Korean Acad Conserv Dent 2002;27(6):569-576. Published online November 30, 2002; DOI: https://doi.org/10.5395/JKACD.2002.27.6.569

Abstract PDF PubReader ePub

This study was performed to evaluate the interfacial shear bond strength of base (direct and indirect) and repair composites with aging and surface treatment methods.

Direct composite resin specimens (Charisma®, Heraeus Kulzer, Germany) were aged for 5 min, 1 hour, 24 hours, and 1 week in 37℃ distilled water before surface treatment, and then divided into five groups: Group 1, grinding; Group 2, grinding and application of bonding agent; Group 3, grinding, etching with 37% phosphoric acid for 30sec, and application of bonding agent; Group 4, grinding, etching with 37% phosphoric acid for 30sec, silane treatment, and application of bonding agent; Group 5, grinding, etching with 4% hydrofluoric acid for 30sec, silane treatment, and application of bonding agent.

Indirect composite resin specimens (Artglass®, Heraeus Kulzer, Germany) were aged for 1 week in 37℃ distilled water and divided into seven groups: Group 1 - Group 5, equal to Charisma specimens; Group 6, grinding, etching with 37% phosphoric acid for 60sec, silane treatment, and application of bonding agent; Group7, grinding, etching with 4% hydrofluoric acid for 60 sec, silane treatment, and application of bonding agent.

The repair material(Charisma®) was then added on the center of the surface (5 mm in diameter, 5 mm in height). The shear bond strength was tested and the data was analyzed using one-way ANOVA and the Student-Newman-Keuls test.

The following conclusions were drawn.

1. The shear bond strength of Charisma® specimens aged for 1 hour was significantly higher in Group 2 and Group 5 than in Group 1 (p<0.05), and that of Charisma® specimens aged for 1 week was significantly higher in Group 3 and Group 5 than in Group 1 (p<0.05). No significant difference was found in the bond strength of specimens aged for 5 min and 24 hours.

2. In Group 2 of the Charisma® specimens, there was significant difference between the bond strength of 24 hours and that of 1 week (p<0.05).

3. In Group 4 of the Charisma® specimens, the shear bond strength of specimens aged for 24 hours was significantly higher than the others(p<0.05).

4. There was no significant difference between the shear bond strength of the Artglass® specimens.

5. Most of the Charisma® specimens showed cohesive fractures. Artglass® specimens that were etched with acid (phosphoric or hydrofluoric) for 30 sec showed more cohesive fractures.

Citations

Citations to this article as recorded by

Analysis of the 2-dimensional marginal fit of the occlusal surface and the 3-dimensional accuracy of the inner surface of the occlusal surface according to the inlay prosthesis structure made of composite resin
Kim Dong-Yeon, Lee Tae-Hee, Park Dong-In, Park Jin-Young, Jeong Il-Do, Lee Ha-Na, Kim Ji-Hwan, Kim Woong-Chul
Journal of Korean Acedemy of Dental Technology.2019; 41(1): 21. CrossRef
The study of fractural behavior of repaired composite
Sang-Soon Park, Wook Nam, Ah-Hyang Eom, Duck-Su Kim, Gi-Woon Choi, Kyoung-Kyu Choi
Journal of Korean Academy of Conservative Dentistry.2010; 35(6): 461. CrossRef

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