Mechanical properties and color stability of provisional restoration resins

Hidehiko Watanabe, Eunghwan Kim, Noah L. Piskorski, Jennifer Sarsland, David A Covey, William W Johnson

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Purpose: To evaluate the mechanical strength and color stability of provisional restoration materials. Methods: For mechanical testing, four groups [Trim (PEMA), Alike (PMMA), Versatemp (bis-acrylic resin composite, BARC) and Perfectemp II (bis-acrylic fluoride enriched resin, BAFC)] of resin disks were prepared for fracture toughness and shear punch strength testing, respectively. Five samples were fabricated for each group; therefore, a total of 20 resin disks for each testing method was prepared. The load at fracture and shear punch values of each specimen were recorded after 24-hour storage in distilled water. The stress intensity factors (Kic) were calculated by the formula reported by Atkinson et al. For shear strength, the following formula was used: Shear strength = Force (N)/section thickness (mm) × punch circumference (mm). Values of each group in both tests were analyzed using one-way-ANOVA and Tukey multiple comparison test. For color stability testing, provisional resin disk specimens of the above mentioned materials were fabricated. Five samples were prepared for each subgroup (with and without a surface coating agent - Permaseal) and three different solutions (distilled water, red wine and curry); a total of 120 disk specimens were fabricated. Color values of each group were measured using a spectrophotometer after 24 hours and 2 weeks of aging in the aforementioned solutions. The color differences (ΔE*ab) between before and after aging were calculated by CIE Lab color-difference formula. The interaction of ΔE*ab values were analyzed by two-way analysis of variance followed by Newman-Keuls Multiple comparison test. Results: The highest fracture toughness value [(MPa (m)1/2)] was obtained by PMMA (0.89) followed by BARC (0.67), PEMA (0.54) and BAFC (0.42). Significant differences were observed among all test groups (P< 0.05). The highest shear punch strength (MPa) was obtained by BARC (160), followed by PMMA (141) and PEMA (132). The lowest value was obtained by BAFC (106). BARC showed a significantly higher mean value than the other groups (P< 0.05). PEMA and PMMA demonstrated better color stability than the two bisacrylic resin composites. Wine and curry showed higher stainability than water, recording higher ΔE*ab values than the clinically perceptible difference level of ΔE*ab 3.3. The surface coating agent groups demonstrated more staining than the non-coated groups. All groups, except for BARC, demonstrated significant differences dependent upon surface coating and solutions (P< 0.05).

Original languageEnglish (US)
Pages (from-to)265-270
Number of pages6
JournalAmerican journal of dentistry
Volume26
Issue number5
StatePublished - Oct 1 2013

Fingerprint

Acrylic Resins
Shear Strength
Color
Polymethyl Methacrylate
Wine
Water
Analysis of Variance
Composite Resins
Fluorides
Staining and Labeling

ASJC Scopus subject areas

  • Dentistry(all)

Cite this

Watanabe, H., Kim, E., Piskorski, N. L., Sarsland, J., Covey, D. A., & Johnson, W. W. (2013). Mechanical properties and color stability of provisional restoration resins. American journal of dentistry, 26(5), 265-270.

Mechanical properties and color stability of provisional restoration resins. / Watanabe, Hidehiko; Kim, Eunghwan; Piskorski, Noah L.; Sarsland, Jennifer; Covey, David A; Johnson, William W.

In: American journal of dentistry, Vol. 26, No. 5, 01.10.2013, p. 265-270.

Research output: Contribution to journalArticle

Watanabe, H, Kim, E, Piskorski, NL, Sarsland, J, Covey, DA & Johnson, WW 2013, 'Mechanical properties and color stability of provisional restoration resins', American journal of dentistry, vol. 26, no. 5, pp. 265-270.
Watanabe H, Kim E, Piskorski NL, Sarsland J, Covey DA, Johnson WW. Mechanical properties and color stability of provisional restoration resins. American journal of dentistry. 2013 Oct 1;26(5):265-270.
Watanabe, Hidehiko ; Kim, Eunghwan ; Piskorski, Noah L. ; Sarsland, Jennifer ; Covey, David A ; Johnson, William W. / Mechanical properties and color stability of provisional restoration resins. In: American journal of dentistry. 2013 ; Vol. 26, No. 5. pp. 265-270.
@article{f95c3763b89a434cb79ef86e64f48609,
title = "Mechanical properties and color stability of provisional restoration resins",
abstract = "Purpose: To evaluate the mechanical strength and color stability of provisional restoration materials. Methods: For mechanical testing, four groups [Trim (PEMA), Alike (PMMA), Versatemp (bis-acrylic resin composite, BARC) and Perfectemp II (bis-acrylic fluoride enriched resin, BAFC)] of resin disks were prepared for fracture toughness and shear punch strength testing, respectively. Five samples were fabricated for each group; therefore, a total of 20 resin disks for each testing method was prepared. The load at fracture and shear punch values of each specimen were recorded after 24-hour storage in distilled water. The stress intensity factors (Kic) were calculated by the formula reported by Atkinson et al. For shear strength, the following formula was used: Shear strength = Force (N)/section thickness (mm) × punch circumference (mm). Values of each group in both tests were analyzed using one-way-ANOVA and Tukey multiple comparison test. For color stability testing, provisional resin disk specimens of the above mentioned materials were fabricated. Five samples were prepared for each subgroup (with and without a surface coating agent - Permaseal) and three different solutions (distilled water, red wine and curry); a total of 120 disk specimens were fabricated. Color values of each group were measured using a spectrophotometer after 24 hours and 2 weeks of aging in the aforementioned solutions. The color differences (ΔE*ab) between before and after aging were calculated by CIE Lab color-difference formula. The interaction of ΔE*ab values were analyzed by two-way analysis of variance followed by Newman-Keuls Multiple comparison test. Results: The highest fracture toughness value [(MPa (m)1/2)] was obtained by PMMA (0.89) followed by BARC (0.67), PEMA (0.54) and BAFC (0.42). Significant differences were observed among all test groups (P< 0.05). The highest shear punch strength (MPa) was obtained by BARC (160), followed by PMMA (141) and PEMA (132). The lowest value was obtained by BAFC (106). BARC showed a significantly higher mean value than the other groups (P< 0.05). PEMA and PMMA demonstrated better color stability than the two bisacrylic resin composites. Wine and curry showed higher stainability than water, recording higher ΔE*ab values than the clinically perceptible difference level of ΔE*ab 3.3. The surface coating agent groups demonstrated more staining than the non-coated groups. All groups, except for BARC, demonstrated significant differences dependent upon surface coating and solutions (P< 0.05).",
author = "Hidehiko Watanabe and Eunghwan Kim and Piskorski, {Noah L.} and Jennifer Sarsland and Covey, {David A} and Johnson, {William W}",
year = "2013",
month = "10",
day = "1",
language = "English (US)",
volume = "26",
pages = "265--270",
journal = "American Journal of Dentistry",
issn = "0894-8275",
publisher = "Mosher and Linder, Inc",
number = "5",

}

TY - JOUR

T1 - Mechanical properties and color stability of provisional restoration resins

AU - Watanabe, Hidehiko

AU - Kim, Eunghwan

AU - Piskorski, Noah L.

AU - Sarsland, Jennifer

AU - Covey, David A

AU - Johnson, William W

PY - 2013/10/1

Y1 - 2013/10/1

N2 - Purpose: To evaluate the mechanical strength and color stability of provisional restoration materials. Methods: For mechanical testing, four groups [Trim (PEMA), Alike (PMMA), Versatemp (bis-acrylic resin composite, BARC) and Perfectemp II (bis-acrylic fluoride enriched resin, BAFC)] of resin disks were prepared for fracture toughness and shear punch strength testing, respectively. Five samples were fabricated for each group; therefore, a total of 20 resin disks for each testing method was prepared. The load at fracture and shear punch values of each specimen were recorded after 24-hour storage in distilled water. The stress intensity factors (Kic) were calculated by the formula reported by Atkinson et al. For shear strength, the following formula was used: Shear strength = Force (N)/section thickness (mm) × punch circumference (mm). Values of each group in both tests were analyzed using one-way-ANOVA and Tukey multiple comparison test. For color stability testing, provisional resin disk specimens of the above mentioned materials were fabricated. Five samples were prepared for each subgroup (with and without a surface coating agent - Permaseal) and three different solutions (distilled water, red wine and curry); a total of 120 disk specimens were fabricated. Color values of each group were measured using a spectrophotometer after 24 hours and 2 weeks of aging in the aforementioned solutions. The color differences (ΔE*ab) between before and after aging were calculated by CIE Lab color-difference formula. The interaction of ΔE*ab values were analyzed by two-way analysis of variance followed by Newman-Keuls Multiple comparison test. Results: The highest fracture toughness value [(MPa (m)1/2)] was obtained by PMMA (0.89) followed by BARC (0.67), PEMA (0.54) and BAFC (0.42). Significant differences were observed among all test groups (P< 0.05). The highest shear punch strength (MPa) was obtained by BARC (160), followed by PMMA (141) and PEMA (132). The lowest value was obtained by BAFC (106). BARC showed a significantly higher mean value than the other groups (P< 0.05). PEMA and PMMA demonstrated better color stability than the two bisacrylic resin composites. Wine and curry showed higher stainability than water, recording higher ΔE*ab values than the clinically perceptible difference level of ΔE*ab 3.3. The surface coating agent groups demonstrated more staining than the non-coated groups. All groups, except for BARC, demonstrated significant differences dependent upon surface coating and solutions (P< 0.05).

AB - Purpose: To evaluate the mechanical strength and color stability of provisional restoration materials. Methods: For mechanical testing, four groups [Trim (PEMA), Alike (PMMA), Versatemp (bis-acrylic resin composite, BARC) and Perfectemp II (bis-acrylic fluoride enriched resin, BAFC)] of resin disks were prepared for fracture toughness and shear punch strength testing, respectively. Five samples were fabricated for each group; therefore, a total of 20 resin disks for each testing method was prepared. The load at fracture and shear punch values of each specimen were recorded after 24-hour storage in distilled water. The stress intensity factors (Kic) were calculated by the formula reported by Atkinson et al. For shear strength, the following formula was used: Shear strength = Force (N)/section thickness (mm) × punch circumference (mm). Values of each group in both tests were analyzed using one-way-ANOVA and Tukey multiple comparison test. For color stability testing, provisional resin disk specimens of the above mentioned materials were fabricated. Five samples were prepared for each subgroup (with and without a surface coating agent - Permaseal) and three different solutions (distilled water, red wine and curry); a total of 120 disk specimens were fabricated. Color values of each group were measured using a spectrophotometer after 24 hours and 2 weeks of aging in the aforementioned solutions. The color differences (ΔE*ab) between before and after aging were calculated by CIE Lab color-difference formula. The interaction of ΔE*ab values were analyzed by two-way analysis of variance followed by Newman-Keuls Multiple comparison test. Results: The highest fracture toughness value [(MPa (m)1/2)] was obtained by PMMA (0.89) followed by BARC (0.67), PEMA (0.54) and BAFC (0.42). Significant differences were observed among all test groups (P< 0.05). The highest shear punch strength (MPa) was obtained by BARC (160), followed by PMMA (141) and PEMA (132). The lowest value was obtained by BAFC (106). BARC showed a significantly higher mean value than the other groups (P< 0.05). PEMA and PMMA demonstrated better color stability than the two bisacrylic resin composites. Wine and curry showed higher stainability than water, recording higher ΔE*ab values than the clinically perceptible difference level of ΔE*ab 3.3. The surface coating agent groups demonstrated more staining than the non-coated groups. All groups, except for BARC, demonstrated significant differences dependent upon surface coating and solutions (P< 0.05).

UR - http://www.scopus.com/inward/record.url?scp=84889825566&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84889825566&partnerID=8YFLogxK

M3 - Article

VL - 26

SP - 265

EP - 270

JO - American Journal of Dentistry

JF - American Journal of Dentistry

SN - 0894-8275

IS - 5

ER -