Effect of heat on the flow of commercial composites

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Purpose: This study compared the flowability of various commercial dental composites to flowable composites in response to warming in a composite warmer. Methods: 18 conventional resin composites and four flowable composites were tested at room temperature (23°C), and the conventional composites were tested after pre-heating in a Calset unit (Addent) to 54°C or 68°C. Flowability was determined by placing uncured composite onto plastic sheets and loading for 180 seconds (4 kg load) while maintained at 36°C (conditioning temperature [n=3]) to simulate placing room temperature composite into a tooth. The composite was light-cured for 40 seconds. The thickness of the specimens were measured. Thickness/volume (T/V) were compared for the composites for the three temperatures, and between flowable and conventional composites at 23°C (one-way ANOVA/Tukey's; P<0.05). Results: At 23°C, the flowable composites T/V were significantly less than the conventional composites (P<0.001), ranging from 0.46 mm/cm3 (Perma Flo HV) to 1.43 mm/cm 3 (Point 4 Flow), except for Z100 (1.48 mm/cm3/±0. 32), Z250 (1.79 mm/cm3/±0.09), Gradia (1.53 mm/cm 3/±0.07), and Grandio (1.98 mm/cm3/±0.07). The T/V of the conventional composites were not significantly different at all three temperatures (P> 0.05), except for Esthet-X which showed the greatest T/V decrease at 68°C (3.84 mm/cm3/±0.3) compared to 23°C (6.44 mm/cm3/±0.36) and 4 Seasons which showed the greatest T/V decrease at 54°C (3 mm/cm3/±0.1) compared to 23°C (3.57 mm/cm3/±0.1.4).

Original languageEnglish (US)
Pages (from-to)92-96
Number of pages5
JournalAmerican Journal of Dentistry
Volume22
Issue number2
StatePublished - Apr 2009

Fingerprint

Hot Temperature
Temperature
Tooth
Composite Resins
Heating
Plastics
Analysis of Variance
Light
flowable hybrid composite

ASJC Scopus subject areas

  • Dentistry(all)

Cite this

Effect of heat on the flow of commercial composites. / da Costa, Juliana; McPharlin, Rose; Hilton, Thomas (Tom); Ferracane, Jack.

In: American Journal of Dentistry, Vol. 22, No. 2, 04.2009, p. 92-96.

Research output: Contribution to journalArticle

@article{12cfacf6e6f34a9ea26ac862d29de155,
title = "Effect of heat on the flow of commercial composites",
abstract = "Purpose: This study compared the flowability of various commercial dental composites to flowable composites in response to warming in a composite warmer. Methods: 18 conventional resin composites and four flowable composites were tested at room temperature (23°C), and the conventional composites were tested after pre-heating in a Calset unit (Addent) to 54°C or 68°C. Flowability was determined by placing uncured composite onto plastic sheets and loading for 180 seconds (4 kg load) while maintained at 36°C (conditioning temperature [n=3]) to simulate placing room temperature composite into a tooth. The composite was light-cured for 40 seconds. The thickness of the specimens were measured. Thickness/volume (T/V) were compared for the composites for the three temperatures, and between flowable and conventional composites at 23°C (one-way ANOVA/Tukey's; P<0.05). Results: At 23°C, the flowable composites T/V were significantly less than the conventional composites (P<0.001), ranging from 0.46 mm/cm3 (Perma Flo HV) to 1.43 mm/cm 3 (Point 4 Flow), except for Z100 (1.48 mm/cm3/±0. 32), Z250 (1.79 mm/cm3/±0.09), Gradia (1.53 mm/cm 3/±0.07), and Grandio (1.98 mm/cm3/±0.07). The T/V of the conventional composites were not significantly different at all three temperatures (P> 0.05), except for Esthet-X which showed the greatest T/V decrease at 68°C (3.84 mm/cm3/±0.3) compared to 23°C (6.44 mm/cm3/±0.36) and 4 Seasons which showed the greatest T/V decrease at 54°C (3 mm/cm3/±0.1) compared to 23°C (3.57 mm/cm3/±0.1.4).",
author = "{da Costa}, Juliana and Rose McPharlin and Hilton, {Thomas (Tom)} and Jack Ferracane",
year = "2009",
month = "4",
language = "English (US)",
volume = "22",
pages = "92--96",
journal = "American Journal of Dentistry",
issn = "0894-8275",
publisher = "Mosher and Linder, Inc",
number = "2",

}

TY - JOUR

T1 - Effect of heat on the flow of commercial composites

AU - da Costa, Juliana

AU - McPharlin, Rose

AU - Hilton, Thomas (Tom)

AU - Ferracane, Jack

PY - 2009/4

Y1 - 2009/4

N2 - Purpose: This study compared the flowability of various commercial dental composites to flowable composites in response to warming in a composite warmer. Methods: 18 conventional resin composites and four flowable composites were tested at room temperature (23°C), and the conventional composites were tested after pre-heating in a Calset unit (Addent) to 54°C or 68°C. Flowability was determined by placing uncured composite onto plastic sheets and loading for 180 seconds (4 kg load) while maintained at 36°C (conditioning temperature [n=3]) to simulate placing room temperature composite into a tooth. The composite was light-cured for 40 seconds. The thickness of the specimens were measured. Thickness/volume (T/V) were compared for the composites for the three temperatures, and between flowable and conventional composites at 23°C (one-way ANOVA/Tukey's; P<0.05). Results: At 23°C, the flowable composites T/V were significantly less than the conventional composites (P<0.001), ranging from 0.46 mm/cm3 (Perma Flo HV) to 1.43 mm/cm 3 (Point 4 Flow), except for Z100 (1.48 mm/cm3/±0. 32), Z250 (1.79 mm/cm3/±0.09), Gradia (1.53 mm/cm 3/±0.07), and Grandio (1.98 mm/cm3/±0.07). The T/V of the conventional composites were not significantly different at all three temperatures (P> 0.05), except for Esthet-X which showed the greatest T/V decrease at 68°C (3.84 mm/cm3/±0.3) compared to 23°C (6.44 mm/cm3/±0.36) and 4 Seasons which showed the greatest T/V decrease at 54°C (3 mm/cm3/±0.1) compared to 23°C (3.57 mm/cm3/±0.1.4).

AB - Purpose: This study compared the flowability of various commercial dental composites to flowable composites in response to warming in a composite warmer. Methods: 18 conventional resin composites and four flowable composites were tested at room temperature (23°C), and the conventional composites were tested after pre-heating in a Calset unit (Addent) to 54°C or 68°C. Flowability was determined by placing uncured composite onto plastic sheets and loading for 180 seconds (4 kg load) while maintained at 36°C (conditioning temperature [n=3]) to simulate placing room temperature composite into a tooth. The composite was light-cured for 40 seconds. The thickness of the specimens were measured. Thickness/volume (T/V) were compared for the composites for the three temperatures, and between flowable and conventional composites at 23°C (one-way ANOVA/Tukey's; P<0.05). Results: At 23°C, the flowable composites T/V were significantly less than the conventional composites (P<0.001), ranging from 0.46 mm/cm3 (Perma Flo HV) to 1.43 mm/cm 3 (Point 4 Flow), except for Z100 (1.48 mm/cm3/±0. 32), Z250 (1.79 mm/cm3/±0.09), Gradia (1.53 mm/cm 3/±0.07), and Grandio (1.98 mm/cm3/±0.07). The T/V of the conventional composites were not significantly different at all three temperatures (P> 0.05), except for Esthet-X which showed the greatest T/V decrease at 68°C (3.84 mm/cm3/±0.3) compared to 23°C (6.44 mm/cm3/±0.36) and 4 Seasons which showed the greatest T/V decrease at 54°C (3 mm/cm3/±0.1) compared to 23°C (3.57 mm/cm3/±0.1.4).

UR - http://www.scopus.com/inward/record.url?scp=69549106155&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=69549106155&partnerID=8YFLogxK

M3 - Article

C2 - 19626972

AN - SCOPUS:69549106155

VL - 22

SP - 92

EP - 96

JO - American Journal of Dentistry

JF - American Journal of Dentistry

SN - 0894-8275

IS - 2

ER -