Evaluation of the effects of initial water temperature and curing time on fiberglass cast strength

Marcos Pérez-Nogués, Julie E Dechant, Tanya Garcia-Nolen, Susan M Stover

Research output: Contribution to journalArticle

Abstract

Objective: To determine the effects of water temperature and cure time on cast strength. Study design: Prospective randomized experimental study. Methods: Two water temperatures were tested, 23°C (cold) and 42°C (warm). Cast constructs were made of 4-inch fiberglass casting material over a rubber mandrel. Each construct was divided into 3 segments and tested in 4-point bending at 0.5, 1, and 24 hours. Stiffness and bending moment, cumulative energy, and angular deformation at yield and failure were recorded and analyzed by using repeated measures ANOVA. Results: Mean time ± SD to complete the construct was 2.2 ± 0.8 and 2.3 ± 0.6 minutes for warm and cold water, respectively. Warm water and longer cure times produced constructs with greater stiffness (23.05 vs 20.88 newton-meter degrees [Nm°] at 0.5 hours), bending moment (121.75 vs 107.31 Nm° at 0.5 hours), and cumulative energy (557.33 vs 428.89 Nm° at 1 hour) at yield and failure. Longer cure time significantly increased angular deformation of rods at failure; however, water temperature did not. In general, the strongest casts were produced with warm water and after curing for 24 hours. Conclusion: Fiberglass casts continued to gain strength for at least 24 hours. Use of warm water increased the rate of curing, resulting in stronger constructs at earlier time points. Clinical significance: Use of warm water is recommended to initiate fiberglass cast curing, especially if the casted limb will be loaded soon after cast application.

Original languageEnglish (US)
Pages (from-to)809-816
Number of pages8
JournalVeterinary Surgery
Volume47
Issue number6
DOIs
StatePublished - Aug 1 2018

Fingerprint

casts (medical)
Surgical Casts
plasmid curing
water temperature
curing (nonfood products)
Temperature
Water
water
fiberglass
energy
meters (equipment)
rubber
analysis of variance
experimental design
Rubber
Analysis of Variance
Extremities
Prospective Studies

ASJC Scopus subject areas

  • veterinary(all)

Cite this

Evaluation of the effects of initial water temperature and curing time on fiberglass cast strength. / Pérez-Nogués, Marcos; Dechant, Julie E; Garcia-Nolen, Tanya; Stover, Susan M.

In: Veterinary Surgery, Vol. 47, No. 6, 01.08.2018, p. 809-816.

Research output: Contribution to journalArticle

@article{1ab89d36854e438881f2fa2a9bbec6b2,
title = "Evaluation of the effects of initial water temperature and curing time on fiberglass cast strength",
abstract = "Objective: To determine the effects of water temperature and cure time on cast strength. Study design: Prospective randomized experimental study. Methods: Two water temperatures were tested, 23°C (cold) and 42°C (warm). Cast constructs were made of 4-inch fiberglass casting material over a rubber mandrel. Each construct was divided into 3 segments and tested in 4-point bending at 0.5, 1, and 24 hours. Stiffness and bending moment, cumulative energy, and angular deformation at yield and failure were recorded and analyzed by using repeated measures ANOVA. Results: Mean time ± SD to complete the construct was 2.2 ± 0.8 and 2.3 ± 0.6 minutes for warm and cold water, respectively. Warm water and longer cure times produced constructs with greater stiffness (23.05 vs 20.88 newton-meter degrees [Nm°] at 0.5 hours), bending moment (121.75 vs 107.31 Nm° at 0.5 hours), and cumulative energy (557.33 vs 428.89 Nm° at 1 hour) at yield and failure. Longer cure time significantly increased angular deformation of rods at failure; however, water temperature did not. In general, the strongest casts were produced with warm water and after curing for 24 hours. Conclusion: Fiberglass casts continued to gain strength for at least 24 hours. Use of warm water increased the rate of curing, resulting in stronger constructs at earlier time points. Clinical significance: Use of warm water is recommended to initiate fiberglass cast curing, especially if the casted limb will be loaded soon after cast application.",
author = "Marcos P{\'e}rez-Nogu{\'e}s and Dechant, {Julie E} and Tanya Garcia-Nolen and Stover, {Susan M}",
year = "2018",
month = "8",
day = "1",
doi = "10.1111/vsu.12927",
language = "English (US)",
volume = "47",
pages = "809--816",
journal = "Veterinary Surgery",
issn = "0161-3499",
publisher = "Wiley-Blackwell",
number = "6",

}

TY - JOUR

T1 - Evaluation of the effects of initial water temperature and curing time on fiberglass cast strength

AU - Pérez-Nogués, Marcos

AU - Dechant, Julie E

AU - Garcia-Nolen, Tanya

AU - Stover, Susan M

PY - 2018/8/1

Y1 - 2018/8/1

N2 - Objective: To determine the effects of water temperature and cure time on cast strength. Study design: Prospective randomized experimental study. Methods: Two water temperatures were tested, 23°C (cold) and 42°C (warm). Cast constructs were made of 4-inch fiberglass casting material over a rubber mandrel. Each construct was divided into 3 segments and tested in 4-point bending at 0.5, 1, and 24 hours. Stiffness and bending moment, cumulative energy, and angular deformation at yield and failure were recorded and analyzed by using repeated measures ANOVA. Results: Mean time ± SD to complete the construct was 2.2 ± 0.8 and 2.3 ± 0.6 minutes for warm and cold water, respectively. Warm water and longer cure times produced constructs with greater stiffness (23.05 vs 20.88 newton-meter degrees [Nm°] at 0.5 hours), bending moment (121.75 vs 107.31 Nm° at 0.5 hours), and cumulative energy (557.33 vs 428.89 Nm° at 1 hour) at yield and failure. Longer cure time significantly increased angular deformation of rods at failure; however, water temperature did not. In general, the strongest casts were produced with warm water and after curing for 24 hours. Conclusion: Fiberglass casts continued to gain strength for at least 24 hours. Use of warm water increased the rate of curing, resulting in stronger constructs at earlier time points. Clinical significance: Use of warm water is recommended to initiate fiberglass cast curing, especially if the casted limb will be loaded soon after cast application.

AB - Objective: To determine the effects of water temperature and cure time on cast strength. Study design: Prospective randomized experimental study. Methods: Two water temperatures were tested, 23°C (cold) and 42°C (warm). Cast constructs were made of 4-inch fiberglass casting material over a rubber mandrel. Each construct was divided into 3 segments and tested in 4-point bending at 0.5, 1, and 24 hours. Stiffness and bending moment, cumulative energy, and angular deformation at yield and failure were recorded and analyzed by using repeated measures ANOVA. Results: Mean time ± SD to complete the construct was 2.2 ± 0.8 and 2.3 ± 0.6 minutes for warm and cold water, respectively. Warm water and longer cure times produced constructs with greater stiffness (23.05 vs 20.88 newton-meter degrees [Nm°] at 0.5 hours), bending moment (121.75 vs 107.31 Nm° at 0.5 hours), and cumulative energy (557.33 vs 428.89 Nm° at 1 hour) at yield and failure. Longer cure time significantly increased angular deformation of rods at failure; however, water temperature did not. In general, the strongest casts were produced with warm water and after curing for 24 hours. Conclusion: Fiberglass casts continued to gain strength for at least 24 hours. Use of warm water increased the rate of curing, resulting in stronger constructs at earlier time points. Clinical significance: Use of warm water is recommended to initiate fiberglass cast curing, especially if the casted limb will be loaded soon after cast application.

UR - http://www.scopus.com/inward/record.url?scp=85052472704&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85052472704&partnerID=8YFLogxK

U2 - 10.1111/vsu.12927

DO - 10.1111/vsu.12927

M3 - Article

VL - 47

SP - 809

EP - 816

JO - Veterinary Surgery

JF - Veterinary Surgery

SN - 0161-3499

IS - 6

ER -