Comparison of particle morphology between commercial- and research-grade calcium hydroxide in endodontics

Takashi Komabayashi, Chul Ahn, Robert Spears, Qiang Zhu

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Ca(OH)2 aqueous slurry is widely used as an inter-appointment antimicrobial dressing in root canal treatment. The aim of this study was to quantify the particle size and shape of commercial-grade UltraCal XS (UC) and to compare it with that of research-grade Ca(OH)2 (RG) using a flow particle image analyzer (FPIA). The morphology and penetration inside the dentin tubules of the UC and RG particles were examined using a scanning electron microscope (SEM). UC and RG (10 mg) were mixed with 15 mL of alcohol, and were sonicated. Five milliliters of the dispersion was subjected to FPIA, and particle length, width, perimeter and aspect ratio were analyzed. In addition, UC paste and RG aqueous slurry were agitated on dentin discs and were prepared for SEM examination. There were significant differences between UC and RG with regard to the frequency of different length groups (P < 0.0001). UC contained smaller particles than RG (P < 0.0001). Under SEM, the agitated UC and RG particles occluded the opening of dentin tubules and penetrated inside the dentin tubules. The size of UC particles is smaller than those of RG. Both UC and RG particles were able to penetrate into open dentin tubules.

Original languageEnglish (US)
Pages (from-to)195-199
Number of pages5
JournalJournal of oral science
Volume56
Issue number3
StatePublished - Sep 1 2014

Fingerprint

Calcium Hydroxide
Endodontics
Dentin
Research
Electrons
UltraCal XS
Dental Pulp Cavity
Bandages
Ointments
Particle Size
Appointments and Schedules
Alcohols

ASJC Scopus subject areas

  • Dentistry(all)

Cite this

Comparison of particle morphology between commercial- and research-grade calcium hydroxide in endodontics. / Komabayashi, Takashi; Ahn, Chul; Spears, Robert; Zhu, Qiang.

In: Journal of oral science, Vol. 56, No. 3, 01.09.2014, p. 195-199.

Research output: Contribution to journalArticle

Komabayashi, Takashi ; Ahn, Chul ; Spears, Robert ; Zhu, Qiang. / Comparison of particle morphology between commercial- and research-grade calcium hydroxide in endodontics. In: Journal of oral science. 2014 ; Vol. 56, No. 3. pp. 195-199.
@article{ed7e341a7c2f45569cae31131f02ca6c,
title = "Comparison of particle morphology between commercial- and research-grade calcium hydroxide in endodontics",
abstract = "Ca(OH)2 aqueous slurry is widely used as an inter-appointment antimicrobial dressing in root canal treatment. The aim of this study was to quantify the particle size and shape of commercial-grade UltraCal XS (UC) and to compare it with that of research-grade Ca(OH)2 (RG) using a flow particle image analyzer (FPIA). The morphology and penetration inside the dentin tubules of the UC and RG particles were examined using a scanning electron microscope (SEM). UC and RG (10 mg) were mixed with 15 mL of alcohol, and were sonicated. Five milliliters of the dispersion was subjected to FPIA, and particle length, width, perimeter and aspect ratio were analyzed. In addition, UC paste and RG aqueous slurry were agitated on dentin discs and were prepared for SEM examination. There were significant differences between UC and RG with regard to the frequency of different length groups (P < 0.0001). UC contained smaller particles than RG (P < 0.0001). Under SEM, the agitated UC and RG particles occluded the opening of dentin tubules and penetrated inside the dentin tubules. The size of UC particles is smaller than those of RG. Both UC and RG particles were able to penetrate into open dentin tubules.",
author = "Takashi Komabayashi and Chul Ahn and Robert Spears and Qiang Zhu",
year = "2014",
month = "9",
day = "1",
language = "English (US)",
volume = "56",
pages = "195--199",
journal = "Journal of oral science",
issn = "1343-4934",
publisher = "Nihon University",
number = "3",

}

TY - JOUR

T1 - Comparison of particle morphology between commercial- and research-grade calcium hydroxide in endodontics

AU - Komabayashi, Takashi

AU - Ahn, Chul

AU - Spears, Robert

AU - Zhu, Qiang

PY - 2014/9/1

Y1 - 2014/9/1

N2 - Ca(OH)2 aqueous slurry is widely used as an inter-appointment antimicrobial dressing in root canal treatment. The aim of this study was to quantify the particle size and shape of commercial-grade UltraCal XS (UC) and to compare it with that of research-grade Ca(OH)2 (RG) using a flow particle image analyzer (FPIA). The morphology and penetration inside the dentin tubules of the UC and RG particles were examined using a scanning electron microscope (SEM). UC and RG (10 mg) were mixed with 15 mL of alcohol, and were sonicated. Five milliliters of the dispersion was subjected to FPIA, and particle length, width, perimeter and aspect ratio were analyzed. In addition, UC paste and RG aqueous slurry were agitated on dentin discs and were prepared for SEM examination. There were significant differences between UC and RG with regard to the frequency of different length groups (P < 0.0001). UC contained smaller particles than RG (P < 0.0001). Under SEM, the agitated UC and RG particles occluded the opening of dentin tubules and penetrated inside the dentin tubules. The size of UC particles is smaller than those of RG. Both UC and RG particles were able to penetrate into open dentin tubules.

AB - Ca(OH)2 aqueous slurry is widely used as an inter-appointment antimicrobial dressing in root canal treatment. The aim of this study was to quantify the particle size and shape of commercial-grade UltraCal XS (UC) and to compare it with that of research-grade Ca(OH)2 (RG) using a flow particle image analyzer (FPIA). The morphology and penetration inside the dentin tubules of the UC and RG particles were examined using a scanning electron microscope (SEM). UC and RG (10 mg) were mixed with 15 mL of alcohol, and were sonicated. Five milliliters of the dispersion was subjected to FPIA, and particle length, width, perimeter and aspect ratio were analyzed. In addition, UC paste and RG aqueous slurry were agitated on dentin discs and were prepared for SEM examination. There were significant differences between UC and RG with regard to the frequency of different length groups (P < 0.0001). UC contained smaller particles than RG (P < 0.0001). Under SEM, the agitated UC and RG particles occluded the opening of dentin tubules and penetrated inside the dentin tubules. The size of UC particles is smaller than those of RG. Both UC and RG particles were able to penetrate into open dentin tubules.

UR - http://www.scopus.com/inward/record.url?scp=85017313348&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85017313348&partnerID=8YFLogxK

M3 - Article

VL - 56

SP - 195

EP - 199

JO - Journal of oral science

JF - Journal of oral science

SN - 1343-4934

IS - 3

ER -