Time-based lateral hygroscopic expansion of a water-expandable endodontic obturation point

Anthony Didato, Ashraf A. Eid, Martin D. Levin, Sara Khan, Franklin Chi Meng Tay, Frederick Rueggeberg

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Objectives This study compared the time-based lateral expansion of two sizes and two batches of water-expandable obturation points (CPoint, EndoTechnologies, LLC) and a similar-sized gutta-percha point (control) at various distances from the point apex: 5, 10, and 15 mm. Methods Two batches of sizes 25 and 40 (0.06 taper) CPoints and a single lot of size 40 (0.06 taper) gutta-percha were tested (N = 5). Points were fixed to the bottom of a Petri dish, and digital images of each point location were obtained under 50× magnification, which also captured a calibrated linear scale reticule. After imaging each dry cone location, 10 mL of water was added, and images were obtained at various time points: 20 and 40 min, 1, 2, 3, 4, 5, 6, 7, 8, and 24 h. Between measurements, dishes were stored at 37 C. Side-to-side dimension of each point was determined using imaging software Results No significant differences (p > 0.05) in lateral dimension at each tip distance between batches of similar-sized CPoint samples were found (2-tailed unpaired Student's t-test). Changes in CPoint dimension were significantly higher (p < 0.05) for both sizes at each tip distance after 20 min of water immersion (one-factor repeated-measures ANOVA; Tukey test). Gutta-percha did not significantly change from the dry value during water immersion (p > 0.05). Conclusions When exposed to water, the lateral expansion of a new hydrophilic endodontic obturation point significantly increases in dimension within 20 min, whereas a conventional gutta-percha point does not.

Original languageEnglish (US)
Pages (from-to)796-801
Number of pages6
JournalJournal of Dentistry
Volume41
Issue number9
DOIs
StatePublished - Sep 1 2013

Fingerprint

Root Canal Obturation
Gutta-Percha
Water
Software
Students
CPoint

Keywords

  • CPoint
  • Endodontics
  • Hygroscopic expansion
  • Lateral expansion
  • Obturation

ASJC Scopus subject areas

  • Dentistry(all)

Cite this

Time-based lateral hygroscopic expansion of a water-expandable endodontic obturation point. / Didato, Anthony; Eid, Ashraf A.; Levin, Martin D.; Khan, Sara; Tay, Franklin Chi Meng; Rueggeberg, Frederick.

In: Journal of Dentistry, Vol. 41, No. 9, 01.09.2013, p. 796-801.

Research output: Contribution to journalArticle

Didato, Anthony ; Eid, Ashraf A. ; Levin, Martin D. ; Khan, Sara ; Tay, Franklin Chi Meng ; Rueggeberg, Frederick. / Time-based lateral hygroscopic expansion of a water-expandable endodontic obturation point. In: Journal of Dentistry. 2013 ; Vol. 41, No. 9. pp. 796-801.
@article{5b4fea6c12bb430fbfae507003960d76,
title = "Time-based lateral hygroscopic expansion of a water-expandable endodontic obturation point",
abstract = "Objectives This study compared the time-based lateral expansion of two sizes and two batches of water-expandable obturation points (CPoint, EndoTechnologies, LLC) and a similar-sized gutta-percha point (control) at various distances from the point apex: 5, 10, and 15 mm. Methods Two batches of sizes 25 and 40 (0.06 taper) CPoints and a single lot of size 40 (0.06 taper) gutta-percha were tested (N = 5). Points were fixed to the bottom of a Petri dish, and digital images of each point location were obtained under 50× magnification, which also captured a calibrated linear scale reticule. After imaging each dry cone location, 10 mL of water was added, and images were obtained at various time points: 20 and 40 min, 1, 2, 3, 4, 5, 6, 7, 8, and 24 h. Between measurements, dishes were stored at 37 C. Side-to-side dimension of each point was determined using imaging software Results No significant differences (p > 0.05) in lateral dimension at each tip distance between batches of similar-sized CPoint samples were found (2-tailed unpaired Student's t-test). Changes in CPoint dimension were significantly higher (p < 0.05) for both sizes at each tip distance after 20 min of water immersion (one-factor repeated-measures ANOVA; Tukey test). Gutta-percha did not significantly change from the dry value during water immersion (p > 0.05). Conclusions When exposed to water, the lateral expansion of a new hydrophilic endodontic obturation point significantly increases in dimension within 20 min, whereas a conventional gutta-percha point does not.",
keywords = "CPoint, Endodontics, Hygroscopic expansion, Lateral expansion, Obturation",
author = "Anthony Didato and Eid, {Ashraf A.} and Levin, {Martin D.} and Sara Khan and Tay, {Franklin Chi Meng} and Frederick Rueggeberg",
year = "2013",
month = "9",
day = "1",
doi = "10.1016/j.jdent.2013.06.012",
language = "English (US)",
volume = "41",
pages = "796--801",
journal = "Journal of Dentistry",
issn = "0300-5712",
publisher = "Elsevier BV",
number = "9",

}

TY - JOUR

T1 - Time-based lateral hygroscopic expansion of a water-expandable endodontic obturation point

AU - Didato, Anthony

AU - Eid, Ashraf A.

AU - Levin, Martin D.

AU - Khan, Sara

AU - Tay, Franklin Chi Meng

AU - Rueggeberg, Frederick

PY - 2013/9/1

Y1 - 2013/9/1

N2 - Objectives This study compared the time-based lateral expansion of two sizes and two batches of water-expandable obturation points (CPoint, EndoTechnologies, LLC) and a similar-sized gutta-percha point (control) at various distances from the point apex: 5, 10, and 15 mm. Methods Two batches of sizes 25 and 40 (0.06 taper) CPoints and a single lot of size 40 (0.06 taper) gutta-percha were tested (N = 5). Points were fixed to the bottom of a Petri dish, and digital images of each point location were obtained under 50× magnification, which also captured a calibrated linear scale reticule. After imaging each dry cone location, 10 mL of water was added, and images were obtained at various time points: 20 and 40 min, 1, 2, 3, 4, 5, 6, 7, 8, and 24 h. Between measurements, dishes were stored at 37 C. Side-to-side dimension of each point was determined using imaging software Results No significant differences (p > 0.05) in lateral dimension at each tip distance between batches of similar-sized CPoint samples were found (2-tailed unpaired Student's t-test). Changes in CPoint dimension were significantly higher (p < 0.05) for both sizes at each tip distance after 20 min of water immersion (one-factor repeated-measures ANOVA; Tukey test). Gutta-percha did not significantly change from the dry value during water immersion (p > 0.05). Conclusions When exposed to water, the lateral expansion of a new hydrophilic endodontic obturation point significantly increases in dimension within 20 min, whereas a conventional gutta-percha point does not.

AB - Objectives This study compared the time-based lateral expansion of two sizes and two batches of water-expandable obturation points (CPoint, EndoTechnologies, LLC) and a similar-sized gutta-percha point (control) at various distances from the point apex: 5, 10, and 15 mm. Methods Two batches of sizes 25 and 40 (0.06 taper) CPoints and a single lot of size 40 (0.06 taper) gutta-percha were tested (N = 5). Points were fixed to the bottom of a Petri dish, and digital images of each point location were obtained under 50× magnification, which also captured a calibrated linear scale reticule. After imaging each dry cone location, 10 mL of water was added, and images were obtained at various time points: 20 and 40 min, 1, 2, 3, 4, 5, 6, 7, 8, and 24 h. Between measurements, dishes were stored at 37 C. Side-to-side dimension of each point was determined using imaging software Results No significant differences (p > 0.05) in lateral dimension at each tip distance between batches of similar-sized CPoint samples were found (2-tailed unpaired Student's t-test). Changes in CPoint dimension were significantly higher (p < 0.05) for both sizes at each tip distance after 20 min of water immersion (one-factor repeated-measures ANOVA; Tukey test). Gutta-percha did not significantly change from the dry value during water immersion (p > 0.05). Conclusions When exposed to water, the lateral expansion of a new hydrophilic endodontic obturation point significantly increases in dimension within 20 min, whereas a conventional gutta-percha point does not.

KW - CPoint

KW - Endodontics

KW - Hygroscopic expansion

KW - Lateral expansion

KW - Obturation

UR - http://www.scopus.com/inward/record.url?scp=84882454201&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84882454201&partnerID=8YFLogxK

U2 - 10.1016/j.jdent.2013.06.012

DO - 10.1016/j.jdent.2013.06.012

M3 - Article

VL - 41

SP - 796

EP - 801

JO - Journal of Dentistry

JF - Journal of Dentistry

SN - 0300-5712

IS - 9

ER -