Abstract:
AIM:Characterization and assessment of the hydration reaction of mineral trioxide aggregate (MTA) Plus exposed to different environmental conditions. METHODOLOGY:The specific surface area, surface morphology and characterization of un-hydrated MTA Plus (Avalon Biomed Inc. Bradenton, FL, USA) were investigated. The specific surface area was compared with that of ProRoot MTA (Dentsply International, Tulsa Dental Specialties, Johnson City, TN, USA). The reaction rate was determined using calorimetry, and the hydrated cement was assessed for setting time (determined using an indentation technique), and the set material was characterized using X-ray diffraction analysis, scanning electron microscopy and X-ray energy-dispersive analysis. Atomic ratio plots were drawn to establish the relationship of the hydration products. Three different environmental conditions namely dry or immersed in either water or Hank's balanced salt solution (HBSS) were used. RESULTS:Mineral trioxide aggregate Plus had a higher specific surface area than ProRoot MTA. The hydration reaction was exothermic. The setting time of MTA Plus was retarded when in contact with fluids (P < 0.001). The setting time was longer when MTA Plus was in contact with HBSS than when in contact with water (P < 0.001). Hydration of MTA Plus resulted in the formation of calcium silicate hydrate, calcium hydroxide, ettringite and monosulfate phases. Bismuth was incorporated in the calcium silicate hydrate structure. The hydration of the core material was not affected by contact with the different solutions but the periphery exhibited microcracking, leaching of calcium hydroxide, partial decalcification of calcium silicate hydrate, inhibition of hydration in contact with the physiological solution. CONCLUSIONS:The novel MTA Plus was finer than ProRoot MTA but had a similar chemical composition. MTA Plus in direct contact with fluids exhibited partial decalcification of calcium silicate hydrate in contact with the solution, microcracking and leaching of calcium hydroxide. Interaction with a physiological solution resulted in inhibition of hydration.
journal_name
Int Endod Jjournal_title
International endodontic journalauthors
Camilleri J,Formosa L,Damidot Ddoi
10.1111/iej.12068subject
Has Abstractpub_date
2013-09-01 00:00:00pages
831-40issue
9eissn
0143-2885issn
1365-2591journal_volume
46pub_type
杂志文章abstract:AIM:To investigate the presence of resolvins E1 (RvE1) and D2 (RvD2) in teeth with primary endodontic infections and apical periodontitis, and to assess the influence of calcium hydroxide medication [Ca(OH)2 ], in association with 2% chlorhexidine gel (2% CHX gel), and N-acetylcysteine (NAC) on the levels of RvE1 and R...
journal_title:International endodontic journal
pub_type: 杂志文章
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journal_title:International endodontic journal
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更新日期:2009-10-01 00:00:00
abstract:BACKGROUND:Stem/progenitor cell-mediated pulpal regeneration could represent a promising therapeutic alternative in the field of clinical endodontics. AIM:The present study aimed to systematically assess and meta-analyse dental pulpal tissue regeneration, pulpal vitality and apical healing after the transplantation of...
journal_title:International endodontic journal
pub_type: 杂志文章,meta分析
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更新日期:2019-11-01 00:00:00
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journal_title:International endodontic journal
pub_type: 杂志文章
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更新日期:2012-10-01 00:00:00
abstract::The short-term tissue responses to two potential root-end filling materials, a light-cured glass ionomer cement (Vitrebond) and a reinforced zinc oxide-eugenol cement (Kalzinol), were compared with that to amalgam using a previously devised experimental model. In 24 premolar teeth of beagle dogs (47 roots), a collecti...
journal_title:International endodontic journal
pub_type: 杂志文章
doi:10.1046/j.1365-2591.1997.00077.x
更新日期:1997-07-01 00:00:00
abstract::Teflon tubes containing freshly mixed, polymerized Hydron root canal filling material, fully set AH26 or Teflon were implanted into the mandible of guinea pigs and assessed histologically at 2 days, 1, 2, 4, 12 and 26 weeks. None of the materials tested elicited signs of overt or significant tissue damage, and polymer...
journal_title:International endodontic journal
pub_type: 杂志文章
doi:10.1111/j.1365-2591.1992.tb00749.x
更新日期:1992-07-01 00:00:00
abstract:AIM:To establish and characterize different types of fibroblastic cell lines derived from dental pulp tissue. METHODOLOGY:Human dental pulp tissue-derived cells were transfected with SV40 large T antigen by Lipofectamine transfection method. Geneticin (G418)-resistant cells were selected and different cell lines were ...
journal_title:International endodontic journal
pub_type: 杂志文章
doi:10.1111/j.1365-2591.2008.01409.x
更新日期:2008-07-01 00:00:00
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journal_title:International endodontic journal
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doi:10.1111/j.1365-2591.1993.tb00549.x
更新日期:1993-03-01 00:00:00
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更新日期:2014-09-01 00:00:00
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pub_type: 杂志文章
doi:10.1111/iej.13407
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journal_title:International endodontic journal
pub_type: 杂志文章
doi:10.1111/j.1365-2591.1993.tb00562.x
更新日期:1993-07-01 00:00:00
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journal_title:International endodontic journal
pub_type: 杂志文章
doi:10.1111/j.1365-2591.1995.tb00298.x
更新日期:1995-07-01 00:00:00
abstract:AIM:To detect and quantify dentine sialoprotein (DSP) in the gingival crevicular fluid (GCF) of luxated teeth. METHODOLOGY:Eighteen subjects were enroled and distributed as follows. Group I (n = 6, positive control): subjects with primary second molar teeth undergoing physiological root resorption. Group II (n = 6, ne...
journal_title:International endodontic journal
pub_type: 杂志文章
doi:10.1111/iej.12001
更新日期:2013-04-01 00:00:00
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更新日期:2019-07-01 00:00:00
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journal_title:International endodontic journal
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1046/j.1365-2591.2001.00357.x
更新日期:2001-03-01 00:00:00
abstract:AIM:To evaluate and observe the cellular reactions that occur during the interaction/integration between 2-hydroxyethyl methacrylate/host tissue/microbial environment, in a co-culture of human gingival fibroblasts (HGF) and Streptococcus mitis strains. METHODOLOGY:Streptococcus mitis were cultured with strains in the ...
journal_title:International endodontic journal
pub_type: 杂志文章
doi:10.1111/j.1365-2591.2011.01935.x
更新日期:2011-12-01 00:00:00
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journal_title:International endodontic journal
pub_type: 杂志文章
doi:10.1046/j.1365-2591.1997.00107.x
更新日期:1997-11-01 00:00:00
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journal_title:International endodontic journal
pub_type: 临床试验,杂志文章,随机对照试验
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更新日期:2000-01-01 00:00:00
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journal_title:International endodontic journal
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更新日期:2016-04-01 00:00:00
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journal_title:International endodontic journal
pub_type: 杂志文章
doi:10.1111/j.1365-2591.2004.00755.x
更新日期:2004-06-01 00:00:00
abstract::Four hundred and fifty-five extracted mandibular incisor and 340 extracted mandibular premolar teeth were radiographed to assess the incidence of twin canals as visualized on radiographs taken in the mesio-distal direction. The ability to detect the presence of these twin canals by viewing radiographs taken in the sta...
journal_title:International endodontic journal
pub_type: 杂志文章
doi:10.1111/j.1365-2591.1991.tb00808.x
更新日期:1991-03-01 00:00:00
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journal_title:International endodontic journal
pub_type: 杂志文章
doi:10.1046/j.1365-2591.2002.00457.x
更新日期:2002-01-01 00:00:00
abstract:AIM:To investigate an immortalized murine odontoblast cell line as a potential alternative for experimental studies on dentinogenesis. METHODOLOGY:The MO6-G3 cell line was investigated morphologically over 3, 7, 11 and 42 days of culture, using histochemical localization of dentine sialoprotein (DSP), alkaline phospha...
journal_title:International endodontic journal
pub_type: 杂志文章
doi:10.1111/j.1365-2591.2006.01089.x
更新日期:2006-06-01 00:00:00
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journal_title:International endodontic journal
pub_type: 杂志文章
doi:10.1111/iej.13027
更新日期:2019-04-01 00:00:00
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journal_title:International endodontic journal
pub_type: 杂志文章
doi:10.1111/iej.13209
更新日期:2020-01-01 00:00:00
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journal_title:International endodontic journal
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1046/j.1365-2591.2003.00682.x
更新日期:2003-08-01 00:00:00
abstract::Sodium hypochlorite (NaOCl), is the most popular irrigation solution used in root canal treatment but it is known to be an irritant to vital tissues. There have been many case reports dealing with toxic effects of this material. Although the allergic potential of NaOCl has been described in the medical literature, onl...
journal_title:International endodontic journal
pub_type: 杂志文章
doi:10.1111/j.1365-2591.1994.tb00247.x
更新日期:1994-05-01 00:00:00
abstract:AIM:To evaluate the bond strength of self-adhesive resin cements (SARCs) to glass fibre posts with or without a silane coupling agent. METHODOLOGY:The SARCs tested were: Maxcem Elite (MXE; Kerr), RelyX Unicem clicker (UNI; 3M ESPE), seT capsule (SET; SDI), and SmartCem 2 (SC2; Dentsply Caulk). The conventional cement ...
journal_title:International endodontic journal
pub_type: 杂志文章
doi:10.1111/j.1365-2591.2011.01883.x
更新日期:2011-08-01 00:00:00
abstract:AIM:To evaluate the resistance to ex vivo bacterial leakage over a 40-day period of root canal fillings with five new root canal sealers: RC Sealer, Epiphany, EndoREZ, GuttaFlow and Acroseal, compared with Apexit, AH Plus and RoekoSeal. METHODOLOGY:One hundred and forty-four single rooted human teeth were divided rand...
journal_title:International endodontic journal
pub_type: 杂志文章
doi:10.1111/j.1365-2591.2008.01509.x
更新日期:2009-04-01 00:00:00