Abstract:
:A light-cured ionomer cement was investigated as a retrograde root seal, without a retrograde cavity. This was compared with the material used in a retrograde cavity, and with a conventional glass ionomer cement, as a seal. The adaptation and sealing ability of the test materials were assessed using a confocal optical microscope with a fluorescent dye. The root canals of 40 extracted human single-rooted teeth were prepared and filled with gutta-percha and sealer. All the teeth were subsequently apicected, then divided into four equal groups. In one group, a retrograde cavity was prepared, and the light-cured glass ionomer cement was placed as a retrograde root filling. No retrograde cavities were prepared in the three remaining groups. The light-cured glass ionomer cement was applied directly onto the apicected root face. Two different thicknesses of light-cured glass ionomer cement were tested, a thin layer (approximately 1 mm) in one group, and a thicker layer (> 1 mm) in another group. A conventional glass ionomer cement was used in the last group, and applied directly onto the root face in a single thickness (approximately 1 mm). In the group where the light-cured glass ionomer cement was used in a retrograde cavity, the material was often well adapted to one cavity wall, but gaps were found on the opposite wall. The light-cured and conventional glass ionomer cement retrograde root seals were well adapted to the root face, regardless of the thickness of material used. The thinly applied (approximately 1 mm) light-cured glass ionomer cement retrograde root seals permitted the least leakage.(ABSTRACT TRUNCATED AT 250 WORDS)
journal_name
Int Endod Jjournal_title
International endodontic journalauthors
Chong BS,Pitt Ford TR,Watson TFdoi
10.1111/j.1365-2591.1993.tb00562.xsubject
Has Abstractpub_date
1993-07-01 00:00:00pages
218-24issue
4eissn
0143-2885issn
1365-2591journal_volume
26pub_type
杂志文章abstract:AIM:This study aimed to examine the fracture resistance of teeth restored with cast post and partial cores supported by different heights of coronal tooth structure. METHODOLOGY:Four specimen groups were prepared. Group A was the control and consisted of 10 single-rooted teeth restored with post and cores cemented in ...
journal_title:International endodontic journal
pub_type: 杂志文章
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更新日期:2002-11-01 00:00:00
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journal_title:International endodontic journal
pub_type: 杂志文章,随机对照试验
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更新日期:2012-08-01 00:00:00
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更新日期:2019-04-01 00:00:00
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journal_title:International endodontic journal
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doi:10.1111/iej.12765
更新日期:2018-05-01 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:1994-01-01 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:2018-09-01 00:00:00
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更新日期:2014-11-01 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:2002-10-01 00:00:00
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pub_type: 杂志文章
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更新日期:2005-10-01 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:2015-04-01 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:2015-03-01 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:2019-06-01 00:00:00
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journal_title:International endodontic journal
pub_type: 杂志文章
doi:10.1046/j.1365-2591.2003.00673.x
更新日期:2003-06-01 00:00:00
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journal_title:International endodontic journal
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更新日期:2015-02-01 00:00:00
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journal_title:International endodontic journal
pub_type: 杂志文章,随机对照试验
doi:10.1111/j.1365-2591.2007.01234.x
更新日期:2007-05-01 00:00:00
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journal_title:International endodontic journal
pub_type: 杂志文章
doi:10.1111/iej.12197
更新日期:2014-07-01 00:00:00
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更新日期:2006-06-01 00:00:00
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更新日期:2015-02-01 00:00:00
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更新日期:2009-11-01 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:2003-11-01 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:2019-04-01 00:00:00
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journal_title:International endodontic journal
pub_type: 杂志文章
doi:10.1111/j.1365-2591.2008.01409.x
更新日期:2008-07-01 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:2018-12-01 00:00:00
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pub_type: 杂志文章
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更新日期:2009-04-01 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:2005-09-01 00:00:00
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journal_title:International endodontic journal
pub_type: 杂志文章,多中心研究
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更新日期:2002-05-01 00:00:00
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journal_title:International endodontic journal
pub_type: 杂志文章
doi:10.1111/iej.13418
更新日期:2020-09-24 00:00:00
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journal_title:International endodontic journal
pub_type: 杂志文章
doi:10.1111/j.0143-2885.2004.00780.x
更新日期:2004-03-01 00:00:00