Abstract:
INTRODUCTION:The aim of this study was to assess temperature changes in conventional gutta-percha, thermoplastic gutta-percha, and Resilon cones by using thermomechanical compaction technique. METHODS:The root canals of extracted human teeth were placed in resin blocks and sectioned. After root canal preparation, cavities perforating the lingual wall were prepared at 4 and 8 mm from the apex, and K-type thermocouples coupled to a digital temperature meter were inserted until reaching the root canal. After placement of the main cone and accessory cones of each material assessed, a #45 thermomechanical compactor was used at 10,000 rpm. Data were analyzed by using analysis of variance and Tukey test for paired comparisons (P < .05). RESULTS:A significant difference was observed between initial and maximum temperatures (mean increase, 5 degrees C-8 degrees C) with all materials (P < .05). The 3 materials showed similar temperature changes (P > .05). Changes in the apical third were higher when compared with the cervical third (P < .05). CONCLUSIONS:Our results suggest that gutta-percha and Resilon present similar temperature changes during thermomechanical compaction.
journal_name
J Endodjournal_title
Journal of endodonticsauthors
Sant'Anna-Júnior A,Tanomaru-Filho M,Hungaro Duarte MA,Santos Nunes Reis JM,Guerreiro-Tanomaru JMdoi
10.1016/j.joen.2009.03.009subject
Has Abstractpub_date
2009-06-01 00:00:00pages
879-82issue
6eissn
0099-2399issn
1878-3554pii
S0099-2399(09)00198-8journal_volume
35pub_type
杂志文章abstract::In this study, cell reaction after exposure to several dental cements was determined using a dentin barrier test device. The reaction of mouse fibroblasts grown on the "pulpal" side of a bovine dentin disk was determined after exposure to dental cements applied on the "cavity" side of the disk. For pretreatment, denti...
journal_title:Journal of endodontics
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更新日期:1996-03-01 00:00:00
abstract:INTRODUCTION:Pain present 6 months after root canal treatment (RCT) may be of odontogenic or nonodontogenic origin. This is important because treatments and prognoses are different; therefore, the aim of this study was to provide specific diagnoses of patients reporting pain 6 months after receiving initial orthograde ...
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更新日期:1996-10-01 00:00:00
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更新日期:2018-06-01 00:00:00
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更新日期:2015-09-01 00:00:00
abstract::The biocompatibility and apical microleakage of tricalcium phosphate based Sankin Apatite (SA) Type I, II, and III root canal sealers were investigated. Teflon tubes containing freshly mixed test materials were implanted in the subcutaneous tissue of mice. The observation periods were 24 h, 7, and 30 days, after which...
journal_title:Journal of endodontics
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更新日期:1997-02-01 00:00:00
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journal_title:Journal of endodontics
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更新日期:2015-02-01 00:00:00
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journal_title:Journal of endodontics
pub_type: 杂志文章,随机对照试验
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更新日期:2010-11-01 00:00:00
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更新日期:1999-10-01 00:00:00
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journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1097/00004770-200302000-00007
更新日期:2003-02-01 00:00:00
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journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2009.09.016
更新日期:2010-02-01 00:00:00
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journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2015.09.023
更新日期:2016-02-01 00:00:00
abstract::Periapical lesions usually are caused by root canal infection; nevertheless, other pathologies may eventually involve the tooth apex, making the correct diagnosis more difficult. Glandular odontogenic cysts (GOCs) are uncommon and, despite their cystic nature, may present an aggressive behavior and a high recurrence r...
journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2017.06.015
更新日期:2017-11-01 00:00:00
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journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2013.01.011
更新日期:2013-06-01 00:00:00
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journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2014.08.023
更新日期:2014-12-01 00:00:00
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journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2009.01.021
更新日期:2009-05-01 00:00:00
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journal_title:Journal of endodontics
pub_type: 杂志文章,评审
doi:10.1097/00004770-200004000-00016
更新日期:2000-04-01 00:00:00
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pub_type: 杂志文章
doi:10.1016/j.joen.2017.11.016
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pub_type: 杂志文章
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更新日期:2012-09-01 00:00:00
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journal_title:Journal of endodontics
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doi:10.1016/j.joen.2005.12.007
更新日期:2006-06-01 00:00:00
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journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2013.08.030
更新日期:2014-04-01 00:00:00
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journal_title:Journal of endodontics
pub_type: 杂志文章
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更新日期:1998-09-01 00:00:00
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journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2010.06.028
更新日期:2010-10-01 00:00:00
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journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1097/00004770-200403000-00014
更新日期:2004-03-01 00:00:00
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journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/S0099-2399(96)80059-8
更新日期:1996-12-01 00:00:00
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pub_type: 杂志文章
doi:10.1097/00004770-200104000-00015
更新日期:2001-04-01 00:00:00
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journal_title:Journal of endodontics
pub_type: 杂志文章
doi:10.1016/j.joen.2010.11.012
更新日期:2011-02-01 00:00:00
abstract::This report examines three clinical cases of root-filled teeth with primary endodontic lesions. During endodontic surgery, an area of incomplete root bifurcation beginning in the coronal or middle third of the root surface and terminating at or near the apical foramen were observed. The radicular grooves of two teeth ...
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pub_type: 杂志文章
doi:10.1097/00004770-200005000-00012
更新日期:2000-05-01 00:00:00