Influence of dentinal adhesives and a prefabricated post on fracture resistance of silver amalgam cores.
Influence of dentinal adhesives and a prefabricated post on fracture resistance of silver amalgam cores.
复制标题
牙本质粘合剂和预制桩对银汞合金芯抗断裂性的影响。
DOI：
10.1016/s0022-3913(97)70201-4
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发表时间：
1997
期刊：
影响因子：
--
通讯作者：
Sarkar,NK
中科院分区：
文献类型：
--
作者：
Donald,HL;Jeansonne,BG;Gardiner,DM;Sarkar,NK
目的用于根管治疗的银汞合金核的失败被归因于桩的使用。据报道，粘结剂的使用可以提高银汞合金修复体的强度。本研究的目的是测试两种粘结剂对银汞合金桩核与非银汞合金桩核抗折裂性能的影响。材料与方法用银汞合金修复下颌磨牙，其中一种粘接剂和/或锥形预制桩。结果两种粘结剂与银汞合金复合使用均可显著提高粘接剂的抗折强度，且两种粘结剂效果均不明显。结论银汞合金修复后的下颌磨牙在使用粘结剂的情况下，抗折能力最强。J Prosthet Dent 1997；77：17-22。
PurposeFailures of silver amalgam cores for endodontically treated teeth have been attributed to the use of posts. The use of adhesive agents has been reported to improve the strength of silver amalgam restorations. The purpose of this study was to test the effects of two adhesive agents on the fracture resistance of silver amalgam cores with and without a post.Material and MethodsSixty mandibular molars were restored with the use of silver amalgam, with or without one of the adhesive agents and/or a tapered prefabricated post. A universal testing machine, with a constant load rate of 0.5 mm/minute, was used to determine the force in kilograms at failure.ResultsThe use of either adhesive agent with silver amalgam significantly increased the force at failure, and neither adhesive agent was significantly better than the other. Silver amalgam with a post and without an adhesive agent had the least resistance to fracture.ConclusionsThe results indicated that endodontically treated mandibular molars restored with silver amalgam are more resistant to fracture when an adhesive agent is used. (J Prosthet Dent 1997;77:17-22.)