不同桩核冠向微渗漏的比较研究

doi:10.3877/cma.j.issn.1674-1366.2009-04-008

中华口腔医学研究杂志(电子版) ›› 2009, Vol. 3 ›› Issue (04) : 398 -402. doi: 10.3877/cma.j.issn.1674-1366.2009-04-008

基础研究

不同桩核冠向微渗漏的比较研究

朱文军¹^,^†(

), 胡湘权², 赵克¹

1.510055 广州，中山大学光华口腔医学院·附属口腔医院·口腔医学研究所
2.510055 广州，广州军区机关门诊部口腔科

收稿日期:2009-03-15 出版日期:2009-08-01
通信作者: 朱文军
基金资助:
广东省医学科研基金（B2007078）

In vitro study of coronal microleakage of four kinds of post and core materials

Wenjun ZHU^†^,¹(), Xiang-quan HU¹, Ke ZHAO¹

1.Guanghua School of Stomatology， Institute of Stomatological Research， Sun Yat-sen University， Guangzhou 510055， China

Received:2009-03-15 Published:2009-08-01
Corresponding author: Wenjun ZHU

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目的

研究铸造镍铬合金桩核、黏接银汞桩核、传统银汞桩核和纤维树脂桩核的冠向微渗漏情况，为临床桩核的选择提供依据。

方法

选择60 颗新拔除的人上颌磨牙，随机分为6 组，其中4 组分别制作铸造镍铬合金桩核、黏接银汞桩核、传统银汞桩核和纤维树脂桩核，另2 组分别为阳性和阴性对照，然后浸入印度墨水中1 周，评价不同桩核的冠向微渗漏情况。

结果

4 个实验组微渗漏明显小于阳性对照组（P ＜0.05）；纤维树脂桩核组和黏接银汞桩核组微渗漏明显小于传统银汞桩核组和铸造镍铬合金桩核组（P ＜0.05）。

结论

各种桩核修复都可在一定程度上减小微渗漏，其中黏接银汞桩核和纤维树脂桩核修复更为有效。

关键词: 银汞桩核技术, 纤维树脂桩核, 冠向微渗漏

Objective

The aim of this study was to compare the coronal microleakage of casting nickel chromium alloy post and cores， bonded amalgam cores， conventional amalgam cores and fiber post reinforced composite resin cores on endodotically treated molars.

Methods

Sixty extracted human maxillary molars were endodontically treated and assigned to six groups randomly. Four groups were prepared for casting nickel chromium alloy post and cores， bonded amalgam cores， conventional amalgam cores and fiber post reinforced composite resin cores respectively. The other two groups served as positive control and negative control. The teeth were stored in India ink for 1 week. The coronal microleakage of ink penetration was assessed with a coded scoring system.

Results

The four experimental groups showed significantly less microleakage than the positive control （P ＜0.05）. The bonded amalgam cores and fiber post reinforced composite resin cores demonstrated significantly less microleakage than the casting nickel chromium alloy and conventional amalgam cores （P ＜0.05）.

Conclusion

All kinds of post and cores can reduce the microleakage of endodotically treated molars. Bonded amalgam and fiber post reinforced composite resin core are more preferable.

Key words: Amalgam core techniques, Fiber post reinforced composite resin core, Coronal microleakage

表1 各组冠向微渗漏的情况比较

组别	例数	染色记分
组别	例数	0	1	2	3
A组	10	0	1	8	1
B组	10	1	9	0	0
C组	10	0	0	7	3
D组	10	1	9	0	0
E组	10	0	0	1	9
F组	10	10	0	0	0

表1 各组冠向微渗漏的情况比较

组别	例数	染色记分
组别	例数	0	1	2	3
A组	10	0	1	8	1
B组	10	1	9	0	0
C组	10	0	0	7	3
D组	10	1	9	0	0
E组	10	0	0	1	9
F组	10	10	0	0	0

1	Forberger N， Göhring TN. Influence of the type of post and core on in vitro marginal continuity， fracture resistance， and fracture mode of lithia disilicate-based all-ceramic crowns. J Prosthet Dent， 2008，100（4）：264-273.
2	Aykent F， Kalkan M， Yucel MT， et al. Effect of dentin bonding and ferrule preparation on the fracture strength of crowned teeth restored with dowels and amalgam cores. J Prosthet Dent， 2006，95（4）：297-301.
3	Mannocci F， Qualtrough AJ， Worthington HV， et al. Randomized clinical comparison of endodontically treated teeth restored with amalgam or with fiber posts and resin composite： five-year results. Oper Dent， 2005，30（1）：9-15.
4	Pappen AF， Bravo M， Gonzalez-Lopez S， et al. An in vitro study of coronal leakage after intraradicular preparation of cast-dowel space. J Prosthet Dent， 2005，94（3）：214-218.
5	Ravanshad S， Ghoreeshi N. An in vitro study of coronal microleakage in endodontically-treated teeth restored with posts. Aust Endod J， 2003，29（3）：128-133.
6	Torabinejad M， Ung B， Kettering JD. In vitro bacterial penetration of coronally unsealed endodontically treated teeth. J Endod， 1990，16（12）：566-569.
7	Demirel F，Saygili G，Sahmali S. Microleakage of endodontically treated teeth restored with prefabricated posts and tooth-colored restorative materials. Int J Periodontics Restorative Dent， 2005，25（1）：73-79.
8	Almeida JF， Gomes BP， Ferraz CC， et al. Filling of artificial lateral canals and microleakage and flow of five endodontic sealers. Int Endod J， 2007，40（9）：692-699.
9	Howdle MD， Fox K， Youngson CC. An in vitro study of coronal microleakage around bonded amalgam coronal-radicular cores in endodontically treated molar teeth. Quintessence Int， 2002，33（1）：22-29.
10	Jung SH， Min KS， Chang HS， et al. Microleakage and fracture patterns of teeth restored with different posts under dynamic loading. J Prosthet Dent， 2007，98（4）：270-276.
11	Usumez A， Cobankara FK， Ozturk N， et al. Microleakage of endodontically treated teeth with different dowel systems. J Prosthet Dent，2004，92（2）：163-169.

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