In vitro study of influence of temporary fillings on coronal microleakage of endodontically treated teeth

doi:10.3877/cma.j.issn.1674-1366.2010.03.010

Abstract

Abstract:

Objective

To evaluate the influence of temporary filling materials， filling methods on coronal microleakage of endodontically treated teeth； to discuss the influence of time on the sealing ability of coronal temporary fillings.

Methods

Extracted teeth were randomly divided after treated with root canal therapy.The samples were stained with 2% methylene blue then made clearing specimens.The specimens were evaluated under stereomicroscope and blindly scored for microleakage.The data collected were then analyzed statistically.

Results

Comparison of various sealing materials： the microleakage scores of ZOE were higher than that of Cavit-G and Caviton in 1 week and 4 weeks； whenever in 2 weeks， the microleakage of Caviton was the lowest of the three.Comparison of filling methods： there was no statistically significant difference between the two filling methods of ZOE group （P ＞0.05）.Directly or indirectly sealing for 1 week， the microleakage scores of Cavit-G and Caviton had no statistically significant difference（P＞0.05）， while there were statistically significant differences when sealing for 2 or 4 weeks （P ＜0.05）.Influence of sealing time： with the proloning of sealing time， the microleakage scores of the three types of materials increased significantly （P ＜0.05）.

Conclusions

Amongst the three materials， Caviton was better than the other two.Usage of cotton pellets increased the coronal microleakage of Cavit-G and Caviton.The optimum time of temporary fillings was 2 weeks for Caviton and Cavit-G， and 1 week for ZOE.

Key words: Temporary filling, Temporary filling materials, Coronal microleakage, Root canal therapy

Yan GAO, Jin-ling YANG, Tao-hong LV, Pei-lin ZHUANG, Jun-qi LING. In vitro study of influence of temporary fillings on coronal microleakage of endodontically treated teeth[J]. Chinese Journal of Stomatological Research(Electronic Edition), 2010, 4(03): 268-274.

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Figures/Tables 6

References 16

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组别	暂封材料	样本数
A 组	ZOE	30
B 组	Cavit-G	30
C 组	Caviton	30
D 组	ZOE、棉球	30
E 组	Cavit-G、棉球	30
F 组	Caviton、棉球	30

组别	暂封材料	样本数
A 组	ZOE	30
B 组	Cavit-G	30
C 组	Caviton	30
D 组	ZOE、棉球	30
E 组	Cavit-G、棉球	30
F 组	Caviton、棉球	30

渗漏到达部位	评分
开髓口-髓室深度1 / 2	1
髓室深度1/2-髓室底	2
达根管口	3
根管口-根管冠1 / 3	4
根管冠1/3-根管中1 / 3	5
根管中1/3-根管下1 / 3	6
超出根尖孔	7

渗漏到达部位	评分
开髓口-髓室深度1 / 2	1
髓室深度1/2-髓室底	2
达根管口	3
根管口-根管冠1 / 3	4
根管冠1/3-根管中1 / 3	5
根管中1/3-根管下1 / 3	6
超出根尖孔	7

组别（n=10）	微渗漏评分（Q）
组别（n=10）	1 周	2 周	4 周
A 组	2.00 ～ 2.70	3.60 ～ 4.18	6.30 ～ 6.00
B 组	1.30 ～ 2.00	3.00 ～ 3.70	4.60 ～ 5.30
C 组	1.23 ～ 1.78	1.93 ～ 2.78	4.70 ～ 5.30
D 组	2.00 ～ 2.70	3.70 ～ 4.78	5.60 ～ 6.40
E 组	1.70 ～ 2.40	3.60 ～ 4.08	4.93 ～ 6.18
F 组	1.30 ～ 2.00	2.30 ～ 3.40	5.00 ～ 6.08

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