Influence of immediate or delayed post space preparation on the apical sealing ability of different root canal sealers

doi:10.3969/j.issn.2095-4344.2017.10.002

Abstract

Abstract:

BACKGROUND: Apical sealing ability is the key to ensure the long-term curative effect of root canal therapy. The post space preparation exposes some inevitable influence on root canal sealing ability, so how to minimize this effect becomes a hot spot.
OBJECTIVE: To explore the effects of immediate or delayed post space preparation on the apical sealing ability of different root canal sealers.
METHODS: Forty-eight extracted human premolar teeth were obtained, and the tooth crown was cut off. The samples were randomly divided into three groups (n=16 teeth per group). Group A underwent the immediate post space preparation; group B underwent the delayed post space preparation; group C without the post space preparation. Then all groups were subdivided into two groups, and then were filled with the gutta-percha/AH-Plus obturation material (groups A1, B1 and C 1) or the gutta-percha/mineral trioxide aggregate obturation material (groups A2, B2 and C2). The depth of apical dye penetration was measured using pressure-driven system.
RESULTS AND CONCLUSION: There were no significant differences in the apical microleakage between groups A1 and B1, A2 and B2, C1 and C2 (P > 0.05). The apical microleakage in the group A1 was significantly higher than that in the group A2, and the group B1 also showed higher apical microleakage than the group B2 (P < 0.05). Our findings suggest that either immediate or delayed post space preparation exposes little influence on the apical microleakage after root canal filling with gutta-percha/mineral trioxide aggregate obturation material, which exhibits better apical sealing ability than the AH-plus material.

中国组织工程研究杂志出版内容重点：生物材料；骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性；组织工程

Key words: Root Canal Obturation, Root Canal Filling Materials, Tissue Engineering

CLC Number:

R318

Lan Yu-yan, Huang Hai-xia, Fan Li-yuan, Pu Lin, Liu Min, Sun Li-bo. Influence of immediate or delayed post space preparation on the apical sealing ability of different root canal sealers[J]. Chinese Journal of Tissue Engineering Research, 2017, 21(10): 1483-1488.

Figures/Tables 3

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