Reducing apical voids for intra-canal sealer injection using a modified passive deflation needle

Chen, Zhuo; Yang, Yanling; Fan, Wei

doi:10.1007/s10266-023-00893-y

Odontology

2024

DOI: 10.1007/s10266-023-00893-y

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Reducing apical voids for intra-canal sealer injection using a modified passive deflation needle

Zhuo Chen,

Yanling Yang,

Wei Fan

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Micro-computed tomographic evaluation on the quality of single-cone obturation using a modified passive-deflation sealer injection needle: an in vitro study

Chen,

Yang

et al. 2024

BMC Oral Health

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Objectives This study aimed to design a modified passive-deflation sealer injection needle and investigate its ability to improve obturation quality of single-cone technique through assessing the distribution of voids in root canals using micro-computed tomography (micro-CT). Materials and methods Forty-eight mandibular incisors were divided into eight groups (n = 6), according to the taper of root canal preparation (0.06 or 0.04), the needle used for sealer injection (modified or commercial iRoot SP injection needle), and the obturation method (iRoot SP sealer-only or single-cone obturation). After obturation, each specimen was scanned by micro-CT. The volumetric percentage and distribution of all voids were first analyzed and compared among groups, then the open and closed voids were separately analyzed and compared among single-cone obturation groups. Results Compared to commercial needle groups, modified needle groups showed much less voids, especially in the apical root canal part (P < 0.05). Besides, the modified needle groups produced much less open voids than commercial needle groups despite the root canal taper (P < 0.05). Conclusions The modified passive deflation sealer injection needle could effectively improve the quality of single-cone obturation through reducing intra-canal voids, especially open voids throughout the root canal, thus might possibly be developed as an effective intra-canal sealer delivering instrument.

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Micro-computed tomographic evaluation on the quality of single-cone obturation using a modified passive-deflation sealer injection needle: an in vitro study

Chen,

Yang

et al. 2024

BMC Oral Health

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show abstract

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Reducing apical voids for intra-canal sealer injection using a modified passive deflation needle

Cited by 1 publication

References 41 publications

Micro-computed tomographic evaluation on the quality of single-cone obturation using a modified passive-deflation sealer injection needle: an in vitro study

Micro-computed tomographic evaluation on the quality of single-cone obturation using a modified passive-deflation sealer injection needle: an in vitro study

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