Evaluation of the filling effects of three root-canal sealers by Micro-CT

doi:10.7518/hxkq.2025.2025009

Abstract

Abstract:

Objective This study aimed to evaluate the filling effects of three biomaterial root-canal sealers [iRoot SP, C-Root SP, and GuttaFlow Bioseal (GFB)] by using Micro-CT. Methods Sixty single-canal detached premolars were selected. After crown amputation, their uniform working length was set at 12 mm and prepared to a 06 taper 30# with M3 nickel-titanium file. The samples were randomly divided into six groups with different sealers and obturation techniques: iRoot SP+single-cone technique (SC), C-Root SP+SC, GFB+SC, iRoot SP+single cone-mediated ultrasonic technique (SU), C-Root SP+SU, and GFB+SU. Samples were scanned by Micro-CT, and the total and segmented filling rates were calculated with Mimics 22.0 software after 3D reconstruction. Results The overall filling rate of the three biomaterial root canal sealers was higher than 90%. The overall and coronal third and middle third segment filling rate of groups iRoot SP+SC, C-Root SP+SC was higher than that of group GFB+SC (P<0.01), with no significant difference between groups iRoot SP+SC and C-Root SP+SC (P>0.05). On the apical third, no significant difference was found among each group (P>0.05). The overall and segment filling rate of groups iRoot SP+SU and C-Root SP+SU was higher than that of GFB+SU (P<0.01), with no significant difference between groups iRoot SP+SU and C-Root SP+SU (P>0.05). The filling rate of the apical 1/3 of group C-Root+SC was lower than that of group C-Root+SU (P<0.01), and the filling rate of the coronal 1/3 of group GFB+SC was higher than that in the GFB+SU (P<0.01). Nevertheless, no significant difference was found in other filling rate of two obturation techniques (P>0.05). Conclusion The overall filling rate of the three biomaterial root-canal sealers using SC and SU are satisfactory. iRoot SP and C-Root SP have similar filling rates, which are significantly higher than that of GFB. C-Root SP combined with SU technique can improve the filling quality of the root apical.

Key words: root canal obturation, root canal sealer, iRoot SP, C-Root SP, GuttaFlow Bioseal, Micro-CT

CLC Number:

R781.05

Huang Rihong, Zeng Xiangni, Jiang Li, Zhang Lixia, Zhu Jingya, He Fei. Evaluation of the filling effects of three root-canal sealers by Micro-CT[J]. West China Journal of Stomatology, 2025, 43(5): 722-727.

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根管封闭剂	n	充填率/%			P值
根管封闭剂	n	根冠1/3	根中1/3	根尖1/3	P值
P值		<0.01	<0.01	0.174
iRoot SP	10	97.84±0.80	97.36±2.17	92.64±5.82	0.052
C-Root SP	10	96.57±2.07	96.74±2.10	92.79±2.89	<0.01
GFB	10	93.87±2.30	92.02±2.80	89.71±4.05	<0.05

根管封闭剂	n	充填率/%			P值
根管封闭剂	n	根冠1/3	根中1/3	根尖1/3	P值
P值		<0.01	<0.01	<0.01
iRoot SP	10	96.75±1.69	97.12±2.16	96.37±4.65	0.941
C-Root SP	10	95.72±2.04	96.60±1.46	97.47±1.10	0.142
GFB	10	88.04±3.01	90.41±2.77	92.86±2.88	<0.05

根管封闭剂	部位	n	P值
根管封闭剂	部位	n	单尖充填法-超声活化单尖充填法
iRoot SP	根冠1/3	10	0.088
	根中1/3	10	0.807
	根尖1/3	10	0.130
	整体	10	0.441
C-Root SP	根冠1/3	10	0.368
	根中1/3	10	0.867
	根尖1/3	10	<0.01
	整体	10	0.421
GFB	根冠1/3	10	<0.01
	根中1/3	10	0.219
	根尖1/3	10	0.061
	整体	10	0.106