一体化玻璃纤维桩修复漏斗状根管粘接强度的体外研究

doi:10.19723/j.issn.1671-167X.2019.02.024

北京大学学报（医学版） ›› 2019, Vol. 51 ›› Issue (2): 327-334. doi: 10.19723/j.issn.1671-167X.2019.02.024

一体化玻璃纤维桩修复漏斗状根管粘接强度的体外研究

张媛¹,韩建民²,刘林¹,邓旭亮^3,^∆()

^1. 首都医科大学附属北京安贞医院口腔科,北京 100029
^2. 北京大学口腔医学院·口腔医院, 口腔材料实验室, 国家口腔疾病临床医学研究中心口腔数字化医疗技术和材料国家工程实验室口腔数字医学北京市重点实验室,北京 100081
^3. 北京大学口腔医学院·口腔医院, 特诊科国家口腔疾病临床医学研究中心口腔数字化医疗技术和材料国家工程实验室口腔数字医学北京市重点实验室,北京 100081

收稿日期:2018-12-05 出版日期:2019-04-18 发布日期:2019-04-26
通讯作者: 邓旭亮 E-mail:kqdengxuliang@bjmu.edu.cn
基金资助:
国家重点研发计划项目(2017YFC1104301/4300)

Study of bond strength of one-piece glass fiber posts-and-cores with flared root canals in vitro

Yuan ZHANG¹,Jian-min HAN²,Lin LIU¹,Xu-liang DENG^3,^∆()

^1. Department of Stomatology, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China
^2. Department of Dental Materials, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
^3. Department of Geriatric Dentistry, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China

Received:2018-12-05 Online:2019-04-18 Published:2019-04-26
Contact: Xu-liang DENG E-mail:kqdengxuliang@bjmu.edu.cn
Supported by:
National Key Research and Development Program of China(2017YFC1104301/4300)

摘要/Abstract

摘要：

目的: 比较3种纤维桩(CAD/CAM一体化玻璃纤维桩、预成型玻璃纤维桩、光固化可塑性纤维桩)对漏斗状根管的粘接强度及温度循环对其粘接强度的影响。方法: 90颗单根离体牙随机分为3组,分别采用CAD/CAM一体化玻璃纤维桩核、同种材料制成的预成型玻璃纤维桩、光固化可塑性纤维桩修复,粘结完成后,储存在37 ℃恒温去离子水中7 d,每组随机选取15颗离体牙进行温度循环。使用精密片切机制备微推出试验试件,万能力学试验机测试微推出粘接强度并使用体视显微镜分析破坏形式。结果: CAD/CAM一体化玻璃纤维桩核组:温度循环前根颈部、根中部、根尖部的粘接强度分别为(9.58±2.67) MPa、(8.62±2.62) MPa、(8.21±2.48) MPa,温度循环后根颈部、根中部、根尖部的粘接强度分别为(8.14±3.19) MPa、(6.43±2.47) MPa、(6.45±3.20) MPa;预成型纤维桩组:温度循环前根颈部、根中部、根尖部的粘接强度分别为(3.89±2.04) MPa、(4.83±1.23) MPa、(4.67±1.86) MPa,温度循环后根颈部、根中部、根尖部的粘接强度分别为(6.18±1.61) MPa、(5.15±1.94) MPa、(6.39±2.87) MPa;光固化可塑性纤维桩组:温度循环前根颈部、根中部、根尖部的粘接强度分别为(4.05±2.41) MPa、(1.75±1.70) MPa、(2.60±2.34) MPa,温度循环后根颈部、根中部、根尖部的粘接强度分别为(5.04±2.72) MPa、(1.96±1.70) MPa、(1.34±0.92) MPa。桩核类型、根管部位对粘接强度的影响具有统计学意义(P<0.05),与其他两组相比,一体化玻璃纤维桩核在根颈部、根中部、根尖部均具有最高的粘接强度。温度循环对3种纤维桩粘接强度的影响无统计学意义(P>0.05)。结论: 一体化玻璃纤维桩核可能具有更好的粘接强度,粘接性能较好。

关键词: 一体化纤维桩核, 微推出, 温度老化, 粘接强度

Abstract:

Objective: To compare the effects of three kinds of fiber posts (CAD/CAM one-piece glass fiber posts-and-cores, prefabricated glass fiber post and light curing plastic fiber post) on the bond strength of flared root canals and the effect of thermal cycling on their bond strength.Methods: Extracted human single teeth (n=90) were endodontically treated and randomly divided into three groups (n = 30 each). The teeth were restored by three kinds of fiber post: CAD/CAM one-piece glass fiber posts-and-cores, prefabricated posts and light curing plastic fiber post. Following post cementation, the specimens were stored in distilled water at 37 ℃ for 7 days. Half bonded specimens of each group were submitted to thermal cycling (6 000 times, 5 to 55 ℃) prior to micro-push-out bond strength test. Fabrication of micro-push-out bond strength test specimens was conducted by precision slicing machine. The micro-push-out bond strength was tested using a universal testing machine, and the failure modes were examined with a stereomicroscope.Results: In CAD/CAM one-piece glass fiber posts-and-cores group, the bond strength of cervical, middle and apical was (9.58±2.67) MPa,(8.62±2.62) MPa,(8.21±2.48) MPa respectively before thermal cycling, and after thermal cycling the bond strength of cervical, middle and apical was (8.14±3.19) MPa,(6.43±2.47) MPa,(6.45±3.20) MPa respectively. In prefabricated posts group, the bonding strength of cervical, middle and apical was (3.89±2.04) MPa,(4.83±1.23) MPa,(4.67±1.86) MPa respectively before thermal cycling, and after thermal cycling the bond strength of cervical, middle and apical was (6.18±1.61) MPa,(5.15±1.94) MPa,(6.39±2.87) MPa respectively. In light curing plastic fiber post group, the bond strength of cervical, middle and apical before thermal cycling was (4.05±2.41) MPa,(1.75±1.70) MPa,(2.60±2.34) MPa respectively, and after thermal cycling the bond strength of cervical, middle and apical was (5.04±2.72) MPa,(1.96±1.70) MPa,(1.34±0.92) MPa respectively. Postal types and root canal regions were found to significantly affect the push-out bond strength. Compared with the other two groups, the one-piece glass fiber posts-and-cores had the highest bonding strength in the cervical, middle and apical. Temperature cycling has no significant effect on the micro push-out bond strength of three kinds of fiber posts.Conclusion: One-piece glass fiber posts-and-cores has better bonding strength and excellent bonding performance.

Key words: One-piece glass fiber posts-and-cores, Micro push-out test, Temperature aging, Bond strength

中图分类号:

R783.6

张媛,韩建民,刘林,邓旭亮. 一体化玻璃纤维桩修复漏斗状根管粘接强度的体外研究[J]. 北京大学学报（医学版）, 2019, 51(2): 327-334.

Yuan ZHANG,Jian-min HAN,Lin LIU,Xu-liang DENG. Study of bond strength of one-piece glass fiber posts-and-cores with flared root canals in vitro[J]. Journal of Peking University(Health Sciences), 2019, 51(2): 327-334.

图/表 12

图1

图2

表1

3种类型纤维桩与根管牙本质的微推出粘接强度及破坏模式"

Thermal cycling (TC)	Group specimens(n=540)	Region	Bond strength/MPa, $x ?$ ±s	Failure modes
Thermal cycling (TC)	Group specimens(n=540)	Region	Bond strength/MPa, $x ?$ ±s	M	AD	AP	C
Before TC	One-piece post(n=30)	1	9.58±2.67
	One-piece post(n=30)	2	8.62±2.62	32(36.56%)	57(63.33%)	1(1.11%)	0
	One-piece post(n=30)	3	8.21±2.48
	OYAPost(n=30)	1	3.89±2.04
	OYAPost(n=30)	2	4.83±1.23	60(66.67%)	15(16.67%)	15(16.67%)	0
	OYAPost(n=30)	3	4.67±1.86
	Everstick post(n=30)	1	4.05±2.41
	Everstick post(n=30)	2	1.75±1.70	66(73.33%)	24(26.67%)	0	0
	Everstick post(n=30)	3	2.60±2.34
After TC	One-piece post(n=30)	1	8.14±3.19
	One-piece post(n=30)	2	6.43±2.47	31(34.44%)	59(65.56%)	0	0
	One-piece post(n=30)	3	6.45±3.20
	OYAPost(n=30)	1	6.18±1.61
	OYAPost(n=30)	2	5.15±1.94	66(73.33%)	12(13.33%)	12(13.33%)	0
	OYAPost(n=30)	3	6.39±2.87
	Everstick post(n=30)	1	5.04±2.72
	Everstick post(n=30)	2	1.96±1.70	68(75.56%)	22(24.44%)	0	0
	Everstick post(n=30)	3	1.34±0.92

表1

表2

表3

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图9

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Thermal cycling(TC)	Group	Between group	Mean difference	P	95% confidence interval
Thermal cycling(TC)	Group	Between group	Mean difference	P	Lower bound	Upper bound
Before TC	One-piece post 1	OYAPost 1	5.941 884 0	0	3.625 667	8.258 101
		Everstick post 1	5.529 538 2	0	3.638 355	7.420 722
	One-piece post 2	OYAPost 2	3.756 727 0	0.002	1.440 510	6.072 944
		Everstick post 2	6.586 674 7	0	4.695 491	8.477 858
	One-piece post 3	OYAPost 3	3.868 457 1	0.001	1.552 240	6.184 674
		Everstick post 3	5.934 455 4	0	4.043 272	7.825 639
	OYAPost 1	Everstick post 1	-0.412 345 7	0.668	-2.303 529	1.478 838
	OYAPost 2	Everstick post 2	2.829 947 7	0.003	0.938 764	4.721 131
	OYAPost 3	Everstick post 3	2.065 998 3	0.032	0.174 815	3.957 182
After TC	One-piece post 1	OYAPost 1	1.957 097 3	0.001	0.761 008	3.153 187
		Everstick post 1	3.105 304 5	0	1.909 215	4.301 394
	One-piece post 2	OYAPost 2	1.281 611 0	0.036	0.085 522	2.477 700
		Everstick post 2	4.458 778 0	0	3.262 689	5.654 867
	One-piece post 3	OYAPost 3	0.050 721 8	0.934	-1.145 368	1.246 811
		Everstick post 3	5.101 065 0	0	3.904 976	6.297 154
	OYAPost 1	Everstick post 1	1.148 207 2	0.060	-0.047 882	2.344 297
	OYAPost 2	Everstick post 2	3.177 167 0	0	1.981 078	4.373 256
	OYAPost 3	Everstick post 3	5.050 343 2	0	3.854 254	6.246 433

Items	TypeⅢ SS	Standard deviation	F	P
Correction model	1 983.714	116.689	21.025	0.000
Thermal cycling	0.373	0.373	0.067	0.796
Postal types	1 373.119	686.560	123.705	0.000
Root canal regions	100.863	50.432	9.087	0.000
Thermal cycling * Root canal regions	20.647	10.324	1.860	0.157
Thermal cycling * Postal types	111.321	55.660	10.029	0.000
Root canal regions* Postal types	100.836	25.209	4.542	0.001
Thermal cycling * Postal types * Root canal regions	18.048	4.512	0.813	0.517

一体化玻璃纤维桩修复漏斗状根管粘接强度的体外研究

Study of bond strength of one-piece glass fiber posts-and-cores with flared root canals in vitro

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