Comparison of the Clinical Effect of Prefabricated Fiber Post and Plastic Fiber Post in Oral Repair

Objective:To observe and analyze the clinical effect of prefabricated fiber posts and plastic fiber posts in oral repair.Methods:A total of 128 patients admitted to our hospital from January 2023 to June 2024 underwent oral prosthesis treatment,of which the control group(n=64)was treated with prefabricated fiber posts and the observation group(n=64)with plastic fiber posts.The efficacy,retention rate,and complication rate of the two groups were compared.Results:The total effective rate of the observation group was 96.88%,which was significantly higher than that of the control group(84.38%)(P<0.05).The restoration retention rate in the observation group was 95.31%,which was significantly higher than that in the control group(85.94%)(P<0.05).The incidence of postoperative complications in the observation group was 4.69%,which was significantly lower than that in the control group(15.63%)(P<0.05).Conclusion:For patients with oral prostheses,the use of plastic fiber posts for treatment shows better clinical effects,effectively improving the retention rate of the prosthesis and reducing the incidence of complications.Thus,it is worthy of popularization and application.

Influence of fiber posts on the fracture resistance of endodontically treated premolars with different dental defects

This study aimed to evaluate the influence of quartz fiber post placement on the fracture resistance of endodontically treated premolars with different dental defects under dynamic loading.Fifty extracted single-rooted mandibular premolars were randomized into five groups.Each group was prepared according to numbers of residual walls ranged from 0 to 4.Then each group was divided into two subgroups with one restored with quartz fiber posts and the other without posts.In no-post groups,gutta percha point 2 mm below cemento-enamel junction was removed.Composite resin was adapted to the well and used to shape the core directly.Each tooth was restored with a complete metal crown.Dynamic loading was carried out in a masticatory simulator with a nominal load of 50 N at 2 Hz for 300 000 loading cycles.Then a quasi-statically load was applied in a universal testing machine 306 to the long axis with a crosshead speed of 1 mm？min21until fracture.Data were analyzed with one-way analysis of variance and pairwise comparison（P,0.05）.No specimens failed during dynamic loading.The fracture resistance enhanced with the increase of numbers of coronal walls and the differences were significant（P,0.05）.Placement of fiber posts had a significant effect when fewer than two walls remained（P,0.05）,but it had no significant influence in groups with two,three or four walls（P.0.05）.Fiber post did not change failure mode,and the fracture pattern was mainly favorable.More dentin walls need to be retained in clinic.When no less than two walls remained,a fiber post is not always necessary.

AN EXPERIMENTAL STUDY ON POST-BUCKLING BEHAVIOR OF SLENDER COLUMN WITH FIBER REINFORCED COMPOSITE MATERIAL

Equilibrium paths of post-buckling are measured for large slenderness column specimens made of the fiber reinforced composite material. The influence of the initial curvature is investigated experimentally and compared with the result of the initial post-buckling theory. Both the theoretical and experimental results reveal that the column with the initial curvature has stable post-buckling behaviors and is not sensitive to the imperfection in the form of initial curvature. The experimental results show that when the lateral buckling displacement is less than 20 percent of the column length, the experimental results agree with the results from the theory of initial post-buckling quite well, while they agree with the results from the large deflection theory in a quite large range.

Enhanced gas separation performance of mixed matrix hollow fiber membranes containing post-functionalized S-MIL-53

Mixed matrix hollow fiber membranes（MMHFMs）filled with metal-organic frameworks（MOFs）have great potential for energy-efficient gas separation processes,but the major hurdle is polymer/MOFs interfacial defects and membrane plasticization.Herein,lab-synthesized MIL-53 was post-functionalized by aminosilane grafting and subsequently incorporated into Ultem-1000 polymer matrix to fabricate high performance MMHFMs.SEM,DLS,XRD and TGA were performed to characterize silane-modified MIL-53（S-MIL-53）and prepared MMHFMs.Moreover,the effect of MOFs loading was systematically investigated first;then gas separation performance of MMHFMs for pure and mixed gas was evaluated under different pressures.MMHFMs containing post-functionalized S-MIL-53 achieved remarkable gas permeation properties which was better than model predictions.Compared to pure HFMs,CO2permeance of MMHFM loaded with 15%S-MIL-53 increased by 157%accompanying with 40%increase for CO2/N2selectivity,which outperformed the MMHFM filled with naked MIL-53.The pure and mixed gas permeation measurements with elevated feed pressure indicated that incorporation of S-MIL-53 also increased the resistance against CO2plasticization.This work reveals that post-modified MOFs embedded in MMHFMs facilitate the improvement of gas separation performance and suppression of membrane plasticization.

DT Light-Post纤维桩修复残根、残冠的疗效分析

目的:评价DTLight-Post纤维桩在残根、残冠修复治疗中的作用。方法:选择临床修复病例193例、287颗前牙及前磨牙,其中残冠195例,残根92例,行完善的根管治疗后,用DT Light-Post纤维桩系统恢复桩核后作全瓷冠修复,采用SAS6.12软件包对残根、残冠修复结果作χ2检验。结果:随访1～3a,195例残冠修复中,6例发生冠连桩核脱落;92例残根修复中,17例发生冠连桩核脱落,脱落病例改用化学固化黏结剂粘固后1a内未再脱落。其余修复体完好,未发生桩折或牙折。总治疗成功率为91.98%,残根脱落率显著高于残冠,Ρ=0.001。结论:纤维桩是一种较为理想的桩核修复方法,其适应证的选择及黏结剂种类和黏结技术对治疗成功率有明显影响。

D.T.Light-Post纤维桩的临床应用观察

目的探讨D.T.Light-post纤维桩在残根残冠修复治疗中的临床效果。方法选择187例患者324颗残根残冠,经完善的根管治疗后,选择D.T.Light-post纤维桩核冠修复,并进行半年～2年半临床疗效观察。结果320颗患牙成功修复,4颗患牙因纤维桩折断失败,修复成功率为98.77%。结论D.T.Light-post纤维桩核冠修复残根残冠效果良好。

自粘结树脂水门汀与全酸蚀粘结系统对POPO和Para Post玻璃纤维桩在不同桩道深度剪切粘结强度的影响

目的: 比较不同粘结系统粘固 2 种玻璃纤维桩后,在不同桩道深度的剪切粘结强度。方法: 选取 36 颗新鲜单根管牙,常规根管治疗后分成 4 组: POPO 玻璃纤维桩和自粘结树脂水门汀( POPO + SA) ; POPO 玻璃纤维桩和全酸蚀粘结系统( POPO + ER) ; Para Post 玻璃纤维桩和自粘结树脂水门汀( PP + SA) ; Para Post 玻璃纤维桩和全酸蚀粘结系统( PP + ER) ,每组9 颗。桩道预备后按分组将纤维桩粘固于根管中,每个牙根切成厚度1 mm 的薄片6个,按桩道深度记为颈 1/3、中 1/3 和根尖 1/3,各 2 片。采用薄片推出试验测量剪切粘结强度。结果: 纤维桩、粘结系统和桩道深度均对剪切粘结强度有影响。纤维桩与粘结系统两因素间有交互作用( F =13. 081,P <0. 001) 。在桩道中 1/3,PP + SA 组剪切粘结强度( 9. 900 ±0. 934) MPa 高于 POPO + SA 组的( 6. 537 ±0. 801) MPa 和 POPO + ER组的( 7. 406 ±0. 758) MPa( P <0. 05) ; 在桩道根尖 1/3,PP + SA 组剪切粘结强度( 5. 350 ±0. 488) MPa 高于 PP + ER组的( 2. 534 ±0. 548) MPa ( P <0. 05) 。各组粘结强度随桩道深度增加而呈下降趋势( F =99. 555,P <0. 001) 。结论: Para Post 玻璃纤维桩与自粘结树脂水门汀联合使用的粘结效果最佳; 树脂粘结系统粘结效果在根颈部更可靠。

纤维桩联合不同冠部修复方式修复穿髓型非龋性颈部缺损牙体的力学分析

背景:使用纤维桩修复穿髓型非龋性颈部缺损可以改变牙齿的应力分布,显著降低患牙折裂风险,但关于纤维桩改善牙体抗折性的力学机制及穿髓型非龋性颈部缺损的最佳冠部修复方式尚有争论。目的:综述纤维桩修复穿髓型非龋性颈部缺损后的应力分布模式,在各种受力状态下的抗折能力与断裂模式,以及纤维桩联合不同冠部修复方式的最新研究进展。方法:应用计算机在PubMed和中国知网数据库中检索2008年9月至2023年9月发表的相关文献,英文检索词为“non-carious cervical lesions,endodontically treated teeth restoration,endodontically treated teeth stress distribution”,中文检索词为“非龋性颈部缺损,根管治疗后牙体修复,根管治疗后牙齿应力分布”,最终纳入56篇文献进行分析。结果与结论:穿髓型非龋性颈部缺损根管治疗后,应用纤维桩修复可部分改善牙齿颈部应力,同时不会增加牙根纵裂的风险;使应力分布更加均匀,提高牙齿的抗折性。使用纤维桩修复的非龋性颈部缺损牙齿若折断,其断裂模式显示出有利的、可恢复的或可修复的断裂模式。纤维桩联合瓷贴面或贴面式嵌体可能会成为修复穿髓型非龋性颈部缺损的一种较理想微创修复方法。

Fracture Resistance and Failure Patterns of Open Apex Root Teeth with Different Posts after Endodontic Treatment

The aim of this study is to investigate the influence of different posts on the fracture mechanics of endodontically-treated teeth with open apex. Forty-eight human maxillary anterior teeth were collected, and the root was transversely sectioned 12 mm under the cementoenamal junction （CEJ）. These samples were then randomly divided into two groups, i.e., minor diameter open apex root （group A） and major diameter open apex root （group B）, with mineral trioxide aggregate （MTA） placed into the apical 4 mm in the root canals. Subsequently, both groups were respectively further divided into three subgroups as follows： fiber-post （subgroup 1）, metal post （subgroup 2） and non-post （subgroup 3） group. Teeth were restored with a composite resin crown and tested by using a universal testing machine at the rate of 1 mm/min cross-head. Values of the maximum fracture resistance and failure patterns were recorded and compared among all subgroups. In addition, the changes of MTA properties were carefully examined via X-ray photography. Our results indicate that （1） In group A, the mean value of fracture resistance for teeth restored with fiber posts were statistically higher than that with either metal post or non-post; （2） In group B, there was no statistically significant difference in the mean value of fracture resistance among three subgroups; （3） No statistical significance in the mean value of fracture resistance was found between group A and group B; （4） The failure modes of most samples （58%） were irreparable; （5） MTA in two teeth developed cracks after loading tests. In conclusion, endodontically-treated teeth restored with fiber posts are more resistant to fracture than those restored with either metal posts or non-post, and most of the fracture modes are catastrophic in nature.

RTD MACRO-LOCK POST固位增强型石英纤维桩与金属桩修复上颌前牙残冠的临床疗效比较

目的观察RTD MACRO-LOCK POST固位增强型石英纤维桩与金属桩修复上颌前牙残冠的临床疗效。方法选取上颌前牙牙体缺损患者200例,随机分为两组,分别采用RTD MACRO-LOCK POST固位增强型石英纤维桩与金属桩进行桩核冠修复,随访观察3年。结果纤维桩组患者修复后6个月临床成功率与金属桩组无明显区别(P>0.05),修复后3年临床成功率高于金属桩组(P<0.05)。结论在正确选择适应证前提下,RTD MACRO-LOCK POST固位增强型石英纤维桩修复效果优于金属桩。

Stress Distribution in Maxillary Central Incisors without Ferrules: A Finite Element Analysis of Post and Core Systems

Purpose: The purpose of this study was to identify optimal post and core materials for central incisors without ferrules using three-dimensional finite element analysis and three-point bending tests. Methods: Stress analyses were performed with six models: cast metal post and core (MP), composite resin core alone, straight fiber-reinforced post-composite resin core (FSR), tapered fiber-reinforced post-composite resin core, straight titanium post-composite resin core (TSR), and tapered titanium post-composite resin core (TTR). A 100-N load was applied to the lingual surface at a 45° angle to the long axis of the tooth. Maximum von Mises stress distributions were calculated with finite element analysis software. Five samples each of composite resin, straight fiber-reinforced post, straight titanium post, straight fiber-reinforced post and composite resin, and straight titanium post and composite resin were subjected to three-point bending tests, followed by analysis of variance and Tukey’s multiple comparison test. Results: Stress distribution was optimal on TTR. Maximum von Mises stress on the cervical side of the post was greatest in TSR (693 MPa) and TTR (556 MPa). Maximum stress on the apical side of the post was greatest in MP (110 MPa). Maximum stress in surrounding dentin was lowest in MP (203 MPa) and TTR (250 MPa). Gap distance was smallest in MP (0.09 mm) and largest in FSR (0.26 mm). Mean maximum three-point bending force was lowest in composite resin (26.9 N/mm) and highest in titanium post and composite resin (97.1 N/mm). Titanium post bending strength was consistently greater than that of the fiber-reinforced post (p < 0.01). Conclusion: These results revealed optimal stress distribution and high bending strength with the tapered titanium post and resin combination, suggesting that this combination can most effectively prevent root or post fracture in an anterior tooth without a ferrule.

DT Light-post纤维桩修复前牙残根残冠的疗效分析

目的:评价DT Light-post纤维桩在前牙残根、残冠修复治疗中的作用。方法:选择上前牙牙体缺损病例46例,行完善的根管治疗后,A组采用DT Light-post纤维桩系统恢复桩核后作全瓷冠修复,B组采用金属桩核加金属烤瓷冠修复。采用SPSS12.0软件包对实验结果进行统计学分析。结果:随访2年,两组成功率差异有显著性,两组修复牙的牙周情况无显著性差异。结论:纤维桩是一种较为理想的前牙牙体缺损桩核修复方法。

DT Light-Post纤维桩修复前牙缺损的美学与预后效果探讨

目的:探讨DT Light-Post纤维桩对前牙的美容修复和预后效果。方法:选取2015年1月-2016年10月笔者科室收治的172例前牙缺损患者为研究对象,按照简单随机法将患者分为三组。对照组:54例(70颗患牙),采用铸造金属桩制作桩核;普通纤维桩组:58例(70颗患牙),采用玻璃纤维桩核;DT Light-Post纤维桩组:60例(70颗患牙),采用DT Light-Post纤维桩制作桩核。比较三组患者临床修复效果,以及修复后1周、6个月、12个月、24个月的牙龈指数。结果:三组患者前牙修复成功率为84.29%、92.86%、98.57%,DT Light-Post纤维桩组前牙修复成功率高于对照组(P<0.05);DT Light-Post纤维桩组前牙修复成功率与普通纤维桩组比较,无统计学差异(P>0.05)。三组患者前牙修复后1周、6个月牙龈指数比较无明显差异(P>0.05);DT Light-Post纤维桩组患者前牙修复后12、24个月牙龈指数低于对照组(P<0.05)。结论:DT Light-Post纤维桩应用于前牙美容修复具有较好疗效,能够替代铸造桩核,成为临床前牙修复方法之一。

Remote structural health monitoring with serially multiplexed fiber optic acoustic emission sensors

Development and testing of a serially multiplexed fiber optic sensor system is described.The sensor differs from conventional fiber optic acoustic systems,as it is capable of sensing AE emissions at several points along the length of a single fiber.Multiplexing provides for single channel detection of cracks and their locations in large structural systems. An algorithm was developed for signal recognition and tagging of the AE waveforms for detection of' crack locations,Labora- tory experiments on plain concrete beams and post-tensioned FRP tendons were pcrlormed to evaluate the crack detection capability of the sensor system.The acoustic emission sensor was able to detect initiation,growth and location of the cracks in concrete as well as in the FRP tendons.The AE system is potentially suitable lot applications involving health monitoring of structures following an earthquake.

Comparison of Fracture Resistance Strength of Six Non-metal Dental Posts under the Oblique Load in Vitro

目的:测试6种非金属桩钉的抗折性能,以了解不同桩钉的强度,从而指导临床合理选择桩钉。材料:将36件桩钉按种类分为6个实验组(n=6):A组:Parapost fiber(Whaledent Coltene);B组:Aesthetic Plus(Bisco);C组:Cosmopost(Ivoclar Vivadent);D组:Exper-fiber A(NWPU);E组:Exper-fiber B(NWPU);F组:Exper-fiber C(NWPU)。将待测的桩钉固定于特别加工的夹具中,用通用电子力学试验机测试桩钉在135°单端受力时的破坏载荷,对结果进行方差分析和SNK检验。结果:不同种类桩钉的抗折力不同,Exper-fiber A posts和Exper fiber Bposts的抗折力无显著差异,分别是(87.21±3.12)N和(89.26±1.72)N。与其他组相比Exper-fiber C posts的抗折力最高为(99.93±1.97)N。Parapost-fiber组的抗折力最低为(47.07±1.36)N。结论:不同种类非金属桩钉的抗折力不同,临床使用中应根据实际受力情况合理选择。

牙体缺损类型与纤维桩位置对桩核冠修复上颌前磨牙抗折性能的影响

纳入120颗离体上颌前磨牙分成5组(每组24颗),制备360°牙本质肩领(A组)、颊侧180°牙本质肩领(B组)、腭侧180°牙本质肩领(C组)、远中180°牙本质肩领(D组)、近中180°牙本质肩领(E组),分别用树脂核+全冠修复、颊侧根管纤维桩+树脂核+全冠修复、腭侧根管纤维桩+树脂核+全冠修复、颊、腭侧根管纤维桩+树脂核+全冠修复。结果显示:A组样本牙的抗折破坏载荷值高于B、C、D、E组(P<0.05),颊侧根管置入纤维桩抗折强度高于腭侧(P<0.05)。提示360°完整牙本质肩领能提供最佳的抗折强度,牙本质肩领不完整时,推荐置入颊侧根管纤维桩修复。

三种不同树脂粘结系统对纤维桩粘结效果的影响

目的评价全酸蚀粘结系统、自酸蚀粘结系统及自粘结树脂对纤维桩粘结效果的影响。方法选取2021年10月至2022年3月于泰州职业技术学院口腔门诊部行前牙纤维桩修复的82例患者(共122颗前牙)作为研究对象,按照不同树脂粘结系统将其分为全酸蚀组(28例,40颗)、自酸蚀组(26例,40颗)及自粘结组(28例,42颗)。全酸蚀组使用Tetric-N Bond全酸蚀树脂粘结剂对纤维桩进行粘结,自酸蚀组使用All-Bond Universal自酸蚀树脂粘结剂对纤维桩进行粘结,自粘结组使用Relyx Unicem自粘结树脂对纤维桩进行粘结,完成纤维桩粘结后行全瓷冠修复。比较三组纤维桩核的稳固率及全瓷冠修复体的红色美学指数(PES)、白色美学指数(WES)评分。结果粘结6、12、18个月后,三组纤维桩核的稳固率组间及组内比较,差异无统计学意义(P>0.05)。粘结18个月后,三组全瓷冠修复体的PES、WES评分比较,差异无统计学意义(P>0.05)。结论三种树脂粘结系统对纤维桩的粘结效果在短期内相当,远期效果还需进一步的观察。

纤维桩、纳米复合树脂结合氧化锆烤瓷冠修复牙楔状缺损的效果及对龈沟液炎性介质水平、美学评分的影响

目的探究纤维桩、纳米复合树脂结合氧化锆烤瓷冠修复牙楔状缺损的效果及对龈沟液(GCF)炎性介质水平、美学评分的影响。方法选择2018年4月至2021年6月收治的96例牙楔状缺损患者为研究对象,以随机数字表法将其分为对照组和观察组,每组48例。对照组接受金属桩核结合金属烤瓷冠修复,观察组实施纤维桩、纳米复合树脂结合氧化锆烤瓷冠修复。比较两组的修复效果。结果观察组的口腔致病菌检出率低于对照组,修复成功率高于对照组(P<0.05)。修复后,观察组GCF中的神经激肽A(NKA)、组织基质金属蛋白酶抑制剂-1(TIMP-1)、基质金属蛋白酶-9(MMP-9)及白细胞介素-8(IL-8)水平均低于对照组(P<0.05)。修复后,观察组的红色美学指数(PES)、白色美学指数(WES)评分均高于对照组(P<0.05)。修复后,观察组的GCF量及碱性磷酸酶(ALP)、天冬氨酸转氨酶(AST)水平均低于对照组(P<0.05)。结论纤维桩、纳米复合树脂结合氧化锆烤瓷冠修复牙楔状缺损可改善GCF量及GCF中炎性介质、ALP、AST表达,提高修复成功率及美学评分。

纤维桩+复合树脂+氧化锆全瓷冠修复根管治疗后后牙楔状缺损的疗效分析

目的:探究纤维桩+复合树脂+氧化锆全瓷冠修复根管治疗后后牙楔状缺损患者的效果及美观满意度。方法:纳入2022年1月-2023年1月在笔者医院就诊的102例后牙楔状缺损患者,根据患者自主选择意愿分为研究组(n=50)和对照组(n=52),对照组行金属桩核+金属烤瓷冠修复,研究组行纤维桩+复合树脂+氧化锆全瓷冠修复。6个月后,对比两组临床疗效,观察两组牙周健康情况(牙龈指数、菌斑指数、龈沟出血指数),检测牙周炎症[肿瘤坏死因子-α(Tumor necrosis factor-α,TNF-α)、白细胞介素-4(Interleukin-4,IL-4)、白细胞介素-6(Interleukin-6,IL-6)],调查美观满意度[美国公共健康服务标准(United states public health service,USPHS)]和实用度(咀嚼功能、咬合情况、语言功能),比较两组并发症发生情况。结果:治疗后,研究组治疗有效率达92.00%,高于对照组的76.92%(P<0.05);两组牙周健康相关指数及TNF-α、IL-4、IL-6均较治疗前降低,且研究组降低幅度大于对照组(P<0.05);治疗后,研究组牙齿表面形态、色泽协调性、边缘着色满意度均高于对照组(P<0.05),两组咀嚼功能、咬合情况、语言功能均较治疗前提高,但差异无统计学意义(P>0.05);两组并发症发生率比较治疗组低于对照组(P<0.05)。结论:采用纤维桩+复合树脂+氧化锆全瓷冠修复根管治疗后后牙楔状缺损能够减轻炎症反应,提升患者牙周健康,增加美观满意度及实用度,疗效显著,安全性高。

竹复合材料制备牙科纤维桩灭菌前后的力学性能变化及生物相容性研究

背景竹纤维是一种产量丰富的天然植物纤维,其力学性能可与玻璃纤维相媲美,是一种临床应用前景广阔的生物材料。目的研发一种低模量高强度的竹纤维复合材料作为牙科纤维桩材料。方法采用树脂传递模塑法制备竹纤维复合材料,将竹纤维复合材料随机分为两组,分别用于力学性能实验和生物相容性实验。力学性能实验分为对照组和灭菌组,对照组未灭菌,灭菌组通过121℃和2.2 MPa的高压灭菌器灭菌30 min。高精度微力学试验机分析灭菌前后竹复合材料的力学性能变化和断裂形式的荷载-位移曲线变化。扫描电子显微镜观察灭菌前后竹复合材料的表面形貌和断裂形貌。生物相容性实验包括CCK-8细胞毒性实验、细胞周期和凋亡实验、溶血实验。CCK-8细胞毒性实验分为阴性对照组、空白对照组和浸提液组,阴性对照组为正常培养基培养的细胞,空白对照组为无细胞的正常培养基,浸提液组为制备不同浓度(25%、50%、75%、100%)的竹纤维复合材料浸提液;细胞周期实验分为阴性对照组和处理组,阴性对照组为正常培养基培养的细胞,处理组为100%浓度的浸提液;细胞凋亡实验分为对照组和处理组,对照组为正常培养基培养的细胞,处理组为100%浓度的浸提液;溶血试验为实验组、阴性对照组和阳性对照组,实验组为100%浓度的浸提液,阴性对照组为0.9%氯化钠注射液,阳性组为蒸馏水,进一步验证竹纤维复合材料的生物相容性。结果未灭菌的对照组与灭菌组相比,弯曲模量[(9±2)GPa vs(11±4)GPa]和弯曲强度[(498±95)MPa vs(496±30)MPa]差异均无统计学意义(P>0.05)。载荷-位移曲线显示,未灭菌的对照组相比灭菌组有较好的断裂模式,未灭菌的对照组呈梯度破坏,灭菌组呈脆性断裂。扫描电镜显示,未灭菌的对照组和灭菌组的纤维和树脂表面形貌结合较好;未灭菌的对照组的断裂形貌为纤维拔出,灭菌组的断裂形貌为树脂基体的整体断裂。CCK-8结果显示,在短期内竹纤维复合材料100%浓度的浸提液吸光度值与阴性对照组相比,差异有统计学意义(P<0.01),100%浸提液的增殖能力最强。细胞周期结果显示,100%浓度的浸提液在第5天有较好的细胞增殖周期,与阴性对照组相比,差异无统计学意义(P>0.05)。细胞凋亡结果显示,100%浓度的浸提液在第5天无诱导细胞凋亡的作用,与阴性对照组相比,差异无统计学意义(P>0.05)。溶血试验表明,实验组竹纤维复合材料浸提液的溶血率为2.69%,溶血率<5%,与阳性对照组相比,差异有统计学意义(P<0.01)。结论灭菌前后的竹纤维复合材料力学性能相对稳定,且该复合材料具有良好的生物相容性,具有制备牙科纤维桩材料的潜力。