目的通过观察和对比深龋露髓的年轻恒牙应用iRoot BP Plus和矿物三氧化聚合体(MTA)直接盖髓的远期临床疗效,探讨iRoot BP Plus在年轻恒牙盖髓治疗上的优越性。方法对7~15岁患者的30颗年轻、深龋露髓患牙(包括去腐露髓和意外露髓的年轻恒...目的通过观察和对比深龋露髓的年轻恒牙应用iRoot BP Plus和矿物三氧化聚合体(MTA)直接盖髓的远期临床疗效,探讨iRoot BP Plus在年轻恒牙盖髓治疗上的优越性。方法对7~15岁患者的30颗年轻、深龋露髓患牙(包括去腐露髓和意外露髓的年轻恒牙),随机分为iRoot BP Plus组和MTA组,每组各15颗,分别行iRoot BP Plus和MTA直接盖髓术,随访2组1年内的临床疗效(包括牙髓症状、牙髓活力、钙化桥的形成和根尖孔闭合),对比分析2组钙化桥形成率和直接盖髓成功率,百分率统计采用秩和检验,两者盖髓时间统计采用独立样本t检验。结果术后1年,iRoot BP Plus组和MTA组治疗成功率分别为86.7%和80.0%,组间差异无统计学意义(χ~2=0.240,P=0.624);而2组直接盖髓操作时间分别为(2.55±0.33)和(4.88±0.25)min,差异有统计学意义(t=-21.983,P<0.001);iRoot BP Plus组盖髓就诊次数少于MTA组,iRoot BP Plus组和MTA组术后随访3个月X线完整钙化桥形成率为80.0%和73.3%(χ~2=0.186,P=0.666),6个月形成率分别为86.7%和80.0%(χ~2=0.240,P=0.624),12个月形成率分别为86.7%和80.0%(χ~2=0.240,P=0.624),组间差异均无统计学意义。iRoot BP Plus组患牙未见牙齿变色,MTA组患牙均观察到牙齿变色现象。结论 iRoot BP Plus直接盖髓的临床疗效与MTA相近,但iRoot BP Plus操作较为便利、就诊次数少且无牙齿变色现象,是临床上更为理想的直接盖髓剂。展开更多
Tissue engineering is promising in realizing successful treatments of human body tissue loss that current methods cannot treat well or achieve satisfactory clinical outcomes.In scaffold-based bone tissue engineering,a...Tissue engineering is promising in realizing successful treatments of human body tissue loss that current methods cannot treat well or achieve satisfactory clinical outcomes.In scaffold-based bone tissue engineering,a high performance scaffold underpins the success of a bone tissue engineering strategy and a major direction in the field is to produce bone tissue engineering scaffolds with desirable shape,structural,physical,chemical and biological features for enhanced biological performance and for regenerating complex bone tissues.Three-dimensional(3D)printing can produce customized scaffolds that are highly desirable for bone tissue engineering.The enormous interest in 3D printing and 3D printed objects by the science,engineering and medical communities has led to various developments of the 3D printing technology and wide investigations of 3D printed products in many industries,including biomedical engineering,over the past decade.It is now possible to create novel bone tissue engineering scaffolds with customized shape,architecture,favorable macro-micro structure,wettability,mechanical strength and cellular responses.This article provides a concise review of recent advances in the R&D of 3D printing of bone tissue engineering scaffolds.It also presents our philosophy and research in the designing and fabrication of bone tissue engineering scaffolds through 3D printing.展开更多
目的:研究生物陶瓷材料(iRoot BP Plus)作为盖髓剂用于乳牙牙髓切断术的临床可操作性和疗效,为临床应用提供参考依据。方法:选择2016年9月至2017年9月到北京大学口腔医院第三门诊部儿科就诊患者,在乳磨牙的牙髓切断术中使用生物陶瓷材...目的:研究生物陶瓷材料(iRoot BP Plus)作为盖髓剂用于乳牙牙髓切断术的临床可操作性和疗效,为临床应用提供参考依据。方法:选择2016年9月至2017年9月到北京大学口腔医院第三门诊部儿科就诊患者,在乳磨牙的牙髓切断术中使用生物陶瓷材料作为盖髓剂,以治疗时间为观察开始时间,以最后一次拍摄X线片的时间为观察终点时间,对患牙进行定期随访观察1年以上,每次复诊时记录患牙的临床检查和X线片检查情况,将患牙预后归为N、H、P0、PX、PY五类,N为临床和X线均未见异常,H为临床未见异常,X线表现为牙根生理性吸收,P0为临床未见异常,X线出现牙髓钙化、牙根吸收等改变,但暂时无需治疗,PX为临床出现或未出现异常,X线出现根尖周病变,需要根管治疗或拔除,PY为乳牙早失;其中N、H定义为成功,P0、PX、PY定义为失败。结果:截至2018年9月,共纳入患牙40颗(患者34人),初诊年龄为3. 1～8. 5岁,平均(4. 7±1. 2)岁,观察时间12～24个月(中位时间16个月),患牙预后符合N的牙齿34颗,符合H的2颗,符合P0的1颗,符合PX的3颗,符合PY的0颗。使用生物陶瓷材料作为盖髓剂的乳磨牙牙髓切断术12个月成功率95%。结论:使用生物陶瓷材料作为盖髓剂进行乳牙牙髓切断术取得满意疗效,可以作为盖髓剂用于乳牙牙髓切断术的常规治疗。展开更多
文摘目的通过观察和对比深龋露髓的年轻恒牙应用iRoot BP Plus和矿物三氧化聚合体(MTA)直接盖髓的远期临床疗效,探讨iRoot BP Plus在年轻恒牙盖髓治疗上的优越性。方法对7~15岁患者的30颗年轻、深龋露髓患牙(包括去腐露髓和意外露髓的年轻恒牙),随机分为iRoot BP Plus组和MTA组,每组各15颗,分别行iRoot BP Plus和MTA直接盖髓术,随访2组1年内的临床疗效(包括牙髓症状、牙髓活力、钙化桥的形成和根尖孔闭合),对比分析2组钙化桥形成率和直接盖髓成功率,百分率统计采用秩和检验,两者盖髓时间统计采用独立样本t检验。结果术后1年,iRoot BP Plus组和MTA组治疗成功率分别为86.7%和80.0%,组间差异无统计学意义(χ~2=0.240,P=0.624);而2组直接盖髓操作时间分别为(2.55±0.33)和(4.88±0.25)min,差异有统计学意义(t=-21.983,P<0.001);iRoot BP Plus组盖髓就诊次数少于MTA组,iRoot BP Plus组和MTA组术后随访3个月X线完整钙化桥形成率为80.0%和73.3%(χ~2=0.186,P=0.666),6个月形成率分别为86.7%和80.0%(χ~2=0.240,P=0.624),12个月形成率分别为86.7%和80.0%(χ~2=0.240,P=0.624),组间差异均无统计学意义。iRoot BP Plus组患牙未见牙齿变色,MTA组患牙均观察到牙齿变色现象。结论 iRoot BP Plus直接盖髓的临床疗效与MTA相近,但iRoot BP Plus操作较为便利、就诊次数少且无牙齿变色现象,是临床上更为理想的直接盖髓剂。
基金This work was supported by Dongguan University of Technology High-level Talents(Innovation Team)Research Project(KCYCXPT201603)Youth Innovative Talent Project from the Department of Education of Guangdong Province,China(2016KQNCX168)Natural Science Foundation of Guangdong Province,China(2018A0303130019).
文摘Tissue engineering is promising in realizing successful treatments of human body tissue loss that current methods cannot treat well or achieve satisfactory clinical outcomes.In scaffold-based bone tissue engineering,a high performance scaffold underpins the success of a bone tissue engineering strategy and a major direction in the field is to produce bone tissue engineering scaffolds with desirable shape,structural,physical,chemical and biological features for enhanced biological performance and for regenerating complex bone tissues.Three-dimensional(3D)printing can produce customized scaffolds that are highly desirable for bone tissue engineering.The enormous interest in 3D printing and 3D printed objects by the science,engineering and medical communities has led to various developments of the 3D printing technology and wide investigations of 3D printed products in many industries,including biomedical engineering,over the past decade.It is now possible to create novel bone tissue engineering scaffolds with customized shape,architecture,favorable macro-micro structure,wettability,mechanical strength and cellular responses.This article provides a concise review of recent advances in the R&D of 3D printing of bone tissue engineering scaffolds.It also presents our philosophy and research in the designing and fabrication of bone tissue engineering scaffolds through 3D printing.
