The influence of endodontic access cavity design on the efficacy of canal instrumentation, microbial reduction, root canal filling and fracture resistance in mandibular molars

臼齿 根管 牙科 粪肠球菌 次氯酸钠 牙体牙髓科 口腔正畸科 材料科学 还原(数学) 医学 数学 化学 有机化学 基因 大肠杆菌 生物化学 几何学
作者
Ana Flávia Almeida Barbosa,Emmanuel João Nogueira Leal Silva,BeatrizSerrato Coelho,Cláudio Malizia Alves Ferreira,Carolina Oliveira de Lima,Luciana Moura Sassone
出处
期刊:International Endodontic Journal [Wiley]
卷期号:53 (12): 1666-1679 被引量:61
标识
DOI:10.1111/iej.13383
摘要

Abstract Aim To assess the impact of conservative endodontic access cavities (CEC) and truss access cavities (TAC) during root canal treatment performed on mandibular molars in terms of: ability to shape and fill root canals, microbial reduction in canals, and cleaning of the pulp chamber. In addition, the fracture resistance of the teeth after coronal restoration was assessed. Traditional endodontic cavities (TEC) were used as a reference technique for comparison. Methodology Thirty extracted intact mandibular molars were scanned in a microcomputed tomography device (micro‐CT), matched based on similar anatomical features and assigned to TEC, CEC or TAC groups ( n = 10). The specimens were accessed accordingly, and root canals were contaminated with bacterial suspensions of Enterococcus faecalis (21 days). Subsequently, the first microbial sample was collected from root canals (S1). The canals were initially prepared with Reciproc Blue R25 instrument followed by a second instrumentation using Reciproc Blue R40. Eight mL of 0.5% NaOCl were used as an irrigant for each instrument. A final irrigation protocol was performed with 2 mL of 0.5% NaOCl, 2 mL of 17% EDTA and another 2 mL of 0.5% NaOCl. Microbial samples were collected from root canals after R25 (S2), R40 (S3) and final irrigation (S4). The teeth were rescanned after S4. Then, root canals were filled, rescanned, restored and the teeth subjected to fracture resistance tests. The statistical analysis was performed with type I negative binomial and beta 0‐1 inflation regression models for microbiological analysis. Instrumentation, filling and resistance to fracture results were subjected to anova and Tukey tests ( P < 0.05). Results S4 revealed no significant variations in microbial reduction amongst the groups ( P > 0.05). TEC had a significantly lower percentage of unprepared surface area than CEC ( P < 0.05). No differences were found regarding the percentage of dentine removed, transportation, centring ability and filling voids amongst the groups ( P > 0.05). The TEC group had a significantly lower volume of remaining root filling material within the pulp chamber than CEC and TAC groups ( P < 0.05). There was no difference regarding fracture resistance amongst the groups ( P > 0.05). Conclusion Conservative access cavities did not offer any advantage in comparison with the traditional endodontic cavities in any of the parameters considered. Furthermore, conservative methods were associated with larger percentages of unprepared canal surface area and larger volumes of remaining root filling material within the pulp chamber.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
jiangmj1990发布了新的文献求助10
刚刚
1秒前
赵医生发布了新的文献求助10
1秒前
Xian发布了新的文献求助10
2秒前
干净的寒天发布了新的文献求助200
3秒前
SaiKerry发布了新的文献求助10
3秒前
大喵发布了新的文献求助10
4秒前
wanci应助一颗椰子糖耶采纳,获得10
4秒前
4秒前
忐忑的成仁完成签到,获得积分10
6秒前
乐乐应助_Y_X_L_采纳,获得10
6秒前
6秒前
星辰大海应助漂亮白枫采纳,获得10
10秒前
i3utter发布了新的文献求助10
10秒前
Rondab应助momo采纳,获得10
10秒前
FashionBoy应助大喵采纳,获得10
14秒前
他克莫司发布了新的文献求助100
15秒前
16秒前
16秒前
16秒前
17秒前
赘婿应助zoey采纳,获得10
18秒前
20秒前
烟花应助TT木木采纳,获得10
20秒前
SciGPT应助健忘的水蜜桃采纳,获得10
21秒前
小刘发布了新的文献求助10
22秒前
一直向前发布了新的文献求助10
22秒前
精明怜南发布了新的文献求助10
22秒前
23秒前
李健的粉丝团团长应助11采纳,获得10
23秒前
_Y_X_L_发布了新的文献求助10
24秒前
25秒前
25秒前
图图完成签到 ,获得积分10
25秒前
26秒前
行者完成签到,获得积分10
26秒前
恋雅颖月应助陈桉采纳,获得10
28秒前
28秒前
迷你的颖发布了新的文献求助10
30秒前
30秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
‘Unruly’ Children: Historical Fieldnotes and Learning Morality in a Taiwan Village (New Departures in Anthropology) 400
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 350
Robot-supported joining of reinforcement textiles with one-sided sewing heads 320
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3989797
求助须知:如何正确求助?哪些是违规求助? 3531914
关于积分的说明 11255516
捐赠科研通 3270597
什么是DOI,文献DOI怎么找? 1805008
邀请新用户注册赠送积分活动 882181
科研通“疑难数据库(出版商)”最低求助积分说明 809190