Llena Carmen, García-Gallart María, Forner Leopoldo, Ferrari Marco
MD, DDS, PhD. Department of Stomatology. Universitat de València (Spain). C. Gascó Oliag, 1. 46010 Valencia (Spain).
DDS. Department of Stomatology. Universitat de València (Spain). C. Gascó Oliag, 1. 46010 Valencia (Spain).
J Clin Exp Dent. 2018 Dec 1;10(12):e1198-e1204. doi: 10.4317/jced.55208. eCollection 2018 Dec.
To measure the penetration of three bonding systems for the luting of fiber glass posts in endodontically treated teeth, using confocal laser scanning microscopy (CLSM).
A total of 30 maxillary incisors were shaped with the Mtwo system and filled with gutta-percha and Top Seal cement. The sample was divided into three groups (ni=10) according to the bonding system used to cement the posts: Group 1 (Prime&Bond NT and Rebilda DC with a total-etch technique); Group 2 (Futurabond DC and Rebilda DC with a dentin self-etch technique); and Group 3 (BisCem self-adhesive cement). Rhodamine B was added to the bonding systems to allow visualization by CLSM. Three 1-mm thick cross-sections were obtained of each root at a distance of 2, 5 and 8 mm from the coronal limit of the root. The specific software of the CLSM system was used to measure the percentage of the root canal perimeter showing penetration of the bonding system in the dentinal tubules, together with the maximum depth of penetration. Comparison between groups were made by Kruskal Wallis test, and comparison two by two groups with Mann-Whitney U-test.
Depth of penetration of the resin tags, were distributed from greater to lesser depth as follows: BisCem > Prime&Bond NT > Futurabond DC. BisCem showed significantly greater penetration in the middle and apical thirds than the rest of the systems (906.14±67.42 and 699.27±76.26 µm, respectively). The percentage perimeter exhibiting penetration in the coronal third was significantly greater with BisCem versus Futurabond DC (56.08±7.24 and 44.38±5.23%, respectively). No significant differences were recorded in the middle and apical thirds among the three systems.
BisCem resulted in greater depth of intratubular penetration at all studied levels. The percentage perimeter of the canal showing penetration was similar for all the bonding systems. Fiber post luting, sealer adaptation, confocal laser scanning microscope.
使用共聚焦激光扫描显微镜（CLSM）测量三种粘结系统在根管治疗后的牙齿中粘结玻璃纤维桩的渗透情况。
选取30颗上颌切牙，用Mtwo系统进行根管预备，并用牙胶和Top Seal封闭剂充填。根据粘结桩所用的粘结系统将样本分为三组（每组n = 10）：第1组（使用全酸蚀技术的Prime&Bond NT和Rebilda DC）；第2组（使用牙本质自酸蚀技术的Futurabond DC和Rebilda DC）；第3组（BisCem自粘结水门汀）。在粘结系统中加入罗丹明B以便通过CLSM观察。从牙根冠方边界起2、5和8 mm处，对每个牙根获取三个1 mm厚的横截面。使用CLSM系统的特定软件测量粘结系统在牙本质小管中渗透的根管周长百分比以及最大渗透深度。组间比较采用Kruskal Wallis检验，两两比较采用Mann-Whitney U检验。
树脂突的渗透深度从大到小依次为：BisCem > Prime&Bond NT > Futurabond DC。BisCem在牙根中1/3和根尖1/3处的渗透明显大于其他系统（分别为906.14±67.42和699.27±76.26 µm）。在冠1/3处，BisCem显示出渗透的周长百分比显著大于Futurabond DC（分别为56.08±7.24和44.38±5.23%）。在牙根中1/3和根尖1/3处，三种系统之间未记录到显著差异。
在所有研究水平上，BisCem导致管内渗透深度更大。所有粘结系统显示渗透的根管周长百分比相似。纤维桩粘结、封闭剂适应性、共聚焦激光扫描显微镜。
