Sinche-Ccahuana Isabel, Ladera-Castañeda Marysela, Paucar-Rodríguez Elizabeth, Aliaga-Mariñas Ana, Dapello-Zevallos Giannina, Cervantes-Ganoza Luis, Cayo-Rojas César
Universidad Nacional Federico Villarreal, Faculty of Dentistry and Postgraduate School, "Salud Pública - Salud Integral", Lima, Peru.
Universidad Privada San Juan Bautista, School of Stomatology, Lima, Peru.
J Clin Exp Dent. 2023 Aug 1;15(8):e641-e648. doi: 10.4317/jced.60725. eCollection 2023 Aug.
To evaluate the degree of marginal microleakage in indirect Class II onlay restorations cemented with dual self-adhesive, universal adhesive and dual adhesive.
In the present in vitro experimental study, a total of 54 human premolar teeth were prepared and divided into three equal groups (n = 18) for placement of onlay-type restorations cemented with A: Allcem™ dual-cure adhesive cement), B: RelyX™U200 dual-cure self-adhesive cement and C: RelyX™ Ultimate universal adhesive cement. All restorations were subjected to 10,000 thermocycles between 5°C and 55°C and immersed in a 1M silver nitrate solution for 6 hours. The crowns were then sectioned mesiodistally and observed under a stereo microscope to determine the degree of marginal microleakage in the cervical area.
The onlay restorations cemented with RelyX Ultimate did not present microleakage in the majority of cases (77.8%). Restorations cemented with RelyX U200 showed predominantly microleakage up to the pulp floor in 83.3% of the total, being this significantly higher microleakage than in restorations cemented with RelyX Ultimate and Allcem Dual (<0.001 and <0.001 respectively). There was no significant difference in microleakage between the last two mentioned cements (=0.255).
Allcem dual adhesive cement and RelyX Ultimate universal adhesive showed significantly less microleakage than RelyX U200 dual-curing self-adhesive cement at the cervical level, with predominantly no microleakage and microleakage down to the enamel, respectively. The use of RelyX Ultimate cement in indirect restorations is recommended as it showed better marginal adaptation. Microleakage, human teeth, adhesion, adhesive cement, thermal cycling, onlay restoration.
评估用双组分自粘接型、通用型粘接剂和双组分粘接剂粘接的Ⅱ类间接高嵌体修复体的边缘微渗漏程度。
在本体外实验研究中，制备了54颗人前磨牙，并将其平均分为三组（n = 18），用于放置用以下材料粘接的高嵌体型修复体：A组：Allcem™双固化粘接剂；B组：RelyX™U200双固化自粘接型粘接剂；C组：RelyX™ Ultimate通用型粘接剂。所有修复体均在5℃至55℃之间进行10000次热循环，然后浸泡在1M硝酸银溶液中6小时。接着将牙冠近远中向切片，在体视显微镜下观察，以确定颈部区域的边缘微渗漏程度。
用RelyX Ultimate粘接的高嵌体修复体在大多数情况下（77.8%）未出现微渗漏。用RelyX U200粘接的修复体在总体的83.3%中主要表现为直至髓室底的微渗漏，该微渗漏显著高于用RelyX Ultimate和Allcem Dual粘接的修复体（分别<0.001和<0.001）。上述最后两种粘接剂之间的微渗漏无显著差异（P = 0.255）。
在颈部水平，Allcem双组分粘接剂和RelyX Ultimate通用型粘接剂的微渗漏明显少于RelyX U200双固化自粘接型粘接剂，分别主要表现为无微渗漏和微渗漏至釉质层。建议在间接修复中使用RelyX Ultimate粘接剂，因为它显示出更好的边缘适应性。微渗漏、人牙、粘接、粘接剂、热循环、高嵌体修复。
