Manchorova Neshka A, Vladimirov Stoyan B, Donencheva Zoya K, Drashkovich Ivan S, Manolov Stanislav K, Todorova Veselina I
Department of Operative Dentistry and Endodontology, Faculty of Dental Medicine, Medical University, Plovdiv, Bulgaria.
Folia Med (Plovdiv). 2008;50(1):46-52.
In the era of adhesive restorative dentistry the principles of conventional cavity preparation have acquired a new meaning. The emphasis is shifted from "widening for preventive purposes" and preparation of macro-mechanical retention to "consciously limited" preparation. The clinical and biological durability of restorations depends on the adhesive bond and the quality of the composite material.
The aim of the study was to conduct a clinical evaluation of restorations with a self-etch single-step adhesive and nanofilled composite in class I and class II cavities over a period of 15 months.
The clinical trial involved 34 patient (volunteers) who received 76 posterior restorations of medium and deep cavities with the self-etch adhesive Adper Prompt L-Pop and nanofilled composite Filtek Supreme (3MESPE Dental products USA). All restorations were evaluated by the modified Ryge and Cvar criteria at 6- and 15-month intervals.
Loss of restorations with a self-etch single-step adhesive and nanofilled composite at 6 months and 15 months was 0% and 6.7%, respectively. The evaluation of discolouration in the restorations at 6 months revealed no significant changes (P > 0.05, u = 1.72). There was certain deterioration in the colour at 15 months (P < 0.05, u = 2.96). Statistically significant changes in the marginal discolouration were observed at 6 months (P < 0.05, u = 2.79) in comparison with the initial scores. During the 15-month follow-up the discolouration on the margins of the restorations was statistically nonsignificant compared to the 6-month follow-up (P > 0.05, u = 0.36). There were no C (Charlie) scores recorded during the 15-month follow-up study within the continuing observation.
The restorations with nanofilled composite and self-etch single-step adhesive fulfill the requirements for clinical use in posterior restorations.
在粘结修复 Dentistry 时代，传统窝洞制备原则有了新的意义。重点从“为预防目的而加宽”和制备宏观机械固位转向“有意识地限制”制备。修复体的临床和生物学耐久性取决于粘结剂和复合材料的质量。
本研究的目的是对使用自酸蚀单步粘结剂和纳米填充复合材料修复 I 类和 II 类窝洞 15 个月进行临床评估。
临床试验涉及 34 名患者（志愿者），他们接受了 76 颗中、深窝洞的后牙修复，使用自酸蚀粘结剂 Adper Prompt L-Pop 和纳米填充复合材料 Filtek Supreme（美国 3MESPE 牙科产品）。所有修复体均按照改良的 Ryge 和 Cvar 标准在 6 个月和 15 个月时进行评估。
使用自酸蚀单步粘结剂和纳米填充复合材料的修复体在 6 个月和 15 个月时的脱落率分别为 0%和 6.7%。6 个月时修复体变色评估显示无显著变化（P > 0.05，u = 1.72）。15 个月时颜色有一定恶化（P < 0.05，u = 2.96）。与初始评分相比，6 个月时边缘变色有统计学显著变化（P < 0.05，u = 2.79）。在 15 个月的随访期间，修复体边缘的变色与 6 个月随访相比无统计学意义（P > 0.05，u = 0.36）。在 15 个月的随访研究持续观察期间未记录到 C（查理）评分。
纳米填充复合材料和自酸蚀单步粘结剂的修复体满足后牙修复临床使用要求。
