An eight-year clinical evaluation of filled and unfilled one-bottle dental adhesives

Challenges to the clinical placement and evaluation of adhesively-bonded, cervical composite restorations

“…The incidence of marginal discoloration increased over time, ranging from 28 to 55% at 8 year recalls [28,34,36,39]. In our clinical studies, we used a similar protocol [27,31] and discovered that, after 5 years of clinical service, one-step self-etch adhesives resulted in more marginal discoloration (40-50%) than 2-step self-etch (19%) and 2-step etch-and-rinse (17%) adhesives.…”

“…Therefore, we have been performing clinical trials of resin composite restorations in NCCLs over as long a period of time as possible [28,31,32]. Recently, several long-term (7 years or more) clinical trials of NCCLs have been published [33][34][35][36][37][38][39]. All of them demonstrated that adhesive bonds continuously degraded with wide variation and that this bond degradation was independent of the adhesion strategy used.…”

“…In addition, marginal adaptation seems to be a less common reason to replace cervical resin composite restorations than marginal discoloration [3]. With respect to other categories, such as secondary caries, color match, surface roughness and postoperative sensitivity, clinical problems rarely occurred even in long-term clinical trials [34,[36][37][38][39] …”

“…In order to get more insight into this clinical problem, we first performed a series of laboratory studies on clinical placement techniques of cervical resin composite restorations by means of microleakage tests [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26] and then we have been conducting clinical trials [27][28][29][30][31][32]. The aim of this article is to discuss the challenges we faced in the clinical placement and evaluation of cervical resin composite restorations as they relate to clinical studies, especially recently published, long-term clinical trials [33][34][35][36][37][38][39].…”

A New Level of Knowledge in the Field of Adhesive Systems – A Real Success in Practical Dentistry

“…Традиционно считается, что наполнитель улучшает прочностные характеристики адгезивного слоя, однако при условии относительно низкой наполненности адгезивов и толщины их слоя этот вопрос требует дополнительного изучения [4,[25][26][27]. Включение наполнителя в систему может сильно менять вязкость адгезива, тем самым увеличивая толщину образуемой им пленки [25,26].…”