One-Year Clinical Performance of the Fast-Modelling Bulk Technique and Composite-Up Layering Technique in Class I Cavities

Louis Hardan; Layla Sidawi; Murad Akhundov; Rim Bourgi; Maroun Ghaleb; Sarah Dabbagh; Krzysztof Sokolowski; Carlos Enrique Cuevas-Suárez; Monika Lukomska-Szymanska

doi:10.3390/polym13111873

One-Year Clinical Performance of the Fast-Modelling Bulk Technique and Composite-Up Layering Technique in Class I Cavities

Polymers (Basel). 2021 Jun 4;13(11):1873. doi: 10.3390/polym13111873.

Authors

Louis Hardan¹, Layla Sidawi², Murad Akhundov³, Rim Bourgi¹, Maroun Ghaleb¹, Sarah Dabbagh¹, Krzysztof Sokolowski⁴, Carlos Enrique Cuevas-Suárez⁵, Monika Lukomska-Szymanska⁶

Affiliations

¹ Department of Restorative Dentistry, School of Dentistry, Saint-Joseph University, Beirut 1107 2180, Lebanon.
² Department of Prosthetic Dentistry, School of Dentistry, Saint-Joseph University, Beirut 1107 2180, Lebanon.
³ Dental Update Clinic, Mammad Araz Street 102, Baku AZ 1069, Azerbaijan.
⁴ Department of Restorative Dentistry, Medical University of Lodz, 251 Pomorska St., 92-213 Lodz, Poland.
⁵ Dental Materials Laboratory, Academic Area of Dentistry, Autonomous University of Hidalgo State, Circuito Ex Hacienda La Concepción S/N, San Agustín Tlaxiaca 42160, Hidalgo, Mexico.
⁶ Department of General Dentistry, Medical University of Lodz, 251 Pomorska St., 92-213 Lodz, Poland.

Abstract

The aim of this study was to assess the one year clinical performance of a new application method, the Fast-Modelling Bulk Technique (FMBT), in comparison to the Composite-Up Layering Technique (CULT) in posterior cavities. Thirty patients with two class I cavities on permanent human molars were enrolled in the present study. A total of sixty class I cavities were prepared and randomly divided according to the restoration technique used: 30 cavities restored by incremental layering technique and modelling of the last layer with Composite-Up Technique (CUT) using the composite Filtek Z250XT (3M ESPE; St. Paul, MN, USA) and the other 30 restored by Bulk Filling technique and modelling of the last layer by Fast-Modelling Technique (FMT) using the composite Filtek Bulk Fill Posterior Restorative (3M ESPE; St. Paul, MN, USA). Restorations were evaluated for up to one year by two observers according to Federation Dentaire Internationale (FDI) criteria, through clinical and radiological exams. Exact Fisher tests were used for statistical analysis. (p ≤ 0.05). From a biological perspective, at baseline, teeth restored with both techniques did not reveal any postoperative sensitivity. However, with time, FMBT showed less postoperative sensitivity and therefore more desirable results than CULT with a nonsignificant difference after one year (p > 0.05). Concerning secondary caries, fracture of the material, and marginal adaptation, no significant difference was noted between both techniques (p > 0.05). Regarding marginal staining, CULT resulted in more staining with a significant difference, as compared to FMBT (p < 0.05). Upon radiological examination, FMBT showed a good marginal fit during the first year, whereas CULT showed small empty voids from baseline with a nonsignificant difference (p = 1.00). After one year of clinical function, both techniques showed promising results. The present study indicates that the new FMBT could have a positive effect on the marginal staining of resin composite.

Keywords: bulk fill; class I; nanohybrid composite; polymerization stress; resin composites.