Fracture Behavior and Integrity of Different Direct Restorative Materials to Restore Noncarious Cervical Lesions

Polymers

Sufyan Garoushi¹  Balázs Szabó P.²  Emese Gál³  Márk Fráter³  Emese Battancs³  Tekla Sáry³  Gábor Braunitzer⁴ 

[1] Department of Biomaterials Science and Turku Clinical Biomaterials Center—TCBC, Institute of Dentistry, University of Turku, FI-20520 Turku, Finland;Department of Food Engineering, Faculty of Engineering, University of Szeged, H-6725 Szeged, Hungary;Department of Operative and Esthetic Dentistry, Faculty of Dentistry, University of Szeged, H-6720 Szeged, Hungary;dicomLAB Dental Ltd., H-6726 Szeged, Hungary;

关键词: noncarious cervical lesion;    flowable composite;    glass-ionomer cement;    direct restoration;    fatigue resistance;    microleakage;   

DOI  :  10.3390/polym13234170

来源: DOAJ

【 摘 要 】

The purpose of this study was to analyze the fracture resistance and marginal leakage of noncarious cervical lesion (NCCL) restorations made of different restorative materials. Eighty upper premolars were randomly divided into four groups (n = 20/group). Standardized NCCL cavity preparations were performed on the buccal surface of the teeth and then restored with four different materials. Group 1: Packable resin composite (PC); Group 2: Highly flowable resin composite (HF); Group 3: Low flowable resin composite (LF); Group 4: Resin modified glass ionomer cement (RMGIC). After restorations were completed, cyclic and static fracture behavior was evaluated using a loading testing machine. Extra restored teeth were sectioned and then stained (n = 5/group). The specimens were viewed under a stereo microscope and the percentage of microgaps at the tooth–restoration interface was calculated. All restored teeth survived after fatigue loading. There was no statistically significant (p > 0.05) difference between the tested restorations after the static loading test. NCCLs restored with highly filled flowable composite showed the least microleakage among the tested groups (p < 0.05). The investigated restorative materials are acceptable for NCCL restorations in terms of fracture resistance and microleakage.

【 授权许可】

Unknown