OBJECTIVES To compare the microleakage among experimental adhesives containing nanoclay fillers after the storages of 24 hours and 6 months. MATERIALS AND METHODS Class V cavities were prepared on extracted human molars with the occlusal margins located in enamel and the cervical margins in cementum. Phosphoric acid was applied to the enamel and dentin margins.Subsequently, the cavities were ...

OBJECTIVE To compare the ability to eliminate debris and open dentinal tubules of different ultrasound irrigation procedures. STUDY DESIGN Forty extracted single-rooted human teeth were instrumented with mechanical rotatory instrumentation, and divided into four groups: (n=10) according to the final irrigation technique: group A (control), 2.5% NaOCl irrigation with the Miraject needle and no...

The purpose of this study was to compare the incidence of dentinal defects (fractures and craze lines) after canal preparation with different nickel-titanium rotary files. Two hundred sixty mandibular premolars were selected. Forty teeth were left unprepared (n = 40). The other teeth were prepared either with manual Flexofiles (n = 20) or with different rotary files systems: ProTaper (Dentsply-...

OBJECTIVES The aim of this study was to evaluate the performance of a visual-tactile examination and a laser fluorescence device for detecting residual dentinal caries after carious dentin removal with bur excavation, hand excavation and chemomechanical excavation (Carisolv()]. METHODS Thirty extracted coronal caries primary second molars were used. The caries infected dentin has been removed...

Despite the high incidence of dental pain, the mechanism underlying its generation is mostly unknown. Functional expression of temperature-sensitive transient receptor potential (thermo-TRP) channels, such as TRPV1, TRPV2, TRPM8, and TRPA1 in dental primary afferent neurons and TRPV1, TRPV2, TRPV3, TRPV4, and TRPM3 in odontoblasts, has been demonstrated and suggested as responsible for dental p...

Background and Aim:Root canal preparation with rotary instruments may cause dentinal cracks leading to tooth fracture. The aim of this study was to compare three different rotary systems ProTaper, RaCe and Niti Tee on formation of dentinal cracks following root canal preparation. Materials and Methods: In this experimental study, 50 extracted mandibular first molars were selected. Teeth having ...

introduction: the aim of this study was to investigate the scanning electron microscope (sem) analysis of tooth surface irradiated by different parameters of er:yag laser. methods: 15 caries-free extracted human third molars were used in this study. the teeth were put into 5 groups for laser irradiation as follows: group 1 (power: 2.5 w, energy: 250 mj); group 2(power: 3 w, energy: 300 mj); gro...