The newer biomaterials, Biodentine and Endosequence with better handling properties, could be used as alternatives to MTA-Angelus while repairing furcation perforations.

The newer biomaterials, Biodentine and Endosequence with better handling properties, could be used as alternatives to MTA-Angelus while repairing furcation perforations.

Consumption of acidic beverages has been reported to alter the physical and esthetic properties of resin composites, which in turn can affect clinical success.

This study aimed to evaluate the effect of acidic beverages on surface roughness and color stability of Filtek™ Bulk-Fill posterior restorative composite in comparison with Filtek P60 posterior restorative composite.

Ninety composite discs were used for surface change analysis and another ninety were used for color change analysis.

Ninety Filtek P60 and Filtek Bulk-Fill composite discs were fabricated and divided into three subgroups according to the solutions – artificial saliva (control group), orange juice, and Coca-Cola

(test groups). The samples were immersed in each beverage for 10 min each day for 56 days. To measure the surface roughness, a profilometer was used, and the surface was qualitatively analyzed using a scanning electron microscope. A reflectance spectrophotometer was used for assessing the color change.

Two-way analysis of variance was used to compare the surface alteration and color change values between the two composite groups and their respective three subgroups. Tukey’s multiple

test was performed for pair-wise comparison.

Filtek P60 had exhibited higher color change than Filtek Bulk-Fill in all immersion solutions. Coca-Cola resulted in highest staining in both the composites.

The surface roughness and color change of both composites increased significantly in acidic beverages and more in Coca-Cola. Bulk-fill exhibited better surface quality and color stability than P60.

The surface roughness and color change of both composites increased significantly in acidic beverages and more in Coca-Cola. BX-795 mw Bulk-fill exhibited better surface quality and color stability than P60.

Failures of root canal treatments are mainly attributed to missed canals and ignorance about the complex anatomy of the root canal system. One such example of anatomic variation is the middle mesial canal (MMC) in mandibular molars which is often missed, and literature on methods for identifying them is limited.

This

study aimed to assess the occurrence of MMCs with cone-beam computed tomography (CBCT) and then under magnification in the mandibular first and second molars.

A total of 120 extracted intact human permanent mandibular first and second molars were selected. These were subjected to CBCT imaging and magnification for the detection of MMCs. The percentage of incidence in the detection of MMC was compared between these two methods.

The incidence of MMC detected in mandibular molars using CBCT was 13.33% (16 of 120 teeth), while using a dental operating microscope, the incidence was 18.33% (22 of 120 teeth) and the comparison between the two methods was statistically not significant. The MMC case to preoperative CBCT evaluation owing to its ionizing radiation.

Substantivity is one of the desirable characteristics of root canal irrigants. Among conventional endodontic irrigants, only chlorhexidine (CHX) is known to exert significant substantivity on root canal dentin. This study explored the substantivity activity of a polymeric biguanide-poly hexamethylene biguanide (PHMB).

The aim of this study was to determine the substantivity of a polymeric biguanide – 0.2% PHMB and compare it with that of 2% CHX.

To evaluate and compare the substantivity of 0.2% PHMB and 2% CHX on root canal dentin, dentin disks were prepared and substantivity after 1 h, 24 h, 7 days and 21 days was measured using spectrophotometry.

The data so obtained were analyzed, and the intergroup comparison was made using unpaired

-test.

The results of this study indicated that 0.2%. PHMB exerts significantly greater substantivity than 2% CHX on human dentin.

Within the limitations, this study supports the use of 0.2% polyhexanide as an endodontic irrigant based on its property of substantivity.

Within the limitations, this study supports the use of 0.2% polyhexanide as an endodontic irrigant based on its property of substantivity.

Tooth avulsion is considered as a severe form of dental trauma, causing damage to the periodontium. Hence, the preservation of healthy periodontal ligament (PDL) cells in the storage medium are pivotal for the success of replantation.

The aim of this study is to assess the viability of human PDL cells in black tea, lime juice, and passion fruit concentrate.

Human periodontal cells were cultured and stored in three experimental media – black tea, lime juice, and passion fruit concentrate and subjected to 3-(4, 5-dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide assay for 1 h and the cell viability was determined. Mean and standard deviation were statistically analyzed using one-way analysis of variance to identify the significant groups.

The human PDL cells showed 100% viability in lime juice and passion fruit concentrate, followed by 98% viability in black tea.

Black tea, lime juice, and passion fruit concentrate can be used effectively as storage media for maintaining PDL cells viability in avulsed teeth, with 100% viability exhibited by lime juice and passion fruit concentrate.

Black tea, lime juice, and passion fruit concentrate can be used effectively as storage media for maintaining PDL cells viability in avulsed teeth, with 100% viability exhibited by lime juice and passion fruit concentrate.

The aim of this study is to evaluate bond strength (BS), shrinkage stress (SS), flexural strength (FS), and elastic modulus (E) of three flowable bulk fill in comparison with conventional composites.

Three bulk fill (Filtek Bulk Fill Flow, Surefil SDR, X-tra Base) and three conventional composites (Filtek Z250 XT, Grandioso, Dentsply TPH3) were used. For BS, conical cavities (

= 10) were prepared in bovine dentine and restored with materials and were analyzed through push-out test in a universal testing machine (UTM). For FS/EM, 60 (

= 10) bar specimens (7 mm × 2 mm × 1 mm) were prepared and evaluated with a UTM. SS was measured in UTM coupled to an extensometer (

= 5). The data were statistically evaluated using one-way ANOVA/Tukey tests (

< 0.05).

Conventional composites showed higher E when compared to bulk-fill composites. Regarding FS, they showed similar results, except for (XBF) Xtra Bulk Fill that was inferior. SS and BS of bulk-fill composites were significantly lower and higher than conventional composites, respectively, except for XBF, which showed similar BS to conventional ones.