Sheridanjohannesen6820

89690 N/mm) and the FRC resin groups (3.19860 N/mm). Adhesive failures predominated in the acrylic resin group regardless of the primer used. The FRC group showed predominantly cohesive failures with both the A330G primer and Sofreliner tough primer.

This study suggests that FRC resin combined with Sofreliner tough primer can significantly enhance the peel bond strength.

This study suggests that FRC resin combined with Sofreliner tough primer can significantly enhance the peel bond strength.

This study assessed the validity and reliability of color selection by smartphone photography using two smartphone applications and Adobe Photoshop software.

In vitro comparative study.

The validity and reliability of dental tooth shade recognition (DTSR), Chromatcher, and Adobe Photoshop were evaluated for color selection of shade tabs. The iPhone 7 camera in automatic mode was used for photography. Images were captured using Smile Lite with/without polarized filter and with camera flash. To assess the reliability, nine Vita Lumin Vacuum shade tabs were chosen and each was photographed for 10 times using Smile Lite. The reliability of DTSR, Chromatcher, and Photoshop in shade-taking was calculated. To assess their validity, 16 shade tabs of Vita Lumin Vacuum and 26 shade tabs of Vita 3D Master were photographed using the aforementioned lighting conditions. The color of photographs was calibrated and shade-taking was performed and compared with the shade suggested by SpectroShade as reference.

Data were analyzed using Two-way analysis of variance and Bonferroni post hoc test.

The reliability of Photoshop, DTSR, and Chromatcher was 98.88%, 63.3%, and 100%, respectively. The validity of Photoshop was significantly higher than other software programs (P < 0.05). Chromatcher had higher validity than DTSR (P < 0.05).

Shade-taking by calibrated smartphone pictures and Adobe Photoshop has high validity and reliability.

Shade-taking by calibrated smartphone pictures and Adobe Photoshop has high validity and reliability.

The aim of this study was to evaluate and compare the shear bond strength between ceramic layered over titanium and ceramic layered over cobalt-chromium alloy, which are used in the fabrication of screw-retained implant prosthesis.

In-vitro - Comparative study.

A total of 40 samples (20 samples of Titanium in Group 1 and 20 samples of Cobalt-Chromium in Group 2) were fabricated. For all the samples bonding agent was applied on to the sand blasted surface and firing was done at a temperature of 980° C. A layer of opaque was applied using a brush and placed back in the furnace at a temperature of 910° C. Then ceramic was layered on to the surface with putty index as guide and firing was done in the ceramic furnace up to a temperature of 880° C followed by glazing. SB203580 datasheet Shear bond strength was measured using a Universal Testing Machine.

One sample t-test and paired sample t-test.

Descriptive statistics were done to calculate mean differences between groups and samples. link2 The mean bond strength of titanium- ceramic samples was more than those of cobalt-chromium-ceramic samples. Inferential statistics used in the study were one sample t-test for intra-group comparison and paired sample t-test for inter group comparison which showed no statistically significant difference between the two metal types (P value = 0.163).

The shear bond strength of ceramic veneered over titanium meets the ISO requirements of minimum shear bond strength between metal-ceramic systems and has achieved the clinically acceptable values. The use of titanium super structure over titanium implants reduces the adverse effects and avoids undesirable effects.

The shear bond strength of ceramic veneered over titanium meets the ISO requirements of minimum shear bond strength between metal-ceramic systems and has achieved the clinically acceptable values. The use of titanium super structure over titanium implants reduces the adverse effects and avoids undesirable effects.

Assess the retention of endocrowns fabricated of different CAD/CAM materials.

In vitro - comparative study.

Root canal treated mandibular first molars were prepared in a standardized method. Standardized endocrowns were manufactured using four CAD-CAM blocks resin infiltrated ceramic (Vita Enamic), partially stabilized tetragonal zirconia (Katana), lithium disilicate ceramic (IPS e.max CAD), and polyether-ether-keton (PEEK, BioHPP). After proper surface treatment, the restorations were cemented using a resin cement (Panavia F2.0) and were connected to a special attachment unit and secured to a universal testing machine. The amount of axial load required to dislodge the restoration from the tooth structure was measured (n = 12, α = 0.05). Failures were classified as adhesive debonding from the tooth structure without damaging the supporting tooth structure and cohesive fracture of the supporting tooth structure.

One-way analysis of variance,Tukey's post hoc test.

The retention of Vita Enamic (61 ± 11s. Meanwhile, using yttrium partially stabilized zirconia and polyether ether ketones for the same purpose recorded a favorable mode failure which avoided the possibility of tooth fracture.

This research was aimed to determine the potential for treating osteogenesis with a combination of zinc oxide and turmeric (ZOT) rhizome liquid extract.

In vivo, post test-control group design.

The mandibular incisors of Wistar rats were extracted and left untreated or received an application of zinc oxideeugenol (ZOE) 10% or ZOT rhizome liquid extract at various concentrations (10%, 20%, and 40%). The mandible was then subjected to immunohistochemical analysis to detect RUNX2 and alkaline phosphatase (ALP) activity.

One-way ANOVA and Tukey HSD using SPSS software.

All groups demonstrated increasing RUNX2 and ALP activity. ZOT 40% showed the highest activity in all groups on day 3 and day 7, although there were no significant differences with ZOE 10%.

A combination of ZOT rhizome liquid extract can induce the osteogenic process in postextraction sockets. The results highlight the need for further investigation of the potential osteogenesis of curcumin in humans.

A combination of ZOT rhizome liquid extract can induce the osteogenic process in postextraction sockets. The results highlight the need for further investigation of the potential osteogenesis of curcumin in humans.

This study aimed to evaluate the combined influence of condylar and incisal guidance in canine-guided and group function occlusal schemes.

In vivo - Cross sectional study.

A total number of 88 subjects were selected and classified into two groups 44 subjects with canine guided and 44 subjects with group function occlusal schemes. link3 Condylar and incisal guidance tracings of both the groups were recorded using SAM AXIOQUICK RECORDER (School Articulator Munich) and evaluated.

Kolmogorov-Smirnov test and Shapiro-Wilk test were employed to test the normality of data. Independent sample t-test and Mann-Whitney U-test was performed for quantitative variables.

The condylar and incisal guidance among canine-guided individuals was 31.38 ± 12.01 and 55.83 ± 14.04, respectively, while in group function individuals, it was 29.44 ± 12.65 and 43.74 ± 20.27.

Within the limitations of the present study, condylar guidance was similar in subjects with both schemes of occlusion, whereas steeper incisal guidance was noticed in canine-guided individuals as compared to group function.

Within the limitations of the present study, condylar guidance was similar in subjects with both schemes of occlusion, whereas steeper incisal guidance was noticed in canine-guided individuals as compared to group function.

To compare speech intelligibility (SI), nasal resonance, and swallowing ability in maxillectomy patients with a customized obturator to the conventional obturator.

Non-randomized controlled study.

Forty-eight maxillectomy patients were recruited and assessment of SI, nasal resonance, and swallowing ability was done at three situations without obturator, with conventional obturator, and with customized obturator. Recordings of unrehearsed conversation, counting from number 1-20 and four sets of Chapel Hill Multilingual Intelligibility Test in the Hindi language were used to assess SI and nasal resonance. SI was evaluated by untrained listeners and graded according to a 6-point scale. Nasal resonance was evaluated by speech pathologists on a 7-point scale of severity. Swallowing ability was evaluated by water drinking test.

One-way ANOVA, Post hoc Bonferroni and Chi square test.

SI and nasal resonance showed a statistically significant difference between any two groups (P < 0.001). Water drinking time was significantly different between without obturator and with customized obturator (P < 0.001), but the difference was not statistically significant between without obturator and with obturator (P < 0.004).

SI, nasal resonance, and swallowing ability improved with customized obturator in comparison to the conventional obturator.

SI, nasal resonance, and swallowing ability improved with customized obturator in comparison to the conventional obturator.

The aim of the present study was to clinically assess the performance of BioHPP PEEK material when used for inlay restoration and to compare it with widely used zirconia inlays. This clinical study was undertaken to evaluate their performance in terms of retention, colour matching, marginal discoloration, marginal adaptation, secondary caries, surface texture, wear-anatomic form, postoperative sensitivity and fracture resistance using the modified Ryge's criteria.

In vivo - prospective clinical study.

A total of 40 patients were selected based on inclusion and exclusion criteria requiring inlays. The patients were further divided in two groups Group A - Consisted of 20 permanent maxillary and mandibular carious posterior teeth restored with BioHPP PEEK inlays and Group B - Consisted of 20 permanent maxillary and mandibular carious posterior teeth restored with CAD/CAM zirconia inlays (sintered monolithic zirconia, Zolid, Amann Girrbach AG, Koblach, Austria). Two prosthodontists, who were blinded to the ry with relatively low rate of fracture over an observation period of one year in comparison to zirconia inlays in posterior teeth. The BioHPP PEEK can be a suitable alternative with high level of accuracy in terms of retention, marginal quality and aesthetics.

To systematically review the reported techniques, for evaluating the risk and difficulty encountered in the management of fractured abutment screw in accordance with the location of fracture, and to develop a logical sequence in managing an implant abutment screw fracture.

Systematic review following PRISMA guidelines.

A systematic search of the PubMed/MEDLINE database for articles published between January 2000 and March 2020 was performed by 2 independent reviewers. Case reports and case series that described the management of fractured implant abutment screw were included. Published articles were qualitatively analyzed employing CARE guidelines and were classified according to the location of screw fracture with respect to implant platform, risk of damage to the implant, and intervention for managing the fractured screw.

Qualitative analyisis.

A total of 28 articles were included in the review. Two of them explained the management of screw fracture at or above the implant platform and required only mild approach with low risk while the others explained the management of screw fracture below the level of implant platform.