p. 367−374
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p. 375−380
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p. 381−385
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p. 387−397
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p. 399−406
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p. 407−416
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0.05).Conclusion: Bulk-fill resin composites, investigated in this study, showed less color stability than incremental resin composites. Acidic drinks have deteriorating effects on color of resin composite restorations.]]>
p. 417−426
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p. 427−438
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p. 439−443
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p. 445−452
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p. 453−461
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p. 463−474
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p. 475−482
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p. 483−491
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p. 493−511
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p. 513−521
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p. 523−530
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p. 531−540
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p. 541−550
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p. 551−562
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p. 563−577
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p. 579−586
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p. 587−598
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0.05).Conclusions: Zirconia-reinforced glass ceramic still the material of choice for palatal and complete onlays because of their strengthening effect on the tooth. Complete onlays showed maximum reinforcement of the tooth structure.]]>
p. 599−609
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p. 611−618
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p. 619−628
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0.05), but there was a statistically significant increase in PD for comparison between PD at different time periods in each group after 6 months as well as from 6 months to 12 months. After 3, 6 as well as 12 months, Group CA showed statistically significantly higher mean amounts of bone loss than Group VA.Conclusions: (1) Vented abutments exhibit better soft tissue response and less marginal bone loss when compared to closed abutments through one year follow up. (2) Soft tissue response and marginal bone loss associated with both abutment designs were within the normal health limits after one year follow up period of the study.]]>
p. 629−639
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p. 641−656
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0.05) although all composites showed a smoother surface after finishing and polishing procedures. As regard to color changes (ΔE) statistically significant difference was found between composite groups and finishing and polishing system used (p < 0.05). A direct correlation between Ra and ΔE values was found. Conclusions: 1.surface roughness and color stability of resin composite restorations depend mainly on the material compositions and polishing procedure. 2. The effectiveness of the polishing systems was material dependent. 3. Among the material tested, Nanohybrid presented the smoothest surfaces and the least color changed material. 4. The polishing systems in this study, the best system was the TOR VM discs polishing system with respect to the surface roughness and color changes values. 5. Developments in finishing and polishing systems are important for the creation of ideal restorations and are associated with the increased clinical success of dental practitioners]]>
p. 657−666
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0.05). With neutral pH: in e.max CAD and VITA ENAMIC groups; it was found that two steps surface treatment approach recorded statistically non significant higher mean microshear bond strength value than one step approach as proven by paired t-test (P>0.05), while for VITA SUPRINITY group; it was found that two steps surface treatment approach recorded statistically significant higher mean microshear bond strength value than one step approach as demonstrated by paired t-test (P= 0.03<0.05)With alkaline pH: : in e.max CAD and VITA ENAMIC groups; it was found that two steps surface treatment approach recorded statistically significant higher mean microshear bond strength value than one step approach as proven by paired t-test (P<0.05), while for VITA SUPRINITY group; it was found that two steps surface treatment approach recorded statistically non-significant higher mean microshear bond strength value than one step approach as demonstrated by paired t-test (P= 0.2121> 0.05)Conclusions: Within the limitations of this study, the following conclusions and clinical recommendations could be advised:1) Although microshear bond strength of the two step etch and prime surface treatment protocol was significantly higher than that of one step self-etching ceramic primer protocol,however the values for all tested materials under various Ph conditions were nearly within a clinically acceptable range, thus it could be suggested that self etching primers can be safely used without affecting clinical performance of the restorations. 2) In patients subjected to predominately acidic or alkaline oral pH environments, both surface treatment protocols can be safely used when VITA SUPPRINITY restorations are indicated, however when VITA ENAMIC or e.max CAD are used, it is recommended to use the two step surface treatment protocol to ensure more stable bond strength 3) In patients having a neutral balanced oral pH environment, both surface treatment protocols can be safely used when VITA ENAMIC or e.max CAD restorations are used, however when VITA SUPPRINITY is recommended, it is advisable to use the two step surface treatment protocol to yield better ceramic resin bond durability. 4) Generally speaking, VITA ENAMIC restorations combined with one step self etching primer are not recommended for patients having acidic pH oral media as it yielded the lowest bond strength values between all subgroups]]>
p. 667−679
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p. 681−690
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p. 691−699
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p. 701−706
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p. 707−724
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p. 725−729
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p. 731−737
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p. 739−746
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0.05. The control group showed the lowest microhardness mean values in both materials. Dry finishing showed the highest microhardness mean values among the groups (P<0.05). Conclusion: Dry finishing and polishing increased the surface roughness and microhardness of X-tra fil (microhybrid) and (nanohybrid sonic activated) Sonicfill resin composites.]]>
p. 747−754
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p. 755−761
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0.05). Conclusions: Two techniques used for conditioning of Vita Mark II crowns did not affect significantly fracture load of these crowns. Multilink adhesive resin cement improved fracture loads of Vita Mark II crowns compared to RelyX U200.]]>
p. 763−770
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p. 771−776
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p. 777−785
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p. 787−792
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.05).Conclusions: Single tooth dental implants can remain functionally and esthetically acceptable in type 2 diabetic patients in a manner similar to healthy patients provided carful controlling and maintaining of blood glycemic level.]]>
p. 793−802
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p. 803−811
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p. 813−824
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p. 825−830
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p. 831−836
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p. 837−847
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