The Latest Developments Related to Composite Resins

Cangül, Suzan; Adıgüzel, Özkan

doi:10.5577/intdentres.2017.vol7.no2.3

Cited by 14 publications

(16 citation statements)

References 27 publications

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“…Another possible explanation for the successful behaviour of incremental techniques in occlusal margins may be the presence of spherical silica particles in the adhesive system used (14). Previous studies have shown that adding filler to adhesive systems increases the elasticity modulus and rigidity, thereby reducing the polymerization shrinkage of the adhesive and contributing to the prevention of microleakage (15,16). In another study, it was reported that the nanofillers in the adhesive systems were filtered by the collagen mesh and held on the surface of the hybrid layer, thus behaving like a stressabsorbing intermediate layer (17)(18)(19).…”

Section: Discussionmentioning

confidence: 99%

Evaluation of marginal microleakage in composite restorations with different placement techniques

Misilli

Yılmaz

2018

Int Dent Res

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Aim: The purpose of this in vitro study was to evaluate the effect of different layering techniques (bulk, oblique, centripetal, split horizontal) on the marginal microleakage of Class II adhesive restorations. Methodology: Forty-eight standardised Class II cavities were prepared on both mesial and distal sides of extracted non-carious human molar teeth. Following preparation, all specimens were randomly divided into four groups (n=12). Group 1: bulk technique; Group 2: oblique incremental technique; Group 3: centripetal incremental technique; Group 4: split horizontal incremental technique. The teeth were restored with a total-etch adhesive system and a microhybrid composite resin. After thermocycling and immersion in a 0.2% methylene blue solution for 24 hours, the restorations were sectioned, and dye penetration was evaluated under a stereomicroscope. The microleakage scores (0 to 4) obtained from the occlusal and gingival margins were analysed with Kruskal-Wallis and Mann-Whitney U tests (p<0,05). Results: Incremental placement techniques showed lower microleakage compared with bulk and lower microleakage was seen at occlusal margin compared with gingival margin. However, there were no statistically significant differences among four placement techniques and the margins (p>0,05). Conclusion: Based on the results of the present study, none of the four placement techniques were found to be effective in eliminating marginal microleakage entirely in Class II restorations. All of the placement techniques showed similar results when the cavity margins were located on the enamel.

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Section: Discussionmentioning

confidence: 99%

Evaluation of marginal microleakage in composite restorations with different placement techniques

Misilli

Yılmaz

2018

Int Dent Res

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“…It is suggested that the disadvantages of direct composite restorations can be eliminated by indirect inlay applications in the light of the research studies (2,3,15). Considering recent developments in adhesive and indirect composite materials, different types of indirect composite inlay groups were included in our study.…”

Section: Discussionmentioning

confidence: 99%

“…They will allow the dentist to remove the minimum amount of material while following the basic cavity principles and to make restorations with better aesthetic, function and grip by strengthening the bonding of the restorations to the dental tissues (1)(2)(3).…”

Section: Introductionmentioning

confidence: 99%

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Examination of the Effect of Preheating Process on Microtensile Bond Strength in the Cementation of Indirect Restorations

Görüş

2018

Int Dent Res

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Aim: The aim of this study was to investigate the effect of preheating of inlay and onlay restorations prepared from composite materials and using a CAD/CAM device on microtensile bond strength in different structures. Methodology: 90 impacted human third molar teeth were used. These teeth were divided into 3 groups. MOD inlay cavity preparation was performed. For the first group, restorations were prepared using a CAD/CAM device. For the second group, a fiber-reinforced composite (EverX Posterior, GC, Tokyo, Japan) was used and restoration was then completed using the laboratory composite system (Gradia, GC, Tokyo, Japan). For the third group, laboratory composite system (Gradia, GC, Tokyo, Japan) was used alone. Er,Cr:YSGG laser (Fotona Laser AT Fidelis Plus III, Slovenia) was administered on all prepared restorations. In the cementation of the restorations, resin cement was administered with and without preheating. The prepared samples were tested for microtensile bond strength (Microtensile Tester, Bisco, Schaumburg, IL, USA). Results: There was no statistically significant difference between the groups of the microtensile bond strengths of the samples in which the adhesive cement was pre-heated (P) and not pre-heated (N) (p>0.05). There was a statistically significant difference (p<0.05) in terms of the microtensile bond strength values between the groups in which the adhesive cement was pre-heated during the cementation of restorations. Conclusions: It was observed that exposure of the adhesive cement to preheating in the cementation of the EverX Posterior-based inlays adversely affects the bond strength. The preheating process statistically significantly increased the bond strength in the inlays made using the Gradia composite. Preheating of the cement in the cementation of Cerasmart composite inlays produced using the CAD/CAM system did not affect the microtensile bond strength. The effect of preheating process on microtensile bond strength Görüş Z.

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“…Glass-fiber post can be used to strengthen and lengthen the root. Prefabricated post and resin cement is a viable technique for weakened endodontically treated roots [ 15 – 18 ].…”

Section: Introductionmentioning

confidence: 99%

Laser Application to the Root Surface Increases the Bonding Strength of Surface-Treated Prefabricated Glass-Fiber Posts in Teeth with Excessive Substance Loss

et al. 2018

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BackgroundThis study examined the effect of roughening of the root surface using an erbium-doped yttrium aluminum garnet (Er: YAG) laser on the binding strength of teeth undergoing root canal treatment.Material/MethodsNinety single-rooted teeth were used and assigned randomly to 9 groups (n=10 each). Root canals were prepared using the FlexMaster rotary system. An Er: YAG laser was applied to the root canals in Group 1, with no surface treatment of the glass-fiber post. In Group 2, aluminum oxide particles were applied. In Group 3, the laser was applied to the root canals, with Cojet treatment. Group 4 received laser treatment and Clearfil Ceramic Primer. In Group 5, Clearfil Ceramic Primer silane coupling was performed on post surfaces without laser treatment. In Group 6, hydrofluoric acid (HF) application was followed by Clearfil Ceramic Primer cementing of the glass post surfaces with laser application. In Group 7, HF acid treatment was performed without laser. In Group 8, the laser was applied, followed by sanding of post surfaces using Korox 50, and silane coupling with Clearfil Ceramic Primer. In Group 9, the post surfaces were sanded using Korox 50 with laser application to the root canals. The samples were subjected to a push-out experiment. The data were analyzed using Friedman’s test and the Wilcoxon signed-rank test.ResultsA significant difference in bonding strength was found among the groups (p<0.005).ConclusionsUse of an Er: YAG laser in the root canal may be beneficial prior to bonding of glass posts.

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The Latest Developments Related to Composite Resins

Cited by 14 publications

References 27 publications

Evaluation of marginal microleakage in composite restorations with different placement techniques

Evaluation of marginal microleakage in composite restorations with different placement techniques

Examination of the Effect of Preheating Process on Microtensile Bond Strength in the Cementation of Indirect Restorations

Laser Application to the Root Surface Increases the Bonding Strength of Surface-Treated Prefabricated Glass-Fiber Posts in Teeth with Excessive Substance Loss

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