Influence of recasting different types of dental alloys on gingival fibroblast cytotoxicity

İmirzalıoğlu, Pervin; Alaaddinoğlu, Emine Elif; Yılmaz, Zerrin; Oduncuoğlu, Bahar Füsun; Yılmaz, Burak; Rosenstiel, Stephen F.

doi:10.1016/s0022-3913(12)60013-4

Cited by 38 publications

(37 citation statements)

References 33 publications

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“…In the mean time, expression of Bcl-2 gingival fibroblasts exposed to 3.002 mg/L shows that the mean exposure duration between 1 day and 3 days was not significant difference, whereas the mean of exposure duration between 1 day and 7 days, as well as 3 days and 7 days shows significant differences. Expression of Bcl-2 of gingival fibroblasts exposed to 6.320 mg/L shows that the mean of exposure duration between 1 day and 3 days was not varied, whereas the mean of exposure duration between 1 day and 7 days, as well as between 3 days and 7 days demonstrates significant differences (Table 4 and Figure 2). …”

Section: Resultsmentioning

confidence: 98%

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The effect of nickel as a nickel chromium restoration corrosion product on gingival fibroblast through analysis of BCl-2

Soesetijo

Rukmo

2012

Dent. J. (Majalah Kedokteran Gigi)

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Section: Resultsmentioning

confidence: 98%

“…NiCr restoration recasting results in the increased toxicity in gingival fibroblasts due to the increase of Ni cations release in saliva. 5,6 Ni is an unstable transition class and easy-released into saliva. 7 NiCr alloy potentially causes toxic effects, for the reason that it may cause cellular damage.…”

mentioning

confidence: 99%

The effect of nickel as a nickel chromium restoration corrosion product on gingival fibroblast through analysis of BCl-2

Soesetijo

Rukmo

2012

Dent. J. (Majalah Kedokteran Gigi)

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“…In other words, biocompatible dental materials should be non-toxic, not leach or diffuse and not be absorbed into the circulatory system, as this might cause adverse systemic effects, including teratogenic or carcinogenic effects 2. Nickel, chromium, mercury, palladium and cobalt are all commonly used in dentistry, and all are known allergens 1…”

Section: Hypersensitivity and Lichenoid Reactionsmentioning

confidence: 99%

“…In Europe,1 almost half of the Swedish population and one third of the Swiss population use fixed restorations. This type of dental prosthesis is not without complications, as these restorations often extend into the gingival sulcus, and gingival epithelial cells come into contact with them 2. Corrosion of dental alloys occurs due to reaction with oral cavity fluids and consumed food, and can lead to surrounding tissue reaction and inflammation.…”

mentioning

confidence: 99%

Oral diseases associated with fixed prosthodontic restorations

Alnazzawi

2017

SMJ

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“…4 However different percentages of recasted base metal alloy with new metal or different recasting times were declared in the literature. [3][4][5][6][7][8][9][10][11][12][13][14][15][16] Published reports on the recasting of dental alloys vary widely, with opinions ranging from the complete avoidance of recasting to recasting up to 10 times without any changes in the alloy's quality. 17 No consensus protocol has been established to evaluate recasting.…”

mentioning

confidence: 99%

Effect of recasting percentage of base metal alloys on the metal-ceramic bond strength

Türk¹

2017

Yeditepe J Dent

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Dr. Ayşe Gözde Türk Ege University, School of Dentistry Department of Prosthodontics, Bornova 35100 İzmir Tel: 0232 3114651 E-mail: agturk@gmail.com SUMMARY Aim: Long-term success of metal ceramic restorations depends on metal ceramic bond. Recasting has been generally used for casted dental restorations in laboratories for economic reasons. This study was conducted to assess the effect of recasting percentage of Co-Cr alloys on the bond strength of metal-ceramic. Materials and Method: Different percentage combinations of new and once casted alloy were used to manufacture a total of fifty metal-ceramic samples for five groups (n=10). Metal discs (5 mm high-5 mm in diameter) were casted from 100% new alloy (G1), 75% new-25% once casted alloy (G2), 50% new-50% once casted alloy (G3), 25% new-75% once casted alloy (G4), 100% once casted alloy (G5). Opaque and dentin ceramics (4 mm high-4 mm in diameter) were fired on the metal samples. Metal-ceramic samples were thermo cycled (5-55 °C, 5000 cycles), with a dwell time of 20 s and a 10 s transfer time. The shear bond strength test was performed in a universal testing machine (Shimadzu) with a crosshead speed of 0.5 mm/min. Failure types were examined with a streomicroscope (X20). The data were analyzed with one-way ANOVA and the Tukey HSD test (p=0.05). Results:The mean bond strengths (MPa) were; 80.67 for G1, 85.69 for G2, 81.25 for G3, 80.46 for G4, and 81.74 for G5. No significant difference was found between the groups (p>0.005). Cohesive failure types were seen for all groups. Conclusion: Different percentages of new alloy and once casted alloy had similar bond strength values. Key words: Recasting, base metal alloy, bond-strength ÖZET Amaç: Metal seramik restorasyonların uzun dönem başarısı metal seramik bağlantısına bağlıdır. Ekonomik sebeplerle, metal destekli restorasyonlarda genellikle artık metalin tekrar kullanımı yapılmaktadır. Bu çalışmanın amacı, Co-Cr alaşımlarda artık metal kullanım yüzdelerinin metal-seramik bağlantısına olan etkisinin araştırılmasıdır. Gereç ve Yöntem: Yeni ve bir kez dökülmüş metallerin farklı yüzde kombinasyonları kullanılmış, her grupta 10 adet olmak üzere, toplamda 50 adet metal-seramik örnek elde edilmiştir. Beş mm yükseklik, 5 mm çapındaki metal disklerden guruplar sırasıyla, %100 yeni metal (G1), %75 yeni-%25 artık metal (G2), %50 yeni-%50 artık metal (G3), %25 yeni-%75 artık metal (G4), %100 artık metal (G5) kullanımıyla oluşturulmuştur. Opak ve dentin seramikleri 4 mm yükseklik, 4 mm çapında olacak şekilde metal örnekler üzerine pişirilmiştir. Örneklere 5-55 °C aralığında, 20 sn bekleme, 10 sn banyolar arası transfer ve 5000 siklüs olacak şekilde termal yaşlandırma yapılmıştır. Metal-seramik örneklere makaslama bağ dayanım testi 0.5 mm/dk çapraz hızla uygulanmıştır. INTRODUCTIONDespite the development and growing use of all ceramic systems, metal-ceramic restorations are still been used. For decades, gold has been used in dental practice. Overtime, when economic reasons and rigidity were considered, Ni based alloys have b...

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Influence of recasting different types of dental alloys on gingival fibroblast cytotoxicity

Cited by 38 publications

References 33 publications

The effect of nickel as a nickel chromium restoration corrosion product on gingival fibroblast through analysis of BCl-2

The effect of nickel as a nickel chromium restoration corrosion product on gingival fibroblast through analysis of BCl-2

Oral diseases associated with fixed prosthodontic restorations

Effect of recasting percentage of base metal alloys on the metal-ceramic bond strength

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