The effects of surface texture and grooving on the retention of cast crowns

Witwer, D.J.; Storey, R. J.; Fraunhofer, J.A. von

doi:10.1016/0022-3913(86)90380-x

Cited by 11 publications

(7 citation statements)

References 13 publications

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“…Smoothness also has an effect on retention but appears to be related to the type of definitive cement used. Two studies 97,98 demonstrated that roughness did not increase retention with zinc phosphate cement, but several other investigations 95,96,[99][100][101][102][103] discovered that some roughness of tooth preparations improved retention with zinc phosphate cement. In 3 studies, 95,100,103 roughness did not improve retention with adhesive-type luting agents such as polycarboxy-late, glass ionomer, and resin; in 3 other studies, roughness did increase retention.…”

Section: : Surface Texturementioning

confidence: 99%

“…In 3 studies, 95,100,103 roughness did not improve retention with adhesive-type luting agents such as polycarboxy-late, glass ionomer, and resin; in 3 other studies, roughness did increase retention. 96,101,102 Surface roughness generally has been found to improve crown retention with zinc phosphate luting agents. However, the relationship between surface roughness and crown retention has not been definitively determined when adhesive-type cements such as polycarboxylate, glass ionomer, and resin luting agents are used.…”

Section: : Surface Texturementioning

confidence: 99%

See 1 more Smart Citation

Tooth preparations for complete crowns: An art form based on scientific principles

Goodacre

Campagni

Aquilino

2001

The Journal of Prosthetic Dentistry

361

308

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Section: : Surface Texturementioning

confidence: 99%

Section: : Surface Texturementioning

confidence: 99%

Tooth preparations for complete crowns: An art form based on scientific principles

Goodacre

Campagni

Aquilino

2001

The Journal of Prosthetic Dentistry

361

308

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“…It is well known in fixed partial prosthodontics that crown preparations should be made with a 5°-7° taper of axial walls with vertical grooves, if necessary, to resist displacement of a casting (Johnston, Phillips & Dykema, 1971). Research has shown that slots and coves (undercuts) in tooth structure provide an adequate level of retention for several restorative materials (Chan & Chan, 1987 eported in the literature that the effect of surface roughness on tooth structure prepared with diamond burs significantly increases the retentiveness of cast gold crowns (Witwer, Storey & Von Fraunhofer, 1986;Felton, Kanoy & White, 1987). During the last decade, research has focused on the addition of auxiliary retention by means of cement keys, in order to improve the retention of overtapered or overprepared crown preparations (Worley, Hamm & Von Fraunhofer, 1982).…”

Section: Introductionmentioning

confidence: 99%

“…Cement location during tensile removal of cast crowns was also examined in order to determine the capacity of luting agents to adhere to tooth structure and the undersurface of castings (Witwer et al, 1986). All of the previously mentioned research studies utilized zinc phosphate cement or zinc carboxylate cement as luting agents.…”

Section: Introductionmentioning

confidence: 99%

Effect of undercut placement on crown retention after thermocycling

Arcoria

DeWald

Vitasek

et al. 1990

J of Oral Rehabilitation

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The aim of this study was to examine the effect of undercuts in castings and/or tooth structure on the retention of crowns luted with glass ionomer cement. After routine full-crown preparations had been made in 48 human premolars, wax patterns were fabricated for each tooth. Retentive coves were then produced with a round bur in either the tooth structure or the wax patterns, or in both. One group of teeth and patterns did not receive any undercuts; this was the control group. Castings were made in non-precious metal. All crowns were luted with glass ionomer cement. Half of the samples were thermocycled, and the remainder were kept at 37 degrees C. Crowns were removed using tension (0.012 cm min-1) and the mean bond strengths calculated. The differences in retentive strengths were tested for statistical significance using ANOVA and Scheffe's test. The presence of coves in castings and/or tooth structure significantly increased the retentive strength of castings cemented with glass ionomer, as compared with conventional crown preparations without retentive undercuts. The effect of thermocycling on the retentive strength of castings cemented with glass ionomer was not statistically significant.

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“…17 Titanyum abutment ve kuronlar üzerindeki çeşitli yüzey işlemleriyle birlikte oluşan mikro ve makroretansiyon alanları, simante kuronların tutuculuklarını arttırdığı bildirilmiştir. 18 Titanyum ve yapıştırma ajanları arasındaki adezyonu kuvvetlendirebilmek için, farklı yüzey modifikasyon yöntemleri önerilmektedir. 19,20 İmplant destekli kuron ve titanyum abutment arasındaki bağlantıyı güçlendirmek için, kumlama, asitleme, lazerle pürüzlendirme gibi birçok yüzey işlemi mevcuttur.…”

Section: Tepeklinikunclassified

Effect of fiber laser application on titanium surface on bonding strength of resin cement

Erzincanli¹,

Hamitoğlu²,

Kayahan³

2020

Yeditepe J Dent

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Bu çalışmanın amacı, farklı parametrelerdeki fiber lazer ile yüzey pürüzlendirme işlemlerinin, titanyum ve rezin siman arasındaki bağlanma dayanımı üzerindeki etkisini araştırmaktır. Gereç ve Yöntem: Döküm, CAD/CAM ve lazer sinterleme yöntemleriyle 3 farklı şekilde üretilmiş, 90 adet titanyum örneği hazırlandı (n=30). Tüm bağlanma yüzeyleri standardizasyonu sağlamak amacıyla, sırasıyla 600-1000-1200 partiküllü silikon karbid kağıtlarla cilalama yapıldı ve her örneğin yüzey pürüzlülüğü ölçüldü. Her grup 3 alt gruba ayrıldı (n=10): grup (1) 110 mµ Al 2 O 3 partikülleri ile kumlama, grup (2) fiber lazer 10 W, grup (3) fiber lazer 20 W. Yüzey işlemleri tamamlanan örneklerin bağlanma yüzeylerine metal primer ve dual-cure self adeziv rezin siman uygulandı. Polimerizasyonu tamamlanan örnekler kalıptan çıkartıldı ve tesviyesi yapıldı. Örneklerin kırılma işlemi üniversal test cihazında 1 mm kalınlığındaki kesme bıçağı ile yapıldı. Verilerin istatistiksel analizinde titanyum tipi ve pürüzlendirme şeklinin bağlanma dayanımı üzerindeki ortak etkisinin değerlendirilmesinde Two way Anova testi kullanıldı. Devam testi olarak One way Anova Test kullanıldı. Anlamlılık p<0,05 düzeyinde değerlendirildi. Bulgular: Tüm titanyum tiplerinde kumlama işleminin, 20 W gücündeki fiber lazer uygulamasına kıyasla daha yüksek bağlanma dayanımı oluşturduğu görüldü (p<0,05). 10 W gücündeki fiber lazer uygulaması ile kumlamaya yakın bağlanma dayanımı değerleri elde edildi. Kumlama işlemi uygulanan gruplarda, CAD/CAM grubunun ortalama bağlanma dayanımı (6,42 MPa), Döküm (12,61 MPa) ve Lazer Sinter (11,27 MPa) gruplarından anlamlı derecede düşük bulundu (p<0,05). Sonuç(lar): Titanyum-rezin siman bağlanmasında en etkili yüzey pürüzlendirme yönteminin kumlama olduğu, düşük güçte (10W) fiber lazer uygulaması ile yüksek güce kıyasla (20W) daha başarılı bir bağlanma elde edildiği sonucuna varıldı.

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The effects of surface texture and grooving on the retention of cast crowns

Cited by 11 publications

References 13 publications

Tooth preparations for complete crowns: An art form based on scientific principles

Tooth preparations for complete crowns: An art form based on scientific principles

Effect of undercut placement on crown retention after thermocycling

Effect of fiber laser application on titanium surface on bonding strength of resin cement

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