In vitro effect of load cycling on metal-ceramic cement- and screw-retained implant restorations

Karl, Matthias; Graef, Friedrich; Taylor, Thomas D.; Heckmann, Siegfried M.

doi:10.1016/j.prosdent.2007.01.001

Cited by 57 publications

(78 citation statements)

References 14 publications

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“…Fixture-implanting treatment has recently been increasingly applied, and cement fixation is frequently employed to bind fixtures with superstructures because of its superiority to screw fixation regarding the esthetic appearance, fit accuracy, and procedure [1][2][3][4][5] . Because titanium and dental gold alloys are not in direct contact due to the cement, which it is an insulator, cement fixation of superstructures to fixtures does not produce a galvanic current and is less likely to cause corrosion.…”

Section: Introductionmentioning

confidence: 99%

Study of corrosion of combinations of titanium/Ti-6Al-4V implants and dental alloys

Yamazoe

2010

Dental Materials Journal

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Metal ions released in 1% lactic acid solution from combinations of titanium fixtures with superstructures made of dental precious metal alloys (dental alloys) and titanium and differences based on the fixing method were investigated. In combinations of titanium with dental alloys, the level of Ti release was influenced by micro-structure of titanium: it was lower when the grain size was smaller. In titanium-titanium combinations, differences in the micro-structure of metal also markedly influenced the dissolution: the level of release increased when the micro-structure of titanium was different. The Ti and V release levels were higher in combination with titanium alloy and titanium than with titanium alloy and dental alloys. Regarding the superstructure-fixture fixing method, the level of Ti release was significantly lower in cement than in direct fixation.

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Section: Introductionmentioning

confidence: 99%

Study of corrosion of combinations of titanium/Ti-6Al-4V implants and dental alloys

Yamazoe

2010

Dental Materials Journal

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“…Implant-supported metal-ceramic crowns are often used in the treatment of partially edentulous patients, and such crowns may be cement-or screw-retained (1)(2)(3)(4). The cemented prostheses have some advantages compared to the screw-retained, including higher fracture strength, passive fit, simplified restorative procedures and better aesthetics due to the absence of screw access hole (SAH) (4,5).…”

Section: Introductionmentioning

confidence: 99%

“…Nevertheless, removing the cemented crown is difficult without damaging the crown structure. Thus, removing procedure is the main advantage of screwretained crowns (1)(2)(3)(4)6), allowing re-tightening of the screw and easy removal of the crown for extraoral repairs and hygiene control (2,3,5,7).…”

Section: Introductionmentioning

confidence: 99%

“…Several studies report lower fracture strength values for the screw-retained crowns (1,2,4,5,7,(8)(9)(10)(11). This is explained by the presence of SAH that disrupts the structural continuity of the veneer porcelain (2,4).…”

Section: Introductionmentioning

confidence: 99%

“…This is explained by the presence of SAH that disrupts the structural continuity of the veneer porcelain (2,4). Influence of other factors on the fracture strength of implant-supported prostheses has been investigated, like the SAH location (4), sealing the SAH (11), wall material of the SAH (metal or porcelain) (5), narrowing of occlusal platform (12) and type of the cement (13).…”

Section: Introductionmentioning

confidence: 99%

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Influence of Cusp Inclination and Type of Retention on Fracture Load of Implant-Supported Crowns

et al. 2017

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There are few informations about the influence of cusp inclination on the fracture strength of implant-supported crowns. The study aimed to evaluate the influence of cusp inclination and retention type on fracture load in implant-supported metal-ceramic single crowns. Sixty crowns were made, classified as cemented and screw-retained with screw access hole (SAH) sealed or not. Standard (33°) and reduced (20°) cusp inclinations were tested for each group (n=10). To support crowns of a mandibular second molar, analogs of external hexagon implants 5.0 were used. The fracture load was measured in a universal testing machine EMIC DL2000 (10 kN load cell; 0.5 mm/min). Two-way ANOVA (retention and cusp inclination) followed by post hoc Tukey's honest significant difference test was used for the statistical analyses (α=0.05). Crowns with reduced cusp inclination exhibited significantly higher fracture load (p<0.01) than crowns with standard cusp inclination. Cemented crowns showed significantly higher fracture load (p<0.01) than screw-retained crowns. The interaction among these factors was not significant (p>0.05) for the fracture load. The sealing of SAH did not influence the fracture load of screw-retained crowns (p>0.05). In conclusion, fracture load of implant-supported metal-ceramic crowns was influenced by retention and cusp inclination, and there was no influence of the sealing of SAH.

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Esthetic Principles in Constructing Ceramic Restorations

Walter¹

2018

Ronald E. Goldstein's Esthetics in Dentistry

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In vitro effect of load cycling on metal-ceramic cement- and screw-retained implant restorations

Cited by 57 publications

References 14 publications

Study of corrosion of combinations of titanium/Ti-6Al-4V implants and dental alloys

Study of corrosion of combinations of titanium/Ti-6Al-4V implants and dental alloys

Influence of Cusp Inclination and Type of Retention on Fracture Load of Implant-Supported Crowns

Esthetic Principles in Constructing Ceramic Restorations

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