Thermal cycling distortion of metal ceramics: Part I—Metal collar width

Campbell, Stephen D.; Pelletier, Lionel B.

doi:10.1016/0022-3913(92)90155-4

Cited by 29 publications

(18 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The micro-strain values of the test group recorded in the three different moments were not statistically different from each other. This shows that pre-heat treatment before laser welding allowed control of dimensional alterations of implant-supported metallic frameworks yielded by porcelain firing, confirming the recommendations in the literature 18,19,22,24 .…”

supporting

confidence: 85%

“…It has been widely observed in the literature that the fit of metal ceramic restorations deteriorates during the high temperature firing cycles used for porcelain veneering, and the deformation mostly occurs at the initial firing cycle (oxidation), before the application of porcelain 17,18,19,20,21,22,23,24 . The release of casting residual stresses during this initial firing seems to be the primary factor for much of the dimensional changes of these metal structures 19,21,25 .…”

mentioning

confidence: 99%

“…Some studies 18,19,20,22 found that the dimensional alterations were observed only after the oxidation cycle and no significant dimensional alterations were seen after opaque, body and glaze firings.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Strain Gauge Analysis of the Effect of Porcelain Firing Simulation on the Prosthetic Misfit of Implant-Supported Frameworks

et al. 2012

View full text Add to dashboard Cite

OBJECTIVES: This study investigated the effect of porcelain firing on the misfit of implantsupported frameworks and analyzed the influence of preheat treatment on the dimensional alterations. MATERIALS AND METHODS: Four external-hex cylindrical implants were placed in polyurethane block. Ten frameworks of screw-retained implant-supported prostheses were cast in Pd-Ag using 2 procedures: (1) control group (CG, n = 5): cast in segments and laser welded; and test group (TG, n = 5): cast in segments, preheated, and laser welded. All samples were subjected to firing to simulate porcelain veneering firing. Strain gauges were bonded around the implants, and microstrain values ( = 10 ) were recorded after welding (M1), oxidation cycle (M2), and glaze firing (M3). Data were statistically analyzed (2-way analysis of variance, Bonferroni, = 0.05). RESULTS: The microstrain value in the CG at M3 (475.2 ) was significantly different from the values observed at M1 (355.6 ) and M2 (413.9 ) ABSTRACT (189 WORDS)Objectives: This study investigated the effect of porcelain firing on the misfit of implant-supported

show abstract

supporting

confidence: 85%

mentioning

confidence: 99%

See 1 more Smart Citation

Strain Gauge Analysis of the Effect of Porcelain Firing Simulation on the Prosthetic Misfit of Implant-Supported Frameworks

et al. 2012

View full text Add to dashboard Cite

show abstract

“…14 A wide facial metal collar (0.8 mm) for high-gold alloys offers sufficient rigidity against distortion caused by porcelain shrinkage compared with a feather-edge metal collar. 15 Shoulder preparations are recommended for the feather-edge metal design to provide minimal metal thickness and at least some rigidity in the cervical area. Adding a separate thermal cycle of the metal at the oxidation temperature immediately after casting and either right before divestment or right after divestment was also recommended.…”

Section: Discussionmentioning

confidence: 99%

Precision of Fit of Two Margin Designs for Metal‐Ceramic Crowns

Limkangwalmongkol

Chiche

Blatz

2007

Journal of Prosthodontics

View full text Add to dashboard Cite

show abstract

“…These metallic discs were then subjected to oxidation cycle to simulate porcelain firing on one surface [10]. The nickel-chromium metal ceramic alloy discs were also divided into five groups and subjected to various surface treatments (Fig.…”

Section: Fabrication Of Wax Patternmentioning

confidence: 99%

Evaluation and Comparison of the Effect of Different Surface Preparations on Bond Strength of Glass Ionomer Cement with Nickel–Chrome Metal–Ceramic Alloy: A Laboratory Study

Hasti

Jagadeesh

Patil

2011

J Indian Prosthodont Soc

View full text Add to dashboard Cite

Retention of fixed partial dentures is mostly dependent upon the bond between metal and cement as well as cement and tooth structure. However, most of the time clinical failure of bond has been observed at metal and cement interface. The treatment of metal surface, prior to luting, plays a crucial role in bonding cement with the metal. This study is conducted to evaluate and compare the effect of different surface preparations on the bond strength of resin-modified glass ionomer cement with nickel-chromium metal ceramic alloy. Fifty caries-free extracted molar teeth were made flat until the dentin of the occlusal surface was exposed. After fabrication of the wax patterns and subsequent castings, the castings were subjected to porcelain firing cycles. The nickel-chromium metal ceramic alloy discs were also divided into five groups and subjected to various surface treatments: (1) Unsandblasted (U), (2) sandblasted (S), (3) sandblasted and treated with 10% aqueous solution of KMnO4 (SK), (4) unsandblasted and roughened with diamond abrasive points (UD) and (5) unsandblasted and roughened with diamond abrasive points and treated with 10% aqueous solution of KMnO(4) (UDK). After surface treatments, the castings were cemented using Fuji PLUS encapsulated resin-modified glass ionomer cement. The obtained values of all the groups were subjected to statistical analysis for Tensile and Shear bond strength. Different surface treatments of the metal affects the bond strength values of resin-modified glass ionomer cement when used as luting agent.

show abstract

Thermal cycling distortion of metal ceramics: Part I—Metal collar width

Cited by 29 publications

References 11 publications

Strain Gauge Analysis of the Effect of Porcelain Firing Simulation on the Prosthetic Misfit of Implant-Supported Frameworks

Strain Gauge Analysis of the Effect of Porcelain Firing Simulation on the Prosthetic Misfit of Implant-Supported Frameworks

Precision of Fit of Two Margin Designs for Metal‐Ceramic Crowns

Evaluation and Comparison of the Effect of Different Surface Preparations on Bond Strength of Glass Ionomer Cement with Nickel–Chrome Metal–Ceramic Alloy: A Laboratory Study

Contact Info

Product

Resources

About