Fracture Resistance of CAD/CAM Versus Traditional Interim Fixed Dental Prostheses

Pop, D.; Malaescu, R.; Marșavina, Liviu; Hosszu, Tiberiu; Rotar, Raul; Goguţă, Luciana; Duma, Virgil-Florin; Negruțiu, Meda Lavinia; Sinescu, Cosmin; Jivănescu, Anca

doi:10.37358/mp.18.3.5030

Cited by 2 publications

(3 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Recently, a study conducted by Pop et al, in which fracture resistance of provisional restorations of 3-unit FPDs indirectly fabricated by two types of PMMA has been compared with those made of PMMA blocks by CAD/CAM technology. 23 They have demonstrated that fracture resistance in CAD/CAM technology was significantly higher than indirect method. In the study by Alt et al, it has been shown that fracture resistance of interim restorations of 3-unit FPDs fabricated directly by PMMA is lower than those fabricated by CAD/CAM PMMA blocks.…”

Section: Discussionmentioning

confidence: 99%

Comparing Fracture Resistance of Provisional Restorations of 3-Unit Fixed Partial Dentures: An in Vitro Study of CAD/CAM versus Indirect Technique

Asadollah Ahmadzadeh,

Behnam Beheshti,

Mohamad Hossein Haghighizadeh

2021

Indian Journal of Forensic Medicine & Toxicology

View full text Add to dashboard Cite

Objective: To compare the indirect and CAD/CAM techniques and using acrylic and composites resins on the fracture resistance of provisional 3-unit fixed partial dentures (FPDs). Materials and Methods:In in vitro setting, thirty samples were divided into three groups included 10 FPDs manufactured indirectly and made of composite based bis-acryl (Protemp 4) resin, 10 FPDs indirectly milled with polymethyl methacrylate resin (PMMA) and 10 FPDs fabricated by CAD/CAM PMMA blocks. Fracture resistance was measured using universal testing machine (UTM). The master model was made of NiCr-alloy which designed using CAD/CAM technology.Results: FPDs fabricated using CAD/CAM PMMA blocks showed the highest fracture resistance values followed by Protemp 4 and then PMMA using indirect method. Statistically significant difference was found between the three groups (P=0.001). Bonferroni test was applied for pair wise comparison, in which the statistically significant difference was observed between FPDs fabricated by CAD/CAM which made of PMMA blocks and Protemp 4 and between CAD/CAM PMMA blocks and indirect/PMMA FPDs and between indirect/Protemp 4 FPDs and indirect/PMMA FPDs. Hence this suggested that PMMA significantly has minimum value of fracture resistance when compared to both CAD/CAM and Protemp 4. Conclusion:This study proved the superiority of CAD/CAM PMMA blocks for fabricating 3-unit FPDs over Protemp 4 and PMMA using indirect method, and the superiority of Protemp 4 over PMMA in terms of fracture resistance using indirect methods.

show abstract

Section: Discussionmentioning

confidence: 99%

Comparing Fracture Resistance of Provisional Restorations of 3-Unit Fixed Partial Dentures: An in Vitro Study of CAD/CAM versus Indirect Technique

Asadollah Ahmadzadeh,

Behnam Beheshti,

Mohamad Hossein Haghighizadeh

2021

Indian Journal of Forensic Medicine & Toxicology

View full text Add to dashboard Cite

show abstract

“…However, addition of TEGDMA affects in general mechanical properties, raised water absorption and determine color instability. UDMA reduces the polymerization shrinkage and ensures flexural strength, elastic modulus and hardness of the material [27,28]. UDMA and TEGDMA https://doi.org/10.37358/MP.21.2.5473 have resembling modulus of elasticity, significantly higher than other monomers [25,29].…”

Section: Scanning Electron Microscopymentioning

confidence: 99%

“…This study aimed to evaluate fracture load of thin occlusal crowns fabricated of CAD/CAM PICN material under a static compressive load [27]. To evaluate the fracture resistance Engra & all recommends static load tests or flexural tests as best choice [20].…”

Section: Scanning Electron Microscopymentioning

confidence: 99%

Material Thickness Influence on Fracture Load of Polymer Infiltrated Ceramic Network CAD/CAM Restorations

Avram¹,

Goguţă²,

Galatanu³

et al. 2021

Mater. Plast.

Self Cite

View full text Add to dashboard Cite

Polymer infiltrated ceramics are hybrid materials that combine the strength of ceramics and the flexibility of polymers. The aim of this study was to compare the fracture load capacity of monolithic CAD/CAM crowns with different occlusal thicknesses, made from polymer infiltrated ceramic network. Fifteen full contour CAD/CAM crowns made of Vita Enamic with occlusal thicknesses of 0.5 mm, 1.0 mm and 1.5 mm were fabricated with a wet milling machine. Restorations were cemented on human molars with adhesive cement. Samples were loaded along the long axis until fracture, with a single static compressive force. A scanning electron microscope (SEM) was used to examine the fracture surface of specimens after the fracture. The results of this study reveals that the fracture load of the samples increased progressively with the occlusal thickness. The highest fracture value was recorded for1.5 mm occlusal thickness of the crown. No statistically significant difference was reported between the three experimental groups. It can be concluded that hybrid monolithic CAD-CAM crowns showed sufficient fracture strength to be used for single restorations in the posterior area, even with a reduced occlusal thickness.

show abstract

Fracture Resistance of CAD/CAM Versus Traditional Interim Fixed Dental Prostheses

Cited by 2 publications

References 7 publications

Comparing Fracture Resistance of Provisional Restorations of 3-Unit Fixed Partial Dentures: An in Vitro Study of CAD/CAM versus Indirect Technique

Comparing Fracture Resistance of Provisional Restorations of 3-Unit Fixed Partial Dentures: An in Vitro Study of CAD/CAM versus Indirect Technique

Material Thickness Influence on Fracture Load of Polymer Infiltrated Ceramic Network CAD/CAM Restorations

Contact Info

Product

Resources

About