Page 182 - Clinical relevance of current materials for cranial implants

Chapter 9
NextDent C&B MFH had a significantly higher flexural modulus (E) than Vertex Self-Curing for control specimens. For HPGP sterilized specimens, NextDent C&B MFH showed a significantly higher flexural modulus compared to Vertex Self-Curing and Palacos R+G. EtO sterilized Palacos R+G showed a significantly higher flexural modulus than Vertex Self-Curing. For Vertex Self-Curing and Palacos R+G none of the sterilization methods showed a significant difference compared to the control specimens. However, NextDent C&B MFH showed a significantly reduction after EtO sterilization, and a significant increase upon HPGP sterilization.
Table 2: Specifications of the PMMA-based materials used in this study.
Material
/ Application
Vertex Self-Curinga
Denture
Palacos R+Gb
Bone cement
NextDent C&B MFHc Personalized medical device
Ingredients powder
Poly(methyl methacrylate), benzoyl peroxide, various pigments
Gentamicin, poly(methylacrylate, methyl methacrylate), zirconium dioxide, benzoyl peroxide, colorant E141
-
Ingredients liquid
Methyl methacrylate, N,N-Dimethyl-p-
toluidine, ethylene glycol, dimethacrylate
Methyl methacrylate, N,N-dimethyl-p-toluidine, hydroquinone, colorant E141
Methacrylate oligomer, methacrylate monomer, inorganic filler, phosphine oxides
Batch number
XN423P02 (shade 5) XN341L29
Expiration date
04-2022 03-2022
- -
XN305N01 - (shade N3)
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a Vertex-Dental, Soesterberg, The Netherlands b Heraeus, Hanau, Germany c NextDent, Soesterberg, The Netherlands
Fracture Toughness
Palacos R+G showed a significantly higher maximum stress intensity factor (Kmax) compared to the other materials. For the HPGP sterilization specimens, it was significantly higher than NextDent C&B MFH. Following EtO sterilization, Vertex Self-Curing and Palacos R+G showed a significantly higher maximum stress intensity factor than NextDent C&B MFH. Upon HPGP sterilization NextDent C&B MFH showed a significant increase. Other sterilization methods had no significant effect on the maximum stress intensity factor of the materials.
Palacos R+G had a significantly higher total fracture work (Wf) compared to the other materials for each sterilization method. The sterilization methods had no significant influence on the total fracture work of the materials.