Abstract
The fused deposition modelling (FDM) assisted investment casting (IC) is one of the commercially established routes for fabrication of biomedical parts requiring high precision. In past two decades number of studies has been reported on use of thermoplastic and wax based FDM patterns for IC of dental crown (DC) in human dentistry. But hitherto little has been reported on comparison of Ni-Co-Cr based DC prepared by using FDM printed virgin acrylonitrile butadiene styrene (ABS) pattern and wax coated ABS pattern for veterinary patients (VP). In this work, first molar and canine teeth in left side of lower mandible of a 3-year German Shepherd male dog has been prepared by using virgin ABS and wax coated ABS patterns followed by IC of Ni-Co-Cr alloy. The result of study suggests that wax coated ABS samples-based DC has better surface hardness, grain structure, surface roughness (Ra) and controlled surface porosity thus may be used as commercial manufacturing strategy. The results have been supported with scanning electron microscopy (SEM) and energy dispersive X-ray (EDX) analysis.
Highlights
The fabrication of orthoses and prostheses as per the customized requirements includes selection of bio material, patient specific design and blended manufacturing processes for meeting the biomedical industry standards
Hitherto little has been reported on comparison of NiCo-Cr based dental crown (DC) prepared by using fused deposition modelling (FDM) printed virgin acrylonitrile butadiene styrene (ABS) pattern and wax coated ABS pattern for veterinary patients (VP)
The marking was done on the die stone model after cross verifying with the help of micro-meter and vernier calliper
Summary
The fabrication of orthoses and prostheses as per the customized requirements includes selection of bio material, patient specific design and blended manufacturing processes for meeting the biomedical industry standards. During the life span of VP, teeth may be damaged due to any disease, traumatic condition, improper ingesting of food, fighting among them and natural wear and tear These VP may require proper dental hygiene [2]. Ingate and runner material for IC, the preparation of investment is a significant phase. In this phase the parameters like powder to water concentration, mixing time, pouring height, angle of pouring, air entrapment, viscosity etc. First molar and canine teeth in left side of lower mandible of a 3-year German Shepherd male dog has been prepared by using virgin ABS and wax coated ABS patterns followed by IC of Ni-Co-Cr alloy
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