985
Moreover , most of the commercial 3D printers designed for specific resins and introduction of fillers can lead to blockage , wear , non-adhesion , and increased curing times .
 machine or equipment: 3D printers; material: resins; material: lead; concept or principle: wear; process parameter: curing times
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: manufacturing standard, machanical property, manufacturing process, material, engineering feature, process parameter, machine or equipment, application, process characterization, enabling technology, biomedical, concept or principle 
Text: {0} 
Answer:
 machine or equipment: 3D printers; material: resins; material: lead; concept or principle: wear; process parameter: curing times