120
High purity alumina has usually a purity of 99.99 % and has been developed as an alternative to surgical metal alloys for dental applications .
 material: alumina; material: as; material: metal alloys; application: dental applications
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:
 material: alumina; material: as; material: metal alloys; application: dental applications