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A recent book chapter describes the most important criteria for bone regeneration in titanium implants produced by powder bed fusion and the production of topologically designed and otherwise designed porous lattices for this application was also reviewed in .
 concept or principle: bone regeneration; application: titanium implants; manufacturing process: powder bed fusion; manufacturing process: production; concept or principle: topologically; engineering feature: designed; engineering feature: designed; concept or principle: lattices
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:
 concept or principle: bone regeneration; application: titanium implants; manufacturing process: powder bed fusion; manufacturing process: production; concept or principle: topologically; engineering feature: designed; engineering feature: designed; concept or principle: lattices