They use cheap alloy metal in the partial dentures they make. I asked Dr Centrella in Malden Ma for titanium to be used . my first lower denture clasps broke off within a month and both clasps kept on falling off .Arcari Lab charged me $100 in cash five times then $120. Then I had an upper partial made through Dr Centrella then one of teeth fell off they charged me to fix tooth then when they fixed it they put tooth on crooked. Unbelievable a company does lousy work and bad material and charges customer to fix and can not even fix right I stopped wearing upper I have an old one and bottom one I use without clasps and Denture adhesive .Over $ 2,000 for dentures and $1,000 cash for repairs [IRS] Avoid this place read more