{"id":8360,"date":"2019-06-03T11:50:05","date_gmt":"2019-06-03T11:50:05","guid":{"rendered":"https:\/\/velezylozano.com\/coronas-de-zirconio-o-de-metal-ceramica-cuando-debemos-renovarlas\/"},"modified":"2019-06-03T11:50:05","modified_gmt":"2019-06-03T11:50:05","slug":"zirconium-or-metal-ceramic-crowns-when-they-need-to-be-renewed","status":"publish","type":"post","link":"https:\/\/velezylozano.com\/en\/zirconium-or-metal-ceramic-crowns-when-they-need-to-be-renewed\/","title":{"rendered":"Zirconium or metal-ceramic crowns? When should we replace them?"},"content":{"rendered":"

Have you been wearing a mouthguard that is a different colour or looks unpleasant? Have you started to see a black groove underneath or a dark shadow on your gum? You may need to renew your covers, here's why.<\/p>\n\n\n\n\n\n\n\n

A dental caps or crowns <\/strong>is a type of fixed prosthesis that is placed over a natural tooth, imitating the shape and colour of the tooth. This treatment is only carried out on very weakened teeth as a reinforcement, which we have to grind or reshape, and then \"glue\" a made-to-measure cover onto them.<\/p>\n\n\n\n

Traditionally, veneers were made with an internal metal structure, which gave them strength, and an external ceramic layer that provided the shape and a more tooth-like colour. They are a type of treatment that has worked very well for many years, but they have two drawbacks:<\/p>\n\n\n\n