When a cavity or a lesion means that a tooth or
part of it needs to be replaced, the most advisable course is to use materials that are similar to natural teeth. Consequently, glass-ceramic materials are commonly used in dentistry: these are glasses that have crystallized in a controlled manner after thermal treatment.
Glass-ceramic materials have an interesting
combination of properties, such as transparency
and high mechanical resistance. That is why they
are used to make implants, crowns or dental
bridges. Indeed, a combination of these materials
is commonly used in dentistry. For example, the
strongest (such as lithium disilicate) are used as
the main framework in bridges, while those that
look similar to natural tooth (such as leucite or
fluorapatite glass ceramics) are used as coatings.