It may break or crack in case of excessive or adverse force, however the possibility of breaking or cracking is almost same as the possibility of breaking of a natural tooth. It can be mostly repaired in the clinic. It may fall off if the tooth underneath the crown decays and some material is lost. In such cases, the tooth is treated if possible and the crown is cemented again.
Can persons with gingival disease use zirconia crown?
First, the gingival disease is treated. The zirconia crown may be installed after treatment of gingival disease.
Do zirconia crowns have any disadvantages?
It is not recommended for the back portion because the possibility of breaking is increased.