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If the same problem keeps occurring after three tries, it's probably time to alter the approach. There may be changes to your mouth that require a new fitting, a different crown material, or an alternative approach, which may require changes to the neighboring teeth. Talk to your dentist about your concerns in case there are problems with the lab, as well.
The breaking crown can be the result of the wrong choice of material the crown is made from for the forces. Ceramic rrowns are only strong after excellent bonding procedures.Bite issues can also be involved in your crown breaking.Occasionally in all ceramic crowns sharp edges on prepared tooth can lead to breakage.It is also possible that there is a lab error in producing the crown.There are high end labs that are very expensive and very cheap labs. Both can be good but in general you get what you pay for. Doctors in PPOs and HMOs usually are forced to use cheaper labs due to small financial margins for the doctor.
From your photo , it appears you are concerned about the left front incisor. How long has the area appeared darker? Is the right one also crowned? Unfortunately any gum colored restoration would effect the integrity of the margin of the existing crown and would basically be a drilled...
Your new dentist sounds very competent . I agree that a zirconia abutment would not be my choice for #7. How your teeth come together in the front is critical to decide which material to use.Do you bite very hard? How much room is there for the abutment and crown? What shade are you...
Diagnostic waxups aren't required to do great dentistry, but they are immensely helpful. I usually tell patients that a diagnostic waxup is like a blueprint for how we want your final restorations to be fabricated. You wouldn't consider building a house without a blueprint, nor do I remove tooth...
