Cracked Teeth – Why?

June 2, 2015

One of the common problems we see as dentists is cracked teeth.  Any tooth can fracture, just like driving a truck over pavement enough times can crack the pavement, but the most commo reason is from the weaknesses caused by drilling and filling teeth.  Large amalgam fillings are like a lump of soft lead in a crystal glass, slowly creeping and expanding over the years until the tooth cracks apart.

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While most cracks are horizontal and a cusp cracks of the tooth, a large number are vertical cracks extending into the nerve of the tooth and splitting the root in half.

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It is best to replace any metal fillings if any sign of cracking is evident, but replacement with tooth coloured fillings may not be strong enough.

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The tooth should be supported with a full coverage of porcelain, or the best alternative which is gold.  The porcelain has a higher strength than plastic fillings but can still crack.  The gold will wear at the same rate as your own teeth and will not break but there is a cosmetic compromise.

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Talk to your dentist about which option is most suitable for you.