Hello sir..
3 mm tooth structure is enough to go for post and core of that root canal treated tooth....life expectancy will be 5 years and more if proper care and periodic check up has been done.....it is better not to disturb the healthy teeth...however clinical examination is necessary to come for treatment conclusion...
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kindly visit dentist for furthur clinical examination and management
Answered2019-05-03 10:38:47
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