Why is it called the money tooth?
The first mandibular molar #19 and #30 is considered the most commonly treated tooth in dentistry. Reasons are: over the years, more restorations follow and they keep getting bigger and bigger until a root canal is involved.
Some molar are crowned several times in the life of a patient with occasional crown lengthening and endodontic re-treatment. The money tooth is often functional until the root fractures or secondary caries makes it non-restorable. The tooth is then extracted and replaced with a dental implant.