In restorative planning, the main question is how much healthy tooth structure can still be preserved. Root canal treatment and aesthetic fillings are evaluated not only to reduce current pain, but to keep the tooth functional over time.
The extent of pulp involvement, fracture lines, spread of decay, and the condition of older restorations all influence the decision. That is why some teeth can be managed with a filling while others are better protected with root canal treatment.
When an aesthetic filling is planned, shade harmony and natural form matter as well. The aim is a result that works functionally and still feels natural in everyday life.