In vital pulp therapy, what is the optimum depth for a pin hole in a tooth?

The optimum depth for a pin hole in vital pulp therapy is approximately 2mm because this depth allows for adequate access to the pulp chamber while minimizing the risk of damaging the underlying pulp tissue. At around 2mm, the clinician can clean and disinfect the area effectively, and it provides enough space for the placement of medicaments or dental materials that foster pulp healing. This depth balances the need to preserve the vitality of the pulp with the necessity of effective treatment.

Shallow depths, such as less than 2mm or 1-1.5mm, may not allow for sufficient access to achieve the desired therapeutic outcomes. On the other hand, greater depths like 4-5mm can lead to unintended damage to the pulp, increasing the risk of pulp necrosis or complications in the vital pulp therapy process. Thus, around 2mm emerges as the most favorable depth to optimize the treatment's success while protecting vital tissues.