In which of the following procedures performed with a Nd:YAG laser is a non-contact methodology preferred?

In the context of procedures performed with a Nd:YAG laser, non-contact methodologies are preferred for treatments like aphthous ulcer management. Laser treatment for aphthous ulcers focuses on minimizing tissue trauma and ensuring precision. Using a non-contact approach allows for better control over the laser’s energy delivery, reducing the risk of damaging surrounding healthy tissue and accelerating the healing process.

This technique provides the added benefit of reducing discomfort during the procedure, as the laser can target the ulcer directly without making physical contact. Additionally, this method minimizes the risk of infection, which is crucial when dealing with oral lesions.

In contrast, other procedures, such as frenectomy, gingivectomy, and sulcular debridement, often require a more direct contact approach to ensure adequate tissue removal or debridement, making the non-contact methodology less suitable for those specific applications.