Clinicians report that the impression-taking process is the most stressful restorative procedure. Key factors involved in producing clinically acceptable impressions include managing soft tissue, appropriately selecting tray and impression material, and enabling impression material to flow predictably. Managing soft tissue is the most critical step in obtaining a perfect impression. Tray selection also plays a significant role with tray choice depending on the clinical situation and on the impression material and technique used. The most commonly used elastomeric impression materials are polyether (PE) and vinyl polysiloxane (VPS) chemistries. Appropriate use of either will produce a clinically accurate impression. The material must have an adequate working time and flowability, and have sufficient tear strength to prevent tearing at thin areas at the margin. Using a hydrophilic impression material and a surface modifier will permit enhanced flow and result in a more accurate and detailed impression. In addition, the impression must be dimensionally stable for a reasonable time until it is cast. Achieving clinically acceptable impressions requires clinical expertise and appropriate materials, trays, and techniques.

Dental lasers are used for multiple dental procedures, including soft-tissue procedures. Soft-tissue lasers are available at varying wavelengths and powers and can be used for procedures that would otherwise be performed using a scalpel, or possibly an electrosurgical unit. Soft-tissue lasers enable safe and effective removal of soft tissue when used properly, and contribute to the efficiency and marketability of the dental office.