Technique tips: moisture control in children

Moisture control is an important aspect of dentistry in modern practice. Absorbent materials, suction devices and other techniques, such as the application of rubber dam, are available to assist with achieving a dry oral field. Attaining appropriate isolation of the operative field in a child can pose a significant clinical challenge. However, this can be overcome by adapting the aforementioned techniques to ensure patient comfort and a successful outcome.

The rubber dam technique was first described by Sanford Christie Barnum in 1864 to provide isolation of the operative field.¹ There are several benefits reported from the use of rubber dam:²

The use of rubber dam is a pre-requisite before undertaking root canal therapy. It is fundamental in establishing an aseptic operating field and preventing the ingestion or inhalation of endodontic irrigants and instruments. In addition, this technique has enabled predictable outcomes to be achieved when utilizing adhesive materials in paediatric dentistry (Figure 1). However, there is no conclusive evidence that fissure sealants placed under rubber dam in children have improved survival rates compared to alternative isolation techniques.³