Current Status of the Techniques Used for Halitosis Analysis

There are several types of halitosis, and accurate diagnosis of the type is important. Many gases are involved in oral malodor, and intraoral halitosis is most often caused by Volatile Sulfur Compounds (VSCs). To measure the concentrations of VSCs in mouth air, Gas Chromatography (GC) has been used, and this technique has contributed to much progress in halitosis research. However, GC instruments are large, expensive, and require a trained operator. To overcome these problems in daily use, portable sulfide monitors have been developed. Some of these monitors provide relatively accurate results, but they are no substitute for the accuracy of GC. Recently, two simple GCs were developed. These instruments are small and provide accuracy similar to traditional GC. This simpler instrumentation will ensure further progress in halitosis research.