Dentures should be rinsed with warm water. It is a good idea to half fill the basin with water, preventing the denture breaking if accidently dropped. Simple rinsing will not thoroughly clean your dentures. You need to use a denture brush, with warm water and soap. NEVER use toothpaste, as it is too abrasive, and will scratch your dentures, which will wear down the denture surface, and will allow bacteria to attach itself.
Denture cleansers are a good idea to use (recommended), as most bacteria is invisible to the eye. When used in conjunction with an ultra-sonic cleaner, the build up of food particles and plaque can be gently vibrated away from your denture.
When cleaning dentures, especially the lower denture, NEVER place it in the palm of your hand (Fig. 1), as you could squeeze it and break it in half. Hold it with two fingers and the thumb (Fig. 2).