Dental retainers can be worn during pregnancy. The main purpose of a dental retainer is to maintain the teeth in the desired aesthetic and functional position, and it will not affect the development of the fetus, so it can be worn without worry. For the newly corrected teeth, the position is not particularly stable, easy to rebound, dental retainers can play a consolidating role in a period of time need to retainers to help stabilize the position of the teeth. But dental retainers must choose suitable for their own, safe, regular products, to avoid poor-quality retainers affect oral health, while inducing a certain gingivitis to reduce the quality of life during pregnancy. Retainers need to be worn in strict accordance with the physician’s guidance program implementation, after wearing the retainer also need to pay attention to the way of wearing, such as in the process of eating and drinking need to remove the retainer, to avoid wear and tear of the retainer in the process of eating. The retainer does not need to be excessively cleaned during the removal and wearing process, and can be kept clean by rinsing with warm water.