The question of whether one can eat while wearing a mouth guard is common, and the answer depends entirely on the specific appliance being used. A mouth guard is a general term for various protective dental devices, including those for impact protection, preventing nighttime tooth grinding, and orthodontic alignment. Each type serves a different function and is made from materials with varying durability, which dictates whether it can safely remain in the mouth during a meal.
The Rules for Night Guards and Sports Guards
For traditional night guards, used to prevent damage from bruxism (teeth grinding or clenching), and for sports guards, which shield teeth from impact, eating with the device in is strongly discouraged. These appliances are typically thicker and made from materials like acrylic, vinyl, or dual-laminate plastic designed to absorb force, not to withstand the crushing forces of chewing food. Chewing with the guard in place risks cracking, warping, or compromising the custom fit of the device.
A damaged guard may no longer properly protect the teeth or jaw, potentially delaying treatment or reducing injury protection. Furthermore, eating with a sports or night guard presents serious hygiene concerns. Food particles can easily become trapped between the appliance and the teeth, creating an environment where bacteria multiply rapidly. This trapped debris increases the risk of developing cavities, gum irritation, and unpleasant odors. Therefore, these protective devices should always be removed for all food consumption and for drinking anything other than plain water.
Clear Aligners and Orthodontic Retainers
Orthodontic appliances such as clear aligners (like Invisalign) and clear plastic retainers follow a different set of rules than traditional mouth guards. They must be removed before eating any food. The rationale for this strict removal rule is twofold: preserving the appliance’s integrity and maintaining oral hygiene.
These clear plastic trays are engineered for precise tooth movement, not for chewing. The force of eating can easily warp or damage their shape. If the aligner’s exact fit is altered, it can no longer exert the necessary pressure to guide the teeth, halting orthodontic progress. Furthermore, eating with these thin trays traps food debris and sugars directly against the tooth surfaces. This contact increases the risk of tooth decay and staining, as the plastic holds corrosive substances next to the enamel. The only exception is drinking plain, cool water; other beverages, including coffee, soda, and hot liquids, must be consumed with the trays out to prevent staining or thermal warping.
Proper Handling and Cleaning During Mealtimes
Since nearly all dental appliances must be removed for eating, a practical routine for handling them during mealtimes is necessary. The first step involves immediate, safe storage of the device in a protective, vented case. This prevents the guard from being damaged, accidentally thrown away, or exposed to surface bacteria.
Post-Meal Oral Hygiene
After the meal, but before the appliance is reinserted, clean the teeth thoroughly. Brushing and flossing is the ideal method to remove all food particles and sugary residue, but at minimum, a vigorous rinse with water is necessary to clear the mouth.
Cleaning the Appliance
Once the mouth is clean, the guard itself should be cleaned before being placed back onto the teeth. The appliance should be rinsed under cool or lukewarm water to remove any saliva or debris, and then gently brushed with a soft-bristled brush. Mild, non-abrasive soap or a designated cleaning solution can be used. Abrasive toothpastes should be avoided as they can scratch the material, creating crevices where bacteria accumulate. Also avoid hot water, as high temperatures can cause the plastic materials to warp and compromise the custom fit.