I think that the cheapest and most effective way to do so is to get professionally fitted with a custom made mouthguard. This will greatly reduce the chances of tooth damage or painful laceration of the lips and mouth. Mouthguards also assist in absorbing the impact which may cause a broken jaw or even concussion.
Mouth guards are made from heavy duty, flexible, hard-wearing vinyl or laminates. Various mouthguard colours are available and can be custom made to suit your teeth.
According to the Australian Dental Association (ADA), about one-third of traumatic injuries to teeth are sports-related. Sports Medicine Association Australia suggests that 50% of children experience some form of dental injury. To remain effective and comfortable the rule of thumb is renew your mouthguard each year. The small cost of a mouthguard may save many thousands of dollars in the event of trauma.
Most health funds provide generous rebates for mouthguards for obvious reasons.