Custom vs Store-Bought Mouthguards: A Dentist's Guide

If you play a contact sport, a custom-fitted mouthguard made by your dentist offers measurably better protection than the stock or boil-and-bite versions sold at sporting goods stores. Custom guards stay in place during impact, allow easier breathing and speech, and have been linked to lower rates of both dental injuries and sport-related concussions. At Carlmont Dental Care in Belmont, we fabricate athletic guards from a digital scan or impression so the fit matches your bite precisely.

The three types of athletic mouthguards, briefly

Walk into any sporting goods store and you'll see two of the three options the American Dental Association recognizes. The third is made in a dental office.

• Stock guards come pre-formed in small, medium, and large, and require no fitting at all. They are the cheapest option, but they tend to be bulky, fit poorly, and can interfere with breathing and clear speech. The ADA considers them the least effective of the three.
• Boil-and-bite guards are made from a thermoplastic material that softens in hot water. You bite into the softened plastic to shape it. With careful technique the fit is noticeably better than a stock guard, but the molding is approximate — biting alone cannot capture the fine contours of your teeth, and the shape tends to loosen over a season of use.
• Custom guards are made by your dentist from a digital scan or physical impression. The result is a thin, snug appliance that covers your upper arch precisely and stays in place without you having to clench. Custom guards are built from durable EVA material and, with reasonable care, can last several seasons before they need to be remade.

What the research actually shows

The case for a custom guard is not just about comfort. Published clinical research has found that high school football players wearing store-bought guards experienced roughly twice the rate of mild traumatic brain injury compared to teammates wearing custom-fabricated guards over the same season. A large meta-analysis of dental injury data concluded that wearing any mouthguard reduced dentofacial injury risk dramatically compared to going without — but the magnitude of that protection scaled with fit quality.

The mechanism is straightforward. A guard that stays in the correct position absorbs and distributes impact energy across the entire arch. A guard that shifts, drops, or has to be re-clenched into place leaves teeth, lips, and jawbones partially exposed at the worst possible moment.

Which sports really warrant a custom guard?

The ADA recommends some form of mouth protection for athletes in roughly thirty sports, including the obvious contact disciplines and several that surprise people.

• Contact and collision sports — football, hockey, lacrosse, rugby, boxing, mixed martial arts, wrestling — produce the highest injury rates and benefit most clearly from a custom guard. World Rugby, for context, mandated instrumented "smart" mouthguards in 2024 to monitor head impacts in real time.
• Limited-contact sports — basketball, baseball, soccer, volleyball, gymnastics, skateboarding, mountain biking, skiing, and snowboarding — still produce frequent dental injuries from elbows, balls, falls, and railings. A custom guard is reasonable here, especially for athletes with significant cosmetic dentistry, implants, or orthodontic appliances.
• Athletes in braces need special consideration. Your dentist may recommend coverage for both arches, and the guard should be re-evaluated as tooth position shifts during treatment.

Caring for your guard so it lasts

A custom guard is only as protective as its condition. A few habits go a long way.

• Rinse it under cool water before and after every use, and brush it gently with a soft toothbrush and a small amount of toothpaste.
• At least once a week, clean it in cool soapy water and let it air dry completely.
• Store it in the vented case it came in, away from sunlight, dashboards, and hot car interiors — heat permanently distorts the fit.
• Bring it to your routine checkups so our team can inspect for wear, perforation, or fit changes.
• Children and teens often need a new guard within a year because their bite is still changing; adults typically get several seasons out of one.

Common questions about athletic mouthguards

Coverage varies by plan. Some PPOs reimburse a portion under preventive or sports-injury benefits, particularly for children. We are in-network with most major PPOs — including Delta Dental, Aetna, MetLife, Cigna, Guardian, and several others — and we will verify your benefits before fabrication so there are no surprises.

Typically two short visits. The first appointment is a digital scan or impression that takes about fifteen minutes. The lab returns the finished guard within one to two weeks, and we check the fit at a brief follow-up.

You should not wear a clear aligner during contact sports — it is not designed for impact. A custom athletic guard can be made over braces, and it will protect both your teeth and the inside of your lips and cheeks from bracket-related lacerations.

The investment varies based on materials, arch coverage, and whether instrumentation or extra protective layers are added. Bay Area pricing reflects in-house lab work and senior clinicians, and we sit on the higher end of regional pricing. For families managing multiple athletes, our in-house membership plans (starting at $30 per month) and 0% APR financing through CareCredit or Proceed Finance can make it easier to budget. We will provide a written estimate after your consultation.

Growing jaws and erupting permanent teeth change the contour of the bite faster than most parents expect. A loose guard is no longer protective, so it is worth a quick refit appointment rather than another season of risk.

If you or your athlete plays a sport where a fall, a stick, or a stray elbow is a possibility, a properly fitted mouthguard is one of the simplest investments you can make in long-term dental health. To schedule a fitting or talk through your options, call our Belmont office at (650) 591-1984 or visit carlmontdentalcare.com. We serve families across San Mateo County and are happy to walk you through what makes sense for your sport, age, and budget.