Oral health in athletes is not limited to aesthetics or toothache. In recent years, scientific studies have shown that oral and dental health can directly affect performance, injury risk and in-season continuity in athletes. In this article, we examine periodontitis, bruxism, occlusal (jaw alignment) disorders and oral health protocols used in sports clubs in the light of current scientific evidence.
Why Is Oral Health Important in Athletes?
Even in elite athletes, dental caries, gum disease and dental erosion are highly prevalent. Large-scale screening during major events has shown that a significant proportion of athletes have gingivitis (gum inflammation), periodontitis or untreated dental caries; and these problems negatively affect training participation, performance and overall well-being.
Neglected oral health can, through chronic inflammation, pain, sleep disturbance and loss of concentration, indirectly weaken key performance components such as endurance, strength, coordination and reaction time. For this reason, in holistic approaches to athlete health, oral and dental health is no longer an “extra”, but is considered a core component.
How Does Oral Health Affect Sports Performance?
To understand the relationship between oral health and performance in athletes, three common topics stand out: periodontal diseases, bruxism (teeth grinding/clenching) and occlusal (jaw alignment) disorders. These factors can influence a wide range of systems, from systemic inflammation and musculoskeletal loading to central nervous system responses.
1. Periodontal Diseases and Systemic Inflammation
Periodontal diseases such as periodontitis create a chronic infectious focus in the mouth and increase the systemic inflammatory response. Cytokines released into the bloodstream (for example IL-6, TNF-α) can increase the feeling of fatigue in muscle tissue, slow down recovery processes and negatively affect post-exercise regeneration.
Some studies have shown that professional football players with signs of periodontitis have a higher incidence of muscle injuries and a greater risk of recurrent injuries throughout the season. In contrast, athletes with better gum health demonstrated higher maximal oxygen uptake (VO2max) and higher power outputs in bicycle ergometer tests.
2. Bruxism (Teeth Clenching) and Its Effects on the Musculoskeletal System
Bruxism is more common in athletes than in the general population, especially under high stress and performance pressure. Chronic clenching leads to persistent tension in the jaw, neck and facial muscles. This tension can:
- Increase muscle fatigue,
- Cause pain in the neck and upper back region,
- Disrupt posture and negatively affect movement quality.
The literature reports that athletes with bruxism show reduced muscle strength and endurance, lower performance in balance and coordination tests, and prolonged reaction times. In addition, bruxism can impair training quality through sleep fragmentation and morning fatigue.
3. Jaw Alignment, Posture and Balance
The spatial relationship between the upper and lower teeth (occlusion) and the health of the temporomandibular joint (TMJ) are more closely related to posture and balance than expected. Malocclusion (abnormal bite) can cause asymmetric loading in the masticatory and neck muscles and thus:
- Disrupt postural control,
- Negatively affect balance and proprioception,
- Predispose to recurrent musculoskeletal complaints.
Experimental studies in which bite alignment was artificially altered have shown that athletes exhibit reduced muscular symmetry and lower total power output. There is also evidence that in some contact sports, specially designed mouthguards may help optimize jaw position and distribute muscle activation more evenly.
4. Reaction Time and Concentration
Chronic toothache, TMJ problems or systemic complaints accompanying gum inflammation can lead to attention deficits and impaired concentration in athletes. Especially in athletes with bruxism, both reduced sleep quality and chronic muscle tension have been associated with prolonged reaction times.
Regardless of the sport, in situations where decisions must be made within split seconds, these small differences can become critical for both performance and injury risk.
Examples from Around the World: How Clubs Approach Oral Health in Athletes
Professional clubs and Olympic performance centers have started to develop specific protocols for oral health in athletes. Some clubs systematically include comprehensive dental examinations, dental X-rays and periodontal assessments in their pre-season medical screening.
- Elite football clubs in Europe – Oral and dental screenings are carried out as part of medicals for new signings, and hidden sources of infection (e.g., impacted wisdom teeth, silent abscesses) are treated before the season begins.
- Performance laboratories – Oral health data are evaluated together with muscle injury and in-season injury statistics to explore a possible relationship between periodontitis and muscle injuries.
- Olympic centers – Dental clinics are set up at major events to assess the oral health of athletes and prevent issues such as toothache or infections from affecting competition periods.
These examples show that dentistry is becoming an increasingly strategic component within athlete health management.
Recommended Oral Health Screening Protocols for Athletes
Suggested oral health screening for athletes generally includes the following components:
- Dental examination: Caries, fractures, old restorations, root canal treatments and wisdom teeth.
- Gum and periodontal assessment: Gum bleeding, pocket depth and plaque accumulation.
- Bruxism screening: Tooth surface wear, masseter hypertrophy, tenderness in jaw muscles.
- TMJ and occlusion: Range of jaw motion, joint noises, bite anomalies.
- Trauma and mouthguard use: History of oral/facial trauma in contact sports and suitability of mouthguards.
- Nutrition and habits: Frequent consumption of acidic drinks, high-sugar snacks and tobacco use.
The aim is to identify high-risk conditions early and plan necessary treatment before they affect the athlete during the season. In this way, both performance decline and inflammation-related injury risks can be reduced.
Physiotherapist’s Perspective: The Clinical Importance of Considering Oral Health
Physiotherapists are not expected to directly treat oral health problems; however, it is extremely valuable for them to recognize clues related to the mouth and jaw during history taking and clinical observation. Especially in recurrent musculoskeletal complaints, instead of interpreting the picture solely through the local region, it can be helpful to also consider the following questions:
- Has the athlete recently experienced severe toothache or gum bleeding?
- Do they report teeth grinding at night, morning jaw fatigue or headaches?
- Is there any noise, locking or slipping sensation in the jaw joint (TMJ)?
- Are jaw alignment problems observed together with postural and balance issues?
Such findings may indicate that the physiotherapist should refer the athlete to a dentist or sports dentistry specialist. In this way, potential oral health factors underlying musculoskeletal problems are less likely to be overlooked.
Conclusion: Oral Health in Athletes May Influence Injury Risk
Scientific evidence linking athletes’ oral health with their physical performance and injury risk is becoming stronger. The compiled data suggest that poor oral hygiene and chronic oral infections may predispose athletes to musculoskeletal injuries, lower performance parameters and even adversely affect reaction times. Gum diseases such as periodontitis can create systemic inflammation and increase muscle fatigue, thereby reducing endurance and raising injury risk in athletesbmcsport. Similarly, bruxism is more common in the athletic population than we think, and can be associated with loss of strength and coordination, sleep disturbances and more than a two-fold increase in injury riskpubmed. Malocclusion and temporomandibular joint disorders can also affect posture and balance, preventing the athlete from performing at their highest level.
Regular dental check-ups, good oral hygiene, appropriate mouthguard use in contact sports and effective stress-management strategies can all help protect oral health in athletes and contribute to safer and more productive seasons.
This content is for general information only and is not a substitute for medical diagnosis or treatment. For your individual condition, you should always consult your dentist and your sports physician/physiotherapist.
Frequently Asked Questions (FAQ)
Why is oral health so important in athletes?
In athletes, oral health is not just about preventing toothache. Periodontal disease, bruxism and jaw alignment problems can influence performance and injury risk via systemic inflammation, muscle fatigue, postural disturbances and loss of concentration. Therefore, regular monitoring of oral health is an important part of comprehensive athlete care.
Does periodontitis increase injury risk in athletes?
Research shows that athletes with gum disease (periodontitis) have a higher incidence of muscle injuries and recurrent injuries. The main reason is that periodontitis creates a chronic inflammatory burden in the body and increases load on the musculoskeletal system.
How does bruxism (teeth grinding/clenching) affect sports performance?
Bruxism can cause tension in the jaw, neck and facial muscles, headaches and reduced sleep quality. This may translate into decreased muscle strength and endurance, impaired coordination and balance and prolonged reaction times. Chronic fatigue associated with bruxism can also reduce training quality.
How often should athletes see a dentist?
In general, athletes are advised to see a dentist at least once a year, preferably in the pre-season period. More frequent check-ups may be necessary in athletes with periodontal disease, bruxism or TMJ problems. For those who use mouthguards in contact sports, regular review and adjustment of the mouthguard is also important.
Does using a mouthguard only protect the teeth?
The primary purpose of mouthguards is to protect the teeth and soft tissues from trauma; however, a properly designed and well-fitting mouthguard can also reduce the impact transmitted to the jaw joint and neck region. In this way, it may help prevent not only tooth fractures but also jaw trauma and some musculoskeletal injuries.
