Persistent bad breath and what may be causing it

What is halitosis?

Halitosis is the medical term used to describe persistent unpleasant breath odour.

In many cases, bad breath originates within the mouth due to bacterial activity. These bacteria can accumulate on the teeth, tongue and gums, and in periodontal pockets, producing compounds that contribute to unpleasant odours.

While temporary bad breath is common, chronic bad breath that persists despite regular brushing and mouthwash use may indicate a more significant underlying issue.

Common causes of bad breath

Bad breath can have several causes, ranging from temporary lifestyle factors to more complex periodontal conditions.

Common causes may include:

• Gum disease
• Plaque and calculus accumulation
• Bacterial build-up on the tongue
• Poor oral hygiene
• Dry mouth
• Smoking
• Dental infections
• Food debris trapped between teeth
• Ill-fitting dental restorations
• Some medical or ear, nose and throat conditions (less common)

Because many different factors can contribute to halitosis, professional assessment is often beneficial when symptoms persist.

Chronic bad breath and gum disease

A common underlying cause of persistent halitosis

One of the most common causes of chronic bad breath is periodontal disease.

As bacteria accumulate beneath the gum line, they can produce unpleasant odours while simultaneously causing inflammation of the gums and supporting tissues. Patients with gum disease may experience persistent bad breath even when brushing regularly.

Additional signs that may accompany chronic bad breath include:

• Bleeding gums
• Swollen or inflamed gums
• Gum recession
• Plaque build-up
• Persistent unpleasant taste
• Loose teeth
• Increased tooth sensitivity

Because gum disease may progress without significant discomfort, bad breath can sometimes be one of the earliest signs that professional assessment is needed.

When should bad breath be assessed?

Occasional bad breath is common and may be related to food, dehydration, or temporary factors.

However, professional assessment may be advisable if you experience:

• Persistent bad breath despite good oral hygiene
• A constant unpleasant taste in the mouth
• Bleeding gums
• Gum recession
• Loose teeth
• Dry mouth
• Recurrent oral infections
• Concerns about oral health or social confidence

Identifying the underlying cause early may help prevent more significant oral health complications from developing.

Bad breath treatment in London

The most appropriate treatment depends on the underlying cause of the condition.

Management may involve:

• Professional cleaning
• Removal of plaque and calculus deposits
• Personalised oral hygiene guidance
• Periodontal therapy
• Management of gum disease
• Treatment of oral infections where appropriate
• Recommendations for tongue cleaning
• Ongoing periodontal maintenance

The primary goal is to address the underlying source of the problem, improve oral health, and support long-term fresh breath.

If no cause is found in the mouth, you may be advised to see your GP to rule out other causes.

As a Specialist Periodontist, Dr Menhadji provides comprehensive evaluation and treatment for patients experiencing chronic bad breath, gum disease, and other periodontal concerns that may contribute to oral malodour.

Find the cause, not just the symptom.

Persistent bad breath may be linked to underlying oral health concerns that deserve professional evaluation.