Bad breath is a very common issue. Studies show that around 25–50% of the population are affected. It was already mentioned by the ancient Romans and Greeks, and to this day, many people feel inhibited in social interactions because of it. The medical term for bad breath is halitosis, derived from Latin, meaning "breath" or "exhalation". To help you overcome halitosis quickly and effectively, we work according to the latest scientific standards and in cooperation with a network of experts.
Dr. Michaelis has been a board member of the Halitosis Working Group within the German Society for Dentistry, Oral and Maxillofacial Medicine (DGZMK) for over 15 years and has long specialized in the diagnosis and treatment of halitosis.
Many patients and even some physicians still believe that bad breath primarily originates in the stomach. This misconception often leads to unnecessary examinations such as gastroscopies before a dentist is consulted. However, research shows that in 85–90% of cases, the cause is found within the mouth. The main culprits are volatile sulfur compounds (VSCs) produced by bacteria.
Common causes include: coating on the tongue, dental plaque and tartar, gum inflammation or periodontal disease, tooth decay (caries), fungal infections, poorly maintained dentures or defective restorations. Since halitosis can also indicate serious oral diseases, persistent bad breath should always be examined by a dentist. The tongue plays a particularly important role: about 60% of oral bacteria are found there. Studies confirm a strong link between tongue coating and halitosis, which is why tongue cleaning is an important part of prevention and treatment.
In 5–8% of cases, the cause lies in the ENT (ear, nose, and throat) area — typically chronic tonsillitis or sinus infections.
Systemic diseases are rarely responsible (0.5–1% of cases) but can include: liver or lung disease, diabetes, reflux or stomach disorders, certain medications (e.g. for high blood pressure or depression), which may reduce saliva flow or release odor-causing byproducts.
Smoking not only causes a characteristic odor but also increases bacterial buildup, reduces saliva flow, and promotes gum inflammation — all of which contribute to bad breath. Quitting smoking significantly benefits both your oral and overall health.
Diet can also play a role. Everyone knows the “after-alcohol breath” or the strong odor caused by garlic, which can last up to 72 hours. Even fasting can lead to temporary bad breath.
In around 5% of patients, the perception of bad breath has no objective basis — this is referred to as psychogenic halitosis.
The first step is to objectively assess the odor. We use two main diagnostic methods:
In our practice, we use the Halisens system (AI Analytical Innovation), the leading device in its class. It measures volatile sulfur compounds (VSCs) in exhaled air. To ensure accurate results, patients should avoid alcohol, chlorine-based substances, and essential oils before the test. This precise measurement also allows us to monitor treatment progress and verify success.
Treatment depends on the underlying cause. In most cases, halitosis originates in the mouth and can therefore be effectively treated by a dentist. If no oral cause is identified, we collaborate with specialist physicians in our network for further diagnosis.
When the source is dental, we will discuss the necessary treatment steps with you in detail. Typically, once the cause is addressed, the unpleasant odor disappears quickly, restoring your confidence and peace of mind in daily interactions.
Your initial consultation is free of charge and without obligation. If treatment is recommended after diagnosis, you will receive a clear cost estimate before any procedures begin.
If you have questions, please feel free to contact us. For us, bad breath is not a taboo, but a common and treatable condition – and we’ve already helped many patients successfully eliminate it.
