Mouth Health Natters

Dr David Cowhig

Join the Mouth Health Natters podcast, on its quest for whole-body health and wellness! Grab a cup of tea, relax and learn with Dr David how oral health impacts your immune system, sleep, energy, inflammation & much more (& what you can do about it with holistic approaches). Dr David also interviews health experts about their expertise in prevention and management of chronic health conditions.

  1. May 20

    Why the Way You Breathe Is Quietly Shaping Your Teeth

    “Do you breathe through your mouth at night?” It is not the question most patients expect from their dentist. But for Dr David Cowhig, it is often the most revealing one, particularly when worn front teeth, gum disease, or unexplained decay are sitting in the chair in front of him. In a recent Mouth Health Natters conversation with Alana Inwood, certified Buteyko practitioner and founder of Breathscape, the discussion kept returning to one idea that rarely gets enough attention: the airway is where dental health and whole-body health meet. The Mouth Was Never Designed for Breathing When air enters through the mouth rather than the nose, the mouth dries out. Saliva depends on moisture to do its job — maintaining a stable pH and protecting against harmful bacteria. Without it, that balance shifts. As the oral environment becomes more acidic, the bacterial strains associated with gum disease and tooth decay find more favourable conditions to thrive. There is also a structural dimension that is easy to overlook. As Alana Inwood explains, one of the tongue’s jobs is to press up against the palate — and it is that repeated pressure during development that encourages the upper arch to grow broadly. When breathing shifts to the mouth, the tongue drops and sits against the lower teeth instead. The upper arch narrows, the lower jaw adapts to fit, and crowding follows. What Happens When the Jaw Compensates The consequences do not stop at the gums. Patients who struggle to breathe through the nose during sleep often present with flattened or chipped front teeth, a forward head tilt, and visible neck and shoulder muscle tension. The body, in its effort to open the airway during sleep, pushes the jaw forward, and the front teeth wear flat and begin to chip. This is also why nasal breathing matters directly to implant patients. Mouth breathing increases the likelihood of nocturnal clenching, which elevates the risk of implant failure. For Dr Cowhig, establishing adequate nasal airflow before any significant dental procedure is not an optional extra — it is part of the foundation. Nasal breathing also produces nitric oxide, a gas that triggers vasodilation (relaxing and widening blood vessels) and supports the body's natural regulation of inflammation. Bypassing the nose means bypassing this mechanism entirely. Where to Begin — and What to Expect Alana Inwood uses a baseline assessment called the Control Pause to establish where a patient’s breathing currently sits. The method is straightforward: after a relaxed exhale, the breath is held until the first definite urge to breathe. The result, measured in seconds, offers a useful indicator of carbon dioxide tolerance — a factor that underlies how efficiently oxygen is delivered to tissues. Under 20 seconds suggests meaningful room for improvement; under 10 is not uncommon in people with anxiety, chronic fatigue, or disrupted sleep. For those wanting to begin without clinical supervision, the most practical entry point is simply noticing. Lips sealed during a walk. Nose breathing is maintained during gentle movement. The first few days often feel effortful — slightly restricted, a little uncomfortable. That sensation is normal, and it tends to ease within a week as the body adapts. Building the Habit Breathing patterns do not live only in exercise. Alana assesses breathing across the full 24-hour cycle — the commute, desk hours, wind-down, and sleep. A useful anchor is any activity that is already habitual: a lunch break walk, the first few minutes at a desk in the morning. Lips closed, exhalation slightly longer than the inhalation. Done consistently, the pattern begins to feel less like a technique and more like a default. For anxious breathers, Alana Inwood recommends humming as a gentler entry point. The vibration stimulates the vagus nerve, and she notes it increases nasal nitric oxide production by around 70%.

    1h 9m
  2. 09/22/2025

    Ozonated Glycerin: Gentle, Effective Dental Healing

    Think oxygen, but smarter: ozonated glycerin transforms ozone’s fleeting nature into a pleasant, shelf-stable, blendable medium that controls harmful microbes while gently cueing tissues to heal—a hormetic nudge—without chlorhexidine’s staining downside. It’s oxygen intelligence in a jar—dependable for the practice, kind for everyday care. Whilst many practices still rely on conventional antiseptics, clinics at the forefront of holistic care are adopting gentler, microbiome-aware solutions. On Mouth Health Natters, Dr David Cowhig and Simply O3’s Micah Lowe map out the science, safety, and real-world applications in biological dentistry. The science of ozonated glycerin’s stability and healing Ozone is powerful but fleeting—as a gas, it loses its strength quickly, which limits its effectiveness in the mouth. Ozonated glycerin “holds” ozone’s benefits by forming stable peroxides and related compounds that persist far longer than gas and release single oxygen atoms over time—creating a gentle hormetic cue in tissues. Think of it as a slow-release form of oxygen care. In practice, most clinicians use a conservative 90-day potency window for ozonated glycerin, while a Japanese organisation reports multi-year stability using advanced testing—promising, but not yet widely published. This steady delivery creates a mild, short-lived oxidative nudge—much like the healthy stress of exercise. The result is twofold: fewer troublesome microbes and a prompt for the body’s own repair pathways, including growth factors and balanced immune signalling. Revolutionising Treatment Approaches In progressive dental practices, ozonated glycerin is opening practical options across care pathways. After a tooth is removed, dentists who already use ozone—such as ozonated water or saline irrigation—together with platelet-rich fibrin, can add a thin layer of ozonated glycerin to continue oxygen support and help keep the area clean as it heals. At Dental Wellness, the hygiene department’s biofilm therapy (for example, warm water, air, and erythritol via AirFlow) can be complemented by targeted use of ozonated glycerin in deeper niches and around implants—especially near the neck (the region at the gumline where the implant/abutment emerges), where tissues can be more reactive. For home care, patients commonly use ozonated water with a water flosser, as a mouthwash, or as a spray for appliances. Ozone’s broad antimicrobial profile (antibacterial, antifungal, and antiparasitic) helps keep devices fresh between visits. Within the practice, ozonated glycerin is applied selectively to support these goals. Envisioning Tomorrow’s Dental Care The practical implications are likely to extend beyond individual procedures. As evidence accumulates, ozonated glycerin could become a standard, microbiome-aware alternative to conventional antiseptics in biological dental practices—especially when dentists seek antimicrobial assistance that also supports local healing responses. Future-minded workflows may include in-practice production or local fresh-batching to ensure potency, rather than relying on products that may weaken with long shipping and storage. We’re already seeing different strengths for different roles (gentler for daily care, stronger for targeted use); over time, concentrations and delivery could be refined further to match clinical aims more precisely. Combined with better stability testing and sensible delivery formats, more patient-friendly products are plausible. Importantly, controlled data—from wound-care trials to dental studies—helps move adoption forward based on evidence and results, rather than merely on a treatment philosophy. Closing note and reader offer Contact the Dental Wellness team to learn more about how ozonated glycerin can support your care. If you’re exploring products, use code davidc10 at simplyo3.com for 10% off. Disclosure: davidc10 is an affiliate code that may support our educational work at no extra cost to you.

    41 min
  3. 07/24/2025

    When Chronic Dental Issues Persist Despite Antibiotics

    When patients walk into Dr David Cowhig's practice after multiple antibiotic courses for persistent gum disease or root canal infections, they're often frustrated and seeking answers. Having recommended black seed oil to his patients for several years with remarkable results, Dr Cowhig explored this further with Shakira Salahuddin, Business Development Manager of Hab Shifa Australia, in the latest Mouth Health Natters episode. This conversation revealed how an ancient remedy, documented over 3,000 years ago, addresses today's health concerns. Beyond the Antibiotic Cycle Many patients find themselves caught in cycles of antibiotic treatment for persistent dental issues. Those with autoimmune conditions find repeated antibiotic use problematic, while others seek to support their body's natural healing processes alongside conventional care. Dr Cowhig noted patients often have root canal infections troubling them for extended periods or gum problems that improve temporarily but keep returning. Black seed oil offers hope for patients seeking to boost immune systems and address underlying inflammation, aligning with Dr Cowhig's biological dentistry philosophy that supports the body's inherent wisdom. Nature's Unique Healing Compound Black seed oil contains over 100 naturally occurring constituents, but its primary active component is thymoquinone (TQ)—a unique compound found nowhere else in nature. This molecule delivers powerful antimicrobial, anti-inflammatory, and immune-boosting properties. Black seed oil can reduce lipopolysaccharides, toxic byproducts from harmful bacteria that contribute to oral and systemic inflammation. Hab Shifa's TGA-listed products offer options from standard strength to 5% concentration for intensive support. This ancient remedy works on multiple levels—supporting immune function, reducing inflammation, and improving sleep quality through antihistamine properties. Practical Applications Dr Cowhig recommends 5% strength capsules for patients with chronic issues needing to optimise their immune systems before treatment. He also suggests oil pulling with black seed oil, typically mixed with coconut oil for better taste. Daily use is safe and beneficial, with customers reporting improvements in sleep, skin health, and overall vitality. One compelling case involved a patient with persistent root canal pain experiencing significant improvement after three months of supplementation. Transforming Dental Care The discussion highlighted possibilities for integrating traditional remedies with modern dental techniques. Black seed oil fits perfectly with Dr Cowhig's ceramic implant procedures—both representing non-toxic, biocompatible approaches that support the body's systems rather than burden them. This podcast illustrates the importance of examining traditional remedies through a modern scientific lens, serving as a bridge between ancient healing wisdom and contemporary dental wellness.

    32 min
  4. 11/22/2024

    Beyond Root Canals and Fillings - A New Era in Dental Health Emerges

    In the latest episode of Mouth Health Natters, Dr. David Cowhig had the pleasure of interviewing Dr. Kelly Blodgett, a distinguished biological dentist from Portland, USA. Dr. Blodgett, board-certified in naturopathic medical dentistry and integrated biological dental medicine, brings a unique perspective to dental care by combining advanced technology with individualised biological approaches.Dr Blodgett shared his fascinating journey into dentistry, which began with a surprising spiritual calling to transform the negative stereotypes associated with dental care. For his first 15 years of practice, he focused on implementing cutting-edge technology to make dental procedures more comfortable and less invasive. About a decade ago, responding to patient demands, he began incorporating biological approaches into his practice, revolutionising his approach to dental health.The conversation delved into Dr. Blodgett's impressive social media presence, particularly his "Toxic Tuesday" and "Wellness Wednesday" series on Instagram, which has been running for six years. These posts have created a platform for sharing patient success stories and raising awareness about traditional dental approaches that may need reconsideration.Much of the discussion centred on advanced diagnostic tools, including 3D cone beam CT scanning and DNA-PCR testing for root canal extractions. Dr. Blodgett emphasised how these technologies have transformed their ability to identify hidden infections and provide comprehensive care. The immediate health improvements many patients experience after removing infected or dead teeth were highlighted, demonstrating the profound connection between oral and overall health.The interview also covered the exciting developments in ceramic implants, particularly the SDS (Swiss Dental Solutions) system, which both doctors agreed represents the current gold standard in biological implant dentistry. Dr. Blodgett, as one of only ten SDS ambassadors in the United States, shared his experience with various implant systems and the superior predictability of the SDS system.Dr Blodgett also discussed his new venture, the Whole Health podcast, which he co-hosts with functional nutritionist Megan. The podcast explores various aspects of integrated health and features diverse health practitioners, furthering understanding of the crucial connection between oral and systemic health.This engaging conversation represents what Mouth Health Natters aims to achieve - bridging the gap between traditional dentistry and integrated health approaches while educating listeners about the crucial role of oral health in overall wellbeing.For those interested in learning more about biological dentistry and its transformative potential, the interview provides invaluable insights from two pioneers in the field. Dr. Blodgett can be followed on Instagram @BlodgettDentalCare, where he continues to share his knowledge and patient success stories.The complete episode offers more profound insights into the following:- Advanced diagnostic technologies in biological dentistry- The immediate health benefits of removing dental infections- Current developments in ceramic implant technology- The importance of an integrated approach to dental health- The future of wellness-focused dentistryThis conversation serves as a reminder that dental health is far more than just maintaining a beautiful smile - it's a crucial component of overall wellness and vitality.

    31 min
  5. 09/10/2024

    Nurturing Your Oral Microbiome for Lifelong Health Benefits

    In a recent podcast, I had the pleasure of engaging in a fascinating natter with Rebecca Edwards, Director of Education at Activated Probiotics, about the crucial role of the oral microbiome in dental and overall health. Our conversation unveiled the intricate connections between oral health and systemic wellbeing, emphasising the importance of maintaining a balanced oral microbiome. The Power of the Oral Microbiome: Why It Matters As a dental professional, I've come to understand that the oral microbiome is far more than just a collection of bacteria in our mouths; it's a complex ecosystem that plays a pivotal role in our overall health. Rebecca highlighted how the microbes in our mouths influence oral health and impact various bodily systems, including the immune system, cardiovascular health, and cognitive function. Understanding the oral microbiome's significance is crucial because it is a gateway to the rest of our body, affecting everything from digestion to inflammation. Our discussion underscored the need for a paradigm shift in how we approach oral health, moving beyond just focusing on sugar intake and acid control to considering the broader implications of oral microbial balance. Unveiling the Oral Microbiome: What It Encompasses Through my research and discussions with experts like Rebecca, I've learned that the oral microbiome consists of diverse microorganisms that colonise our mouths, including bacteria, fungi, and viruses. These microbes form intricate communities on our teeth, gums, tongue, and other oral surfaces. While some bacteria, like Streptococcus mutans, are associated with tooth decay, others play protective roles. The balance between beneficial and harmful bacteria is crucial for maintaining oral health. Importantly, the oral microbiome isn't isolated; it interacts constantly with our immune system and can influence systemic health. For instance, certain oral bacteria have been linked to conditions like rheumatoid arthritis and Alzheimer's disease, highlighting the far-reaching effects of oral microbial health. Nurturing Your Oral Microbiome: How to Maintain Balance In my practice, I've learned that maintaining a healthy oral microbiome involves more than just brushing and flossing. We discussed the Activated Probiotics' Biome Dental, a specifically formulated oral probiotic containing strains clinically proven to support oral health. Rebecca shared some helpful tips on how to incorporate these probiotics into our daily routine: -Complete your regular oral hygiene routine (brushing, flossing, etc.). -Before bed, open a sachet of Biome Dental and pour the powder into your mouth, as it is a small amount of powder. -Swish the fast-melting powder around your teeth with your tongue before swallowing. -Use daily for at least 28 days for optimal results. Our discussion emphasised the importance of a holistic approach to oral care. I've learned that maintaining oral health goes beyond just using probiotics and includes proper nutrition, stress reduction, and addressing issues like mouth breathing. These factors can significantly impact the oral microbiome, either positively or negatively. This shows the interconnected nature of overall health and oral microbial balance, advocating for a comprehensive strategy in oral care. The Future of Oral Health: Exploring Potential Impacts I'm excited about the possibilities that our deepening understanding of the oral microbiome opens up for preventive healthcare and personalised treatments. By maintaining a healthy oral microbiome, we may potentially reduce the risk of not only dental issues but also systemic diseases. For pregnant women, nurturing a balanced oral microbiome could lead to better pregnancy outcomes and potentially influence the development of the fetus's microbiome. Early intervention with oral probiotics might contribute to more robust immune systems and fewer illnesses in children. We also discussed the potential for oral microbiome analysis to become a standard part of health assessments, offering insights into overall health status and disease risk. As research progresses, we'll see more targeted probiotic therapies and oral care products designed to support specific health outcomes through modulation of the oral microbiome. My conversation with Rebecca has illuminated the critical role of the oral microbiome in our health. By understanding and nurturing this vital ecosystem, we open the door to improved overall wellbeing, potentially revolutionising our approach to healthcare and disease prevention.

    1h 5m
  6. 09/08/2024

    Bridging the Gap: Cannabis, Anxiety, and the Future of Dentistry

    Recently, I had Dr John Teh as a guest on my podcast, “Mouth Health Natters.” As the founder of Dental Wellness, which focuses on creating safer, healthier, and more beautiful smiles, I was particularly interested in Dr Teh’s expertise in medicinal cannabis and its potential applications in dentistry. Dr. Teh, the founder and medical director of Plant Med Clinic, shared his fascinating journey into medicinal cannabis. He explained how his career path shifted from surgery to cannabis medicine, sparked by a personal experience helping a friend with a brain tumor. I was intrigued to learn about the complexities of medicinal cannabis, especially the entourage effect. Dr Teh’s explanation of how THC, CBD, and various terpenes work together was enlightening. As a dentist, I found his insights on cannabis use for dental anxiety and chronic pain management particularly relevant to my practice. We discussed several dental-related applications, including managing trigeminal neuralgia and chronic neck pain. While Dr Teh noted that cannabis might not be ideal for acute pain from dental infections, its potential in chronic pain scenarios could be significant for many of my patients. Dr. Teh’s perspective on Australia’s medicinal cannabis landscape was eye-opening. As someone who’s been in the field since its legalization in 2016, his view that Australia possibly has the best medical framework for cannabis in the world was surprising and encouraging. I appreciated Dr. Teh’s balanced approach, especially his caution against rushed recreational legalization. His advocacy for a measured approach aligns well with my philosophy of careful, evidence-based practice in dentistry. The discussion on the social stigma surrounding cannabis use was particularly valuable. Dr Teh’s encouragement for people to explore medicinal cannabis for themselves, emphasizing its safety profile, could be reassuring for many of my patients who might be hesitant to consider it as a treatment option. Overall, this natter with Dr. Teh has expanded my understanding of medicinal cannabis and its potential role in dental care. It’s opened up new possibilities for how we might approach certain challenging conditions in dentistry, always to provide the best possible care for our patients. To understand this fascinating topic more deeply, please watch or listen to the entire podcast conversation with Dr Teh. The whole discussion offers even more insights into medicinal cannabis and its potential applications in dentistry and overall health care. Dr Teh mentioned an excellent educational resource for those interested in learning more. Planteducation.net.au offers both free and paid courses on medicinal cannabis. This platform provides information for professionals and patients who want to expand their knowledge in this rapidly evolving field. As we explore new frontiers in dental care and overall wellness, staying informed about emerging treatments like medicinal cannabis is helpful. I hope this natter with Dr Teh has piqued your interest and encouraged you to delve deeper into this vital topic.

    40 min
  7. 06/17/2024

    Alternative Therapies in Dentistry: Exploring the Roles of Breathwork and Biodynamic Cranial Sacral Therapy

    As a holistic dentist, I'm always looking for ways to improve my patients' experiences and provide them with the most comprehensive care possible. Recently, I had the pleasure of hosting Sarah Holmes, a biodynamic cranial sacral therapist, on my podcast, Mouth Health Natters. Our conversation shed light on the fascinating world of alternative therapies and their potential applications in dentistry. During the podcast, Sarah shared her expertise on breathwork and how it can help patients manage anxiety and regulate their nervous systems. She explained that by guiding patients through techniques like the four-box breath or alternate nostril breathing, we can help them feel more relaxed and at ease during dental treatments. However, she also emphasized the importance of tailoring breathwork to each individual's needs, as certain techniques may not suit everyone. One of the key takeaways from our natter was the role of cranial sacral therapy in addressing issues related to dental procedures. As a dentist, I often refer patients to cranial sacral therapists or osteopaths after treatments involving the upper jaw, such as tooth extractions. These procedures can impact the delicate cranial bones and lead to jaw tension or misalignment. Cranial sacral therapy can help restore balance and stability to these structures, promoting healing and reducing discomfort. Sarah also touched on the concept of fascia and how it can become restricted when we're under constant stress. This can limit mobility and contribute to various health issues. Cranial sacral therapy, along with other modalities like massage, can help release these restrictions and restore three-dimensional movement in the body. In addition to her work as a biodynamic cranial sacral therapist, Sarah is also a co-author of the book "Beyond the Shift," in which she discusses techniques for managing internal dialogue and cultivating positive self-talk. She believes that our internal and external language greatly influences our well-being and that conscious breathing plays a significant role in this process. If you're interested in learning more about Sarah's work or would like to experience breathwork or cranial sacral therapy, you can find her at her studio in Bundaberg, North Queensland. Visit her website, essentialwellnesswithin.com.au, or connect with her on Instagram @eWellnesswithin for more information on her services, including online breathwork sessions and workshops. Tune into the full episode of Mouth Health Natters to learn more and follow along with some breathing exercises.

    46 min
  8. 03/19/2024

    Brain Gym: How to Give Your Cognition a Strength Workout

    What if simple, playful everyday movements could optimize learning capacity, cognitive skills, and physical coordination and even increase energy levels or calm anxious states? From stress reduction to pain relief to unleashing untapped human potential, that’s the incredible power that Brain Gym taps into and activates for all ages. Based on groundbreaking discoveries in the 1970s about movement patterns impacting neural wiring and information processing, educators Paul and Gail Dennison conceived an approach leveraging this mind-body connection through targeted exercises promoting whole-brain integration. They termed this emerging field Educational Kinesiology. These intentionally designed sequences of 26 Brain Gym activities – incorporating stretches, poses, and energetic movements – stimulate hemispheric communication and alignment across mental, physical, and emotional systems for peak performance, effectively “rewiring” neural pathways and reflex responses to enable more integrated, fluid functionality free of blockages. Our special guest for today’s show is Patricia Collins. She is a licensed Educational Kinesiology Instructor. Patricia hosts Brain Gym® courses and consults clients and volunteers at schools to spread the gift of a more integrated body and mind. Patricia’s search for health and well-being for her two children, who were challenged with food allergies, began over 40 years ago. As a primary school teacher, she battled with thyroid and adrenal issues and ended up with chronic fatigue. With the help of holistic health practitioners, she gradually improved and developed a new passion for holistic modalities and started studies in multiple natural therapies. Join us to unpack the what, why and how behind Brain Gym. Learn why consistent practice produces phenomenal cognitive, physical and emotional breakthroughs in children, adults and seniors alike. Gain insights on the cutting edge of natural learning therapies from a passionate instructor.

    53 min

About

Join the Mouth Health Natters podcast, on its quest for whole-body health and wellness! Grab a cup of tea, relax and learn with Dr David how oral health impacts your immune system, sleep, energy, inflammation & much more (& what you can do about it with holistic approaches). Dr David also interviews health experts about their expertise in prevention and management of chronic health conditions.