Dr. Phua's Oral Health Care Clinic

05/03/2026

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Meet the world’s oldest practicing dentist — still serving his community.

Dr. Etsuro Watanabe was born in 1924 and began his dental journey as a teenager in Japan. After serving as a medic during World War II, he returned home determined to care for his community through dentistry.

In 1953, he opened his clinic and became the only dentist in his town. For decades, he treated generations of families — often handcrafting dentures himself — building not just smiles, but lifelong trust.

Recognized by Guinness World Records, he continues to see patients even past 99 years of age. His routine is simple: morning practice, afternoon gardening, disciplined lifestyle.

His message is clear: purpose keeps you active. And for him, dentistry was never just a profession — it was service.

23/02/2026

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A cardiovascular revolution is silently unfolding in cardiac intervention labs. Patients with 90% blocked arteries are regaining full blood flow without surgery—thanks to DNA-origami nanobots that physically eat cholesterol deposits. Heart attack risk drops to near-zero within one day.

These microscopic machines measure 50 nanometers and are powered by glucose in the blood. They navigate using chemical gradients, targeting atherosclerotic plaques with enzyme payloads that liquefy lipid buildups. A single injection contains 400 billion bots. Cost? $2,700 per treatment. Bypass surgery, which costs $150,000 and requires months of recovery, is becoming obsolete.

19/02/2026

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🚫 Pharmacological Management of Periapical Lesions

Periapical lesions represent an inflammatory response of the periradicular tissues caused by bacterial invasion from the root canal system. Their management must focus primarily on eliminating the source of infection through proper endodontic therapy, complemented by a rational pharmacological approach aimed at controlling infection, inflammation, and pain — without replacing the causal treatment.

💊 Antibiotic therapy is indicated only when the infection spreads beyond the apical area or when systemic signs are present, such as cellulitis, fever, or trismus. The first-line antibiotics include amoxicillin (500 mg every 8 hours) or amoxicillin with clavulanic acid, especially in rapidly progressing or resistant infections. For penicillin-allergic patients, clindamycin or azithromycin are effective alternatives due to their broad spectrum against anaerobic and facultative bacteria.

🥵 Pain control is achieved with nonsteroidal anti-inflammatory drugs (NSAIDs) such as ibuprofen (400–600 mg every 8 hours) or naproxen sodium, which not only relieve pain but also reduce periapical inflammation. In cases of severe pain, a combination of NSAIDs and acetaminophen may be prescribed, as this synergistic approach has been shown to enhance analgesic efficacy.

✅ When severe edema or systemic involvement is present, the use of corticosteroids such as dexamethasone (4 mg intramuscularly or orally every 12 hours for 2–3 days) can be considered to reduce excessive inflammation and improve patient comfort.

🔘 It is essential to emphasize that pharmacological treatment does not replace endodontic therapy. The complete elimination of the infectious source through canal instrumentation, irrigation, and proper obturation is crucial for successful healing. Sodium hypochlorite and chlorhexidine remain the irrigants of choice due to their proven antimicrobial effectiveness.

👉 Dentists should always perform a thorough clinical and radiographic evaluation before prescribing any medication, taking into account the extent of the lesion, the patient’s systemic condition, and possible antibiotic resistance. Responsible antibiotic use prevents resistance development and ensures long-term therapeutic success.

18/02/2026

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Flossing may lower your risk of more than 50 systemic diseases.

Most people see flossing as a small hygiene step — something that just prevents cavities or stops gums from bleeding.

But gum inflammation is not just local irritation. It is biologically active. Inflamed gums release inflammatory mediators, and harmful oral bacteria can enter the bloodstream during everyday activities like chewing. This phenomenon, called transient bacteremia, is well documented in medical literature.

Over time, untreated periodontal disease has been associated with serious systemic conditions, including:

• Cardiovascular disease and stroke
• Poorly controlled type 2 diabetes
• Pregnancy complications
• Respiratory infections
• Rheumatoid arthritis
• Cognitive decline and Alzheimer’s disease
• Chronic kidney disease

The connection is inflammatory and microbial.

When plaque builds up between teeth, it creates an oxygen-poor environment where pathogenic bacteria thrive. The immune system responds continuously. That chronic inflammatory burden can influence blood vessels, insulin regulation, endothelial health, and even brain tissue.

Flossing physically disrupts that bacterial biofilm in areas a toothbrush cannot reach.

It reduces the bacterial load.
It lowers gum inflammation.
It decreases repeated episodes of bacteria entering the bloodstream.

This is not cosmetic dentistry. It is preventive health care that starts in the mouth.

Oral health and systemic health are biologically connected. A simple daily habit — interdental cleaning — is one of the most practical, evidence-based steps you can take to protect both.

Small habit. Whole-body impact.

17/02/2026

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A growing body of research is pointing to a notable link between periodontal disease and breast cancer biology. Scientists have identified a common gum disease bacterium inside breast cancer tissue, prompting deeper investigation into how oral pathogens may influence health far beyond the oral cavity.

The study found that this bacterium can migrate from the mouth to breast tissue, most likely through the bloodstream or mammary ducts. Once there, it is capable of entering and surviving inside breast cancer cells, adapting to the tumor microenvironment rather than being eliminated by the body.

Experimental data further suggest that the presence of this oral microbe may enhance tumor growth and support cancer progression by interacting with cellular pathways and immune responses. This does not establish that gum disease directly causes breast cancer. However, it highlights a biologically plausible connection that warrants careful scientific attention.

The broader message is straightforward: oral health is closely connected to systemic health. Effective prevention and management of periodontitis are not only important for preserving teeth and supporting structures, but may also contribute to lowering chronic inflammatory burden in the body. As evidence continues to evolve, comprehensive dental care remains an essential component of whole-body health strategy.

🧠 Source:
Parida S, Nandi D, Verma D, Yi M, Yende A, Queen J, Gabrielson KL, Sears CL, Sharma D. A pro-carcinogenic oral microbe internalized by breast cancer cells promotes mammary tumorigenesis. Cell Communication and Signaling. 2026. DOI: 10.1186/s12964-025-02635-9.

17/02/2026

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09/02/2026

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22/10/2025

Intraligamentary Anesthesia.

High percentage of successful pain relief.
99 %. Benefits:
-Anaesthesia in the area of one tooth only (no feeling
of " numb"half of the face). Painless anesthesia.
The anesthetic effect is immediately manifested (in
15-45 seconds), which saves the doctor and the patient's time.
-The duration of intraligamental pain relief is suficient for major outpatient dental interventions.
-MINIMUM use of anesthetics (0.12-0.54ml for pain relief of one tooth) and vasoconstructor, which is especially important for people with accompanying
pathology. Anaesthesia is free of disadvantages associated with conductive anesthesia, such as
chronic nerve conductivity, prolonged latent period,contracture, etc. Treatment in a single dental visit in
four quadrants of the jaw using a minimal amount of painless solution without causing discomfort in the patient during the injection.
Contraindications: Having a parodontal pockets.
The presence of acute inflammatory diseases of periodontium.