A healthy smile starts with great dental hygiene
William H. Smythe DMD in Louisville helps patients build and maintain dental hygiene habits that prevent cavities, gum disease, and costly restorative treatment. Dr. William H. Smythe IV and our hygiene team provide professional cleanings, personalized home care coaching, and early detection exams — so small issues never become big problems. Schedule your hygiene visit or call (502) 448-2876.
No treatment will be effective unless you follow it up with routine and proper home care. This means you should brush and floss regularly after every meal and at a minimum twice a day. The key is not only to do it regularly but also to do it right.
Every hygiene visit at William H. Smythe DMD includes a personalized home care assessment. We evaluate your brushing and flossing technique, identify areas you may be missing, and recommend specific products — from electric toothbrush heads to interdental brushes — based on your unique oral anatomy.
For patients with braces, implants, bridges, or dexterity challenges, we tailor a modified hygiene routine that accounts for these factors. The goal is a realistic daily routine you can actually maintain.
Medically reviewed by Dr. William H. Smythe IV, DMD · University of Louisville School of Dentistry, 1996 · Kentucky dental license #3628 · William H. Smythe DMD, 5141 Dixie Highway, Louisville, KY 40216 · same location since 1973.
To properly floss you should wind the floss around both of your index fingers and push it between each of your teeth in your mouth. Make sure to freely move the floss upwards, downwards and even sideways to remove any food particles or plaque that may be lodged between your teeth or under the gums.
Many people these days use an electric toothbrush such as a Sonicare. Whether you use an electric or still prefer a manual brush you should hold the brush at a 45-degree angle to your teeth. Gently but thoroughly rotate the bristles across your teeth and under your gums with a backward and forward motion.
Be sure to also get the top surfaces of your teeth where you bite or chew on food. Your tongue can also be cleaned with your toothbrush, which will help reduce bad breath. Lastly it is important to brush the inside surfaces of your teeth with the same rotating motion.
When brushing, it is important to use toothpaste that contains fluoride. Fluoride helps harden the outer layer of the tooth, called enamel, which will prevent cavities and also reduce bacteria in the mouth. It can also reverse the formation of smaller cavities.
Antibacterial rinses can also help reduce bacteria in the mouth. Please check with your dentist or dental hygienist if you have any additional questions about dental hygiene.
Practicing good dental hygiene daily helps protect your teeth and gums for a lifetime:
Daily plaque removal through brushing and flossing deprives cavity-causing bacteria of the environment they need to produce enamel-eroding acid.
Removing plaque from the gumline daily prevents the chronic inflammation that leads to gingivitis and, if untreated, irreversible periodontal disease.
Consistent brushing, flossing, and tongue cleaning eliminates the bacterial sources of chronic bad breath that mouthwash alone cannot address.
Fluoride toothpaste remineralizes early enamel damage from acid exposure, strengthening your teeth against future decay with every brushing session.
Oral bacteria have been linked to cardiovascular disease, diabetes complications, and respiratory infections. Good dental hygiene protects far more than your smile.
Here is what a typical hygiene appointment looks like at William H. Smythe DMD. Most visits take 45–60 minutes.
These are the concerns patients raise most often. Dr. William H. Smythe IV addresses each one at your visit.
"I brush twice a day — why do I still get cavities?"
Brushing alone reaches about 60% of tooth surfaces. The remaining 40% — the spaces between teeth — can only be cleaned with floss or interdental brushes. Cavities between teeth (interproximal cavities) are among the most common types we see, and they're almost entirely preventable with daily flossing.
"Should I use an electric toothbrush or manual?"
Both can be effective when used with proper technique. However, studies consistently show that electric toothbrushes — particularly oscillating-rotating models — remove more plaque than manual brushing. They're especially helpful for patients with limited dexterity, braces, or a history of aggressive brushing that causes gum recession.
"How often should I replace my toothbrush?"
Replace your toothbrush or brush head every 3 months, or sooner if the bristles are frayed. Worn bristles remove significantly less plaque. You should also replace your brush after recovering from any illness to avoid reintroducing bacteria.
Understanding the consequences of neglecting dental hygiene helps put the value of daily care into perspective.
You should brush and floss regularly after every meal and at a minimum twice a day. The key is not only to do it regularly but also to do it right — using proper technique for both brushing and flossing.
Wind the floss around both of your index fingers and push it between each of your teeth. Make sure to freely move the floss upwards, downwards and even sideways to remove any food particles or plaque that may be lodged between your teeth or under the gums.
Whether you use an electric or manual brush, hold the brush at a 45-degree angle to your teeth. Gently but thoroughly rotate the bristles across your teeth and under your gums with a backward and forward motion. Be sure to also clean the top surfaces, inside surfaces, and your tongue.
Fluoride helps harden the outer layer of the tooth, called enamel, which will prevent cavities and also reduce bacteria in the mouth. It can also reverse the formation of smaller cavities, making it an essential ingredient in your daily dental care routine.
Yes. At our Louisville dental office we provide comprehensive dental hygiene services including cleanings, exams, and guidance on proper home care. Contact our office today to schedule an appointment.
No. Mouthwash is a helpful supplement but cannot replace brushing and flossing. It does not physically remove plaque or food debris from tooth surfaces. An antibacterial rinse can reduce bacteria counts temporarily, but the mechanical action of brushing and flossing is what prevents cavities and gum disease.
Brush for a full two minutes each session — 30 seconds per quadrant of your mouth. Most people significantly underestimate how long they brush. Using an electric toothbrush with a built-in timer or a phone timer helps ensure you reach the full two minutes.
Water flossers are effective at reducing gum inflammation and are especially helpful for patients with braces, implants, or bridges. However, traditional floss is better at physically scraping plaque from tooth surfaces. Ideally, use both — or use whichever method you will actually do consistently. The best flossing tool is the one you use every day.
Most preventative visits are covered at or near 100% by typical dental insurance plans. We verify benefits before your visit and let you know upfront if anything would have an out-of-pocket cost.
Insurance: we accept most insurance plans and file claims on your behalf, so you do not have to chase reimbursement. We verify benefits before treatment and explain what is covered.
Payment options: Mastercard, Visa, American Express, Discover, cash, and CareCredit financing — which lets patients spread treatment cost across monthly payments.
If you have dental anxiety or sensitive teeth, tell us before we start — we will go slower, use topical numbing gel where helpful, and walk you through every step so nothing comes as a surprise.
William H. Smythe DMD has cared for Louisville families from the same Dixie Highway location since 1973. The office is on Dixie Highway in South End Louisville, with easy access from the Watterson Expressway (I-264) and I-64 — making the drive in from Shively, Pleasure Ridge Park, Valley Station, Iroquois Park, Auburndale, Beechmont, Fairdale, the South End, and across Jefferson County straightforward.
Our practice is family-friendly and accessible — free on-site parking, a wheelchair ramp, and an elevator to our second-floor office at Suite 202. Office hours are Monday through Wednesday 9 AM to 4 PM, Thursday 9 AM to 2 PM, and Friday 8:30 AM to 12:30 PM. To schedule, request an appointment online or call (502) 448-2876.
Medical Disclaimer
This content is for informational purposes only and does not constitute dental or medical advice, diagnosis, or treatment. Aggressive brushing can cause gum recession and enamel wear. Consult Dr. William H. Smythe IV or a qualified dental professional regarding any questions about your oral health. Individual results may vary.
A healthy smile starts with good dental hygiene. Schedule your cleaning and check-up with our Louisville team today.