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Our Areas of Expertise

We perform many different services of dentistry.  We believe that every patient has a right to a lifetime of oral health.  We are committed to providing the finest dental care with first class customer service at an excellent value. We are confident that you will feel right at home in our office as we welcome all patients as if they were family.

  • Cleanings with Digital X-rays & Exam

  • Fillings

  • Children and Adult Orthodontics

  • Children Welcomed

  • Cosmetic and Teeth Whitening

  • Extractions including Wisdom Teeth

  • Partials and Dentures

Highlighted Services

As a general dentist, Dr. Dennis Knuth believes strongly in providing comprehensive dental care for children and adults alike. This comprehensive view includes orthodontics. Having graduated from the Academy of Straight Wire and Functional Orthodontics, Dr. Knuth enjoys a growing reputation and expertise in orthodontics as his general dentistry practice continues to grow.

If you — or anyone you know — could benefit from exceptional, individualized orthodontic care at a very reasonable price, call Dr. Knuth for a consultation. At Greencastle Hometown Dental, we also extend in-house financing to our orthodontic patients with monthly payment plans and healthcare financing through CareCredit.


Braces are used to straighten teeth and to correct the alignment in the mouth. Several types of braces and approaches are available – including traditional metal braces, ceramic braces, 6 Month Braces, and invisible braces. The length of time spent wearing braces depends on the severity of the condition and the desired outcome. The process usually takes from 6 months to 3 years; your unique case may be shorter or longer.

Benefits of Orthodontics

The following list includes some of the benefits you will experience as a result of orthodontic treatment:

  • Increase self-esteem by improving your appearance. Straight teeth increase smiling… and smiling makes you healthier, more confident and even improves your outlook on the world.
  • Decrease the likelihood that you will develop gum disease and or lose teeth prematurely by relieving stress on gums and bones — an inevitable result when teeth do not align properly.
  • Eliminate possible speech problems caused by misaligned teeth.
  • Help reduce and treat jaw pain or TMJ.
  • Decrease the possibility of decay in crowded, overlapping teeth – places where food could be trapped.
  • Allow the jawbone to develop properly, possibly resulting in less of a need to extract adult teeth.
The Powerprox Six Month Braces® Technique is a fast, affordable way to give you the smile you always wanted in just six months – that’s right, six months! The Powerprox Six Month Braces® Technique will move your front teeth to their most beautiful position giving you a great smile. Whether your teeth are crowded together, overlapped, or have spaces between them, the Powerprox Six Month Braces® Technique will give you the smile you always wanted in just six months (see photos of actual cases below).

The Powerprox Six Month Braces® Technique utilizes the latest technology combined with time tested orthodontic techniques to move your teeth quickly and safely.
No. Actually the Powerprox Six Month Braces® Technique is a low force technique. Many people think we just “tighten” the braces like crazy to get the teeth moving. This would actually slow down tooth movement. To reiterate,the Powerprox Six Month Braces® Technique is a low force technique.
No, the causes for the above complications are individual biology and high forces over a long period of time.The Powerprox Six Month Braces® Technique uses low force with a short treatment duration to safely move the teeth.
No, the Powerprox Six Month Braces® Technique uses low forces to move the teeth not high forces that can cause pain.
No, actually since there are fewer visits, the Powerprox Six Month Braces® Technique is less expensive than Dr. Knuth’s regular braces.
Yes, we have both small metal and clear braces. The clear braces blend into your teeth making them nearly invisible.
We very rarely extract teeth using the Powerprox Six Month Braces® Technique.
Usually every 4 weeks for a 15 to 30 minute appointment, and a little longer for the appointment when we put the braces on. Usually treatment is completed in 10 visits or less. Also, patients of this office are seen on time, so you will not be waiting long to be seated for your appointment.
Yes, as with any orthodontic procedure a retainer is necessary. If you do not want to wear a retainer very long you can have your teeth splinted together.
Sedation Dentistry offers anxiety-free dental procedures as the patient is in a deeply relaxed state, though fully responsive. It means something even more important: a comfortable experience – often with no recollection of the time passed. We often hear from patients who express their gratitude and delight in their first ever visit to the dentist without fear.

Dr. Knuth only wants to sedate you enough to make you relaxed, and let you have a comfortable experience.  Dr. Knuth has received extensive special training in dental sedation. Dr. Knuth has a number of conscious sedation techniques that deliver excellent results for the vast majority of dental patients.

  • Nitrous Oxide

Nitrous Oxide sedation is a very effective way for Dr. Knuth to help you stay relaxed and comfortable during a dental procedure. It is a very light form of sedation, which works fast and wears off quickly.

  • Oral Sedation

Oral sedation is a wonderful option for patients as it allows you to be comfortably sedated through an entire dental visit using just a small pill.

Oral Conscious sedation is modern dentistry that lets even the most high fear patient have a relaxing and comfortable dental visit. Since the patient is comfortable, Dr. Knuth is able to accomplish the work of several appointments in just one.  When Dr. Knuth uses conscious sedation, you don’t really fall asleep, even though sometimes it feels like you did. That’s because sedation feels so relaxing and peaceful that the patient doesn’t even notice the passing of time. Many of the medications used in oral conscious sedation have an amnesiac effect as well, leaving patients with little or no memory of their dental appointment, and further adding to the feeling that the patient was asleep.

While all methods of sedation are very safe, the history of oral sedation has been especially safe as well as very effective. Dr. Knuth use very common medications that are extremely safe and widely prescribed. Your vital signs will be constantly monitored from the moment you arrive at the office and throughout the entire appointment, and until Dr. Knuth is certain you are ready to leave. Dr. Knuth has taken extensive training with DOCS (Dental Organization for Conscious Sedation) to ensure that you are completely safe and comfortable.  In fact, Dr. Knuth and his whole dental team are highly trained in safety and emergency procedures, making the dentist office one of the safest places you can be!

Generally, you will be given a prescription for a pill to take before your appointment. Since this is a sedative medication, you will need a companion to drive you to the appointment. Once you arrive, Dr. Knuth and his staff will begin monitoring your vital signs, including heart rate and blood pressure, to make sure that you stay completely safe through the procedure. He will then assess your level of sedation, and ask how you feel. In some circumstances, Dr. Knuth may use more medication, but often this is not necessary. The dentistry will all be performed while you are relaxed and comfortable. When it is safe for you to move about, your companion will take you home, and then you will rest comfortably for the rest of the day.

Do you snore loudly? Wake up several times during the night, or feel tired throughout the day?sleep_apnea_1024x378
If so, we may be able to help. Dentists are increasingly being asked to help screen for sleep apnea and treat mild to moderate cases with an oral appliance.

Sleep apnea is a serious and life-threatening condition; 15%, or, 1 out of 6, people living in the U.S. suffer from sleep apnea. According to the American Sleep Apnea Association, “sleep apnea is an involuntary cessation of breathing that occurs while somebody is asleep. These episodes without breathing can last 10 seconds to 2 minutes or longer. A person can have up to hundreds of episodes per night.” Left untreated, sleep apnea’s effects can range from daily disturbances to dangerous health conditions such as heart disease, stroke, high blood pressure, and obesity.

Over this past year we have become more aware and educated about the dangers and effects of poor sleep on a person’s overall wellbeing and health. My team and I have recently partnered with Sleep Enterprises, Inc, to offer our patients a simple at-home sleep study to determine if you suffer from this condition.

The oral device is a fitted, retainer-like appliance that you wear while sleeping to help you breathe normally. This allows for snore-free, uninterrupted sleep so you can wake up feeling rested in the morning. There are several different types of dental appliances available, and our evaluation will determine which best suits your needs.


Please review the FAQ below or call us today to schedule a free consultation if you, a friend or family member. A good night’s sleep has the power to restore the body, enliven the mind, and even save your life — let us help!

Contact us if you suffer from at least 2 of the following indicators:

• Grinding (Bruxism)
• High Blood Pressure
• Diabetes
• Vertigo
• Acid Reflux
• Fatigue
• Kidney Problems
• Snoring
• Sudden Weight Gain
• Tired during the Day
• Dizziness
• Arrhythmia
• Headaches
• Obesity

NO. We offer a portable and easy way to have a sleep study done in the comfort of your own home and, most importantly, your own bed. A portable monitoring device is mailed to you with all the equipment and instructions. You wear it one night and return the equipment the next day in a prepaid postage envelope. It was just that simple and easy.
For most plans, the answer is YES. Medicare and many medical insurance carriers recognize a home sleep study as an accurate and efficient way to rule out obstructive sleep apnea. As a result most insurance plans are starting to cover this expense.
The treatment options for sleep apnea vary depending on the severity of the problem. Someone with mild or moderate sleep apnea may benefit from wearing a dental appliance. The appliance looks similar to an athletic mouthguard or retainer, and repositions the jaw and tongue forward to improve airflow. It often times is covered by insurance and Medicare, and may require very little out-of-pocket expense. Treatment for severe sleep apnea requires more aggressive management, which may include the use of a CPAP machine.
In most cases, the answer is YES. We will coordinate with your family physician and get a copy of the sleep test results.
A certified dental appliance may be an alternative treatment for patients who are not able to tolerate or possible afford a CPAP.
NO. Instead of using an electronic device and air pressure to keep an airway open, the oral appliance keeps the jaw in a forward position that prevents the airway from ever getting blocked in the first place. An oral appliance becomes comfortable quickly and is non-invasive.