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N.J. Nicastro Dental - A Dental365 Company

Office Information

5225 Nesconset Hwy., Ste. #52, Port Jefferson Station, NY 11776

Hours of Operation

  • Monday: 8:30am - 6pm
  • Tuesday: 8:30am - 8pm
  • Wednesday: Closed
  • Thursday: 8:30am - 6pm
  • Friday: 8:30am - 1pm
  • Saturday: 8am - 1pm
  • Sunday: Closed
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Gentle and Professional Care for the Entire Family, in Port Jefferson Station, NY

Welcome to N.J. Nicastro Dental – A Dental365 Company, where you can find almost every aspect of dentistry for the whole family. N.J. Nicastro Dental – A Dental365 Company began as a family practice run by father and son, and we continue to provide that “family” aspect by treating our patients as we would our own loved ones. We have proudly served the Long Island area for over 40 years, and invite you to join our dental family today by contacting us today to schedule an appointment at 631-928-2020.

Here at N.J. Nicastro Dental – A Dental365 Company, we put your needs and personal comfort first. Your smile is personal, and so is your dental care. Our dentists, Drs. Nicastro and Felpo, are committed to helping you find the right treatment and ensuring that your opinion and preferences are included in each step of your dental care. We are pleased to care for your smile by providing comprehensive dentistry in Port Jefferson Station, New York.

Cosmetic Dentistry in Port Jefferson Station, New York

You can achieve a brighter, more beautiful smile by visiting N.J. Nicastro Dental – A Dental365 Company for cosmetic dentistry in Port Jefferson Station, New York. Our skilled dentists, Drs. Nicastro and Felpo, can help you address unwanted smile flaws by offering high-quality, smile-enhancing treatments, such as:

Porcelain Veneers

Porcelain dental veneers can help you mask unwanted smile flaws, such as gaps, chips, fractures, and misshapen teeth. If dental veneers are right for you, Drs. Nicastro and Felpo will provide you with custom-made veneers to match your smile. You are welcome to visit our dentists at N.J. Nicastro Dental – A Dental365 Company if you would like to learn more about dental veneers in Port Jefferson Station, New York.


Invisalign aligners are often a good choice for adult patients and others who are interested in a virtually invisible orthodontic treatment. In addition to being discreet, Invisalign aligners are very comfortable because they are custom made from smooth, thin plastic. The aligners are removable as well, which allows you to easily remove them as needed to eat, brush and floss. We welcome you to call or visit us today to learn more about Invisalign clear aligners.

Teeth Whitening

If you have ever wished that your smile were whiter and brighter, teeth whitening might be right for you. Through professional teeth whitening, we can lighten staining and discoloration caused by various factors. Our dentist will work with you to determine the right type of treatment and treatment length to achieve the smile aesthetic you desire. To learn more about professional teeth whitening and to set up your consultation at our office, please call us today.

General & Family Dentistry in Port Jefferson Station, New York

We invite you and your family to visit N.J. Nicastro Dental – A Dental365 Company for your dental needs. Drs. Nicastro and Felpo and our team provide patients aged five and up with general and family dentistry in Port Jefferson Station, New York. You can improve the health of your smile with the following treatments:

Dental Exams & Cleanings

Dental cleanings and exams are two of the most basic yet important preventive treatments we provide at our office. Each time you visit our dental practice for a checkup, we will provide a professional teeth cleaning and dental exam to help your smile stay healthy. During your cleaning and exam, our dental team will:

  • Clean your teeth by removing any plaque or tartar (also called dental calculus), which can lead to tooth decay and periodontal disease
  • Floss and polish your teeth for a healthy, bright smile
  • Examine your smile for signs of any damaging dental conditions or diseases

We recommend that you visit us every six months for a routine dental cleaning and exam. We may suggest more frequent visits if needed, and we also encourage you to contact us if you suffer from a dental emergency, pain or injury. To schedule your next appointment, we invite you to contact us today.


At our office, we are committed to utilizing advanced dental technology to always provide you with the highest level of dental care. We are proud to utilize cone beam 3D imaging technology at our practice. Cone beam 3D technology is an imaging system that provides our dentist and team with a three-dimensional image reconstruction of your teeth, mouth, jaw, neck, ears, nose and throat. To learn more about cone beam 3D imaging and how it helps us provide you with exceptional care, we invite you to contact us today.

Digital X-Rays

Digital X-rays are one of the advanced diagnostic tools we use to provide you with the best possible care. Digital radiography has changed the way we take dental X-rays by making the process faster, more comfortable and more convenient than ever before. Digital X-rays use a digital sensor to take images of your teeth, unlike traditional X-rays that use film. Digital X-rays use significantly less radiation than conventional film X-rays and require the use of no chemicals for developing the images. Our dentist can then instantly view the high-quality images on monitors right in the treatment room to provide you with efficient, accurate diagnoses and care.

Panoramic X-rays

In order to provide you with the best possible care, it is essential for our dentist to accurately evaluate and diagnose your oral health. One of the state-of-the-art tools we use to do that is panoramic X-rays. While standard X-rays, called bitewing X-rays, provide us with a view of a few teeth and the supporting bone structure, panoramic X-rays allow us to view the full upper and lower dental arches — including all of the teeth, the upper and lower jawbones, and the surrounding facial structures.

Using the panoramic X-ray machine is fast and comfortable. The machine simply rotates around your head and provides our dentist with high-definition, nearly instantaneous images that we can then use to evaluate your oral health. We invite you to call or visit us today to learn more about panoramic X-rays.

Oral Cancer Screening

Oral cancer includes cancers of the lips, tongue, floor of the mouth, cheeks, throat (pharynx), sinuses, and hard and soft palate. While oral cancer can usually be successfully treated when detected early, most cases of oral cancer are not detected until they have progressed into a more serious, advanced stage that is much more difficult to treat. In fact, oral cancer may be life-threatening. At our office, we are dedicated to doing all we can to detect and treat oral cancers and other abnormalities at the earliest possible stage. During your routine dental cleanings and exams at our office, our dentist and team will perform an oral cancer screening to check for the signs of oral cancer. We are committed to helping you stay in good health.

Gum Disease Treatment

Red, irritated, and bleeding gums can be a sign that you need to visit N.J. Nicastro Dental – A Dental365 Company for gum disease treatment. Drs. Nicastro and Felpo offer a variety of services to treat gum disease in Port Jefferson Station, New York, and we are happy to work with you to determine what is best for your smile. Contact our office today to learn more and schedule an appointment with our dentists.

Scaling & Root Planing

Scaling and root planing is one of the most common and effective treatments recommended for gum disease before it becomes severe. The goals of scaling and root planing are to remove bacteria, plaque and tartar, and to halt the progress of the disease. While most scaling and root planing treatments can be completed comfortably without an anesthetic, our dentist can offer several anesthetic and other comfort options to make certain that you feel at ease during your treatment. The scaling and root planing treatment may be split up into several appointments, in which we treat one section of the mouth at each appointment. For more information about the benefits of scaling and root planing and to learn more about the other types of periodontal treatment we offer, please do not hesitate to contact our office.

Tooth Extractions

Tooth extraction is the removal of a tooth. While we strive to avoid the need to remove a tooth whenever possible, certain conditions may make tooth extraction the most effective option for returning your smile to good health and function. Following the tooth extraction, we are happy to provide you with one of our excellent tooth replacement treatments to restore your smile to optimal health, beauty and function. For more information on tooth extraction and to schedule your personalized consultation at our friendly dental office, we invite you to call or visit us today.

Restorative Dentistry in Port Jefferson, New York

You no longer need to worry about tooth loss or dental damage when you visit our dentists at N.J. Nicastro Dental – A Dental365 Company for restorative dentistry. Depending on your dental needs and personal preferences, Drs. Nicastro and Felpo may recommend one or more of the following services:

Ceramic Crowns

A dental crown, or cap, is a restoration that can be used for a number of purposes. One of the most common uses of a dental crown is to restore a tooth that is significantly damaged or decayed. The crown is custom made to fit over the entire tooth, starting at the gumline, in order to restore the tooth to its original shape and size. Dental crowns can be made of gold, porcelain or porcelain fused to metal; porcelain crowns are popular because they match the natural color and appearance of your teeth. Our dentist will help you determine which type of dental crown is right for your smile.

Composite Fillings

The process for placing a dental filling requires just one comfortable visit to our office. Our dentist will first remove the decayed and damaged portion of the tooth, then clean it to remove all traces of decay. We then fill the area with the filling material and shape it to match your tooth’s shape. Finally, the filling is hardened by our dentist for a lasting restoration.

Dental Bridges

If you are missing a single tooth or multiple teeth in a row, we may recommend a dental bridge to restore your smile. A bridge is a fixed dental restoration, meaning it is non-removable. The dental bridge is anchored in place through the use of two dental crowns, which are custom made to fit your smile and are placed on the teeth or dental implants next to the space left by the missing tooth. These crowns hold the artificial tooth in place to restore your smile, ensuring that your restoration will not easily shift or come loose. It typically requires only two visits to our practice to complete a dental bridge. Dental bridges are designed to last for many years and to restore the function, beauty and health of your smile.

Dental Implants

Replacing a missing tooth can restore your smile to optimal health, function and appearance. A dental implant is a great option for restoring your smile because the implant is designed to look, function and feel just like your natural teeth, and with proper care, it can last a lifetime. For more information about the benefits of implant dentistry and to schedule your implant consultation, please call or visit us soon.


Our dentist may recommend complete or partial dentures to restore your smile if you are missing multiple teeth; dentures can improve your ability to properly speak and eat, restore your natural facial volume, and enhance the overall beauty of your smile. Your dentures will be custom made to fit your smile comfortably, aesthetically and securely. We invite you to call or visit us soon to learn more about how dentures can improve your smile!

Full Mouth Reconstruction

During your personalized consultation with our team, we will help you determine which of our high-quality treatments are best suited to improving your smile. The goal of full-mouth reconstruction is to restore the health, function and appearance of your smile. Our experienced dentist and team are pleased to provide full-mouth reconstruction to help you achieve a healthier, more attractive smile.

Root Canal Treatment

Root canal treatment has a reputation for being a painful treatment. In reality, however, root canal treatment can often be completed with minimal discomfort thanks to advanced techniques, tools and anesthesia. Our dentist and entire team work hard to provide you with a pleasant and comfortable experience each time you visit our office. To learn more about root canal treatment, we welcome you to contact us today. We are committed to restoring your smile’s health.

Contact Our Dentists in Port Jefferson Station, New York

Thank you for visiting N.J. Nicastro Dental – A Dental365 Company online! Our friendly, experienced dentists and team offer almost every aspect of dentistry under one roof so that our patients can enjoy convenient, comprehensive dental in Port Jefferson Station, New York. We invite patients ages five and up in the Long Island area to achieve healthy, beautiful smiles. Contact us today to schedule your next appointment!


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