Thomas R. Renna DMD
Phone: (973) 627-7001
4 2nd Ave #108
Denville, NJ 07834

Thomas R Renna, DMD General Dentistry

Our Practice in Denville, NJ 

We are pleased to welcome you to our practice! We want all our patients to be informed decision makers and fully understand any health issues you face. That's why we've developed a website loaded with valuable information about dental problems and treatments. We encourage you to visit this site whenever you have any concerns about your teeth.

Our website also provides you with background about our, staff, office hours, insurance policies, appointment procedures, maps, directions to our office in and other useful information. We know how hectic life can be and are committed to making our practice convenient and accessible. And we want you to feel confident that when you choose , you're working with doctors and other professionals who are qualified, experienced and caring.

Please take a few moments to look through this site to get a better feel for Thomas Renna, DMD's capabilities and services. We also invite you to email or call our office at any time to request an appointment or ask any questions. Thank you.


Hours of Operation

Our Regular Schedule

Primary Location


8:30 am-12:30 pm

2:00 pm-6:00 pm


8:30 am-12:30 pm

3:00 pm-8:00 pm




12:00 pm-8:00 pm


8:30 am-1:00 pm





Meet Our Staff

Learn Who We Are

  • Dr.
    Thomas R. Renna

    Dr. Renna was born and raised on Long Island. While in high school his family dentist encouraged him to consider a career in dentistry. Dr. Renna stayed on Long Island to attend Stony Brook University, where he majored in engineering and biology. Upon graduation, Dr. Renna moved to New Jersey to attend Fairleigh Dickinson University School of Dentistry, where he served as class president. Dr. Renna began his dental career in Fort Lee, and shortly after opened his private practice in Morris County, first in Montville and then Denville, where he practices today.

    Dr. Renna is a 30-year resident of Mountain Lakes, where he and his wife Nicole raised their three daughters. He will tell you that one of the highlights of his career was volunteering as a team dentist for the Penn Women’s Lacrosse team. Dr. Renna is certain his custom-made sports mouthguards were instrumental in Penn’s winning 3 consecutive Ivy League championships. Dr. Renna is a Member of both the Academy of General Dentistry and the Academy For Sports Dentistry.


    I have been going to Dr. Renna since i was a child and now my kids see him as well. He is one of the best dentists i know, caring and really listens to the patient. The way he treats my kids makes it so seeing the dentist has become an enjoyable event. I highly recommend him to anyone that is looking to get dentistry work done.

    Melanie U.

    Painless, Gentle, Caring, & a Perfectionist best describes Dr Renna. I’ve been a patient here for a very long time. His staff, Evelyn & Carol Anne are extremely professional, efficient, & friendly. You can definitely trust them to take wonderful care of you.

    Denise S

    Always a pleasant greeting at Dr. Renna’s office! He has the best chair-side manner of any doctor I’ve ever seen. Always explains what he’s doing & gives a pain free shot !! Not sure how he does it but I’m so thankful ! Sit back, relax & enjoy time with your feet up !

    Danielle F.

    Dr Renna is not only a gentle caring dentist, he puts an artistic flair into everything he does .I could not believe the difference in his crown and fillings from my last dentist I only wish I had been referred to him sooner. He has one of the nicest and knowledgeable staffs I've ever dealt with. I would highly recommend them.

    Rick B.

    The best dentist and staff you will ever experience, I've been going here for over 20 years! Dr Renna's expertise and personal attention from their staff is paramount to their competition guaranteed.

    Tracy P.

    Dr.Renna is for sure the best around!! Everyone in the office is always so friendly and kind, too! I would definitely recommend!!

    Zoe F.

    I cannot say enough good things about Dr. Renna and his staff, Carolann and Evelyn. Dr. Renna is an excellent dentist who makes you feel at ease and comfortable. I have been under his care for about four years and could not be happier with the work he has done on my teeth. I would highly recommend him.

    Anna A.

    I have been a patient of Dr. Renna for about two years and he maintains a high degree of professionalism and expertise. He communicates well taking the necessary time to explain what procedures are necessary. He knows when to bring in outside expertise.I am very satisfied with the service and treatment he has provided

    Leonard D.

    I have been going to Dr. Renna for 26 years and despite moving down the shore 10 years ago, I still make the trek up to his office for my dental care. He has done some amazing major dental work on me and my family and there’s nobody else we trust with our teeth! His staff is lovely and you get the feeling you’re seeing old friends every visit. Look no further, Dr. Renna is the best dentist there is.

    Peter R