Dr. Mark Thornley is Cache Valley’s comprehensive dentist, offering the highest quality professional care in a modern and comfortable setting. Our practice offers an advanced approach to dentistry, providing a relaxing experience and thorough treatments, resulting in beautiful smiles that last a lifetime.

Our quality dental services include:

  • Personalized treatment plans

  • Regular Checkups, Exams and Cleanings

  • Diagnostic Digital X-rays

  • Crowns and Veneers

  • Professional Tooth Whitening

  • Non-Surgical Periodontal Therapy

  • Root Canals

  • Tooth Extractions … and More!


  • I’m so grateful to have a dentist that I can take my family to and know for certain that they will get the very best dental care! I have never been so well cared for by any doctor in my whole life. Thank you so much! I’m amazed at how smooth and easy my dental appointments have been. I can honestly say I love going to the dentist!

    A Google User
  • The staff so kind and attentive. I really felt like I could trust Dr. Thornley and that he cared about my unique situation. I feel very optimistic about the future of my smile. I highly recommend this office.

    Amy — 1/24/2015
  • Hands down the best dental office I’ve ever had the pleasure of visiting. Their receptionists were as kind and helpful as could be. The dental assistants were friendly and accommodating, and Dr. Mark Thornley was as funny and courteous as he was skilled and knowledgable. I highly recommend them!

    Reviewed by Benjamin Burnley Review 1 – Rated 5 / 5


Our goal at Thornley Dental is to provide you with the very best dental care service from one of the top general and cosmetic dentists in Cache Valley, in a relaxed, caring and family friendly environment. Whether you need general dental work, such as routine exams, cleanings, fillings, crowns, inlays, onlays, restorative work, non-surgical treatment for gum disease, and implants, or cosmetic services such as bonded or porcelain veneers, or an entire smile makeover, Dr. Thornley and the team at Thornley Dental believe you should be treated with the respect, friendliness, and skill you expect. Below you will find just a few of the many qualities that set Thornley Dental apart from other dental offices.

Dr. Thornley’s convenient downtown Logan location has plenty of parking for patients and appointment hours that fit your schedule. We take the time to discuss your needs and expectations. During your procedure, sit back and relax while you watch one of our wide selection of DVDs (or bring your own). The time will fly right by! Contact our office today, and discover an innovative dental practice that is centered on your health and comfort.

We Listen To You

In order to provide you with the best care possible, we actively listen to your questions and concerns, and treatment preference. This allows us to involve you in every step of your oral health care so we can determine together which treatment choices best fit your needs and desires.

Prevention First

Prevention is at the core of the Thornley Dental approach.  As teeth problems get progressively worse, people find that along with increased discomfort, they also encounter loss of control of their schedule and finances to dental problems.  The good news is that most painful and costly dental conditions are avoidable. You’ll likely find our dental exams to be more thorough than what you are accustomed to. This allows us to inform you of potential concerns and work together to prevent more significant damage and loss of control.

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N89792356_47ever Compromise on Quality

We never, ever compromise on quality. When prevention or reversal of a dental problem are not options, we believe in doing things right the first time. Everyone at Thornley Dental takes extra steps to achieve long-lasting, highly functional, and exquisitely beautiful results. Whether providing restorative dental care, cosmetic dentistry, kid-friendly care or an entire smile makeover, we use the most advanced, world-class technology and training available.

Request An Appointment Today!