GLO Whitening

Your Whitest White in Under an Hour!

Dr. Roland G. Nentwich, DDS is a proud provider of GLO Science PRO, the latest in teeth whitening technology. The G.L.O. (Guided Light Optic) Science has revolutionized the dental industry by providing patients with a practical, yet effective, approach to teeth whitening and oral health. This cutting-edge professional treatment whitens teeth up to 5 shades in just one office visit, with minimal sensitivity. The treatment is fast, comfortable and can be completed in less than one hour.

Whiter Teeth at Home or On-The-Go

Want to maintain your bright smile at home? We offer GLO technology you can take home with you! Perfect for upcoming events like weddings, vacations and corporate gatherings, the GLO professional take home whitening kit allows you to put your best smile forward when it matter the most.


How it Works

It starts with a fully charged GLO control device that is worn like a lanyard around the neck. The mouthpiece is attached to the control (similar to the way you would plug in headphones to a phone) and a thin layer of GLO Lip Care is applied to the inside of both the top and bottom lips.

Next, the Whitening G-Vial gel is applied to the top and bottom teeth and the whitening mouthpiece goes in with the top facing upward.

In just eight minutes, the GLO Brilliant Teeth Whitening Device uses gentle heat and light to enhance the whitening gel inside the mouthpiece for fast, long lasting results. These steps are repeated three more times for a total of 4 applications in just 32 minutes. During that time you are free to text, check email, do light chores or simply RELAX!

Boost your confidence and experience the GLO difference at home or with a professional treatment in our office. Contact us to schedule your GLO appointment today!

Logo 2 Roland G. Nentwich D.D.S in Shrewsbury Holden, MA


D.D.S.  M.S.  P.C.

October 2023

Due to unforeseen circumstances, our offices have immediately and permanently closed. 

It has been our joy and privilege to serve the Shrewsbury and Holden communities for over 25 years. 

Thank you to all our former patients and their families and our referring dentists.  We wish you and our local orthodontic colleagues all the best.

For current patients, although we are unable to continue to offer orthodontic care, please be assured that we are working tirelessly to help ease your transition to new providers.  If you have specific questions or issues, please email us at  We are responding to messages as quickly as we are able.


All of us at
Dr. Roland Nentwich DDS MS

506 Main Street
Shrewsbury, MA 01545
1084 Main Street
Holden, MA 01520