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Female white toothy smile


Meet Us: Welcome
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All professionals at Pinnacle Dental Group maintain the highest levels of accreditation and pursue ongoing education to stay abreast of the latest trends in the medical field. Read on to learn more about our staff's experience and training.

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Dr. Justina Mockunas graduated in Lithuania from Kaunas University of Medicine, College of Dentistry where she obtained her DDS Degree in 2008. In 2017 she got accepted into Advanced Standing Program at NYU Langone Health and obtained Certificate for her 2 year Advanced Education In General Dentistry residency in 2019. Soon after this Dr. Mockunas moved to Chicagoland area and received her accreditation by CODA and obtained an IL dental license.

During her years of practice Dr. Justina has learned that making others smile from inside out is what drives her into becoming a better dentist everyday. She feels rewarded with being able to improve a patient’s self esteem and confidence by creating a healthy beautiful smile. Dr. Justina’s knowledge, gentle chair side manner and positive personality decreases her patient's dental anxiety. She enjoys educating her patients about oral health. Dr. Justina constantly is seeking excellence in dentistry by continuing education to better serve her patients.

Additional Language: Lithuanian



Business Operations & Development

Hi, I'm Giedrius and I am a full time business operations & development specialist at Pinnacle Dental Group. I am grateful to be a  part of a wonderful and caring dental team. I have been in business operations and management since 2010. I finished my Bachelor of Science degree in 2010, as well as Master's in Business Administration from Lewis University in 2014. Since then, I have worked for organizations such as Deloitte, State of California, and Robert Bosch.

My favorite thing about being in business operations is that every part of business operations, whether it is marketing, accounting, or administration is always changing and a business must adopt these changes in order to move forward.

In my spare time I enjoy spending time with my family;  traveling, as well as playing sports, such as basketball.

Additional Language: Lithuanian



Dental Hygienist

Hello, my name is Erin and I am a full time registered Dental Hygienist here at Pinnacle Dental Group.  I am excited to be part of such a dedicated and compassionate office.  I have been in the dental field since 2001.  I graduated with honors from Kalamazoo Valley Community College in 2006 with an Associates of Science Degree in Dental Hygiene.  I am certified to administer local anesthetic and also have a current CPR certificate.  
One of things I love most about being a dental hygienist is the opportunity to meet new people and help them achieve their best smile through education on their oral health.
When I'm not spreading smiles through treatment or education I enjoy spending time with my husband Jim and children Noah and Jamie.  
I look forward to meeting you at Pinnacle Dental Group and sharing my passion for dental hygiene to help you achieve oral health in order to maintian overall health.


Dental Hygienist

Hi, I'm Sarah. I've been a hygienist at Pinnacle Dental since 2017.

I graduated from Prairie State College with my Associate in Applied Science- Dental Hygiene degree in 2012. After working in private practice for a few years I decided to complete my Bachelor of Science degree. Since completing my Bachelor's from Minnesota State University- Mankato in 2016 I have been an adjunct faculty member in Prairie State College's Dental Hygiene Program. I am certified in CPR, nitrous oxide sedation, local anesthetic, and laser periodontal therapy.

In my free time I love to spend time with my husband, our son Bobby, and our dog Jasper. We love finding new trails to explore!

I love being a hygienist because making people feel good and learn how to better care for themselves are things I am passionate about. I also enjoy forming relationships with my patients and hearing about exciting things in their lives. My co-workers and our patients at Pinnacle truly make it so easy to come to work!



Dental Assistant

Kaleigh is a 2013 Graduate of the Dental Assisting Program at College of DuPage. She is a full-time, certified dental assistant currently in pursuit of an associates degree in health sciences.
Kaleigh assists Dr. Justina during procedures and helps provide patients with a calming environment. She also has a current CPR certificate.
"The best thing about working a Pinnacle Dental would be how each of our team members make patients excited about their oral health! Working with people who share the same passion is truly a blessing".



Team Lead

Hi, I'm Kylie and I am the Office Manager at Pinnacle Dental Group. In 2014 I received my Associates Degree in Business Administration.
As an Office Manager I am always eager to answer any questions that patients may have and make sure our office is running smoothly and effeciently. I enjoy meeting new patients and coordinating the daily office activities. One of my priorities is making sure all our patient's dental insurances are up to date and explained to the best of my abilitly. I want to make sure every patient has a positive experience.
Please stop by the front desk and say hello!

Meet Us: Meet the Team


Dental Assistant

My name is Milda and I am the newest addition to this wonderful team here at Pinnacle dental Group. My husband and I have been traveling the world for the last 10 years and recently decided to move closer to family here in Plainfield area and raise our newest addition, our son Sawyer. 

I am thrilled for the opportunity to learn and grow my dentistry knowledge with this dynamic team of experienced dental professionals. 

I look forward to helping everyone obtain the oral health they desire!



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Meet Us: Opening Hours
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We work the following dates & hours:

Mon: 9 am - 5 pm
Tue:   9 am - 6 pm
Wed:  9 am - 3 pm
Thu:  9 am - 6 pm
Fri:    By Appointment
Sat:   By Appointment
Sun:  Closed

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