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Lorne Park Dentistry

Your south Mississauga neighbourhood dental office since 1984

Our highly experienced team is dedicated to providing you with the personalized and sensitive care that you deserve. We strongly believe in our responsibility to provide you with our best professional opinion, including a thorough discussion of all options to help create a personalized treatment plan - while recognizing we always need to proceed at a pace you are most comfortable with.

We believe everyone deserves a healthy smile they are proud of

Your Dentists

Dr. Missy D'Souza & Dr. Brenda Thomson

Dr. Missy D'Souza

Dr. Missy D'Souza combines her clinical skills with a warm and gentle personality to put even the most apprehensive patient at ease. Dr. Missy loves providing great dental care to families and is very proud that 3 generations of one family - from toddler to grandparent - have chosen her as their dentist. Born in Daegu, South Korea, Dr. Missy grew up in Sudbury, Ontario. Dr. Missy has been practicing dentistry in Mississauga since 2006. She is a member of both the Canadian and Ontario Dental Associations.

Dr. Missy has a Doctor of Dental Surgery degree from Dalhousie University and an Honours Bachelor of Science degree in Biochemistry from Laurentian University. During her academic years, Dr. Missy was awarded 3 prestigious grants to conduct research at the University of Toronto. Her work on the biodegradation of dental composites was presented at the leading forum for dental research – The International Association for Dental Research General Session. She has also co-authored 2 papers in the scientific literature.

Continuing Education
Dr. Missy is dedicated to life-long learning. To expand and advance her skills, she attends several continuing education courses each year. She has completed additional studies in esthetic and cosmetic dentistry, implant dentistry and endodontics. 

Family & Community
Dr. Missy is a loving mom to 3 little boys including twins. She is married to Clarkson native and Citytv anchor Francis D'Souza. Dr. Missy is highly committed to the Clarkson and Lorne Park communities. You may have seen her in the local arenas where her children play hockey, at Birchwood Park where they play tee ball and baseball or even at St. Christopher's Catholic Church on Clarkson Road. She has visited local schools and taught hundreds of kindergarten and Grade 1 students about the importance of healthy teeth and mouths. Her and her husband also support the Peel Children's Aid Foundation through the annual presentation of the D'Souza Family Bursary to support the post-secondary education of a child in care.

Dr. Missy is an avid card player and loves board games. She loves to sing, dance and swim. Her and her family also love to travel. They have toured extensively through Asia and even attended the Winter Olympics in PyeongChang and met some of our Canadian Olympic heroes in snowboarding and hockey.

Click below to email Dr. Missy

Dr. Brenda Thomson

Dr. Brenda has been practicing general dentistry on Lorne Park Road for more than three decades. She is a fellow of the American College of Dentistry, a fellow of the International College of Dentists and a fellow of the Pierre Fauchard Academy. As well Dr. Brenda was honoured with the Ontario Dental Association’s Governance Leadership Award in both 2002 and 2004. In 2009 she received the Halton-Peel Dental Association’s Service Award and in 2012 was presented with the ODA Award of Merit. 

Dr. Brenda completed her Doctor of Dental Surgery degree at the University of Western Ontario and her Honours Bachelor of Science degree in zoology at the same University. During her dental program she was on the Dean’s Honour Roll for dentistry and received the paediatric award for children's dentistry.

Continuing Education
Throughout her career, Dr. Brenda has been extremely active in continuing education, significantly expanding her practice capabilities.

Dr. Brenda has been strongly committed to improving her community, with sponsorships including: Interim Place, Renaissance Place, the Canadian Cancer Association, Trillium Hospital, the Eye Foundation of Canada and Heart House Hospice (formerly Hospice of Peel).  She was president of the Halton-Peel Dentistry Association, president of the Women Dentists Association of Ontario and a councillor for the Ontario Dentistry Association.

Dr. Brenda leads an active lifestyle with a particular passion for skiing. She has qualified as a Level 2 ski instructor, and has trained in Canada, the US, Europe, Latin America and Japan. Her other interests include curling, tennis, travel and family – including two grandchildren.

Your Hygiene Team

Providing stress free hygiene treatments for the past 29 years

Three decades of experience ensuring every smile is healthy and beautiful 

Loves to learn and always provides patients with the latest hygiene techniques

Patient Care Team

Happily serving our patients since 2001 with a big smile and a big heart

Treating patients like family since 1990, working alongside Dr. Missy

Always ensuring patient comfort while working alongside Dr. Brenda 

The friendly voice on the phone who's been in the dental field for over 25 years

The familiar face that will greet you when arrive and make you feel at home


Monday 7:30am - 5:30pm

Tuesday 7:30am - 5:30pm

Wednesday 7:30am - 8:00pm

Thursday 7:30am - 5:30pm

Friday 7:30am - 5:00pm

We try to manage the schedule carefully so patient wait times are negligible and so our dental and hygiene professionals can fully dedicate their time to your planned treatment.

Our staff will set a specific time for your dental visit. Please arrive on time or a few minutes early to ensure you receive the comprehensive oral care that you require, without any significant wait time.

We do understand that unexpected events may cause a late arrival. If you are running late we will attempt to accommodate your needs without disrupting our scheduled time with other patients. But please let us know as quickly as you can. While we are masters of juggling, extra lead time helps!

If you are unable to keep a scheduled appointment, we ask that you provide us with at least 48 hours notice so your appointment time may be offered to another patient in need of care.

Your insurance plan is a contract between you and the insurance carrier/your employer. As such, you are responsible for your account, not the insurance carrier. We ask that you provide our front desk team with your policy number and coverage information and inform us of any changes to your current dental insurance policy and personal information.

Where possible, we will assist you in optimizing the benefits available under your policy. As a courtesy to you our patient care team will submit your claims to your insurance carrier. We offer electronic submission (EDI) where possible to expedite the claim process. Most payments are processed in a few days rather than a few weeks.

When extensive treatment is planned, we will send a detailed estimate or pre-determination to the insurance carrier(s) involved. In most cases, the response is sent to the insured/employee within 2-3 weeks. Please note that for privacy reasons, the insurer must inform and communicate with you as its client – not with the dental office.

As a convenience to you we accept major credit cards (Visa & MasterCard) and debit cards. Patients are expected to make payment immediately following their treatment appointment.

We accept most insurance plans. All patients are expected to pay any portion of the cost of treatment not covered by their insurance plans (co-insurance) upon completion of their treatment appointment.

In those rare cases where you are not able to settle payment on the day of treatment, we kindly ask that accounts be resolved within 30 days from the date treatment is delivered. In order to avoid late charges, prompt payment is advised.  

The protection of personal information is an important principle in the provision of quality dental care to our patients. We understand the importance of protecting your personal information and we respect the privacy of all our patients.

All contact and personal information gathered is for internal purposes only and will never be shared with any third party without prior notice or consent. We comply fully with federal privacy legislation, the Privacy Information and Protection and Electronic Documents Act (PIPEDA).

Become a valued patient today

Contact us with questions, learn more about a treatment or book your appointment

Office Hours

Monday  7:30am - 5:30pm
Tuesday  7:30am - 5:30pm
Wednesday  7:30am - 8:00pm
Thursday  7:30am - 5:30pm
Friday  7:30am - 1:00pm


Phone  (905) 274 6678 
Fax  (905) 274 6794

We are wheelchair accessible


1150 Lorne Park Road
Unit 14
Mississauga, ON L5H 3A5 
next to Battaglia's Marketplace

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