Your south Mississauga neighbourhood dental office since 1984

The highly experienced all female team at Lorne Park Dentistry, led by Dr. Missy D'Souza, is dedicated to providing you with the safe and personalized care you deserve. We've come so far together and even with the Omicron variant present in our community, rest assured, the health and safety of you and your family is our top priority, as it always has been. 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 are taking all the necessary steps to ensure the safety of our patients and our team.


Mandatory pre-screening for all of our staff and patients. If your health changes after you pre-screen please call us at (905) 274-6678


New infection control equipment including medical grade HEPA air purifiers and physical barriers


Very strict infection control protocols and PPE (respirators, gowns, face shields)


Medical grade HEPA air purifiers are in each treatment room

Meet our medical grade HEPA air purifiers

You and your family are safe in our hands. Even before COVID our dental office had the highest level of infection control. Dental teams are infection control experts. Some things may look a little different as we enhance our protocols. My team of highly trained professionals and myself will be wearing extra personal protective equipment. You will also notice our medical grade HEPA air purifiers in every treatment room. Contaminants are captured using the most proven, powerful filtration available: medical grade HEPA and activated carbon. And we'll also be asking you a few more questions before and at your appointment to keep everyone healthy. Please let us know if you have any questions. We'll be more than happy to answer them.

  • Dr. D'Souza is fully vaccinated (including a booster) and has expertise in infection control
  • All patients screened prior to booking appointments
  • Mandatory temperature checks
  • Mandatory daily staff screening
  • All treatment rooms isolated with barriers
  • Medical grade HEPA air purifiers in each treatment room
  • Entire team is equipped with PPE including P100 or N95 respirators, face shields and gowns
  • Physical distancing between staff, staff and patients (except in the clinical area), and patient/patient in the waiting room
  • Plexiglass barriers at the front desk
  • Touchless payment options available

Our Services

Treatments for the entire family

We'll treat your family like our family. Our accessible, barrier free office features state-of-the-art equipment including digital radiographs, electronic record keeping, intra-oral cameras for instant viewing of dental conditions and laser technology for dental and hygiene applications.

Cosmetic treatments

Teeth whitening, crowns, bridges, bonding and veneers. Change the colour, size, shape, and alignment of teeth. Fill in unattractive spaces, improve or correct bites, lighten or brighten the colour of teeth, repair decayed, broken, cracked or chipped teeth, replace missing teeth or old unattractive dental treatments. Our team will customize a treatment plan that will make you feel and look good.


Dental implants have quickly become the gold standard for the replacement of missing teeth. The multistage procedure will see an artificial root made of titanium inserted into the jawbone. An artificial tooth (crown) is then attached. Implant treatment is highly successful and produces attractive natural looking teeth with excellent chewing ability.

Preventative treatment

Our goal is to preserve your teeth and their supporting structures from disease and deterioration. Professional dental cleanings are performed by our highly experienced registered dental hygienists and includes the removal of tartar and plaque, teeth polishing, a safe fluoride treatment and an examination by Dr. Missy D'Souza. We also screen for any signs of disease including oral cancer.

Emergency care

Life is full of surprises so we'll ensure you get dental care when you need it the most. Our team is here to assist with sudden pain, swelling, inflammation, chipped or damaged teeth and lost fillings. Your initial assessment can even be done over the phone. We'll then advise you of the next steps.

Sport, sleep & night guards

Protect your teeth from contact activities. Protect your teeth from grinding. Treat snoring and dry throat to get a better night's sleep. We will take great care to create a custom mouth guard for all your sporting or sleeping needs. 


The new gold standard in the treatment of gum disease. Periowave™ is a painless, non-invasive procedure that works to kill the bacteria associated with periodontal disease. Our team will use a non-thermal laser light combined with a photosensitizing solution to eliminate many harmful bacteria and toxins. The process is safe, quick and very effective.

New patients are most welcome

Our gentle and friendly dental team is here to help with all your oral health care needs. If you have a question or dental concern, you'll be in good hands with us. When you visit our office for your first appointment we kindly ask that you arrive about 15 minutes early to complete a new patient questionnaire and acquaint yourself with our office.

We believe everyone deserves a healthy smile they are proud of

Dr. Missy D'Souza

Dr. Mi Seong (Missy) D'Souza combines her clinical skills with a warm and gentle personality to put even the most apprehensive patient at ease. Dr. D'Souza 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. D'Souza grew up in Sudbury, Ontario. Dr. D'Souza has been practicing dentistry in Mississauga since 2006. She is a member of both the Canadian and Ontario Dental Associations.

Dr. D'Souza 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. D'Souza 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. D'Souza 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. D'Souza 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 baseball or even at St. Christopher's Catholic Church on Clarkson Road. She is a loving mom to 3 little boys including twins. Her husband Francis D'Souza grew up in Clarkson, is a former Citytv anchor and current Managing Editor of CBC's "The National".  Dr. D'Souza has visited local schools and taught hundreds of kindergarten and Grade 1 students about the importance of healthy teeth. Dr. D'Souza proudly supports 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 and is a member of St. Christopher's Caring and Sharing group. 

Dr. D'Souza 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 reach out personally to Dr. D'Souza 

Your Hygiene Team

A resident of Lorne Park who looks forward to meeting you

Ensuring healthy smiles for three decades 

Always providing patients with the latest hygiene techniques

Your Care Team

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

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

Always ensuring patient comfort while working alongside Dr. Missy

Introducing our newest team member working alongside Dr. Missy and at reception


Monday 7:30am - 5:30pm

Tuesday 7:30am - 5:30pm

Wednesday 7:30am - 8:00pm

Thursday 7:30am - 5:30pm

Friday 7:30am - 3:00pm

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.

Cancelations within 48 hours will be accepted for those who have COVID-19 symptoms AND a travel history within 14 days to a COVID-19 impact area. Please call the office to be screened prior to your scheduled visit.

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

We always welcome new patients. Contact us with questions, learn more about a treatment or book your appointment


Monday  7:30am - 5:30pm
Tuesday  7:30am - 5:30pm
Wednesday  7:30am - 8:00pm
Thursday  7:30am - 5:30pm
Friday  7:30am - 2:00pm


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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