Diefenbacher Donovan Sieber
Creating Beautiful Smiles

Meet the Team

Our exceptional, friendly team is our greatest asset. Our dental assistants and hygienists are licensed professionals who pride themselves on staying on the cutting edge of dentistry and patient communication. We are excited about what we are doing, have high standards of quality and integrity, and are motivated to achieve the best results for our family of patients. 

We are dedicated and motivated with one primary goal—your utmost comfort! We feel it’s important that you understand the treatment that you’ll be receiving so that you can relax during the procedure.

We are eager to answer any questions regarding your dental care. Please feel free to share with us your needs and concerns.



Heidi L.

  • Graduated from University of Waterloo - Bachelor of Science Degree
  • Graduated from Niagara College Dental Hygiene Program in 2003

Heidi has been working as a Dental Hygienist since 2003, following her graduation from Niagara College of Applied Arts and Technology. Prior to her dental hygiene education she obtained her Bachelor of Science degree from the University of Waterloo. Heidi likes getting to know each patient on a personal level, and strives to ensure a positive dental experience. When not at work she loves spending time with her family and friends, reading, staying active, patio season :) and loves all things outdoors!



Elaine K.

Elaine has worked in the Dental industry as a front desk receptionist for over 25 years, and with Diefenbacher Sieber Dental since 2009. She enjoys baking, and the staff love her delicious sticky buns! Elaine loves spending time through the summer at her trailer near Wasaga Beach with her husband. Elaine has three beautiful daughters, two of which are married, with three grandchildren!


Sarah H.

  • Graduated with honours from George Brown College Restorative Dental Hygiene Program in 2011
  • Graduated from Fanshawe College Dental Hygiene Program in 1999
  • Graduated from Fanshawe College Dental Assisting Program in 1997

Sarah has been working with Dr. Diefenbacher since September 2000. Sarah has over 15 years experience in providing both dental hygiene and orthodontic (braces) services for her clients. This progressive setting allows her to care for the health of her clients teeth and gums while utilizing her orthodontic and restorative dental hygiene training to improve esthetics and provide a beautiful and healthy natural looking smile. Sarah shows a strong commitment to continuing education and is constantly updating her skills to provide the most current evidence based recommended therapies available. In her spare time she enjoys running, hot yoga and spending time with her husband and 2 adorable children.


Brenda K.

  • Graduated from the Niagara College's Dental Assisting Program in 1989
  • Recipient of the Health Sciences Faculty Award an the Niagara Peninsula Dental Association Scholarship
  • Graduated from Fanshawe College's Dental Hygiene program in 1992
  • Recipient of the London and District Dental Society Award
  • Member of the Canadian Dental Hygienists' Association
  • Member of the Ontario  Dental Hygienists' Association
  • Member of the Waterloo- Wellington Dental Hygienists' Society 

Brenda began her career in the field of dentistry over 20 years ago. For the first 2 years her roles consisted of Dental Assistant, Dental receptionist, and Office Coordinator. She then returned to college to continue to pursue her goal of becoming a Registered Dental Hygienist. She has been working for Dr. Diefenbacher since 2001. Brenda regularly participates in continuing education courses and workshops to stay abreast of new therapy techniques, research and products. She enjoys a number of sports and outdoor activities, and spending time with her family.




Sarah H.

  • George Brown College for Dental Assisting 2006- 2007
  • HARP Certified
  • Graduated Medix School Level II Dental Assisting
  • volunteered in Guatemala with Health Outreach 2012 and 2013
  • Waterloo Wellington Dental Society Executive Secretary  

Sarah grew up in New Dundee and currently lives in New Hamburg with her husband and chocolate lab Reese. She has been a patient of Dr. Diefenbacher's all of her life, including doing her Grade 12 co-op here. She has worked with Dr. Diefenbacher since June of 2007. Sarah has traveled to Guatemala with Health Outreach 3 times in the past 6 years with both Dr. Sieber, Dr. Diefenbacher and most recently with her husband, where they provided dental care to the local children.  Sarah loves the outdoors, enjoys road cycling and volleyball, shopping, traveling, time at the Cottage, and long walks with Reese.


Jill D.

  • Graduated from the Dental Assisting Level I and Level II George Brown College in 1999
  • Graduated from the Dental Hygiene Program George Brown College in 2001
  • Certified Laser Assisted Periodontal Therapist

Jill worked in Waterloo Region for a couple of years before moving to Europe. She worked in The Netherlands for 2 years at a dental hygiene clinic that specialized in laser therapy for periodontal patients with severe dental anxiety. Jill started working for Dr. Diefenbacher when she returned to Canada in 2005. When Jill is not working she enjoys spending time with her two handsome boys and watching Coronation Street- don't ask why!



Aneta M.

  • Graduated Career Canada CDA Level I 1991
  • HARP Certified
  • Graduated Medix College CDA Level II 2012

Aneta has been assisting with Dr. Sieber since 2002. She is a true soccer mom and loves cheering on her son. She also enjoys traveling, walking and listening to music.




Katie J.

  • Graduated from Medix Institute for Level II Dental Assisting in 2004
  • Graduated from The Canadian College of Dental Health as a Dental Hygienist in 2007

Katie was born and raised in Kitchener and has been practicing hygiene in the region since 2007. She has enjoyed working with Dr. Diefenbacher since December of 2008. Katie continues to participate in continuing education programs and seminars to remain current in the field of dental hygiene. In her free time she enjoys sports and working out, a variety of music and concerts. She loves spending time with her husband and two beautiful children.

  Allison P.


Call for an appointment and experience the difference today!


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