Meet Our Team




Dr Dawie De Villiers: Dentist IMG_0133_Facetune_21-08-2019-22-42-15.jpeg

Dr Dawie de Villiers graduated from the University of Stellenbosch in 1989 which gives him over 30 years experience in the dental industry.

He has completed numerous post-graduate certificates and diplomas. He has a special interest in Reconstructive Aesthetic & Cosmetic dentistry. 

He is passionate about his patients & people in general and continuously build lifelong connections wherever he goes. He runs a practice that is friendly, professional and on the leading edge of technological advances in the dental industry.

When Dr De Villiers is not practicing dentistry, he keeps himself busy with entrepreneurial opportunities and creating new ways to enhance the lives of the people around him.  He is the complete family man and loves his home and music! 

Dr Heinrich Dippenaar: Dentist IMG_0006_Facetune_21-08-2019-15-04-20.jpeg

Dr Heinrich Dippenaar has a special interest in Endodontics (root canal therapy). He is at Dental ON Gray in Knysna as well as at our Plett practice, Dental ON Gibb.

Dr Dippenaar lectures nationally as well as internationally.  He completed his dentistry degree in 2002 through Stellenbosch University and his Post-Graduate diploma in Endodontics (Root Canals) thereafter.  His fields of interest are: complex Root Canal treatments; Aesthetic Dentistry and to see those beautiful before and afters with Digital Smile Design Dentistry.

With his passion for the dental industry and technological innovation, he aims to change the ideas behind “going to the dentist” for the better and to make your visit to him, as pleasant as possible.

Dr Daniël Rossouw: Dentist fullsizeoutput_79

Dr Rossouw graduated from the University of Pretoria with a Bachelor of Dental Surgery where he received awards for top student in Endodontics (root canals); Removable Prosthetics and Periodontics. He then broadened his scope by completing a post-graduate certificate in Oral Implantology.

Daniël is passionate about all disciplines of dentistry but has a ‘special interest’ in paediatric and geriatric patients. Daniël has also mastered the Nitrous Oxide method of sedation which will make your child’s visit to the dentist a much better experience. Read more about Nitrous Oxide in our “Sedation” section.

He is a perfectionist of note and finds satisfaction in helping other people where he can. His hobbies include travelling, photography and playing the saxophone.

Esmé Wallace: Oral HygienistEsme Wallace.jpeg

Esmé is an experienced Oral Hygienist and has more than 27 year experience in her field. Her motto is “prevention is better than cure” and considers this the key to oral health and oral hygiene. Prosthodontics, Periodontics and Orthodontics are all important disciplines when dealing with oral hygiene challenges. 

Esmé is very passionate about what she does and will leave you with the best tips and tricks to take care of your Oral Hygiene at home, where it is most important. Demonstration of the correct ways of brushing, flossing, tongue scraping and correct dietary advice, is necessary to all our patients. 

We advise at least a twice a year thorough Oral Hygienist cleaning to all our patients. 

Kathryn Talken: Oral HygienistIMG_0298_Facetune_25-08-2019-19-02-39.jpeg

Katherine has been practicing Oral Hygiene for 12 years. She enjoys interacting with her patients and always treat them in a friendly and comfortable manner. She believes the more gentle she is, the less pain and the more likely a patient will look forward to their next oral hygiene visit. Katherine is very compassionate and a great asset to our team!

Yolanda Rosslee: Practice Managerfullsizeoutput_108

Yolanda has been with Dental ON Gray since 2012 and her role has constantly evolved and matured during her time at the practice. Her dedication, loyalty and competency in all that she does, make her an impeccable practice manager, ensuring that everything runs smoothly from day to day. 

She manages, maintains and oversees all administrative duties. Her ability to handle multiple tasks at once makes her an irreplaceable asset to our team. She is organised, professional and focused and has a wonderful way with people.

Debbie Oosthuizen: Front Office ManagerIMG_0127_Facetune_21-08-2019-22-31-49.jpeg

Debbie has been in the Dental Industry since 1993. Patients ask for her by name! 

She always welcomes you with a friendly face and her many years of experience in a Dental Surgery have made her one of the most knowledgeable members in our team. She is an all-round employee and is able to fill most roles here at the practice. Debbie can always be counted on when needed with a positive attitude.

Irene Leah Willemse: Receptionist


Irene will be the first BIG smile you see when entering the practice. She is very intelligent and efficient; hands-on and always friendly! She handles all of the appointments and some of the administration.

Edwina Stevens: Dental Assistant for Dr De VilliersIMG_0123_Facetune_21-08-2019-22-15-09.jpeg

Edwina is Dr De Villiers’ assistant and has been at Dental ON Gray for more than 8 years giving her the well deserved title as the head Dental Assistant. 

She takes pride in ensuring all our surgeries are fully equipped and stocked with the necessary supplies needed to keep the practice running smoothly. She is always willing to teach and mentor her fellow dental assistants. 
She is kind, reliable and highly competent & skilled in her field. 

Ilze Dippenaar: Dental Assistant for Dr DippenaarQQPHE8333.jpg

Ilze has over 27 years of experience as a Dental Assistant which makes her a great asset to Dr Dippenaar and the rest of the Dental ON team. She loves children and her smile and bubbly personality brings a calming effect to all children and patients.

She loves what she does because of the rewarding factor that a new crown brings to a patient’s confidence and smile and to see how their faces light up when they see the ‘after’ picture in the practice mirror. 

Anchin April: Dental Assistant for Dr RossouwARUYE1117.jpg

Anchen brings an atmosphere to our practice that we love! She is very sweet with our patients and always eager to help out where she can. In her off days, Anchen loves to spend time with her family and friends around a braai.

Yvette De Villiers: Practice Co-ordinatorIMG_0159_Facetune_21-08-2019-23-38-24.jpeg

Yvette is a qualified Midwife and Mental Health nurse and has acquired years of experience in Intensive Care and Oncology at Tygerberg Hospital. 
She is very passionate about the practice and is continuously seeking ways to better and improve our systems, look and ambience at Dental ON Gray and Dental ON Gibb.

Cynthia Show: Specialist Cleanerfullsizeoutput_10c

Cynthia is responsible for keeping our surgery in a pristine condition!
You will never find her without a smile on her face. She is very committed and has a ‘can-do’ attitude. 


Dr Luzaan Van Zyl: Visiting Orthodontic Dentist

Dr Luzaan Van Zyl did her BChD at the University of the Western Cape and has been at Dental on Gray since March 2016.

She has a keen interest in Orthodontics and has furthered her studies in the field by completing her Postgraduate Diplomas in interceptive in from the University of the Western Cape and progressive Orthodontics through the Mcgann Postgraduate School of Dentistry. Her patience and kind nature make her excellent with children!

Dr Johnny De Lange: Visiting Dentist 

Dr Johnny de Lange [BChD- Cum Laude; PG Dip Oral Surgery- Cum Laude] completed dentistry at the University of Pretoria in 2012 and his diploma in Oral Surgery in 2013. He took his FCMOS(SA) Primary examinations at CMSA in 2013. He finished his 18 month postgraduate Diploma in Oral Implantology as well as his diploma in oral health with CMSA.

His ambition is to become a specialist in maxillofacial surgery and therefore is currently a fourth year student in general medicine at the University of Pretoria. Dr de Lange visits Dental on Gray regularly to perform routine surgical procedures under local anaesthetic  or under conscious sedation at the Knysna Advanced Surgical Day Clinic.

Dental On Gray

15 Gray Street, Knysna, Western Cape, South Africa
Tel: (044) 382 1535  e-mail:


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