Meet the team

At Portman Dental & Implant Clinic our highly skilled, friendly team shares the same single vision: we put you first. Together, we are dedicated to providing you with a first class experience, from the comfort of our reception to the very latest innovations in dental technology. We make sure you have the best possible care from the second you walk through the door.

Find out more about each of our practice team members below.

Gustavo Silva

Dental Practitioner
GDC No. 104605

Gustavo qualified in Portugal in 2004 and still travels to Lisbon on a regular basis to treat patients. He has taken further studies in both implantology and surgical periodontology in 2009 in Portugal and London and continues to work together with experts in the area of peri-implantititis and full mouth rehabilitation.

Dr Joanna Howden

Dental Practitioner
GDC No. 59851

Dr Jo Howden qualified from Guys Hospital in 1985. Over the last 25 years Jo has continued her passion to deliver excellence in general dentistry, including 3 years with Her Majesties Forces. She joined Boots in Piccadilly circus when it opened, transferring to Maidenhead when she started her family. Jo is passionate about giving the best care for her patients. Finding long lasting solutions for patients’ dental needs has meant a (loyal) dedicated following over the 20+ years she has been practising.

Jo has a wonderful calming and gentle nature that will put even the most nervous patients at ease. To compliment her dentistry in 2007 Jo started offering  facial aesthetics, including Botox, fillers and skin needling treatments, which following a principle of a natural look for her patients, continues to be a big success. With a son just in secondary school and a daughter in primary school much of her time is spent as taxi driver to various sporting events. Jo can be seen walking their dog around the countryside surrounding Henley. This summer Jo reached the final in her local regatta.

Kam Lee

Dental Practitioner
GDC No. 61083

Kam Lee qualified from Glasgow University in 1986 and for the last 30 years has continued to enjoy the variety that general dentistry brings to caring for the whole family. He feels privileged to have served families locally for the last 27 years and is described by his patients in independent surveys and testimonials as gentle, kind and caring. He was awarded Denplan Excel Accreditation in 2011 for his ongoing commitment to ensure his patients are receiving the highest standard of care and customer service.

In testament to the relationships he has built, patients travel far and wide to see him for their continuing dental care. Having previously enjoyed the adventures of scuba diving and bungee jumping from insane heights he is now content with the leisurely pursuits of cycling, gardening and cooking for friends and family.

Dr Amira Al- Ahmar

Dentist specialising in Prosthodontics
BDS MSC Clin Dent Prosthodontics
GDC No. 82093

Dr Amira Al-Ahmar is a registered Specialist Prosthodontist. She graduated from Bristol University (BDS) in 2003, and successfully gained a Masters in Clinical Dentistry in Prosthodontics from the UCL Eastman Dental Institute in 2012.

Since 2003, she carried out a number of training posts in hospital Restorative and Maxillofacial Surgery Units around the UK. During this time she was awarded Membership of the Faculty of Dental Surgery. After 3 years in general dental practice, she commenced specialist training in prosthodontics at the Eastman Dental Institute and Hospital, where she carried out extensive full mouth rehabilitations on teeth and implants.

Amira gained the Membership in Restorative Dentistry, Royal College of Surgeons of England, in 2014. This led to her being placed on the GDC Specialist List in Prosthodontics.

Throughout her career, Amira presented her research in both UK and international conferences. Previously, she taught undergraduate students at Bristol Dental School, and now continues to teach  post-graduate dentists at the Eastman Dental Institute and Hospital. She is a clinical trainer in the field of prosthodontics, as part of the Oxford Deanery.

Amira provides a full range of prosthodontics treatment including fixed, removable, and implant prosthodontics. She takes great interest in her patients, adopting a holistic approach in the provision of care and restoration of smiles, function and comfort.

Outside work, she enjoys travelling, swimming, and socialising.

Keshari Leelasena

Dentist specialising in Endodontics 
MSc Lond 1998, BDS Lond 1993
GDC No. 69692

Keshari qualified BDS with Distinction from Kings College, London in 1993. After completing one years vocational training, then two years as a Senior House Officer in Restorative Dentistry followed by Maxillofacial Surgery, she enrolled into a two-year Masters Degree course in Endodontics at the Eastman Dental Hospital, London. Keshari passed her Msc in Endodontics with Distinction in 1998. She has focused her practice to Endodontics since 1997 and gained entry onto the Specialist List for Endodontics in 2001.

Keshari has worked as a referral Endodontist since 1997 for several NHS Trusts and also established two private endodontic referral practices. She receives referrals from General Practice, Community and Hospital Services. Keshari is also a member of the Langham and British Endodontic Societies and was on the database of Expert Witnesses for the Dental Defence Union between 2005 and 2010.

Endodontics deals with the management of infection from the dental pulp or in layman’s terms root canal treatment. With modern technology, knowledge of the latest treatment principles and a high level of patient care, Keshari routinely achieves excellent clinical results for her patients.

Sarjoo Mistry

Dentist specialising in Endodontics 
MClinDent (Endo) MRD RCS(Eng)
GDC No. 103898

Sarjoo graduated from King's College London in 2006 and then undertook his vocational training in Norfolk. Following this, he working for 4 years as an associate dentist in practices in Norfolk and Surry. Sarjoo then started a 4 year speciality training programme in Endodontics at The Eastman Dental Institute. During this time he gained his MClinDent and MRD qualifications, which allowed him to enter the specialist list in Endodontics. Sarjoo now devotes his time fully to the endodontic field, which primarily involves solving diagnostic dilemmas, dental trauma management, root canal treatment and surgical apisectomy procedures. He now divides his time between treating patients in practice and teaching the future endodontists at the Eastman Dental Hospital.

Dr Georgios Dimakis

Dental Practitioner
Med Dent Cert Dip Periodontology 
GDC No. 226434

Further to his periodontal qualifications George attained a certificate degree in Oral Biology and undertook extensive training in the use of dental implants and reconstructive surgery. This included studying in the Branemark clinic with surgical instructors Prof. Lars Sennerby  , Prof Ulf Lekholm  and prosthetic reconstruction instructor Prof. Torsten Jemt, and at SPA clinic in the use of the Astra and Straumman implant systems with instructors Prof. Lindhe, Prof. Wennstrom and Prof. Berglundh.  His implant experience extends to being clinical implant advisor in Greece and Cyprus for Xive Densply Implants and TBR.

His extensive practical experience extends to 12 years of clinical dentistry in his two private specialist clinics in Athens. George enjoys applying periodontal and implant facets with different dental specialisms including prosthodontic, oral surgery, endodontic and orthodontic treatment.

Tania Rafael Garcia

Dental Practitioner
Qualifications: DDS, MSc (Periodontology)
GDC No. 118959

Tania Rafael Garcia is our new addition to the Portman Dental Clinic and will be working alongside our periodontist George Dimakis.

Tania qualified in the prestigious Egas Moniz Institute in Lisbon in 2007 having simultaneously completed one year training in Madrid at the Universidade PIO X where she was awarded distinctions and awards on the clinical disciplines including paediatric and geriatric special care. She returned to Lisbon and started her Master of Science degree in Periodontology which she was awarded in 2009. Tania spent a lot of time in private practice but also devoted her time to her hometown hospital where she modernized the stomatology department and worked alongside with experienced surgeons. Tania moved to the UK and completed both a modular surgical Periodontology degree and an implant residency.

Tania dedicates her time to the exclusive practice of Periodontology and is a strong believer that this disease can be controlled if all the factors are studied and treated accordingly. She has presented extensively in centres of excellence and will work alongside our team of hygienists and resident periodontist to achieve long lasting stability for periodontal patients.

She is a passionate mother of one and enjoys returning to Portugal and divides her time between the mountain and the beach and she regularly visits her old university where the academic music group (Tuna) that she helped grow during her study years still performs. She is also a keen musician.

Amina Abdel-Karim

Dentist specialising in Orthodontics 
GDC No. 83881

I graduated from Bristol Dental School in 2004. Afterwards I held various posts in hospital, where I gained experience in Oral and Maxillofacial surgery, Special needs and Children’s Dentistry. I became a specialist Orthodontist after completing a three years Masters in Orthodontics at Kings College Hospital and the Royal Surrey County Hospital. I then undertook a further 2 years training, at Guy’s & St. Thomas’ and Royal Alexandra Children’s hospital in Brighton, to become a consultant. In addition to working in private practice, I also work as an NHS consultant in orthodontic in East Surrey Hospital.

I have always enjoyed working with children and supporting them and their families through treatment, which is way I choose Orthodontics as a speciality. I have vast experience treating nervous and anxious children, and also different types of braces.  I think it is very important to focus on what the patient hopes to achieve with braces. Apart from making sure that you are pleased with your smile when the braces ‘come off’, I strive to ensure that my patients’ journey through treatment is as comfortable as possible.

Jackie Bridge

CEB Dip Dent Hygiene 1997
GDC No. 5244

Jackie Bridge qualified from Eastmann in 1997 and has been in private practice since qualifying. Jackie has been with Portman Healthcare at both Maidenhead and Henley since 2007 and particularly enjoys working with nervous patients.

She is married with two daughters and in her spare time enjoys baking and cake decorating.

Sophie Manners

Dip Dent Hygiene Lpool 2016
Diploma in Therapy Lpool 2016
GDC No. 206332

Sophie joined our hygiene team in early 2017; she completed her hygiene qualification in December 2016 in Liverpool. Up until 2014, Sophie was our Head Dental Nurse at our Henley practice, Courtrai House. We could not be happier to welcome her back into the Portman Family, we are so proud of Sophie's achievements and we are thrilled to have been part of Sophie's development.

Zoe Hammerton-Hirlihy

Practice Manager
Level 5 Diploma Business Management and Leadership 2017

Zoe has been working in dentistry for 18 years and joined the practice in 2013 as dual site manager also looking after our Henley practice. Since returning from maternity leave in January 2016, Zoe has been allowed to concentrate on Portman Dental Clinic and stay in our Maidenhead practice on a full time basis. Zoe has worked as a practice manager since 2006 and also working as a regional manager. Zoe enjoys all aspects of dental practice management and strives for the perfect patient experience. In her spare time, Zoe enjoys spending time with her three children and husband and exploring the South West coast.

Lauren Williams


Lauren joined Portman Dental Clinic in November 2016; however she is not new to the dental industry having worked in other practices in the past and after a few years, has found her way back to the dental industry. Lauren enjoys being the first point of contact for the patients and making sure they have the best experience whilst they are attending our practice. Outside of work Lauren likes to visit new places and spend time with friends and family.

Kayla Greenberg

Treatment Co-Ordinator
Qual- National Certificate NEBDN 2010

Kayla qualified as a dental nurse in 2011 and joined Portman Dental Clinic in 2014. Kayla gained a lot of experience in all aspects of dentistry as a locum nurse prior to joining us, working with all types of dentists across Berkshire, Buckinghamshire and Surrey, making Kayla an ideal nurse for multi-disciplinary team as she is adaptable in all situations. Kayla has stepped into our Treatment Co-ordinator role as she is passionate about delivering outstanding patient care and wanted to pass on her knowledge of specialist dentistry to our patients with a caring, transparent approach.

Hayley Bint

Head Dental Nurse
Verified experience in Dental Nursing

Hayley has been a dental nurse for 17 years and joined Portman Dental Clinic in 2016. Her favourite areas of dentistry include working alongside the specialists and open surgery. She is bright and cheerful and makes people smile. Outside of work Hayley enjoys spending time with her family and socialising with her friends.

Emily Attard

Dental Nurse
NVQ L3 Dental Nursing 
VRQ L3 Dental Nursing City & Guilds 2012

Emily has worked at Portman Dental Clinic since 2017 and works in partnership with Mr K Lee. Emily enjoys meeting and building new relationships with patients and has enjoyed the exposure to some of the more specialist services within the practice. Emily hopes to develop her specialist nursing skills within the next few years. Outside of work, Emily enjoys spending time with family and friends.

Louise Bennett


Louise started her first dental receptionist role in 2007, she thoroughly enjoyed the role and worked up to Head Receptionist. Louise took a break from this employment after having her second child in 2011, but returned as a Dental Receptionist for Portman in 2013 at their Henley Branch. Louise re-joined Portman in 2017 after taking a break to concentrate on a family business. When Louise is not at work, she enjoys spending time with her 2 daughters, family gatherings in Dorset and long walks with her Sausage Dog.

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Portman Dental Care Awards

Dental Industry Award - Portman Dental Care
Private Dentistry Awards - Portman Dental Care
The Dentistry Awards - Portman Dental Care
BDA Good Practice Award - Portman Dental Care
Elite Practice Award - Portman Dental Care