General and cosmetic dentistry

Feel at home in the dentist's chair

“My aim is to make every patient feel at ease and confident in their care. I love building genuine connections, sharing laughs, and creating positive dental experiences.”

Dr Theeps

About Dr Theeps

Treatments

General dentistry

Check-ups, hygiene, fillings and everyday care to keep your teeth and gums healthy, with everything explained along the way.

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Invisalign

Clear aligners to straighten teeth without fixed braces. You'll see a digital preview of your result before you decide.

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Composite bonding

Tooth-coloured resin to repair chips, close small gaps and even out edges, usually without drilling healthy tooth.

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Teeth whitening

Custom-fitted trays and professional gel you use at home, with check-ins so your teeth stay comfortable.

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Veneers

Thin, custom-made porcelain shells to improve the shape, size and colour of your teeth.

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Reviews

What patients say

“She's incredibly thorough which made me feel really safe and looked after throughout.”

“I've been seeing Dr Theepthy Kantharuban for Invisalign and other treatment and I honestly couldn't have asked for a better experience. She's incredibly thorough which made me feel really safe and looked after throughout.

She explains all the options clearly and never pushes you into treatments you don't want. When I wanted a few tweaks, she was completely open to it and genuinely wanted me to be happy with the final result.

I had a couple of unexpected issues along the way, and Dr Theepthy was so patient, calm, and professional. She always made sure everything was sorted properly and that I felt supported at every stage.

My treatment ended up being a: straightening, whitening, and then a new veneer to match the final shade. It took time, but she was brilliant throughout, and I always felt I could contact her if I needed anything.

I'm really happy with the results. Everything looks exactly how I hoped, and the whole process felt thoughtful and well cared for. I'd highly recommend Dr Theeps.”

G.C. · Google review · 2025

“I'm absolutely thrilled with my new smile!”

“I've just finished Invisalign treatment with Dr Theeps who has been brilliant from start to finish. She's incredibly thorough, compassionate and takes the time every appointment to ensure I fully understood next steps and had plenty of opportunities to ask any questions. I'm absolutely thrilled with my new smile! If you're thinking about getting Invisalign at Diamond Smile, I'd thoroughly recommend them and Dr Theeps.”

J.B.Google review · 2026

“…took the time to explain every detail clearly, and was always responsive and attentive to my questions.”

“I just completed my Invisalign treatment and I am really happy with the end result! My dentist, Dr. Theeps, is brilliant. She was very thorough in her process, took the time to explain every detail clearly, and was always responsive and attentive to my questions. I would highly recommend Dr. Theeps.”

D.H.Google review · 2026

“She constantly made sure I was comfortable during appointments and she always tailored her approach based on my wishes.”

“I had Invisalign and composite bonding done by Dr Theeps Kantharuban. Overall, my experience with her was amazing! She's incredibly friendly and professional. She constantly made sure I was comfortable during appointments and she always tailored her approach based on my wishes. She completely transformed my smile in little over a year and I couldn't be more pleased with the results. My teeth look so naturally straight! People hardly guess I had Invisalign and composite bonding! I 100% recommend to choose Dr Theeps for Invisalign and composite.”

V.W.Google review · 2026

Read all reviews

Feel at home in the dentist's chair

General dentistry

Invisalign

Composite bonding

Teeth whitening

Veneers

What patients say

Dr Theeps can be seen at:

Crystal Palace

Purley