Privacy Policy

1. Who We Are

This Privacy Policy applies to Greenfield Dental Clinic, operated through allon4vietnam.com. We are a dental clinic based in Hanoi, Vietnam, providing All-on-4 dental implant services primarily to international patients including those from Australia, the United Kingdom, Canada and New Zealand.

If you have any questions about this policy, contact us at: [email protected]

2. Information We Collect

Information you provide directly

• Full name
• Email address
• Phone number
• Dental condition details (from our assessment form)
• Preferred contact method
• Travel availability

Information collected automatically

• IP address and approximate location
• Browser type and device information
• Pages visited and time spent on site
• Referring website or advertisement
• Cookie identifiers (see Section 5)

3. How We Use Your Information

• To respond to your consultation request via your preferred contact method
• To assess your suitability for All-on-4 dental treatment
• To send you relevant information about our services
• To improve our website and marketing campaigns
• To measure the effectiveness of our advertising (Google Ads)
• To comply with legal obligations

We will never sell your personal information to third parties.

4. Legal Basis for Processing

We process your personal data on the following legal bases:

• Consent — for cookies and marketing tracking (you can withdraw at any time)
• Legitimate interest — to respond to your enquiry and provide our services
• Legal obligation — where required by applicable law

5. Cookies & Tracking Technologies

Our website uses cookies to improve your experience and measure advertising effectiveness. We use Google Consent Mode v2: for visitors in the European Economic Area, the United Kingdom and Switzerland, tracking cookies are only activated after you give your consent; elsewhere, measurement cookies are enabled by default and you can ask us to stop at any time.

We use Google and Meta measurement tools to understand which of our ads help patients find us. If you contact us, we may share an encrypted (hashed) version of your phone number or email and whether you booked a visit — never any treatment or health details. You can opt out at any time by telling us.

Cookies we use

• _ga, _ga_* — Google Analytics: identifies unique visitors and sessions (expires 2 years)
• _gcl_au — Google Ads: links ad clicks to conversions (expires 90 days)
• _gac_* — Google Ads: tracks which ad brought you to the site (expires 90 days)

Managing your cookie preferences

Visitors in the EEA, UK and Switzerland can accept or decline cookies using the banner displayed when they first visit our site; anyone can opt out of ads measurement by contacting us. You can also clear cookies at any time through your browser settings. Note that declining cookies will not affect your ability to use our site or submit a consultation request.

6. Third-Party Services

We use the following third-party services that may process your data:

• Google Tag Manager & Google Analytics — website analytics (Google Privacy Policy)
• Google Ads — advertising and conversion tracking
• Formspree — form submission backup processing
• WhatsApp (Meta) — if you choose to contact us via WhatsApp

7. Data Retention

We retain your personal information for as long as necessary to provide our services and comply with legal obligations:

• Consultation enquiry data: up to 3 years
• Patient treatment records: as required by Vietnamese medical law
• Analytics data: 26 months (Google Analytics default)

8. International Data Transfers

As a clinic based in Vietnam serving international patients, your data may be transferred to and processed in countries outside your home country including Vietnam and the United States (Google servers). We ensure appropriate safeguards are in place for all such transfers.

9. Your Rights

Depending on your country of residence, you may have the following rights:

• Access — request a copy of your personal data
• Correction — ask us to correct inaccurate data
• Deletion — request deletion of your data
• Objection — object to certain types of processing
• Portability — receive your data in a portable format
• Withdraw consent — for cookie-based tracking at any time

To exercise any of these rights, contact us at: [email protected]

10. Security

We implement appropriate technical and organisational measures to protect your personal information against unauthorised access, alteration, disclosure or destruction. All data transmitted through our website is encrypted using SSL/TLS.

11. Children's Privacy

Our services are not directed to individuals under the age of 18. We do not knowingly collect personal information from children. If you believe a child has provided us with personal information, please contact us immediately.

12. Changes to This Policy

We may update this Privacy Policy from time to time. We will notify you of significant changes by updating the "Last updated" date at the top of this page. We encourage you to review this policy periodically.

13. Contact Us

For any privacy-related questions or to exercise your rights, please contact:

• Email: [email protected]
• Address: 95 Trung Hoa, Yen Hoa Ward, Hanoi, Vietnam
• Phone: +84 906 621 988