# Who can consent for dental treatment when an adult patient lacks capacity in California?

> Look for the lawful surrogate path, not family convenience. California cares who has legal authority, and the emergency exception is narrow.

Last verified: 2026-06-10
Reviewed by: Mahtab Mansour, DDS on 2026-04-25 (re-verification in progress)

## Direct answer
- Recorded surrogates, agents under advance directives or powers of attorney, conservators, and other lawful surrogate paths matter more than who is standing nearby.
- Spouse status alone is not the same thing as legal authority.
- Use the emergency exception only when the patient lacks capacity, delay would materially increase serious harm, and no lawful surrogate is reasonably available.

## Common trap
- Do not let a convenient family member substitute for a legally authorized decision-maker unless the facts establish the proper surrogate lane.

## Full guide
- [How do California consent rules work for minors and patients with impaired capacity?](https://dentovio.com/guide/california-dentistry-law-ethics-exam/consent-minors-impaired-patients/index.html.md): Use this guide when you need the California consent framework for minors, surrogate decision-makers, and informed-consent duty.

## Focused answer page
- [Focused answer](https://dentovio.com/answers/glossary-who-can-consent-for-impaired-adult-dental-care/index.html.md): Short, source-bounded answer page for search and AI citation.
- [California law and ethics glossary answer topic](https://dentovio.com/answers/topic/california-law-ethics-glossary/index.html.md)

## Primary sources
- `A52` Probate Code sections 4683, 4711, and 4712 plus AB 2338 surrogate decisionmaker framework for adults lacking capacity. <https://leginfo.legislature.ca.gov/>
- `A49` Cobbs v. Grant (1972) California informed-consent material-risk and reasonable-patient framework. <https://scocal.stanford.edu/opinion/cobbs-v-grant-30236>
- `A50` Truman v. Thomas (1980) duty to disclose material risks of refusing recommended testing or treatment. <https://scocal.stanford.edu/opinion/truman-v-thomas-30565>

## Next step
- [Take the free diagnostic](https://dentovio.com/free-practice-test)
- [See the paid California prep overview](https://dentovio.com/products/california-dental-law-ethics/index.html.md)

## Related glossary pages
- [Who can consent for a minor's dental treatment in California?](https://dentovio.com/guide/california-dentistry-law-ethics-exam/glossary/who-can-consent-for-minor-dental-care/index.html.md)
- [What changed in California dental sedation and anesthesia permits in 2025?](https://dentovio.com/guide/california-dentistry-law-ethics-exam/glossary/what-changed-in-sedation-permits-2025/index.html.md)