Rosa californica, commonly known as California wild rose, has a history of traditional use among Native American tribes and herbalists, including for oral health and the support of gums. Ethnobotanical records indicate that some indigenous groups used decoctions or infusions of rose roots or leaves as a mouthwash or rinse for treating sore gums, mouth ulcers, and minor oral irritations. The astringent properties of rose species, attributed mainly to their tannin content, are thought to help tighten and tone mucous membranes, potentially reducing inflammation or discomfort in the gums. These effects align with the broader traditional use of various Rosa species in folk medicine for oral and throat ailments.

Despite this historical use, there is minimal direct clinical or scientific research specifically validating Rosa californica for gum health. Most available evidence is anecdotal or based on extrapolation from related rose species, such as Rosa canina or Rosa damascena, which have been studied more extensively for their antioxidant and anti-inflammatory properties. There are no robust human trials or pharmacological studies directly linking Rosa californica to improvements in gum health. Therefore, while traditional use exists, scientific validation is lacking, and evidence for efficacy is limited.