About us. Canyon Oaks Dentistry is a small privately owned dental office nestled in the charming town of Alta Loma (North Rancho Cucamonga), CA. We focus on building long term relationships with our patients based on trust and exceeding expectations. We are a high quality, family oriented general dentistry office looking to add a registered dental assistant to our team. We provide a wide variety of dental services to our patients and offer a "no ...