It is a crowded field in California with 7 dental schools. The only other state to come close is New York with 5 schools. In California, there are 2 public schools (UCLA and UCSF) and 5 private schools (UPacific, USC, Loma Linda, Western, and California Northstate).
UCLA and UCSF are 2 of the top public dental schools in the nation. They are able to attract top candidates (high DAT scores/GPA averages). UCLA and USCF offer very affordable tuition/fees to in-state students, about $290K. This is significantly lower than the alternative of attending a private school.
University of Pacific has also been able to attract top level applicants despite its status as private. University of Pacific is the only 3-year dental school in the US. To many candidates, this makes it highly desirable. Finish dental school and enter the workforce 1 year earlier. The tuition/fees for U Pacific is on the higher side for private schools, $423K. The evidence shows that candidates are willing to pay this steep price to get their degree in 3 years.