An increase in the wages of dentists may or may not increase the number of dentists employed. Here are some reasons why an increase in wages may or may not lead to an increase in the number of dentists employed:
Why it might increase the number of dentists employed:
Firstly, an increase in wages may increase the demand for dentists' services. This, in turn, may cause the supply of dentists to extend as more people train to become dentists to meet the increased demand. This can lead to an increase in the number of dentists employed, particularly in areas where there is a shortage of dentists.
Secondly, higher wages may increase the standard of living of dentists, making it more attractive to pursue a career in dentistry. This may encourage more people to become dentists, thereby increasing the supply of dentists and the number of dentists employed.
Thirdly, higher wages may persuade current dentists not to leave the occupation or delay retirement. This can help to retain experienced dentists in the workforce, ensuring that there are enough dentists to meet the demand.
Lastly, an increase in wages may cause increased inward migration of qualified dentists. If the wages of dentists in one country are relatively low compared to other countries, then an increase in wages may attract dentists from other countries to work in the country where the wages have increased.
Why it might not increase the number of dentists employed:
Firstly, an increase in wages may decrease the supply of dentists if the training period is long and people are discouraged from pursuing a career in dentistry due to the costs and time required to become qualified. This may lead to a contraction in the demand for dentists in the long run.
Secondly, some people may lack the qualifications or skills required to become a dentist, which may limit the supply of dentists.
Thirdly, some people may not find the job of a dentist enjoyable, or they may think that it will be too physically demanding, which may limit the supply of dentists.
Fourthly, wages may rise more in other occupations, making it more attractive for people to pursue other careers instead of becoming a dentist.
Lastly, an increase in wages may increase costs for dental firms employing dentists or consumers, which may reduce the demand for dentists, leading to a decrease in the number of dentists employed.

In conclusion, while an increase in the wages of dentists may attract more people to the profession and retain experienced dentists in the workforce, it may also lead to increased costs, limiting the demand for dentists. Therefore, the impact of an increase in wages on the number of dentists employed depends on several factors, including the demand for dental services, the supply of dentists, the attractiveness of the profession, and the wages of dentists in other occupations.