While there are many ways to think about production in a dental or medical practice, one way I find insightful involves the following loose decomposition:
Production = Number of Patients Examined X Production Per Exam
where the latter factor includes production associated with the exam itself and any treatment that follows from the exam.
Different dental practices serve different market segments and accordingly optimize their strategy toward the above factors differently. Think spa dentist vs. medicaid dentist or single dentist practice vs. group practice or busy practice vs. not-so-busy practice.