Question

# A dental practice has two primary types of patients. Patients needing fillings and patients needing tooth...

 A dental practice has two primary types of patients. Patients needing fillings and patients needing tooth cleaning. The data for each resource pool is given below.   Assume the patient mix is: 40% x-ray \$ 60% whiting You can complete the table below to do the calculations for the product mix in the following questions. Theoretical Unit Unit Unit Load Capacity Number Theoretical Load Load 40/60 Resource Unit Units in Capacity of Resource (min/patient) (min/patient) Mix (Patient / Load Resource Resource Pool Pool (p) Cleaning Filling (min/patient) minute) Batch Pool (cp) (patient/minute) Clerk Administrator 20 35 1 2 Dental Hygienist 58 0 1 2 Dental Technician 0 40 1 1 Dentist 5 25 1 1

a. In the scenario above, what is the bottleneck resource for the specified product mix, (40%, 60%) for this office?

 In the scenario above, if the average patient flow is 2 patients an hour, what is the utilization of the dentist for this product mix?

 Unit Unit Unit Load Theoretical Number Theoretical Load Load 40/60 Capacity Units in Capacity of Resource (min/patient) (min/patient) Mix Resource Unit Load Resource Resource Pool Pool (p) Cleaning Filling (min/patient) (Patient /minute) Batch Pool (cp) (patient/minute) Clerk Administrator 20 35 29.0 0.034 1 2 0.069 Dental Hygienist 58 0 23.2 0.043 1 2 0.086 Dental Technician 0 40 24.0 0.042 1 1 0.042 Dentist 5 25 17.0 0.059 1 1 0.059

Calculations

(a)

Note that the capacity of the Dental Technician pool is the lowest and hence this is the bottleneck resource.

(b)

Flow rate is 2 patients per hr. = 0.0333 patients per minute

So, utilization of the dentists = 0.033 / 0.059 = 56.67%

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