DENT5875C Construct Acrylic Dentures and Appliances Case Study - Medical Science Assignment Help

Assignment Task

Task

Questions:

WHS & Infection control

1.When working with acrylics in the dental laboratory making dentures, what are the particular hazards you would encounter and what are the standard safety precautions that you should be taking, the PPE you should be using and how you minimise hazardous manual tasks?

2. Dental acrylic liquids and acrylic powders have a number of particular properties that should be considered when being stored and when being used.Name these properties, and why they are a concern for its storage and how it should be stored properly.

3. How would you decontaminate a completed denture and ready for dispatch?

4. List the four (4) functions of anterior teeth.

5. Name 5 oral structures of the oral cavity.

6. Using the Universal tooth numbering system, clearly label and name the tooth groups in the tooth chart below.

7. Dental acrylic resins are usually made of two compounds.What are these two compounds called and what is their major component.

8. What is the chemical reaction/bonding that occurs when these two compounds are combined?  Describe the reactions and show in drawings of the atomic structures before and after the chemical reaction.

9. There are a number of different compounds that are added to dental acrylic resins that will affect the properties.For the list of additives below give each its classification, what it does and when you would use it.

10.  What is activation, what occurs at the chemical level and what will enable activation to occur.

Activation -

What occurs -

What enables activation -

11. Acrylic denture base materials are classified into different groups according to their method of curing.Name two classifications and give a description of each method.

12. Below is a list of polymerisation processes, what is occurring in each one.  Use a diagram to assist in the explanation.

13. Name eight (8) desirable properties that dental acrylic resins should have.

14. Why is the bond strength at the resin – metal interface of a prosthesis essential and how is this achieved.

15. For each of the items below give one or two acrylic plastics (as indicated by the table below) that you would use to make the item out of give its composition, properties and how it is manipulated and processed.
Item Acrylic and composition Properties Manipulation and processing.

Soft Liners:    

Denture bases:

Modified acrylic bases:    

Custom trays:    

Acrylic teeth:    

Modified acrylic teeth:    

16. The monomer liquid can contain chemicals that act as “cross-linking agents”.On a molecular level, how do these chemicals act?  Name three properties that these agents can produce in acrylic resins.

17. Copolymers can be added to acrylic liquid to modify the properties of the acrylic resins produced.  Name two properties that can be achieved by the addition of these copolymer materials.

18. “Self-cure” acrylic powder differs from “Heat-cure” acrylic powder.  

(a) There is a physical difference in the “self-cure” powder that allows technicians to use the mixed powder and liquid in a specific way.  Name the physical difference between these two powders.

(b) What technique can be used with “self-cure” acrylic that cannot be achieved with “heat-cure” acrylic?

(c) The method in (b) above assists technicians when constructing a particular type of dental prosthesis.What cases can benefit from this technique?

19. What is the main function of the post dam on a maxillary denture?

20. What type of articulators are best suited to set up a F/F denture? Why are these articulators better than alternative types?

21. Describe the purpose of a face bow.

22. Apart from a face bow reading for registering, name 2 other types of recording techniques for taking a registration used and what does it transfer.        

23. What is the ‘line of pound’. Why is it an important landmark when setting up teeth?Use a labelled diagram in your answer identifying the line of pound.

24. The ideal denture set-up includes placement of the teeth in the “neutral zone”. Describe what the “neutral zone” is. What are the advantages of tooth placement in the ‘neutral zone’?Include a diagram

25. When setting teeth for a try in, why is it important to follow the labial contours of a registration rim that has been modified by the clinician?

26. After setting each tooth for a try-in there is a part of the articulator that must be checked.What is this part and why is it important to check? Use a labelled diagram in your answer.

27. Describe the long axis angle, inclination, positioning and relationship to the occlusal plane of the maxillary central when setting up for trial insertion. Use a labelled diagram in your answer.
28. Why is the correct positioning of the upper canine important to a set-up?

29. What are the names of the two artificial curves which make up the compensating curve?Provide a fully labelled diagram for each of the two curves

30. Describe the long axis angle, inclination, positioning and relationship to the occlusal plane of the maxillary first molar when setting up for trial insertion. Use a labelled diagram in your answer
31. Describe what the definition of anterior ‘overjet’ and ‘overbite’ is and in your answer include a diagram and what the normal range of OB/OJ is. 
32. Why is interdigitation important in the construction of complete dentures?

33. Why is it important to ensure there is buccal overjet when setting the posterior teeth?

34.

(a) What is “Balanced Occlusion”

(b) Why is it important with regard to F/F dentures?

(c) Use a labelled, cross section diagram of the posterior area (F/F dentures) to show Balanced Occlusion.

(d) Discuss what is happening on both sides of the dentures.

35. When waxing up the denture after setting the teeth there are five factors that are important to include in the design. Name them and in your answer include a brief explanation of each

36. What procedure do you need to follow and what do you check for after the trial prosthesis has been returned from the dentist? 

37. Before waxing the denture for finishing, what aspects of the denture do you need to evaluate?

38. Following the instructions on the laboratory script given by clinician,when working with heat cured acrylic you may run into issues during processing.  Name four (4) i.e. issues that can occur when using heat cured acrylic.

39. Give 3 examples of denture processing techniques.which is superior and why?

40. How can distortion of the denture base be avoided while processing?

41. Name two techniques used for polishing dentures.Indicate the preferred method, name the tools used and describe how a high lustre can be achieved.
42. What is the purpose of assessing the completed prostheses on an articulator and what needs to be done to complete ready for dispatch?

43.The following are photos of three faults in the complete acrylic dentures.  Identify the fault and describe what caused it. 

Case Scenarios

You work for a company called A1 Dental Laboratory. The company provides full laboratory services to Dental practitioners mainly in the north eastern suburbs that include:

•    Full prosthetics  
•   Partial prosthetics   
•    Crown & bridge  
•   Cast partial denture framework 

The organization is located on the high street in the local shopping strip. The opening hours are between 9am and 5pm daily. There are four full time staff working daily in this organization including the following:

•   Margret Simmons – Senior Dental Technician and PCBU  
•   Charlie Ling – Dental Technician 
•  Allan Smith – Apprentice Dental Technician  
•  Lisa Jones – Business administration manager

The company has a practice manual in the administration office which includes all of the organizations policies and procedures, particularly with regards to safe work practice and infection control policies and procedures.

44. Your wax try in has returned from the clinic, there are no instructions on the script of any required changes, however, on the articulator you notice that the Incisal guide pin has been changed.
Do you need to do anything?

45. When making a self-cured acrylic special tray, your material is not setting, what would you need to refer to and where would you find this information?
46. You have processed your complete dentures, remounted on semi adjustable articulator and notice that the VD is open by 3mm.  What could have wrong and how would you go about correcting it?

47. Once you de-flask your complete dentures, you notice that two of the denture teeth have not adhered to the acrylic.  What is the cause and how would you repair?

This Medical Science Assignment has been solved by our Medical Science Expert at Online Assignment Bank. Our Assignment Writing Experts are efficient to provide a fresh solution to this question. We are serving more than 10000+ Students in Australia, UK & US by helping them to score HD in their academics. Our Experts are well trained to follow all marking rubrics & referencing Style. Be it aused or new solution, the quality of the work submitted by our assignment experts remains unhampered.You may continue to expect the same or even better quality with the used and new assignment solution files respectively. There’s one thing to be noticed that you could choose one between the two and acquire an HD either way. You could choose a new assignment solution file to get yourself an exclusive, plagiarism (with free Turn tin file), expert quality assignment or order an old solution file that was considered worthy of the highest distinction.