Diagnostic cast.pptx

education dentistry

1. Diagnostic cast, Radiographs Dr Ayesha Sadaf

2. ONE MINUTE PAPER

3. Q : A 60 year old male patient came for replacement of missing teeth. On intraoral examination you found out patient is edentulous. His maxillary residual ridge is low well rounded and mandible has knife edge ridge. Maxillary and mandibular arches belong to which order of A Atwoods classification? a) Maxilla order 4 and mandible order 5 b)Maxilla order 5 and mandible order 4 c)Maxilla order 1 and mandible order 2 d) Maxilla order 6 and mandible order 7

4. Pre Extraction records Patient photographs Diagnostic casts Radiographs Pic of close relatives Previous dentures

5. Patients Photographs

6. DIAGNOSTIC CASTS A diagnostic dental cast is a cast/ model of a person’s teeth that a dental professional uses as a guide in the application of corrective or restorative dentistry. Such diagnostic casts are often referred to as study models. 

7. STUDY MODEL A study model dental cast is a  positive   reproduction  of the  form of tissues of the upper jaw or lower jaw , which is made in an impression and over which denture bases or other dental restorations may be fabricated.

8. DIAGNOSTIC CAST Obtained from primary impression. It allows the evaluation of hard and soft tissue anatomy without the presence of the patient. Diagnostic casts provide the base from which custom impression trays are fabricated.

9. Parts of study cast

10. Significance of diagnostic casts It allows the evaluation of hard and soft tissue anatomy without the presence of the patient

11. SIGNIFICANCE OF DIAGNOSTIC CAST Measurement of arch width and length

12. Patients previous dentures Gives information about denture hygiene Maintenance at home (home care) Material of denture

13. Patients previous dentures occlusion aesthetics Shade of teeth Tooth arrangement

14. Patients previous dentures retention stability support

15. Diagnostic Radiographs To Understand residual ridge morphology Tooth roots and pathologies

16. Pattern of Bone Resorption

17. MAXILLOMANDIBULAR RELATIONS IMPACTED TEETH PATTERN OF BONE RESORPTION

18. Show the relative thickness of the submucosa covering the bone in edentulous regions, the location of the mandibular canal, and the mental foramina in relation to the basal seat for dentures More superficial location of mental foramen, more will be the bone resorption

19. Gives an idea about quality of bone More radiopaque bone, denser it will appear on radiograph

20. Cone beam computed tomography 3 dimensional View

21. Diagnostic casts , Radiographs and photographs helps in selecting impression technique, planning pre-prosthetic surgery and selection of teeth., ultimately formulating a treatment plan.

22. Patient specific care

23. How to read panaromic radiograph