BASING AND TRIMMING OF ORTHODONTIC MODELS

11,009 views

Published on

BASING AND TRIMMING OF ORTHODONTIC STUDY MODELS

Published in: Education, Lifestyle, Business
2 Comments
20 Likes
Statistics
Notes
  • @doctorrr thnqq.. actlly tis ws jus fr d pictures!! explaination was givn verbally
       Reply 
    Are you sure you want to  Yes  No
    Your message goes here
  • Nice presentation, it would be more helpful if you add little description to slides. Good work.
       Reply 
    Are you sure you want to  Yes  No
    Your message goes here
No Downloads
Views
Total views
11,009
On SlideShare
0
From Embeds
0
Number of Embeds
11
Actions
Shares
0
Downloads
537
Comments
2
Likes
20
Embeds 0
No embeds

No notes for slide

BASING AND TRIMMING OF ORTHODONTIC MODELS

  1. 1. STUDY MODELBASING AND TRIMMING PRESENTED BY SUSNA SARAH PAUL DEPT. OF ORTHODONTICS
  2. 2. CONTENTS ● INTRODUCTION ● STUDY MODELS ● BASING ● TRIMMING OF MAXILLARY CAST ● TRIMMING OF MANDIBULAR CAST ● CONCLUSION
  3. 3. ● Orthodontic diagnosis deals with recognition of the various characteristics of the malocclusion. Diagnostic aids fall into two categories -Essential Diagnostic Records -Supplemental Diagnostic Records
  4. 4. ESSENTIAL DIAGNOSTIC AIDS SUPPLEMENTAL DIAGNOSTIC AIDS ● 1)CASE HISTORY. ● 1)SPECIALIZED RADIOGRAPHS ● 2)CLINICAL EXAMINATION. ● 2)ELECTROMYOGRAPHY. ● 3)STUDY MODELS. ● 3)HAND-WRIST RADIOGRAPHS. ● 4)RADIOGRAPHS ● 4)ENDOCRINE TESTS. ● 5)FACIAL PHOTOGRAPHS. ● 5)BMR ESTIMATION. ● 6)OCCLUSOGRAMS.
  5. 5. ● According to Proffit, these records fall into three categories: I. Teeth and oral structures II.Evaluation of facial proportion III.Occlusal evaluation
  6. 6. STUDY MODELS ● Orthodontic study models are essential diagnostic records, which are accurate plaster reproductions of the teeth and their supporting soft tissues and which help to study the occlusion and dentition from all the three dimensions.
  7. 7. Purpose of Making Study Models 1) Valuable in planning treatment as threedimensional records of patients dentition. 2) Occlusion can be visualized from all aspects. 3) Provide a permanent record at the start of therapy.. 4)nature and severity of the malocclusion. 5)explain the treatment plan and progress.. 6)transfer records.
  8. 8. Steps in construction of study models. 1.Impression making. 2.Taking a wax bite. 3.Disinfection of the impression. 4.Casting the impression. 5.Basing and trimming. 6.Finishing and polishing. 7.Care of the study models.
  9. 9. BASING
  10. 10. RUBBER MOULD BASE FORMERS
  11. 11. TRIMMING OF MODELS
  12. 12. Template or degree plate
  13. 13. Squaring tool and angle guide (Tsquare)
  14. 14. TRIMMING OF MAXILLA
  15. 15. TRIMMING OF MANDIBLE
  16. 16. 13 mm ANATOMICAL PORTION ARTISTIC PORTION 3:1
  17. 17. 60mm 70mm 55mm
  18. 18. CONCLUSION Models accurately reproduce the teeth and their surrounding soft tissues. Models are to be trimmed so that they are symmetrical and pleasing to the eye. Models are to be trimmed so that they meet the measurements and angles as proposed for trimming them. Models are to have a clean, smooth, bubble free surfaces with sharp angles where the cuts meet.

×