Teeth selection,2017
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This document discusses factors to consider when selecting teeth for dentures. For anterior teeth, size, form, and color should match the patient's face, gender, and other features. Pre-extraction records, anthropological measurements, anatomical landmarks, and theoretical concepts can guide tooth size. Posterior teeth selection considers mesiodistal length, buccolingual width, and occlusogingival height. Morphology like anatomic, semi-anatomic, and cuspless teeth affect aesthetics, function, and stress during chewing. Patient characteristics like age, habits, and ridge relationship also influence tooth selection.
Teeth selection,2017
- 2. WHEN ??
- 3. IS IT IMPORTANT ? • Aesthetic • Functional
- 5. The patient should be seated upright position Adequate light (Day light, neon ,fluorescence).
- 6. A) ANTERIOR TEETH • Anterior teeth paly important role in the aesthetic of a patient. They are not subjected to heavy occlusal load like the posterior. • Factors considered during the selection: Size Form Colour /shade
- 7. • Size of the anterior teeth should be appropriate to the size of the face ,gender. • Guide to select the size: Pr-extraction record Anthropological measurements of the patient. Anatomical landmark Theoretical concepts
- 9. METHODS USING ANTHROPOLOGICAL MEASUREMENTS Width of the upper central incisor = circumference of the head 13 The width of the maxillary central incisor=Bi-zygomatic 16
- 10. BASED ON THE WIDTH OF THE NOSE
- 11. METHOD USING ANATOMICAL LANDMARKS A-Sum of the width of all anterior and posterior teeth
- 12. B-Distance between two canine eminence C-Distance between the attachments of buccal frenal
- 13. METHODS USING THEORETICAL METHODS Winkler's concept : The teeth should be selected based on three different views 1-physiologicaly-biologically 2-psychologically 3-biomechanical
- 15. FORM OF THE ANTERIOR TEETH Shape of the patient’s face or facial form Ovoid Tapering Square Combination of the above
- 17. Dentogenic concept (Gender, Personality, Age): Female: Male:
- 18. Age: • Old people usually have abraded teeth with worn out contacts. Personality: • Vigorous people…Square, large teeth. • Executives…..small, symmetrical arrange.
- 19. COLOUR FOR ANTERIOR Age Complexatio n Colour of patient’s hair Colour of eyes Habits
- 20. POSTERIOR TEETH SELECTION Mesiodisal lengthBuccolingual width Occluso-gingival Hight
- 21. FACTORS CONTROL THE FORM OF POSTERIOR TEETH Condylar inclination Hight of residual ridge Patent’s age Ridge relationship
- 22. MORPHOLOGICALLY TEETH CAN BE CLASSIFIED AS: Anatomic teeth Aesthetic Great chewing sufficiency Angles 33°, 30° Difficult and time consuming to obtain balanced occlusion More latera stress in function resorption Semi anatomic teeth (Modifiedcusp,Low-cusp) More flexible to arrange Angles 10° Less aesthetic and chewing efficiency than anatomic Cuspless teeth (Flat,Monoplane,0°) Easy to set up Least lateral stress Best for patent wt poor muscular control or poor ridge relationship Less chewing efficiency Poor esthetic
- 23. Thank you!
- 24. REFERENCES