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Karl Yveth A. Aquino
DDM2B
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• The anterior teeth are primary selected to satisfy
the aesthetic requirement.
•The posterior teeth are primarily selected to
satisfy the functional requirements
•The anterior teeth are composed of six maxillary
and six mandibular teeth
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The selection of artificial teeth for
complete denture can be divided into
two sections.
• Anterior teeth selection
• Posterior teeth selection
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1. Size of the teeth
2. Form of the teeth
3. Color / shade of the teeth
4. Composition of material of teeth
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1. Pre-extraction records
A. Photographs
B. Diagnostic cast
C. Radiographs
2. Post extraction records
3. Proper contour of occlusal rim and High lip line
4. Arch form and size
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PRE EXTRACTION
◦ Recent photographs
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◦ Diagnostic cast
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◦ Radiographs
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2.POST EXTRACTION◦Size and form of edentulous foundation
◦Matching teeth to face forms and arch form
◦Previous denture
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3. Proper contour of occlussal rim and high hip line
Indication for inciso-gingival length
The lower edge of the upper occlusion rim should be 2mm below
the lip when it is at rest.
The distance from the lower edge of the upper occlusion rim to the
high lip line is measured and it represent the length of the upper
anterior teeth
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The size of teeth comprises their width and length and is represented by the term mold.
The size compromise of:
1. Length (incisogingival)
2. Labiolingual width
3. Mesiodistal width
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1. A vertical line extending along the lateral surface of the ala often
will pass through the middle of the natural upper canine
2. Measure the distance between the previously marked canine
lines on the maxillary wax occlusion rim.
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3. Using the flexible ruler. This will indicate the width of the maxillary
six anterior teeth on the curve. Distance between the 2 canine
lines = MD width of the six anterior teeth
4. Measurement on skulls indicate that the width of the natural
central incisor, approximately 1/16 the bizygomatic width patient’s
face
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1. Outline form of the face
2. Shape of the arch
3. Gender and age
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Sex, personality, age are the factors which will determine the form of the anterior teeth
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Curved facial features are associated with femininity and square features are associated with masculinity
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MASCULINITY FEMININITYProminent teeth Smaller teeth
Square arch form Curved contours and arch form
Square labial surface Curved labial surface
Square incisal edges and corners
Round incisal edges and corners
Darker shade Delicate appearance
Flat smile line Curved smile line
Canine- cervical area is more prominent and visible
Canine-mesial 3rd only visible
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YOUNGER PEOPLE OLDER PEOPLE
Lighter shade Darker shade
More incisaltranslucency
Less incisal translucency
Minimal wear of incisaledges
Increased wear of incisaledges
Curved smiling line Flat smiling line
Pointed canines Loss of tip of canines
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Teeth should be selected according to the patients personality
The patients◦ vigorous ◦ delicate.
More squarish and large teeth vigorous people.
The anteriors should be in flat plane for executive people
For executives teeth should be relatively smaller and more symmetrical
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Color is described by means of
- hue
- saturation and chroma
- brilliance
-Transluscent
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1. Hue.
2. Saturation and Chroma
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3. Brilliance
4. Translucency
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There are two main types:
1. Porcelain,
2. Acrylic
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Acrylic teeth :1- Not brittle, but poor abrasionresistance.
2- Esthetic very good.
3- Chemical bonding with denture base.
4- Easily ground and polish.
5- Transmit fewer forces to the mucosa.
6- No clicking on contact.
7- Thermal expansion same as acrylic denture base.
PORCELAIN TEETH :
1- BRITTLE, MORE RESISTANCE TO ABRASION
2- EXCELLENT (DOES NOT STAIN).
3- MECHANICAL BONDING BY PINS OR UNDERCUTS HOLES.
4- DIFFICULT TO GRIND AND POLISH.
5- MORE FORCES TO THE MUCOSA.
6- CLICKING ON CONTACT.
7- MUCH LOWER THAN ACRYLIC CAUSES STRESSES IN ACRYLIC DENTURE BASE.
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It is classified under 2 division, namely:
Size of the teeth
Form of the teeth
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The ff. factors are considered while selecting the size of the teeth
Buccolingual width
Mesiodistal length
Occlusogingival height
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Buccolingual width
Should be greatly reduced from the width of natural teeth
that they replace.
It should be less than the buccolingual width of the
natural teeth to reduce the force cting on the alveolar
ridge, however ,that should not affect the check supprt
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Mesiodistal width (anteroposterior)
Upper (distal of canine to the tuberosity prominence)
Lower (use a ruler to mark the crest of the mandibular
ridge from the base of the retromolar pad to the canine
area, and then measure from the distal of the canine to
ascending area of the mandible
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Occluso-gingival height
It depends on:◦ The inter-arch distances between the ridge
◦ Amount of the bone resorption, resorbed residual ridge RRR
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Factors that control the selection of the form of the tooth
Condylar inclinationTeeth with a high cuspal height are require for the
patients with steep condylar guidance. This is because the jaw separation will increase for patient with acute condylar guidance during protrusion.
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Height of residual ridgeShallow cusped teeth go better with shallow ridge
Patient’s age:Teeth with shallow cusps are preffered in older age.
Ridge relationship:0 degree or monoplane teeth are preferred for
cases with posterior cross bite or severe class II relationship
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• Cusp teeth
oAnatomic teeth
oSemi anatomic or modified cusp or low cusp
teeth
• Cuspless teeth
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Advantages of anatomic teeth
1.Esthetically acceptable 2.More efficient thereby reducing the
forces3.They can arranged in balance4.Offer the maximum opportunity for fully
balanced occlusion5.more masticatory efficiency
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Disadvantages of anatomic teeth
1.More horizontal during function
2.Need eccentric records and required
adjustable articulator
3.Lateral torque in eccentric contacts and
higher chance for premature traumatic
contacts
4.Difficulty in relining and rebasing
5.Fast bone resorption
6.Cannot be used in severely resorbed cases
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Advantages of semi anatomic teeth1. Easier to arrange and obtain balance
2. Can provide freedom if setlling occurs
3. Reduction of lateral stresses (decrease lateral force)
4. Provides all the advantages of cusp teeth
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Disadvantage of semi anatomic teeth1. Less aesthetic (buccal cusp are shorter)
2. Less chewing efficiency (controversial:some claim greater)
Advantage of cuspless oclussal schemes
More stable lower denture during mastication
More vertical chewing stroke
More shear in the chewing stroke
Disadvantage of cuspless occlusal schemes
Less stability to the upper denture
No balance in excursive glide
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Advantage of 0 degree teeth Easy to set up
Least lateral stress
Least anterior posterior interference after settling
Best for patient with poor muscular control
Best for patient with poor ridge relationship
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Disadvantage of 0 degree teeth Very difficult to obtain balanced occlusion in
excursive movement
Less chewing efficiency especially for fibrous or tough food
Poor esthetic
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Boucher’s Prosthodontic Treatment for Edentulous Patients , Ninth Edition Textbook of complete Dentures Textbook of prosthdontics, deepak nallaswamy ; jaypee
https://www.google.com.ph/search?q=semi+anatomic+teeth&newwindow=1&source=lnms&tbm=isch&sa=X&ei=Ooa6VMKvFIuXuASG2IDoBA&ved=0CAgQ_AUoAQ&biw=1366&bih=677#imgdii=_&imgrc=U1l_jx6ztimFTM%253A%3BoCqneQySiDKC8M%3Bhttp%253A%252F%252Ffce-study.netdna-ssl.com%252Fimages%252Fupload-flashcards%252Fback%252F3%252F8%252F18183023_m.jpg%3Bhttp%253A%252F%252Fwww.cram.com%252Fflashcards%252Fdentures-retention-683446%3B240%3B133
https://www.google.com.ph/search?q=nonanatomic+teeth&newwindow=1&source=lnms&tbm=isch&sa=X&ei=EIi6VIPCOMGouwS4soHQCg&ved=0CAgQ_AUoAQ&biw=1366&bih=677#imgdii=_&imgrc=U1l_jx6ztimFTM%253A%3BoCqneQySiDKC8M%3Bhttp%253A%252F%252Ffce-study.netdna-ssl.com%252Fimages%252Fupload-flashcards%252Fback%252F3%252F8%252F18183023_m.jpg%3Bhttp%253A%252F%252Fwww.cram.com%252Fflashcards%252Fdentures-retention-683446%3B240%3B133
http:://www.autostream.com/presentation
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