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Dentures 2 - Classification
Classification of complete edentulism
43
Dentistry
Graduate
06/05/2013

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Term
Diagnostic criteria for classification system.
Definition
1. bone height-mandibular
2. maxillomandibular relationship
3. residual ridge morphology-maxilla
4. muscle attachments
Term
class i
Definition
ideal or minimally compromised
Term
class II
Definition
moderately compromised
Term
class III
Definition
substantially compromised
Term
class IV
Definition
severely compromised
Term
The diagnostic criteria are ordered by their ____ nature and not in their rank of significance.
Definition
objective
Term
the underlying bony foundation is...
Definition
denture foundation area
tissues remaining for reconstruction
loss of facial muscle support/attachment
decrease in total facial height
residual ridge morphology
Term
what diagnostic measurement reveals the most information of all of the criteria?
Definition
residual bone height
Term
the measurement of the residual bone height should be made where in order to minimize variance in techniques?
Definition
portion of the mandible of the least vertical height
Term
TYPE 1 residual bone height =
Definition
21 mm or greater
Term
TYPE II residual bone height =
Definition
16-20 mm
Term
TYPE III residual bone height =
Definition
11-15 mm
Term
TYPE IV residual bone height...
Definition
10 mm or less
Term
maxillomandibular relationship classification relates to?
Definition
the position of the artificial teeth to the residual ridge and the opposing dentition.
Term
CLASS I maxillomandibular relationship allows...
Definition
tooth postion that has normal articulation with the teeth supported by the residual ridge
Term
CLASS II maxillomandibular relationship requires...
Definition
tooth position outside the normal ridge relation in order to attain phonetics and articulation...ie , anterior or posterior tooth position not supported by the residual ridge/anterior vertical overlap that exceeds the principles of articulation
Term
CLASS III Maxillomandibular relationship requires...
Definition
tooth position outside the normal ridge relation in order to attain phonetics and articulation; i.e., crossbite—anterior or posterior, tooth position not supported by the residual ridge.
Term
CLASS III Maxillomandibular relationship requires...
Definition
tooth position outside the normal ridge relation in order to attain phonetics and articulation; i.e., crossbite—anterior or posterior, tooth position not supported by the residual ridge.
Term
Residual ridge morphology of the maxilla is the most ___ criteria for the maxilla since the measurement of the residual bone height by radiology is not reliable.
Definition
objective
Term
Residual ridge morphology of maxilla TYPE A
Definition
-anterior labial and posterior buccal vestibule depth that resists vertical and horizontal movement of the denture base
- palatal morphology that resists vertical and horizontal movement of the denture base
- sufficient tuberosity definition
- hamular notch definition is well defined to establish posterior extension of the denture base
- absence of tori or exotoses
Term
Residual ridge morphology of maxilla TYPE B
Definition
- loss of posterior buccal vestibule
- tuberosity and hamular notch are poorly defined compromising the delineation of the distal extension
- Maxillary palatal and/or lateral tori are rounded and do not affect the posterior extension of the denture base
- Palatal vault morphology that resists vertical and horizontal movement of the denture base
Term
Residual ridge morphology of maxilla TYPE C
Definition
- loss of anterior labial vestibule
- prominent midline suture
- maxillary palatal and/or lateral tori with bony undercuts that do not affect the posterior extension of the denture base
- hyperplastic, mobile anterior ridge that offers minimum support and stability of the denture base
- palatal vault morphology that offers minimal resistance to vertical and horizontal movement of the denture base
- reduction of the post malar space by the coronoid process during mandibular opening and or excursive movements
Term
residual ridge morphology of maxilla TYPE D
Definition
- loss of anterior labial and posterior buccal vestibules
- maxillary palatal and or lateral tori rounded or undercut that interferes with the posterior border of the denture
- hyperplastic, redundant anterior ridge
- palatal vault morphology that does not resist vertical or horizontal movement of the denture base
- prominent anterior nasal spine
Term
The location and influence of the muscle attachments affecting a complete denture are most commonly associated with the _____ denture.
Definition
mandibular
Term
The location and influence of the muscle attachments affecting a complete denture are most commonly associated with the _____ denture.
Definition
mandibular
Term
The location and influence of the muscle attachments affecting a complete denture are most commonly associated with the _____ denture.
Definition
mandibular
Term
The location and influence of the muscle attachments affecting a complete denture are most commonly associated with the _____ denture.
Definition
mandibular
Term
although muscle attachment is the most significant measurement, it is also ....
Definition
the most difficult to quantify
Term
MUSCLE ATTACHMENT TYPE A
Definition
adequate attached mucosal base without undue muscular impingement during normal function in all regions
Term
MUSCLE ATTACHMENT TYPE B
Definition
- adequate attached mucosal base in all regions EXCEPT anterior buccal vestibule (cuspid to cuspid)
- high mentalis muscle attachment
Term
MUSCLE ATTACHMENT TYPE C
Definition
-adequate attached mucosal base in all regions except anterior buccal and lingual vestibule (cuspid to cuspid)
- high genioglossus and mentalis muscle attachments
Term
MUSCLE ATTACHEMENTS TYPE D
Definition
- adequate attached mucosal base ONLY in the posterior lingual region
- all other regions are detached
Term
MUSCLE ATTACHMENTS TYPE E
Definition
- no attached mucosa in any region
- cheek and lip movement = tongue movement
Term
Full Class I
Definition
1. RBH 21 mm or greater
2. MaxMand relationship = class I
3. RRM Type A
4. muscle attachments Type A or B
Term
Full Class II
Definition
1. RBH 16-20 mm
2. mandmax relationship Class I
3. RRM Type A or B
4. muscle attachments Type A or B
Term
Full Class III
Definition
1. RBH 11-15 mm
2. mandmax relationship Class I, II, or III
3. RRM Type C
4. muscle attachments = Type C
Term
Full Class IV
Definition
1. RBH <10 mm
2.. maxmand relationship class I, II, or III
3. RRM type D
4. muscle attachments type D or E
Term
Full Class IV
Definition
1. RBH <10 mm
2.. maxmand relationship class I, II, or III
3. RRM type D
4. muscle attachments type D or E
Term
what are the conditions requiring preporosthetic surgery? (9)
Definition
1. minor soft tissue procedures
2. minor hard tissue procedures
3. implant placement (simple) - no augmentation required
4. multiple extractions leading to complete edentulism for immediate denture placement
5. limited interarch space - 18-20 mm
6. moderate psychosocial considerations and or moderal oral manifestations of systemic diseases or localized soft tissue conditions
7. TMD symptoms present
8. large tongue with or without hyperactivity
9. hyperactive gag reflex
Term
what are the major conditions which require preprosthetic surgery? (7)
Definition
1. implant placement (complex) - augmentation required
2. surgical correction of dentofacial deformities
3. hard tissue augmentation
4. major soft tissue revision (vestibular extensions with or without soft tissue grafting)
5. history of paresthesia or dysensthesia
6. insufficient interarch space with surgical correction required
7. acquired or congenital maxillofacial defects
Term
what is the refractory patient?
Definition
a patient who has chronic complaints following appropriate therapy. these patients continue to have difficulty in achieving their treatment expectations despite the thoroughness or frequency of the treatment provided
Term
in those instances when a patient's diagnostic criteria are mixed between two classes, any single criteria of a more complex class will move the patient into ___________
Definition
that respective class
Term
utilization of this system is indicated for _______ classification of patients.
Definition
pretreatment
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