Term
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Definition
| contact relationship between the maxillary and mandibular teeth when the jaws are in fully closed position. |
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Term
What are the factors related to occlusion? |
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Definition
| Musculature and neuromuscular patterns. Also TMJ functioning |
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Term
What does occlusal trauma mean? |
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Definition
| Trauma to the periodontium resulting from occlusal disharmony. |
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Term
Is there an ideal occlusion? |
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Definition
| 138 Occlusal contacts for the permanent dentition of 32 teeth. |
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Term
What is centric occlusion? |
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Definition
| voluntary position of the dentition that allows the maximum contact when the teeth occlude. |
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Term
What is the difference between overjet and overbite?
which is greater in male or female? |
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Definition
| Overjet is the amount your teeth stick out horizontally. Overbite is the amount they hang over vertically. Overjet equal in male and female. Overbite more prominent in females. |
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Term
What are the contact areas of teeth, and why are they important? |
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Definition
| Contact between neighboring teeth. Stabilizes teeth in the dental arch and protects the interdental gingiva. |
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Term
How is each arch divided when describing arch form? |
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Definition
| 3 segments. Anterior teeth premolars and molars |
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Term
Discuss the five phases of arch development. |
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Definition
| 1. permanent first molars erupt. 2. Perm. Anterior Teeth Central then lateral Incisors. 3. phase 3 = Premolars erupt. 4. canines erupt - 2nd molars same time. 5 phase - 3rd molars |
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Term
| Compare the curve of Spee and the curve of Wilson |
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Definition
Spee - curved alignment of all the teeth.
Wilson - rounding seen from posterior of mandibular jaw. |
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Term
What is the root axis line, and why is it important? |
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Definition
| Imaginary line representing the long axis of the tooth. Allows for proper spacing between roots for blood and nerve supply. Securing anchorage of the roots in jawbone. |
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Term
Explain centric stops, supporting cusps, vertical dimension of the face, and the Golden Proportions. |
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Definition
| centric stops or contacts are: height of cusp, marginal ridges, central fossae. 2. Supporting cusps are ones that function during centric occlsion (lingual cusps of max buccal cusps of mand. 3. dividing the face into 3rds. 4. proper function + aesthetics |
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Term
What is centric relation, and how does one achieve it in a patient? |
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Definition
| the end point of closure in the mandible. Have complete mandibular retraction |
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Term
What are premature contacts, and how does one find them in a patient? |
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Definition
| one or more teeth contact before the other teeth. If they slide teeth from side to side in centric relation and it does not equal centric occlusion may be caused by premature contacts |
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Term
Discuss lateral and protrusive occlusion. |
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Definition
| lateral are when teeth are shifted to one side so that only those canines bare the stress and touch. Protrusive is the same only with the 8 anterior teeth touching. |
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Term
What is interocclusal clearance and the mandibular rest position? |
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Definition
| rested mandible can measure the distance between occlusions = interocclusal clearance. |
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Term
| What is malocclusion, and what is its impact? |
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Definition
| Failure to have an overall ideal form to the dentition while in centric position. assosiates with occlusal trauma. Impact on appearance. increased periodontal disease |
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Term
Explain Angle’s classification of malocclusion. |
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Definition
| seperated class 1,2 and 3. malocclusion of molar and canine. |
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Term
What are the different facial profiles for the different classifications of Angle’s? |
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Definition
| Mesognathic (class 1 normal) , Retrognathic (Class 2 - protruding max) class 2 div 2 is mesognathic profile severe overbite may occur , Prognathic (class 3 - protruding mand) |
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Term
Discuss the role of the primary occlusion. |
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Definition
| flush terminal plane and mesial step will most likely allow for good occlusion. distal step does not. |
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Term
What are parafunctional habits, and what complications can result if they are present? |
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Definition
| movements within the mandible that are not within normal range. gingival recession, attrition, enlarged muscles |
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Term
| What are the skeletal considerations when dealing with malocclusions? |
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Definition
| maxilla and mandible abnormalities. protruding retruding chin, resting lip closure problem, elongation of face |
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Term
What are the myofunctional considerations in occlusion? |
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Definition
| tongue thrust, sucking habits, open lips, structural problems |
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