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35 Cards in this Set
- Front
- Back
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Arch form is important for what? What kind of arch do humans have? |
Esthetics and function - elliptical-shaped arch, more curvature in anterior region. Molars more straight --> mandibulars especially |
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Maxillary arch predominates/influences because? |
Arch is wider and longer |
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Maxillary teeth least deviation from vertical. Proximal and Facial |
Proximal 1st premolar -5 Facial central incisor -2 |
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Mandibular teeth least deviation from vertical Proximal and facial |
Proximal-1st and 2nd premolar at 9 Facial- lateral incisor at 0 |
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Curve of spee |
imaginary line that extends from the cusp of the mandibular canine along the facial cusp tips of the posterior teeth resulting in an anteroposteric curve |
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Curve of wilson |
From frontal view, imaginary curve line connecting the facial and lingual cusps of the posterior teeth |
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Plane of occlusion |
curve of wilson and spee aka "plane of occlusal curvature" |
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Proximal contact areas are for? |
allow proper arch form prevent accumulation of food |
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Proximal contact areas on anterior teeth have what shape? |
incisogingival ovoid (allows for insical and gingival embrasure) |
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Contacts on posterior teeth are located where? Anterior teeth Faciolingually view |
slightly facial especially in premolars and mandibular located in the middle 1/3 |
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Facial perspective of max anterior teeth |
Midline - incisal 1/3 Distal of central and mesial of canine and lateral- junction Distal of lateral and canine are middle 1/3 |
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Posterior teeth contact from facial perspective |
middle 1/3 |
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Facial perspective of mandibular anterior teeth |
Midline --> mesial canine is incisal third Distal canine is middle third |
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Mandibular 1st molar contact |
the distal contact on the 1st molar is entirely the distal cusp |
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Height of contour serves what purpose? |
Protective function for gingival tissues and emergence profile |
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Maxillary height of contour on anterior teeth |
Facial and lingual it is located on cervical 1/3 1/2 mm |
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Maxillary height of contour on posterior teeth |
Facial 1/2 mm on cervical 1/3 Lingual 1/2 mm on middle 1/3 |
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Mandibular teeth height of contour for FACIAL surfaces? |
1/2 mm located on cervical 1/3 |
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Mandibular teeth anterior, height of contour? Lingual |
1/2 mm located on cervical 1/3 |
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Mandibular teeth premolars, height of contour? Lingual |
1/2 mm located on middle 1/3 |
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Mandibular teeth molars, height of contour? Lingual |
1 mm located on middle 1/3 |
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Greatest curvature of the cervical line? |
Maxillary central incisors: Mesial 3.5mm Distal 2.5 mm Maxillary > Mandibular Mandibular is 3.0 and 2.0 |
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Gingiva ideal pocket size? |
3mm |
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Gingiva purpose |
forms a seal around the entire circumference of each tooth. Attached and free.. Oral hygiene is dependent on it |
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Periodontal ligament |
attaches tooth to alveolar bone shock absorber/innervated longitudinal vs. lateral forces |
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Orthodontic forces are applied to crown has an effect on ? |
periodontal fibers and osseous tissue in the alveolus |
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Arch alignment is altered by? |
occlusal imbalances or orthodontics |
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When teeth shift they may affect |
Alveolar height |
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Which fibers are known to resist forceful impaction of a tooth into the alveolus, consistent with many types of trauma? |
Oblique |
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Periodontal disease will affect which periodontal fibers? |
Level of CEJ circumferential, alveolar crest, transseptal, and horizontal CATH Degrades the bone |
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fiber located on cervical 1/3 of the crown and root. Influences rotation |
Circumferential |
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Periodontal fibers |
9 Gingival, alveolar crest, horizontal, oblique, periapical, interradicular, transseptal, circumferential |
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Transseptal fibers do what |
Type of periodontal fiber that help to maintain contiguous proximal contact |
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Why is gingival embrassure larger? |
so gingival tissue and interseptal bone can be accomodated |
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Open contact area where? |
Midline of 24 and 25 |
