Patient Analysis and Anatomy; 41Q Flashcards
Literature currently suggests that upper lip retracts approximately ___ - ___% of the distance the upper incisors are retracted
40 - 60%
Literature currently suggests that the lower lip retracts approximately ___% the distance of lower incisor retraction
100%
how many bones make up the orbit?
seven
which bones house the orbit?
Palatine, maxillary, ethmoid, lacrimal, zygomatic, sphenoid, frontal
what portion of the maxillary bone protrudes to meet the zygomatic bone?
malar process
on a cephs, what is the most posterior point on the foramen magnum at the midline
opisthion
on a ceph, what is the highest point on the averaged outlines of the retrocondylar incisures of the occipital bone. It approximates the antero-posterior center of the foramen magnum
Bolton point
on a ceph, which point represents the distance midway on the perpendicular from Bolton-Nasion to S
Broadbent point
on a ceph, what is prosthion and what is another name for it?
lowest and most anterior point of the alveolar process in the median plane between the central incisors
aka supredentale
what is another name for Subspinale as a ceph point?
A point
what is another name for the ceph point supramentale
B point
what is the ceph landmark that is the point of intersection between the posterior border of ramus and the inferior surface of basilar part of occipital bone. Represents the intersection of the contour of the posterior cranial base and the posterior contour of condylar processes.
articulare
machine prior on ( higher / lower ) and (anterior / posterior ) to anatomical porion
lower
anterior
using machine potion instead of anatomical potion causes an increase in which two measurements?
FMA and Y axis
t
e right orbit is shown on the (right / left ) side on a standard ceph?
right
what is the most stable ceph point on a. growing skull?
sella turcica
Frankfort horizontal should be parallel/horizontal with: (3)
palatal plane (Ricketts)
ANS-PNS
Zygomatic arch
when 2 lines are seen at the mandibular border, know that this is caused by:
magnification
Kokich - typically implant placement can be done as early as ___ for female and ___ for males
F: 14
M: 19
Kokich - the time it takes bone to deposit and remodel around an implant is ___ - ___ months
16-18 mo
what type of bone is typically present adjacent to an implant?
nonlamellar
for osseointegration, bone undergoes remodeling to form secondary ___________ which strengthens the bone
osteons
in humans, ___ months (in the mandible) appears satisfactory to ensure the implants will remain immobile during the application of orthodontic force
6 mo
T/F: A diagnostic set up mandatory for patients missing multiple permanent teeth and who will require a combination of orthodontics and restorative dentistry
true
If the restoration on a peg lateral will be a permanent crown, position the peg: ___________________, leaving 0.5 to to 0.75 mm OJ
IIn the center of the Ridge buccolingually
If the restoration on a peg lateral will be veneers, position the peg: ___________________
lingually to contact the mandibular incisors in centric occlusion
If there is >1mm sulcus depth refer to perio to create ideal gingival form ( before / after ) bracket removal
before
which radiograph has the most diagnostic power?
vertical bitewing
which radiograph regularly leads to under diagnosis of interproximal craters between upper molars, infrabony defects on mesial of U4s and defects around lower incisors
panoramic images
what effect can clenching/bruxing have during ortho Tx?
can cause severe osseous breakdown
which type of graft offers a greater degree of root coverage, is more esthetic, and less traumatic
CT graft
will a 2-walled defect improve with ortho?
no - reshape the crater and reduce the pocket depth
with 3-walled intrabony defects, Tx can include a bone graft with _____ and a membrane. The membrane is removed at 4-6 weeks and graft is allowed to mature for 2-3 months. If stability for 3-6 months, start ortho.
EDTA
T/F: hemiseptal 1-2 walled defects can be eliminated with ortho
True
(applies to tipped or supra erupted teeth)
Match the Tx with Class I, II, or III furcation involvement
- Grafting and membrane barrier
- Amenable to osseous sx correction with a good prognosis
- Open flap curettage and create through and through furcation for cleaning, Hemisection, or Extraction and implant
- I: Amenable to osseous sx correction with a good prognosis
- II: Grafting and membrane barrier
- III: Open flap curettage and create through and through furcation for cleaning, Hemisection, or Extraction and implant
Furcation involvement class Its and IIIs can be treated with root amputation. the ))))) root is most favorable
DB root
for furcation III involvement, what do you do first: ortho or hemisection of the root?
ortho first
molar teeth need ___ - ___mm of separation between the roots of another tooth
2-3mm
T/F: Hopeless teeth can be used for anchorage and then ext after tx if inflammation can be maintained
True
Takes ___ months after band removal for adequate bone remodeling, cessation of mobilities, and narrowing of PDLs
6 motnhs
do you make a maxillary or mandibular night guard to control parafunction?
maxillary
Crestal bone height was lower at the mesial and distal regions of the ( lateral incisor / premolar ) adjacent to the previously impacted canine,
and the roots of the treated canine and adjacent lateral incisor were ( thinner / shorter ) than those of the contralateral control teeth.
lateral incisor
shorter
