Week 1 Flashcards
Alveolus
Bony socket, or portion of the alveolar process into which an individual tooth is set
Alveolar Process
entire bone entity which surrounds and supports all teeth in each jaw member
Pulp Cavity
entire internal cavity f a tooth which contains the pulp and consists of pulp canal, chamber, and horns
Pulp Canal
port of the pulp cavity which his located in the root of the tooth
Pulp Chamber
enlarged portion of pulp cavity which is found mostly in anatomical crown
Pulp Horns
usually pointed incisal or occlusal elongations of pulp chamber which often corresponds to cusps, or loves of teeth
Dentino-enamel junction DEJ
internal line meeting dentin and enamel
Anatomical vs clinical root
anatomical is covered in cementum and clinical is the portion not visible in the mouth
Anatomical vs clinical crown
anatomical is covered in enamel and clinical is the portion visible in the mouth
Line angle
when two surfaces of a tooth meet
Point angle
when three surfaces of a tooth meet
Pit
sharp pinpoint depression surface of enamel
Fossa
irregular depression or concavity on the surface of a tooth
Sulcus
long depression on the surface of a tooth
Groove
shallow linear depression on the surface of a tooth
developmental groove
shallow groove or line between the primary parts of the crown or root
Supplemental groove
less distant and does not mark the junction of primary parts
Lobe
primary sections of formation in development of crown (cusps, mamelons)
Triangular ridge
descends from the tips of the cusps of molars and premolars towards the center part of the occlusal surface
Transverse Ridge
A buccal and lingual triangular ridge combined, goes all the way across the tooth on just the mesial or just the distal
Oblique
ridge that crosses the occlusal of max molars (diagonal)
Cusp ridge
each cusp has 4 ridges extending in different directions M D F L. The ridge that goes towards the central groove is also a triangular ridge
Inclined planes
sloping areas found between two cusp ridges (named by combining two cusp ridges between which they lie)
Root divided in thirds
Apical, Middle, Cervical
Curve of Spee
curvature tip of canines follows buccal cusp tips of premolars and molars posteriorly from the facial. 2D, goes up from anterior to posterior. Max molar roots are inclined medially and mandibular roots distally
Curve of wilson
Medio-laterial curvature of occlusal plane (like biting a cookie, right angle to spee) Crowns of mand posterior teeth inclined lingual, max post buccal. Deeper and greater in posteriors.
Sphere of Monson
Combo of spee and wilson
Axial position
vertical axis
Axial root position of anterior maxillary teeth
Incisors: ML
Canine: DL
Axial root position of max PM
DL
Axial root position of max molars
ML
Axial root position of mand anteriors
incisor: ML
canine: DL
Axial root position of mand premolars
1st: DL
2nd: DB
Axial root position of mand molars
DB
Which teeth have a triangular shape from the MD view?
anteriors
Which teeth have a trapezoidal shape from the MD view?
Max Posterior teeth
Which teeth have a rhomboidal shape from the MD view?
Mand posterior teeth
Proximal Convexity
creates contacts (football player shoulders)
Importance of contacts
-arch stability
-prevent food impaction
-protect from perio disease
-prevents premature restorative failure
-prevents proximal caries
T or F: Contact area increases in size with age
True, broadens due to abrasion (proximal surfaces adjacent teeth rubbing against each other)
T or F: All contacts are in the middle 1/3 of the tooth and the same size throughout the mouth.
False, location of contacts start more incisal in the anterior and move more cervical posteriorly. They also get larger.
T or F: Mesial distal length of the dental arch stay the same over time.
False, the arch becomes shorter due to abrasive action. Teeth move mesial toward midline
Types of embrasures
View from FL: I/O and cerival
View from I/O: B and L
F and L Height on Contour
AKA Crest of Curvature, greatest area of contour inciso cervically on F and L surfaces. Seen from proximal aspect.
T or F: The height on contour may be in a different 1/3 of the tooth on different sides of the tooth
True, lingual tends to be more I/O in the posterior than the facial (middle 1/3 instead of cervical)
What happens with excessive height of contour?
food deflected away too much from gingiva, result in break down inadequate stimulation
What happens with insufficient height of contour?
gingiva not protected and injury, breakdown
Cervical Lines
stable entity, Line where enamel and cementum meet, cements-enamel junction.
T or F: The Gingival Line is an imaginary line which marks the level of termination of non-attached soft tissue surrounding the tooth
true
T or F Depth of cervical line curvature on any tooth is normally greater on the mesial as compared to the distal
True
T or F Cervical lines on proximal surfaces of adjacent teeth have similar depth of curvature
true
T or F Depth of Curvature of all surface in smallest on central incisors and increases posteriors
False, GREATEST on central incisors and DECREASES posteriorly
Which hepatitis has no vaccine but has a medical treatment/cure?
Hep C
How long should you clean your hands with soap or hand sanitizer?
15 seconds or until dry
uticaria
hives
erythema
redness
T or F Contact dermatitis is a delayed hypersensitivity
true, 6-72 hours after contact
What other dental products, other than gloves, can contain latex?
ambu bags, elastic waistbands and wristbands, mask/ear loops, nitrous masks, orthodontic elastics, rubber dams, prophy cups, syringe tips
T or F: A mask must be worn during any treatment when splatter or aerosol is created
True
T or F A complete face shield protects from splatter but not aerosols
True
T or F A face shield must be cleaned between each patient
True
Protective eyewear does not need side shields when an aerosol is being produced
False
Signs are required anywhere lasers are in use
True
Contaminated reusable clothing cannot be laundered at home
true, must be by professional cleaner or in the office
Protective clothing should be changed between patients and can be worn throughout the office
FALSE, changed daily and only worn in clinical area
Which type of virus is harder to kill: lipophilic or hydrophilic
hydrophilic because they are coated in a protein that protects them
Biological testing of the sterilizer must be done when?
Once a week or whenever an implant is sterilized
T or F dentinal bonding agents are flammable
True
Conditions that predispose you to latex allergy
spina bifida, urogenital anomalies, allergies to avocado kiwi nuts bananas
Hepatitis that is fecal-oral
Hep A, can also be drug use, sex, or transfusion
T or F Hep A vaccine can be administered after exposure
True, within 2 weeks post exposure
How long hep B can survive outside the body
7 days and up to a month in the right conditions
T or F Hep C is not transmitted efficiently through occupational exposure to blood
True
How long is HIV effective outside the body?
Once dried only within a few hours becomes very ineffective
Alcohol based gels must be at least ____ ethyl alcohol for cleaning your hands
62%
T or F Isopropanol is more effective than ethyl alcohol
FALSE, ethyl alcohol is more effective
