Handbook 9 Trauma Flashcards
What % of treacher collins syndrome patients have cleft palate?
30%
also called mandibulofacial dysostosis
T/F: Teeth treated with apexification often are prone to fracture. One of the disadvantages of this treatment is the duration of the treatment which lasts many months
True
A patient presents with multiple periapical granulomas and cysts. What is your diagnosis?
Dentin dysplasia type 1
Bohns noduls: location and what are they a remnant of?
occur on junction of hard and soft palate; remnants of minor salivary glands
What stage of morphological development is interrupted for AI hypoplastic type?
Histodifferentiation (also DI)
When occurs from 5 months in utero to 10 months post-natal?
initiation of accessional dentition
What is the length of time for root completion of permanent teeth?
3 years post eruption
Three items in the Pierre Robin sequence
1) Micrognathia
2) Glossoptosis
3) CL/CP
12-25% have heart disease
Hanks solution, milk, saline, are good storage mediums for avulsed teeth. Why is water NOT a good storage medium?
Because water is hypotonic, its use leads to rapid cell lysis and increased inflammation on replantation
What is another name of mandibulofacial dysostosis?
Treacher Collins Syndrome
1st branchial arch, pouch, groove, hypoplastic mandible
30% have cleft palate
Craniosynostosis: which of the following is not in the family of craniosynostosis?
a) Apert
b) Crouzon
c) Pfeiffer
d) Carpenter
e) Achondroplasia
e) Achrondroplasia
(defect in ENDOCHONDRAL ossification)
Note: posterior natal/neonatal teeth associated with Pfieffer, histiocytosis X
In a patient with a permanent tooth with closed apex that has an extrusive luxation, what is the treatment?
Ca(OH)2 pulpectomy within 2 weeks then endodontic therapy if the apex is closed. IF the apex is open, chlorhexidine, analgesics, do not prove area for 4 weeks, f/u in 2 weeks. Monitor for pathology
Internal resorption is a destructive process generally believed to be caused by what?
odontoclastic action
Error in what morphological developmental stage results in enamel pearls, hypercementosis, enamel hypoplasia, and dentin dysplasia?
Apposition
The crowns of teeth that have undergone this reaction may have a yellowish- opaque color
Calcific metamorphosis/ Although the radiograph may give the illusion of complete obliteration, an extremely fine root canal and remnants of the pulp will persist. Monitor primary teeth, however consider permanent teeth with calcific metamorphisis a potential focus of infection and also monitor. Note: 35-50% of luxated primary teeth develop a yellowish hue from pulp canal obliteration
Define overweight and obese in terms of percentages
OW x>85%
OB x>95%
What is the frequency of occurrence of seizures to be considered epilepsy?
3 or more recurrent seizures
What is the term for an indentation of bone containing the submandibular gland?
Stafne bone defect
occurs in adolescent males, cyst-like radiolucency in posterior mandible, submandibular fossa. Not an actual cyst
Who is susceptible to MH?
Duchenne’s, Mitochondrial disorders
T/F: Visible plaque on maxillary anterior teeth is one of the best predictors of future caries
True
4 months in utero for permanent 1st molar, one year of age for permanent 2nd molar, and ____ for third molar
age 4-5
35-50% of luxated primary teeth develop a yellowish hue from pulp canal obliteration from what injury?
Luxation
T/F: 2-3 weeks after an injury when internal hemorrhage occurs, discoloration may be evident
True, 35% will NOT be necrotic
T/F: Davis and Vogel emphasized that a force strong enough to fracture, intrude, or avulse a tooth is also strong enough to result in cervical spine or intracranial injury
True
What is an ellis class IV fracture?
Loss of the entire crown
T/F: Calcium hydroxide is an antibacterial agent
True
What is the length of time for root completion of primary teeth?
18 months post eruption
Dental lamina differentiates from what layer of the oral epithelium?
basal layer
T/F: permanent maxillary lateral incisors begin to calcify at 10-12 months. All other permanent incisors (all centrals and mandibular laterals) begin to calcify at 3-4 months
True
Dental lamina begins to develop at 6 weeks of embryonic age. What develops from the dental lamina?
Tooth buds (organ, papilla, sac)
T/F: Avulsion injuries are 3x more frequent in boys than in girls and occur most commonly in children 7-9 years of age when permanent incisors are erupting
True
T/F: Status epilepticus is a seizure lasting more than 30 minutes
True
What is the order of mineralization of primary teeth?
A, D, B, C, E
Status epilepticus is a seizure lasting more than ___ minutes
30 minutes
T/F: When the child who has had the primary immunization receives an injury from an object that is likely to have been contaminated, the antibody-forming mechanism may be activated with a booster injection of toxoid. An unimmunized child can be protected through passive immunization or serotherapy with tetanus antitoxin (tetanus immune globulin or TIG)
True
What is a Cvek pulpotomy?
Partial pulpotomy for traumatic exposures (Cvek) 1-3 mm or deeper until healthy pulp is reached. Chlorhexidine or NaOCl to disinfect/control bleeding. Apply MTA at least 1.5 mm thick (biocompatible, dentin bridge) and cover with RMGI
Organogenesis takes place on days __ to ____ of intrauterine life
25-28
What order is the mineralization of the cusps?
MB, ML, DB, DL
T/F: one out of every two children sustains a dental injury, most often between the ages of 8 and 12
True
Which of the following is not a cause of CL/CP?
a) Environmental causes
b) Maternal alcohol use
c) Maternal cigarette use
d) Folate acid deficiency
e) Corticosteroid use
f) Anticonvulsant drugs
g) Benadryl
g) Benadryl
Can internally resorbing teeth ever be treated endodontically?
Yes
How long does a febrile seizure normally last?
less than 5 minutes
Child’s temp usually greater than 100.4F, 38C
may become incontinent (wet or soil themselves); they may also vomit or have increased secretions (foam at the mouth)
What is the most common generalized-convulsive or non-convulsive seizure?
Grand Mal
40% of seizures are common generalized-convulsive or non-convulsive
LOC, absence seizures, abrupt onset
Neural crest cells: develop from ectoderm along the lateral margins of neural plate. They are responsible for all the following except:
a) Enamel
b) Bone
c) Cartilage
d) Dentin
e) Dermis
a) Enamel
What is the length of time between crown completion and eruption to full occlusion in permanent teeth?
5 years
Dentin, dermis, bone cartilage all develop from what?
Neural crest cells (ectoderm)
Dental laminar cyst: location and what are they a remnant of?
occur on alveolar crest, remnants of dental lamina (gingival cyst of the newborn)
When does initiation of the succedaneous dentition begin in utero?
2 months in utero
BQ: When do permanent maxillary lateral incisors begin to calcify?
10-12 months
all other permanent incisors (all centrals and mandibular laterals) begin to calcify at 3-4 months
BQ: T/F: fluorosis is an example of deficient mineralization. Sclerotic dentin is an example of excessive development
True
What is an ellis class III fracture?
Extensive fracture of the crown with an exposure of the dental pulp
What are three components of the tooth bud?
Enamel organ (epithelium), dental papilla, dental sac
READ:
Davis recommends a quick cranial nerve evaluation involving the following four areas: Extraocular muscles are intact and functioning appropriately; that is, the patient can track a finger moving vertically and horizontally through the visual field with the eyes remaining in tandem. Pupils are equal, round, and reactive to light with accommodation. Sensory function is normal as measured through light contact to various areas of the face. Symmetry of motor function is present, as assessed by having the patient frown, smile, move the tongue, and perform several voluntary muscular movements
T/F: Natal teeth is due to proliferation, NEOnatal teeth is due to an error in eruption
True
What stage of morphological development is interrupted for AI-hypocalcified type, interlobular dentin, fluorosis (insufficient), scerltoci dentin (excessive)
Mineralization
Internal resorption when detected early enough can be possibly treated in order to gain retention with what treatment?
endodontic therapy
T/F: Discoloration that becomes evident for the first time months or years after an accident is evidence of a necrotic pulp
True
Epstein pearls: location and what are they a remnant of?
Palatal midline, epithelial inclusion cysts
