Test Questions Flashcards
Four types of post-eruption wear:
- Tooth-to-tooth
- External physical agents
- Chemical agents
- Tooth flexure
- Attrition
- Abrasion
- Erosion
- Abfraction
What specific effect could “high fever childhood” disease have on tooth development? Effects before 6mo vs. 3yo?
Neonatal rings on teeth; before 6mo, affects deciduous teeth and after 3yo, it will affect permanent dentition
Enamel defects in one permanent tooth due to periapical infection overlying deciduous tooth?
Turner’s tooth
Fluorisis occurs when fluoride is above what ppm in the drinking water?
4ppm
What is perimolysis?
Erosion of lingual aspect of teeth due to vomiting
Bright yellow fluorescence of teeth under UV light exposure occurs secondary to….
Tetracycline ingestion
The most common impacted posterior teeth are? Anterior teeth?
3rd molars; canines (maxillary then mand)
What are three risks for leaving third molars? Five risks of extracting third molars?
Leaving: crowding dentition, resorption of adjacent teeth, pathological infections/cysts/tumors
Removing: nerve damage, alveolitis, trismus, jaw fracture, TMJ problems, periodontal damage, injury to adjacent teeth
Fusion of a tooth to alveolar bone defines:
ankylosis
Tongue tied:
Ankyloglossia
Two syndromes ass’d w/ hypodontia? Hyperdontia?
Crouzan’s and ectodermal dysplasia
Hyper: Cleidocranial Dysplasia and Apert’s
Most common congenitally missing teeth are?
3rd molars (1,16,17 and 32)
The most commonly supernumerary tooth found is termed the?
Mesiodens
The union of two adjacent teeth via their cementum is termed:
concrescence
Describe the major difference between dens invaginatus and dens evaginatus. Where do they occur most commonly?
DE: the enamel misforms an accessory cusp (mand premolars)
DI: Enamel forms irregularly to create a hole in the tooth (max lateral incisors)
A patient presents w/ unusual translucent grayish discoloration of their teeth, bluish colored sclera and a history of multiple long bone fractures. You suspect they may have
Type I dentinogenesis imperfect (w/ osteogenesis imperfecta)
A tooth has a large carious lesion into the pulp and a unilocular radiolucency at the apex. Until a biopsy is performed, what entities are in your list of differential diagnoses (3)?
Radicular cyst, periapical granuloma, or apical scar
Plantar keratosis and aggressive periodontal disease best describes:
Papillion-Lefevre Syndrome
What tx would you provide a patient suffering from cervicofacial emphysema?
Broad spectrum antibiotics
A dome-shaped lesion of the sinus floor usually consisting of an inflammatory exudate and appearing as a faint radiopacity is called an?
Antral pseydocyst
Chemical injuries to the oral mucosa can be caused my many chemicals including (3)
gold salts, silver nitrate and hydrogen peroxide
Accumulation of lbood within tissue producing a mass is:
hematoma
What is the frequency of adverse effects of dental amalgam is estimated to be on case per:
1 million
Tx of angioedema?
Antihistamines
In Behcet’s syndrome, 99% of patients will have intraoral lesions. Where is the one other common site?
Genitals
Two substances that may cause an allergic mucosal reaction?
Cinnamon oil or latex
Radiographically, what does a dental granuloma look identical to?
Radicular cyst
Is the traumatic bone cyst a true cyst?
No, it is empty.
Which are more common: palatal or mandibular tori?
Palatal
Focal antral calcification is caused by a fungal ball of what organism?
Aspergillus fumagatum
What is the most common fungal infection in the U.S.? What environment is it ass’ed w/?
Histoplasmosis; humid areas near bird/bat excrement
A pt presents w/ white lesions appearing to be candidiasis. What is the most likely cause of this presentation?
Antibiotic administration
A mucus patch is ass’d w/ what disease?
Secondary syphilis
Patients with gonorrhea are at high risk for what other STD and are thus co-treated for both?
Chlamydia
How does TB infection vs. active TB disease present w/ regards to:
- Chest X-Ray
- Contagiousness
- PPD
General rule, they are all opposite except PPD
- +CXR for active disease
- Contagious if have active disease
- Both will have positive PPD test
Which disease causes deep abscesses, draining sinus tracts and yellow “sulfur granules?”
Actinomycosis
What disease is caused by Bartonella Henselae and ass’d w/ lymphadenopathy?
Cat Scratch Disease
What is one disease caused by the coxsackie virus?
Herpangina
Ramsay Hunt Syndrome is ass’d w/ which virus?
Herpes Zoster (Shingles)
What are the other names for Herpes 3? 4? 5? 8?
3: Zaricella zoster
4: EBV and 5: CMV
8: Kaposi’s Sarcoma
What disease/condition is ass’d w/ horn and pseudo-horn cysts? What are two other aspects?
Sebhorreic keratosis; stuck-on appearance, chronic sun exposure, Laser-Trelat sign
What is an ephelis?
Freckle
“Age spots” and “liver spots” ass’d w/ UV light damage are termed:
Actinic Lentigo
The mask of pregnancy?
Melasma
What do Peutz-Jaugars Syndrome, Addison’s disease and neurofibromatosis all have in common?
Produce pigmentation of the skin and oral mucosa
What histological finding change a diagnosis from carcinoma-in-situ to squamous cell carcinoma?
Lesion penetrates the basement membrane
What can you do clinically to show that a lesion of the cheek is leukoedema?
Invert the cheek; if leukoedema, the lesions will disappear
What is cheek biting?
Morsicatio buccarum
What percent of erythroplakia lesions of unknown cause are premalignant or malignant on biopsy?
80-90%
What virus is ass’d w/ nasopharyngeal carcinoma and Burkitt’s lymphoma/
Epstein-Barr Virus
Plummer-Vinson syndrome is ass’d w/ what deficiency?
Iron
In the staging of cancer, the T, N and M is used. For what does each mean?
T: Tumor size
N: Nodes found w/ cancer
M: metastases
How has the survival rate between white and black males differed since the 1950’s?
Black males have less access to medical care/insurance so their survival rate has decreased, whereas white males’ survival rate has increased.
What oral cancer has a possible association w/ HPV 16 and 18?
Verrocous carcinoma
When diagnosing melanoma, a number of critical findings are evaluated and given the headings “A, B, C, & D”. What does B&C stand for?
B: Border irregularity
C: Color variation
