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NBDE part 2 misc
| Question | Answer |
|---|---|
| what is eruption sequestrum? | small spicule that extrudes with an erupting molar (no Tx) |
| what are examples of dens evaginatus? | cusp of carabelli and talon's cusp |
| what is gemination? tooth count affected? | 1 root and a very large or 2 fused crowns; tooth count is normal |
| what is fusion? teeth count affected? | 2 roots fused at the dentin into a single wide crown; less teeth |
| 3 types of amelogenesis imperfecta are | hypoplastic (enamel matrix), hypocalcified, hypomaturation |
| what are clinical features of hypoplastic A.I.? | enamel is thinner, but of normal density (might appear pitted) |
| what are clinical features of hypocalcified A.I.? | normal thickness enamel, but less radiodense, weak, easily chipped |
| what are clinical features of hypomaturation A.I.? | normal thickness and radiodensity, but not normal hardness and translucency! |
| snow-capped teeth is an example of____? | mildest form of hypomaturation A.I. |
| If you can pierce enamel with explorer, what is the most likely diagnosis? | hypomaturation type of A.I. |
| what is dentinogenesis imperfecta? | heredit, opalescent teeth, underminer dentin, obliterated pulp, constricted crowns |
| What is typical for D.D. type II? | coronal type, will see pulpal calcifications |
| Describe D.D. type I | radicular type, teeth look normal, roots are short, W-shaped, PARLs (non-carious) |
| What is the etiology for Stevens-Jones in adults/kids? | adults: drugs + malignancies, kids - infection |
| Post-OS pt presents with a hard, purple lump im his jaw, yellowish granules presemt. what? | actinomycosis (A. israellii) |
| what's the hallmark of actinomycosis? how do u tx it? | sulfur granules, long-term Ab |
| what is the most infective stage of syphilis? | 2 (maculopapular rash, condyloma lata) |
| 2 cm smooth mass in the midpost dorsum of tongue. What could it be? | lingual thyroid nodule |
| The Waldeyer ring consists of: | palatine, pharyngeal and lingual tonsils |
| Where would u see retrocuspid papilla? | mandible, behind canines, btwn marginal gingiva and MGJ |
| Where would you expect to find dermoid cyst? | young adults, at the midline of the neck |
| what are the 4 zones found in enamel caries? | surface zone, body, dark zone, translucent zone |
| what are the 5 zones found in dentin caries after cavitation? | brown-deminer-translucent-fatty degeneration-reparative dentin |
| What happens in the fatty degeneration zone? | bact enzymes (ahead of bacteria) cause breakdown of cells in tubules releasing lipid |
| What happens in the translucent zone? | sclerosis of tubules (salts from the deminer zone are deposited here) |
| What is in the brown discoloration zone? | tubules packed with bacteria, reduced mineral [] |
| Which zone of caries doesnt have any mineral component left? | cavitation |
| Median rhomboid glossitis is caused by ____ | chronic fungal infection |
| which papilla is missing in geo tongue syndrome? | filiform |
| What is the most common non-odontogenic cyst? | naso-palatine duct aka incisive canal cyst |
| temp and time needed for chemical vapor sterilization? | 270F and 20-40 min |
| temp and time for autoclave? | 250F, 15 - 20min |
| temp and time for dry heat sterilization | 320F, 2 hrs |
| How does dry heat kill bacteria? | coagulation of proteins |
| time for 2% of glutaraldehyde? | 10 hrs |
| What's the UCR 3rd party reimb? | dentist gets paid his usual fee as long as it's reasonable |
| What's the table of allowance type of 3rd party reim? | 3rd party decides how much to pay for dental work (the difference might be picked up by pt) |
| What's fee schedule 3rd party reimb? | dentist agrees to collect certain fees paid in full by insurance (Medicaid) |
| What's capitation plan like? | dentist paid fixed amount monthly and agrees to cover assigned pts |
| What's reduced fee for service? | dentist agrees to charge less than other practices in the area (PPO) |
| which odontogenic tumor might be confused with hyperparathyroism? | giant cell granuloma |
| When you see lesion resorbing roots think - | b9 but aggressive (CGCC, ameloblastoma) |
| What tumor has "honeycomb" x-ray appearance? | myxoma |
| Cementoblastoma might be confused with___ | Paget's disease |
| ____ odontoma = miniature multiple teeth | compound |
| ____ odontoma = amorphous conglomerate of calcified tissue | complex |
| What's the Commonest odontogenic tumor ? | odontoma |
| Dentigerous cyst develops from____ | Epi cell rests |
| which tumors grows by hyperosmolality and bone resorption not expansion? | OKC aka KCOT |
| Which keratin does OKC have? | PARAkeratin (which recurs unlike orthokeratin) |
| where would u look for Staphne’s Bone Cyst ? | below IAN |
| Which disease causes diffuse widening of PDL + ramus resorption? | Scleroderma |
| Lesion below a tooth that pushes the tooth up | think lymphoma |
| Binuclear Reed-Sternberg cells malignant,large found in ___ | Hodgkin's disease |
| when do pem teeth start to calcify and what's the sequence | at birth, every 6 mo - 1M - ant teeth - Max LI - 1PM - 2PM - 2M |
| how many years it takes for a crown to form? | 4-5 years (6 for canine and 3 for 1M) |
| how many years from start of crown calcification for finished root? | 10 years, except canine (13) |
| Teeth usually erupt thru the bone when root is ___ | 2/3 formed |
| Teeth usually erupt thru the gingiva when root is | 3/4 formed |
| eruption to completed root formation | 3 years |
| 3 most commonly congenitally missing teeth? (except 3M) | Mand 2PM - Max LI - Max 2PM |
| While taking Pan, ala-tragus line should be ___ while Frankfort plane__ | ala-tragus: sloping 10 degrees down, Frankfort - parallel to the floor |
| Landmarks for Frankfort plane are | Upper border of IAM and lower orbitus |
| What's van der Woude syndrome? | lip pits + cleft palate |
| Characteristics of PJ syndrome | lip freckling, polyps in small lintestine |
| Characteristics of Pierre Robin syndrome? | severe micrognathia, glossoptosis and cleft palate |
| the most serious complication of Ludwig's angine | edema of the glottis (cant breathe) |
Created by:
fufik