Term
| which of the following can be visualized on the radiographs? |
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Definition
|
|
Term
| which of the following is/are considered as a definite sign of active periodontal disease? |
|
Definition
| loss of definition of crestal lamina dura |
|
|
Term
| which of the following CEJ-crest distances is considered abnormal horizontal bone levels? |
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Definition
|
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Term
| the bony cortives of sinus walls, nasal cavity borders and tooth follicles may appear with a similar border thus confusing the radiographic diagnosis (T/F) |
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Definition
|
|
Term
| the recommended radiographic view to best detect interproximal caries is: |
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Definition
|
|
Term
| which of the followings type of liesions have more potentials to cause thinning and expansion of the bone cortex? |
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Definition
| slow growing benign cyst or tumor |
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Term
| which of the followings usually produces a periapical radiolucency with well-defnied border |
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Definition
| a periapical cyst larger than 1 cm |
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Term
| which of the following usu causes root resorption |
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Definition
| none of the above (all the slow growing benign cysts or tumor, most of the jawbone infections, most of the malignant lesions) |
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Term
| which of the followings can cause tooth exfoliation |
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Definition
| peridontal dx, jawbone infection, malignant lestions |
|
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Term
| which of the followings can produce punched-out lesions in the bone? |
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Definition
| multiple myeloma, langerhans cell histiocytosis, metastatic malignant lesions |
|
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Term
| which of the following lesions has more potential to cause migration of the adjacent tooth to a distant area? |
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Definition
| a pericoronal cyst or tumor larger than 2 cm associated with an impacted 3rd molar in a 25yr old patient |
|
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Term
| which of the following lesions has more potential to cause migration of the adjacent tooth to a distant area? |
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Definition
| a pericoronal cyst or tumor larger than 2 cm associated with an impacted 3rd molar in a 25 yrrs old patient |
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Term
| which of the following lesions usually causes pain in the jawbone? |
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Definition
| rapidly growing malignant lesions growing inside the bone, jawbone injection especially acute type, paget's dx (NOT slow growing benign cysts,) |
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Term
| which of the following conditinos can cause lip paresthesias? |
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Definition
| malignant lesions located in the body of the mandible (NOT slow growing cysts) |
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Term
| which of the following procedures is contraindicated when we are dealing with a vascular lesion? |
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Definition
| taking a biopsy from the lesion carefully (use should take a radiograph and evaluate it clinically) |
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Term
| what lesions produces a radiopaque shadow surrounded by a radiolucent band? |
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Definition
| fibro-osseous lesions, odontomas, an impacted tooth, sequestrated bone in osteomyelitis |
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Term
| (T/F) caries is clearly visualized on the radiographic film/imager as soon as 20-25% the minerals content of the hard dental tissues is lost (demin) |
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Definition
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Term
| the size of the carious lesions is usu underestimated (visualized smaller than its true clinical size) on the radiograph |
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Definition
|
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Term
| Mack band effect is an optic illusion that appears when two structures with similar densities (gray shades) are located adjacent to each other) |
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Definition
|
|
Term
| mack-band shadow usually produces a more diffuse margin on the radiograph compared with shadow of caries |
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Definition
|
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Term
| visualization of dental caries on the radiograph requires using appropriate imaging technique with proper setting of exposure factors |
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Definition
|
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Term
| the effect of using proper exposure setting for clear visualization of interproximal caries is as important as adjustment of horizontal and vertical angles of the projecting x-ray |
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Definition
|
|
Term
| the border of caries on a radiograph appears sharper than the border of mechanically prepared cavities |
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Definition
|
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Term
| incipient caries is observed as a small triangular or cone-shaped radiolucency in the outer layer of the enamel surface. it usually does not need to be restored but follow-up and keeping good oral hygiene is necessary to arrest or re-mineralize the lesion |
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Definition
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|
Term
| the shadow of carious lesions located on the lingual surface of the teeth are usually less distinct and are barely visible on the radiograph bc they are farther away from the x-ray source and are located closer to the film or imager |
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Definition
|
|
Term
| the shadow of attrition and abrasion of teeth appear with a more deifned margin on the radiograph compared with caries |
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Definition
|
|
Term
| observation of the shadow of a buccal or lingual caries on the pulp chamber is indicative of pulp exposure by caries |
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Definition
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|
Term
| multiple cervical caries is more commonly observed in patients with periodontal disease, xerotomia or immunocompromised condition |
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Definition
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|
Term
| cervical burnout usually appears as a triangular, wedge-shaped radiolucency and sometimes as a band of radiolucency across the cervical neck of the teeth. it can be mistaken with cervical caries |
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Definition
|
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Term
| internal resoption on the radiograph appears as a localized balloning of the canal producing a round or ovoid radiolucency in the canal. it only occurs when the involved tooth has lost its supporting bone. |
|
Definition
| second statement F, first is T |
|
|
Term
| what is considered as an etiologic factor in formation of periodontal dx? |
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Definition
|
|
Term
| what are limitations of dental radiographs in evaluation of periodontal dx? |
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Definition
| radiographs are 2d images representing 3d structures, radiographs do not show the depth of the periodontal pockets, radiographs do not show the whole architecture of the periodontal defects, any changein angulation and exposure factors can affect visualization of perio defects on the radiographs |
|
|
Term
| which radiographraphic techniques are definitely required for evaluation of periodontal dx with mild bone loss? |
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Definition
| periapical radiograph with paralleling technique and regular bitewing radiographs. (not vertical BW, periapical with bisecting or occlusal radiogrpahs) |
|
|
Term
| which radio technique is more reliable for eval of perio dx with servre bone loss extending to the apex? |
|
Definition
| periapical radiograph with paralleling technique |
|
|
Term
| which of the followings is/are considered as a definite sign(s) of active periodontal dx? |
|
Definition
| loss of definition of crestal lamina dura |
|
|
Term
| subgingal calculus usually has what kind of shape? |
|
Definition
|
|
Term
| a patient presented with difficulty in opening of the mouth due to loss of elasticity of tissues. the patient also has mask-face and fish-mouth appearance and has presented with widening of the PDL space in multiple teeth. if teeth demonstrate a crown-root ratio of 1:2 with no evidence of premature conetact or history of hyperfunction or TMJ disorder, the condition is most probably induced by |
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Definition
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|
Term
| which of the following conditions can cause the most rapid bilateral exfoliation of the involved teeth? |
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Definition
|
|
Term
| an aymptomatic round radiolucent shadow larger than 1 cm in diameter with well-defined border is observed at the apex of mandibular premolar-molar area. which of the following is corret about this shadow? |
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Definition
| it can be an odontogenic or non-odontogenic cyst or tumor |
|
|
Term
| which of the followings is the most possible cause of a 5x5 mm obvious periapical radiolucency assoc with a nonvital, tender and painful tooth when there is a clinical evidence of a gingival swelling adjacent to the involved tooth? |
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Definition
| phoneix abscess- acute infection superimposed on a chronic periapical lesion) |
|
|
Term
| in which of the following pts or conditions a simple periapical abscess may develop to an osteomyelitis of the jawbone? |
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Definition
| pt with hx of jaw radition therapy, immunocompromised pts, diabetic pts, pt with fractured jaw, pt with a large fibro-osseous lesion in the jaw bone |
|
|
Term
| multiple small periapical radiolucencies observed at the apex of vital mandibular anterior region of a 40 yr old african american woman is most probably? |
|
Definition
| periapical cemental dysplasia stage 1 |
|
|
Term
| in diagnosis of which of the following dental pulp diseases clinical info are more important than radiological evaluation of the periapical area? |
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Definition
| pulpitis, pulp necrosis, acute apical periodontitis |
|
|
Term
| which of the followings can be considered as radiographic sign of chronic osteomyelitis of the jawbone? |
|
Definition
| sequestration of bone, worm-eaten and moth-eaten shadows |
|
|
Term
| which is usu a circumscribed lesion with a corticated border? |
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Definition
|
|
Term
| which of the following usu appears with a more relative radiolucency and a thicker corticated border than a cyst and why? |
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Definition
| surgical defect bc the cortical plate of both sides of the bone are perforated |
|
|
Term
| which of the following may appear as a periapical radiolucency? |
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Definition
| a malignant tumor, a vascular lesion, a large marrow space located in the periapical area, a nutrient canal, and an osteoporotic area |
|
|
Term
| chronic periapical abscess differs from an acute periapical abscess in |
|
Definition
| clinical signs and symptoms suck as severity of pain and tenderness of the tooth, radiographic features such as size and relative radiolucency of the shadow. presence or abscenr of a sinus tract |
|
|
Term
| dentigenous cyst with OKC comparision, whats true? |
|
Definition
| dentogenerous cyst is always associated with an impactd tooth while OKC appear as an eneloping pericoronal radiolucency, dentigenous cycst can cause root resoption in 40-50% of cases while OKC usu does NOT cause root resorption and dentigerous cyst usu contains cystic fluid with regular consistency while OKC may have cystic fluid with a thicker consistency due to presence of excessive keratin layer formation |
|
|
Term
| which of the following is more compatible with radiological characteristics of a dentigerous cyst compared with odontogenic adenomatoid tumor? |
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Definition
| a pericoronal radiolucency causing resorption of the roots of the adjacent teeth |
|
|
Term
| which of the followings is correct about OKC |
|
Definition
| it may be associated with basal cell nevus syndrome |
|
|
Term
| which is a feature of traumatic bony cyst? |
|
Definition
| scalloping btwn the roots of the adjacent teeth producing a saw-tooth appearance |
|
|
Term
| which of the followings can be a sign of basal cell nevus syndrome? (also called gorlin syndrome) |
|
Definition
| skeletal deformities such as bifid rib and kyphosis, presence of pigmentations in the skin, presence of multiple keratocytes in the jawbone |
|
|
Term
| which of the followings is correct about bone concavity of stafne? |
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Definition
| on quiz was none of the above (choices were appears as PA radiolucency, dev bone depression in the eternal (lateral) surf of the angle of the mandible, and it usu cause expansion of the cortical bone) |
|
|
Term
| which cyst always appear in a specific location in the maxillary bone? |
|
Definition
|
|
Term
|
Definition
| solitary (traumatic) bone cyst |
|
|
Term
| which 2 cysts CANNOT be differentiated from one another by a CT scan? |
|
Definition
| lateral periodontal cyst from a small OKC |
|
|
Term
| a multiocular radiolucent lesion has caused resorption of the adjacent teeth. if the lesion yields a cystic fluid upon aspiration, which is the most possible diagnosis? |
|
Definition
| unicystic ameloblastoma arising in an OKC |
|
|
Term
| lesion biopsied and diagnosesed as CGCG. labs show inc Ca2+ and dec in serum phosphorus, which condition is more prob responsible for dev this lesion? |
|
Definition
|
|
Term
| 30-40% bone loss in the mand anterior regiong corresponds to |
|
Definition
| 15-50% is moderate horizontal loss |
|
|
Term
| in addition to exfoliation of the teeth, several punched out lesions were detected on the skull radiographs. diagnosis? |
|
Definition
| Hand Shuller christian dx (Langerhans' cell histiocytosis) |
|
|
Term
| pt has periapical radioluc and severe pain and tooth doesnt respond to percussion and palpation.. diagnosis? |
|
Definition
|
|
Term
| pericoronal radiolucency with well-defined border causing resorption of the roots of the max central incisors. diagnosis if straw-colored fluid was obtained upon aspiration? |
|
Definition
| dentigerous cyst (has root resorb too) |
|
|
Term
| bony cortices of sinus walls, nasal cavity borders and tooth follicles may appear with a similar border thus confusing the radiographic diagnosis (t/f) |
|
Definition
|
|
Term
| recommended radiographic view to best detect interprox caries is |
|
Definition
|
|
Term
| which are correct about cementoblastoma? |
|
Definition
| on quiz was ALL: it is a neoplastic lesion arising from dental root cementum, it is fused to the root of the involved tooth, it usu appear in mandibular premolar-molar area |
|
|
Term
| which dx usu appear with a higher relative radiopacity on the radiograph? |
|
Definition
|
|
Term
| paget's dx at very eary or initial stages may produce the following bone changes: |
|
Definition
| osteoporosis or bone rarefaction in the skull bone which may be mistaken with osteoporosis induced by other dx |
|
|
Term
| in which of the following conditions multiple small denticles (v small mini teeth) are noted inside the lesion? |
|
Definition
|
|
Term
| which of the following radiopague lesions have shown to have some tendency for malignant transformation? |
|
Definition
| Fibrous dysplasia and Pagets. (NOT periap cem dysplasia, florid osseous dysplasia or exostosis) |
|
|
Term
| in hypoplastic type of amelogenesis imperfecta: |
|
Definition
| the thickness of enamel is reduced but the tooth usu has a smooth surface and the tooth is not strong enough to withstand occlusal forces and consequently may undergo rapid attrition |
|
|
Term
| which of the following is NOT correct about dentigenesis imperf type 1? |
|
Definition
| the teeth are usu rootless. (correct-teeth demonstrate obliteration of pulp chamber and canals, usu have bulbous crown and inc cervical constriction as well as slender roots, and the pt may have blue sclera) |
|
|
Term
| which is part of Gardner's syndrome? |
|
Definition
| multiple osteomas involving the jaw and skull bone, multiple supernumeraries, and multiple intestinal polyposis (NOT kyphosis or abs of clavivle) |
|
|
Term
| ghost-teeth is applied to those teeth which usu demonstrate a shell of enamel with incomplete or lack of development of other dental structures. this dental anomaly is also called |
|
Definition
|
|
Term
| which of the following is NOT correct about taurodontism? |
|
Definition
| the teeth have large pulp chamber (usu demonstrating longitudinal englargement of the pulp) |
|
|
Term
| some features on taurodontism: |
|
Definition
| teeth demonstrate dec cervial constrction, anomaly usu causes an overall dec in the length of the teeth, fucation of the teeth is location more apically than normal teeth, teeth look rectangualr, large pulp chambers along the VERTICAL axis |
|
|
Term
| eg of what can appear as PA radiolucency? |
|
Definition
| malignant tumor, vascular lesion, large marrow space located in the PA area, an osteoporotic area |
|
|
Term
| which of the following conditions can cause enlargement of the bone marrow spaces and loss of bone trabecular leading to generalized rarefaction and expansion of the jawbone? |
|
Definition
|
|
Term
|
Definition
|
|
Term
| radio findings w hyperparathyroidism? |
|
Definition
| presence of generalized loss of bone density, loss of definition of lamina dura and cortiacl bone outlining normal landmarks, presence of a giant cell granuloma in the jawbone |
|
|
Term
| diff diagnosis if see mixed radiolucent/opaque shadow causing resorption of the root of the adjacent teeth in a 14 yr old pt |
|
Definition
| ameloblastoma in an odontoma |
|
|
Term
| sign of presence of an arterio-venous malformation in the jawbone? |
|
Definition
| radiolucent area in the jawbone with cart-wheel or sunray appearance, evidence of pumping teeth or a pulsatile swelling in oral cavity, presence of dilated vessels with strong bruit sign |
|
|
Term
| useful diff diagnosis of AOT from dentigerous cyst? |
|
Definition
| presence of calcified foci in the lesion |
|
|
Term
| which condition causes the most rapid bilateral exfoliation of the involved teeth? |
|
Definition
|
|
Term
| a well defined periapical radiolucency larger than 1 cm in diameter located in madibular premolar-molar area |
|
Definition
| can be an odontogenic or non-odontogenic cyst or tumor |
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|
