An endodontic therapy was completed on a tooth with a periapical radiolucency. Marked reduction in size of radiolucency is expected in approximately: A. One year B. 6 months C. 3 months

An endodontic therapy was completed on a tooth with a periapical radiolucency. Marked reduction in  size of radiolucency is expected in approximately:
A. One year
B. 6 months
C. 3 months
by

1 Answer

Answer :

A. One year
by

Related questions

How long would it take to notice significant reduction in radiolucency after finishing a root filling in a tooth with a periapical lesion: A. 6 months B. 1 month C. 3 months

Description : How long would it take to notice significant reduction in radiolucency after finishing a root filling in a tooth with a periapical lesion: A. 6 months B. 1 month C. 3 months

Last Answer : A. 6 months

The lamina dura is seen on periapical radiographs as:CHECK A. Usual radiolucency between tooth root and surrounding bone as a thin white line. B. Cribriform plate of bone making the tooth socket C. Dense crestal bone consistent with a healthy periodontal status D. Pattern of radiopaque lines in supporting alveolar bone

Description : The lamina dura is seen on periapical radiographs as:CHECK A. Usual radiolucency between tooth root and surrounding bone as a thin white line. B. Cribriform plate of bone making the ... bone consistent with a healthy periodontal status D. Pattern of radiopaque lines in supporting alveolar bone

Last Answer : B. Cribriform plate of bone making the tooth socket

X rays are used in endodontic treatment to: A. Aid in the diagnosis of periapical hard tissue lesion B. Determine the number, location, shape, size and direction of roots and root canals C. Confirm the length of root canals D. Evaluate the adequacy of the complete root canal filling E. All of the above

Description : X rays are used in endodontic treatment to: A. Aid in the diagnosis of periapical hard tissue lesion B. Determine the number, location, shape, size and direction of roots and root canals C. Confirm ... root canals D. Evaluate the adequacy of the complete root canal filling E. All of the above

Last Answer : E. All of the above

Two central incisors on a radiograph are showing with what looks like eye drop radiolucency. You decided to start endodontic treatment on these teeth but when you tried to open access to the root canal you find clearly closed orifices with what look like secondary dentine. What is your initial management? A. Leave as it and start a permanent restoration. B. Start systemic antibiotic C. Try to ream and file canals

Description : Two central incisors on a radiograph are showing with what looks like eye drop radiolucency. You decided to start endodontic treatment on these teeth but when you tried to open access to the root ... and start a permanent restoration. B. Start systemic antibiotic C. Try to ream and file canals

Last Answer : C. Try to ream and file canals

The concomitant perio-periapical lesion as the cause of endodontic failure: A. Cannot be discovered prior to endo treatment B. May be discovered prior to endo treatment C. Is most commonly found in maxillary teeth D. Is most commonly found in mandibular teeth E. None of the above

Description : The concomitant perio-periapical lesion as the cause of endodontic failure: A. Cannot be discovered prior to endo treatment B. May be discovered prior to endo treatment C. Is most commonly found in maxillary teeth D. Is most commonly found in mandibular teeth E. None of the above

Last Answer : B. May be discovered prior to endo treatment

What indicates for a periapical surgery: A. Where performing an endodontic treatment on existing root canal filling may lead to fracture of the root B. When root canal treatment is faulty C. When there is danger of involving other structures D. When the bony defect is so extensive that the edges of the incisors will collapse E. None of the above

Description : What indicates for a periapical surgery: A. Where performing an endodontic treatment on existing root canal filling may lead to fracture of the root B. When root canal treatment is faulty C. When ... bony defect is so extensive that the edges of the incisors will collapse E. None of the above

Last Answer : A. Where performing an endodontic treatment on existing root canal filling may lead to fracture of the root

A child with a fracture of a tooth at the apical third of the root, what would be your first decision: A. Wait and recall after one month and observe for any necrotic or radiolucency B. Root canal treatment C. Extraction D. Apiectomy

Description : A child with a fracture of a tooth at the apical third of the root, what would be your first decision: A. Wait and recall after one month and observe for any necrotic or radiolucency B. Root canal treatment C. Extraction D. Apiectomy

Last Answer : A. Wait and recall after one month and observe for any necrotic or radiolucency

An upper deciduous molar has a caries exposure and on X ray the corresponding 2nd permanent premolar is absent. What treatment would you do to the deciduous tooth: A. Pulpotomy B. Endodontic treatment C. Pulp capping

Description : An upper deciduous molar has a caries exposure and on X ray the corresponding 2nd permanent premolar is absent. What treatment would you do to the deciduous tooth: A. Pulpotomy B. Endodontic treatment C. Pulp capping

Last Answer : B. Endodontic treatment

cyst at the apex of an upper central incisor measuring 1 cm in diameter is visualized in radiograph and confirmed by aspiration biopsy; which method of treatment would you consider?** A. Extraction of the central incisor and retrieving the cyst through the socket B. Exteriorizing the cyst through the buccal bone and mucosa C. Making a mucoperiosteal flap and removing the cyst through an opening made in the alveolar bone, followed by tooth removal. D. Making a mucoperiosteal flap and removing the cyst through an opening made in the alveolar bone, followed by endodontic treatment. E. Routine orthograde endodontic treatment followed by observation.

Description : cyst at the apex of an upper central incisor measuring 1 cm in diameter is visualized in radiograph and confirmed by aspiration biopsy; which method of treatment would you consider?** ... bone, followed by endodontic treatment. E. Routine orthograde endodontic treatment followed by observation.

Last Answer : D. Making a mucoperiosteal flap and removing the cyst through an opening made in the alveolar bone, followed by endodontic treatment.

Following trauma to tooth, the next day there was no response to pulp tests you should?* A. Review again later B. Start endodontic treatment C. Extraction of tooth

Description : Following trauma to tooth, the next day there was no response to pulp tests you should?* A. Review again later B. Start endodontic treatment C. Extraction of tooth

Last Answer : A. Review again later

In a vital pulp therapy, what is the optimum depth for a pin hole in a tooth: A. 4-5mm B. Approximately 2mm C. Less than 2mm D. 1-1.5mm

Description : In a vital pulp therapy, what is the optimum depth for a pin hole in a tooth: A. 4-5mm B. Approximately 2mm C. Less than 2mm D. 1-1.5mm

Last Answer : A. 4-5mm

The prognosis of teeth with apical resorption is : A. Poor B. Good if apex can be sealed C. Dependant upon periapical surgery D. Contingent upon systemic antibiotic therapy combined with treatment of the canal

Description : The prognosis of teeth with apical resorption is : A. Poor B. Good if apex can be sealed C. Dependant upon periapical surgery D. Contingent upon systemic antibiotic therapy combined with treatment of the canal

Last Answer : B. Good if apex can be sealed

The most accurate finding of pulpal pathology A. Radiolucency on the apical region B. Pain on hot or cold drinks C. he absence of response to pulp testing

Description : The most accurate finding of pulpal pathology A. Radiolucency on the apical region B. Pain on hot or cold drinks C. he absence of response to pulp testing

Last Answer : C. he absence of response to pulp testing

Internal resorption is, A. Radiolucency over unaltered canal B. Usually in a response to trauma C. Radiopacity over unaltered canal

Description : Internal resorption is, A. Radiolucency over unaltered canal B. Usually in a response to trauma C. Radiopacity over unaltered canal

Last Answer : B. Usually in a response to trauma

The most desirable outcome of endodontic treatment is, A. The healing of the alveolar bone B. The deposition of cementum at the apex C. Formation of fibrous capsule around the apex

Description : The most desirable outcome of endodontic treatment is, A. The healing of the alveolar bone B. The deposition of cementum at the apex C. Formation of fibrous capsule around the apex

Last Answer : B. The deposition of cementum at the apex

The most common reason to refer a child to a pedodontist is problems with: A. Rampant caries B. Behaviour management C. Endodontic treatments in primary teeth D. Space maintainers

Description : The most common reason to refer a child to a pedodontist is problems with: A. Rampant caries B. Behaviour management C. Endodontic treatments in primary teeth D. Space maintainers

Last Answer : B. Behaviour management

In regard to external resorption:** A. Continues after successful endo treatment B. Stops in most cases following successful endodontic treatment C. Continues only in mandibular incisors after successful endo treatment D. Stops in maxillary lateral incisors after successful endodontic treatment E. None of the above

Description : In regard to external resorption:** A. Continues after successful endo treatment B. Stops in most cases following successful endodontic treatment C. Continues only in mandibular incisors after ... D. Stops in maxillary lateral incisors after successful endodontic treatment E. None of the above

Last Answer : B. Stops in most cases following successful endodontic treatment

Two successive negative cultures are: A. Absolutely necessary for successful endodontic treatment B. Not always necessary for successful endodontic treatment C. Not questioned today as a dogmatic requirement in endodontics D. Unquestioningly it adhered for successful endodontic treatment E. None of the above

Description : Two successive negative cultures are: A. Absolutely necessary for successful endodontic treatment B. Not always necessary for successful endodontic treatment C. Not questioned today as a dogmatic ... D. Unquestioningly it adhered for successful endodontic treatment E. None of the above

Last Answer : B. Not always necessary for successful endodontic treatment

The BEST treatment for alveolar abscess:******** A. Endontic treatment or extraction B. Incision and drainage alone C. Extraction D. Endodontic

Description : The BEST treatment for alveolar abscess:******** A. Endontic treatment or extraction B. Incision and drainage alone C. Extraction D. Endodontic

Last Answer : A. Endontic treatment or extraction

A crown casting with a chamfer margin fits the die; but in the mouth the casting is open approximately 0.3mm. A satisfactory fit and accurate physiological close of the gingival area of the crown can BEST be achieved by: A. Hand burnishing B. Mechanical burnishing C. Using finishing burs and points to remove the enamel margins on the tooth D. Making a new impression and remaking the crown E. Relieving the inside of the occlusal surface of the casting to allow for further

Description : A crown casting with a chamfer margin fits the die; but in the mouth the casting is open approximately 0.3mm. A satisfactory fit and accurate physiological close of the gingival area of the crown ... the crown E. Relieving the inside of the occlusal surface of the casting to allow for further

Last Answer : D. Making a new impression and remaking the crown

The best method to take X-ray of the maxillary sinus is, A. Periapical radiograph B. Panoramic view C. Lateral cephaloghraph D. Occipitomental view E. Reverse Towne’s view

Description : The best method to take X-ray of the maxillary sinus is, A. Periapical radiograph B. Panoramic view C. Lateral cephaloghraph D. Occipitomental view E. Reverse Towne’s view

Last Answer : D. Occipitomental view

In regard to periapical lesions, what is TRUE: A. Are predominantly anaerobic B. Must be treated by antibiotics C. Must always treated by surgery

Description : In regard to periapical lesions, what is TRUE: A. Are predominantly anaerobic B. Must be treated by antibiotics C. Must always treated by surgery

Last Answer : A. Are predominantly anaerobic

A periapical x ray of 11 and 12 region shows the vimen, floor of the nasal fossa and the median palatine suture. The other feature that can be seen is: A. Maxillary sinus B. Incisive foramen C. Zygomatic process D. Wall of maxillary sinus

Description : A periapical x ray of 11 and 12 region shows the vimen, floor of the nasal fossa and the median palatine suture. The other feature that can be seen is: A. Maxillary sinus B. Incisive foramen C. Zygomatic process D. Wall of maxillary sinus

Last Answer : B. Incisive foramen

The lamina dura is absent in which condition: A. Von Recklinghausen B. Paget’s C. Periapical granuloma

Description : The lamina dura is absent in which condition: A. Von Recklinghausen B. Paget’s C. Periapical granuloma

Last Answer : B. Paget’s

Which micro-organisms in periapical lesion would you find microscopically: A. Aerobes B. Aerobes to mainly anaerobes

Description : Which micro-organisms in periapical lesion would you find microscopically: A. Aerobes B. Aerobes to mainly anaerobes

Last Answer : B. Aerobes to mainly anaerobes

After completing pulp extirpation, debridement and placing a dressing; apical periodontitis is because: A. Over instrumentation extending into periapical area B. Irritation from chemicals used C. Entrapped bacteria D. One or any combination of the above

Description : After completing pulp extirpation, debridement and placing a dressing; apical periodontitis is because: A. Over instrumentation extending into periapical area B. Irritation from chemicals used C. Entrapped bacteria D. One or any combination of the above

Last Answer : D. One or any combination of the above

Which of the following is true in regard to periapical cementoma: A. Teeth are vital. B. Teeth are not vital

Description : Which of the following is true in regard to periapical cementoma: A. Teeth are vital. B. Teeth are not vital

Last Answer : A. Teeth are vital.

Periapical abscess is differentiated from periodontal abscess by: A. Pulpal radiology B. History and vitality test C. X-ray and history

Description : Periapical abscess is differentiated from periodontal abscess by: A. Pulpal radiology B. History and vitality test C. X-ray and history

Last Answer : B. History and vitality test

.Which radiographic method would you use in assessing periodontal conditions and lesions: A. Bitewing B. Periapical C. Occlusal D. Panoramic

Description : .Which radiographic method would you use in assessing periodontal conditions and lesions: A. Bitewing B. Periapical C. Occlusal D. Panoramic

Last Answer : B. Periapical

Where is the MOST probable place of bone resorption after a deciduous molar has a pulpal gangrene: A. Interradicular septum B. The periapical area

Description : Where is the MOST probable place of bone resorption after a deciduous molar has a pulpal gangrene: A. Interradicular septum B. The periapical area

Last Answer : A. Interradicular septum

How would you diagnose a periapical abscess: A. Pain on percussion B. Pain when eating hot food C. Pain when eating cold food D. The thickness of periodontal ligament on X-Ray

Description : How would you diagnose a periapical abscess: A. Pain on percussion B. Pain when eating hot food C. Pain when eating cold food D. The thickness of periodontal ligament on X-Ray

Last Answer : A. Pain on percussion

Swelling after RCT is mainly caused by (Being asked as: What is the most frequent cause of pain which occurs several days after obturation?, too): A. Entrapped Bacteria, or the presence of bacteria in the periapical region. B. Underfilling the root canal system C. Overfilled root canal

Description : Swelling after RCT is mainly caused by (Being asked as: What is the most frequent cause of pain which occurs several days after obturation?, too): A. Entrapped Bacteria, or the presence of bacteria in the periapical region. B. Underfilling the root canal system C. Overfilled root canal

Last Answer : A. Entrapped Bacteria, or the presence of bacteria in the periapical region.

Treatment of gangrenous tooth: A. Pulp capping B. Root canal therapy C. Pulpotomy

Description : Treatment of gangrenous tooth: A. Pulp capping B. Root canal therapy C. Pulpotomy

Last Answer : B. Root canal therapy

An advantage of metal. ceramic crowns, compared wit full ceramic crowns for restoring anterior teeth is, A. Palatal reduction may be of minimal thickness. B. Overall conservative for tooth structure. C. Ability to watch the appearance of adjacent natural teeth. D. Less laboratory time.

Description : An advantage of metal. ceramic crowns, compared wit full ceramic crowns for restoring anterior teeth is, A. Palatal reduction may be of minimal thickness. B. Overall conservative for tooth structure. C. Ability to watch the appearance of adjacent natural teeth. D. Less laboratory time.

Last Answer : A. Palatal reduction may be of minimal thickness.

The minimal labial tooth reduction for satisfactory aesthetics with porcelain fused to metal crown is, A. 1mm B. The full thickness of enamel C. 1.5 mm D. 2.5mm E. One third of the dentine thickness

Description : The minimal labial tooth reduction for satisfactory aesthetics with porcelain fused to metal crown is, A. 1mm B. The full thickness of enamel C. 1.5 mm D. 2.5mm E. One third of the dentine thickness

Last Answer : C. 1.5 mm

An advantage of metal-ceramic crowns, compared wit full ceramic crowns for restoring anterior teeth is, A. Palatal reduction may be of minimal thickness B. Overall conservative for tooth structure C. Ability to watch the appearance of adjacent natural teeth D. Less laboratory time

Description : An advantage of metal-ceramic crowns, compared wit full ceramic crowns for restoring anterior teeth is, A. Palatal reduction may be of minimal thickness B. Overall conservative for tooth structure C. Ability to watch the appearance of adjacent natural teeth D. Less laboratory time

Last Answer : A. Palatal reduction may be of minimal thickness

.Fluoridation is the adjustment of the fluoride content of a community water supply to optimum levels for caries prevention. Which of the following statement is correct? A. Tooth decay declines by 90% to 95% B. Tooth decay declines by 45% to 55% C. Greater reduction in smooth surface caries from in pit and fissures D. Fluoridation increases vulnerability to osteoporosis

Description : .Fluoridation is the adjustment of the fluoride content of a community water supply to optimum levels for caries prevention. Which of the following statement is correct? A. Tooth decay ... in smooth surface caries from in pit and fissures D. Fluoridation increases vulnerability to osteoporosis

Last Answer : C. Greater reduction in smooth surface caries from in pit and fissures

A patient shows a lesion on the tongue adjacent to sharp tooth. You “round off” the sharp area and recall patient after one month to see the lesion turning smaller in size. What would be your next step: A. Keep observing B. Perform an excision biopsy C. Prescribe Kenalog and Orabase

Description : A patient shows a lesion on the tongue adjacent to sharp tooth. You “round off” the sharp area and recall patient after one month to see the lesion turning smaller in size. What would be your next step: A. Keep observing B. Perform an excision biopsy C. Prescribe Kenalog and Orabase

Last Answer : A. Keep observing

The size of the pulp chamber within the tooth is influenced by: A. Age B. Parafunctional C. History of the tooth /abrasion, erosion, caries/ D. All of the above

Description : The size of the pulp chamber within the tooth is influenced by: A. Age B. Parafunctional C. History of the tooth /abrasion, erosion, caries/ D. All of the above

Last Answer : D. All of the above

The major etiological factor responsible for Class II division 2 malocclusion in Angle’s classification is:** A. Thumb sucking B. Growth discrepancy C. Tongue thrust habit D. Tooth to jaw size discrepancy E. Skeletal cause (discrepancy)

Description : The major etiological factor responsible for Class II division 2 malocclusion in Angle’s classification is:** A. Thumb sucking B. Growth discrepancy C. Tongue thrust habit D. Tooth to jaw size discrepancy E. Skeletal cause (discrepancy)

Last Answer : E. Skeletal cause (discrepancy)

Addition of pyrazinamide and ethambutol for the first two months to the isoniazid + rifampin therapy of tuberculosis serves the following purpose(s): A. Reduces the total duration of therapy to 6 months B. Produces more rapid sputum conversion C. Permits reduction of rifampin dose D. Both ‘A’ and ‘B’ are correct

Description : Addition of pyrazinamide and ethambutol for the first two months to the isoniazid + rifampin therapy of tuberculosis serves the following purpose(s): A. Reduces the total duration of therapy to 6 months B. ... sputum conversion C. Permits reduction of rifampin dose D. Both A' and B' are correct

Last Answer : D. Both ‘A’ and ‘B’ are correc

A patient has improperly formed DEJ, reduction in size of pulp chamber, chipping and attrition of enamel that would MOSTLY be: A. Fluorosis B. Amelogenesis imperfecta C. Dentinogenesis imperfecta

Description : A patient has improperly formed DEJ, reduction in size of pulp chamber, chipping and attrition of enamel that would MOSTLY be: A. Fluorosis B. Amelogenesis imperfecta C. Dentinogenesis imperfecta

Last Answer : C. Dentinogenesis imperfecta

A healthy 6 years-old child presents with carious maxillary second primary molar with a necrotic pulp. Which treatment would be preferred? A. Extraction B. Indirect pulp treatment C. Pulpotomy (it's done to preserve the vitality of the roots and allow normal exfoliation) D. Pulpectomy to preserve the tooth as a space manteiner. E. Antibiotic coverage

Description : A healthy 6 years-old child presents with carious maxillary second primary molar with a necrotic pulp. Which treatment would be preferred? A. Extraction B. Indirect pulp treatment C. ... normal exfoliation) D. Pulpectomy to preserve the tooth as a space manteiner. E. Antibiotic coverage

Last Answer : D. Pulpectomy to preserve the tooth as a space manteiner.

Why are three tripods marked on a cast being surveyed: A. To orient cast to articulator B. To orient cast to surveyor C. To provide guide planes

Description : Why are three tripods marked on a cast being surveyed: A. To orient cast to articulator B. To orient cast to surveyor C. To provide guide planes

Last Answer : B. To orient cast to surveyor

In class II preparation it is difficult to place the gingival seat when preparation is extended too gingivally because the: A. Enamel rods are directed occlusally B. Marked cervical constriction

Description : In class II preparation it is difficult to place the gingival seat when preparation is extended too gingivally because the: A. Enamel rods are directed occlusally B. Marked cervical constriction

Last Answer : B. Marked cervical constriction

Gemination is: a. Division of single tooth, twining. b. Fusion of two or more crowns of teeth c. Fusion of two or more roots.

Description : Gemination is: a. Division of single tooth, twining. b. Fusion of two or more crowns of teeth c. Fusion of two or more roots.

Last Answer : a. Division of single tooth, twining.

In testing for mobility, which of the following statement is true: a.Heavy pressure must sometimes be used to test mobility. b.Only lateral mobility is significant in diagnosis and treatment of chronic inflammatory periodontal disease. c.Hyper mobility indicates that the tooth supporting structure have been weakened. d.During the periodontal examination each tooth should be tested individually for hyper mobility.

Description : In testing for mobility, which of the following statement is true: a.Heavy pressure must sometimes be used to test mobility. b.Only lateral mobility is significant in diagnosis and ... weakened. d.During the periodontal examination each tooth should be tested individually for hyper mobility.

Last Answer : d.During the periodontal examination each tooth should be tested individually for hyper mobility.

As far as surgical removal of wisdom teeth is concerned which of the following is true? a- Prophylactic prescription of antibiotic reduces dramatically the chances of infection. b- Raising a lingual flap will increases the incidence of neurapraxia but will reduce the incidence of neurotmesis with respect to the lingual nerve. c- Prophylactic prescription of dexamethasone will dramatically reduce post operative swelling. d- Inferior dental nerve injury is unlikely since the nerve passes medial to the wisdom tooth root. e- The use of vasoconstrictors in local anaesthetics will increase the chances of infection.

Description : As far as surgical removal of wisdom teeth is concerned which of the following is true? a- Prophylactic prescription of antibiotic reduces dramatically the chances of infection. b- Raising a lingual ... e- The use of vasoconstrictors in local anaesthetics will increase the chances of infection.

Last Answer : b- Raising a lingual flap will increases the incidence of neurapraxia but will reduce the incidence of neurotmesis with respect to the lingual nerve.

Which of the following is true regarding preparation of custom tray for elastomeric impression: a. Adhesive is preferred over perforation. b. Perforation provides adequate retention c. Adhesive is applied immediately before procedure d. Perforations are not made in the area over the prepared tooth .

Description : Which of the following is true regarding preparation of custom tray for elastomeric impression: a. Adhesive is preferred over perforation. b. Perforation provides adequate retention c. Adhesive is ... before procedure d. Perforations are not made in the area over the prepared tooth .

Last Answer : a. Adhesive is preferred over perforation.