The ideal length of RCT is, A. At the apex B. As far as you can obturate C. 0.5 - 1.5 mm before the apex

The ideal length of RCT is,
A. At the apex
B. As far as you can obturate
C. 0.5 - 1.5 mm before the apex
by

1 Answer

Answer :

C. 0.5 - 1.5 mm before the apex
by

Related questions

In RCT the ideal root filling: A. Ends at the apex B. Extends beyond apex to achieve a good seal C. Ends at the dentino-cemental junction

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Last Answer : C. Ends at the dentino-cemental junction

A female patient comes to you complaining of persistent pain in a heavily restored central incisor; you suspect pulpitis and you have been told that she is in transit leaving by plane next day. Your treatment will be, A. Remove filling and place a sedative dressings B. Pulp extirpation and obturate with Ledermix dressings C. Prescribe analgesics and systemic antibiotic

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Last Answer : B. Pulp extirpation and obturate with Ledermix dressings

Ledermix is used in RCT to relieve pain because of, A. Antibiotics B. Corticosteroid

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Last Answer : A. Antibiotics B. Corticosteroid

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

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

The most common cause of RCT “Root Canal Treatment” failure is: A. The canal not filled completely (Short obturation) B. Over filled canals

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Last Answer : A. The canal not filled completely (Short obturation)

A child has sustained a traumatic exposure of primary central incisor, he presents to you for treatment two days after the injury. Which of the following should be considered? A. Pulpotomy and Ca(OH)2 B. Pulpotomy and formocresol C. Direct pulp capping D. Pulpectomy (RCT)

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Last Answer : D. Pulpectomy (RCT)

The ideal length of core in the fabrication of crown and core of endodontically treated tooth is, A. 1.5 of crown length B. The length of the crown C. 2/3 tooth/root length D. ½ root length

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The term TUGback is related to ( “When used in connection with a master Gutta Percha cone in endodontics)” : A. Tensile strength of the gutta percha B. Consistency of gutta percha C. Size of the cone D. Fit of the cone in the apical 1 or 2 mm E. Length of the cone

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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

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After obturation and on X-ray you notice the obturation materials are 1mm beyond apex. What is your first management? A. Refill the canal B. Pull the GP cone about 1mm out and take a new X-ray C. Leave it as it

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While removing the second primary molar of a 9 years-old child, the apical ¼ of the root fractures and stays in the socket, A. You will just leave it and observe it B. You take surgically by a lingual flap C. You try to take out by using a root apex elevator D. You use a fine-end forceps to take it out

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Last Answer : A. You will just leave it and observe it

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On an X ray you find the cement of the previous root canal treatment is extending 1mm beyond the apex without any symptoms; what would you do: A. Remove restoration material and retreat B. Apiectomy C. Leave as is until any complications occur

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You notice a radiolucent area close to the apex of the central incisor, on a second x ray the radiolucent area moves; it is likely to be: A. Cyst B. Abscess C. Granuloma D. Incisive foramen in sup lingual for amen inf

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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.

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Description : Optimum penetration of a .024 or .031 inch self-threading pin in dentin is . . . a. 0.5 mm b. 1.0 mm c. 2.0 mm d. 2.5 mm e. 3.0 mm

Last Answer : c. 2.0 mm

The normal range of gingival depth “Epithelial attachment” in healthy mouth is: A. 1-2 mm B. 0-3 mm C. 2-3 mm D. 0-5 mm

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Last Answer : C. 2-3 mm

It is desirable for major connectors of upper partial dentures to:** A. Be at least 5 mm away from the gingival margin B. Cover the anterior palate

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Patient reported to you 30 min after trauma to central incisor. Patient is 10 yrs old and there is traumatic exposure of pulp. What will be the line of treatment— 1) coronal pulpotomy and Ca-hydr. Base and then permanent filling 2) Ca-hydroxide base and permanent filling 3) 1-2 mm. of coronal pulp extirpated and Ca hydroxide and then permanent filling 4) Pulpectomy

Description : Patient reported to you 30 min after trauma to central incisor. Patient is 10 yrs old and there is traumatic exposure of pulp. What will be the line of treatment- 1) coronal pulpotomy and Ca-hydr. ... 3) 1-2 mm. of coronal pulp extirpated and Ca hydroxide and then permanent filling 4) Pulpectomy

Last Answer : 3) 1-2 mm. of coronal pulp extirpated and Ca hydroxide and then permanent filling

Characteristic of mucogingival involvement: a. A pocket of more than 4 mm depth. b. Only 1mm of attached gingiva remains. c. Pocket extends to the mucogingival junction.

Description : Characteristic of mucogingival involvement: a. A pocket of more than 4 mm depth. b. Only 1mm of attached gingiva remains. c. Pocket extends to the mucogingival junction.

Last Answer : c. Pocket extends to the mucogingival junction.

An 8 years-old child who has sustained a fracture of maxillary permanent central incisor in which 2mm of the pulp is exposed presents for treatment three hours after injury. Which of the following should be considered? a- Remove the surface 1. 2 mm of pulp tissue and place calcium hydroxide. b- Place calcium hydroxide directly on the exposed pulp. c- Pulpotomy using formocresol. d- Pulpectomy and immediate root filling. e- Pulpectomy and apexification.

Description : An 8 years-old child who has sustained a fracture of maxillary permanent central incisor in which 2mm of the pulp is exposed presents for treatment three hours after injury. Which of the ... - Pulpotomy using formocresol. d- Pulpectomy and immediate root filling. e- Pulpectomy and apexification.

Last Answer : a- Remove the surface 1. 2 mm of pulp tissue and place calcium hydroxide

Jaw relations for edentulous patient have been established. The maxillary cast has been mounted on the articulator without face-bow and you decide to increase the occlusal vertical dimension by 4 mm. This will necessitate, A. Opening the articulator 4 mm B. A new centric relation record C. Changes in the condylar guide settings D. Increase in the vertical dimension

Description : Jaw relations for edentulous patient have been established. The maxillary cast has been mounted on the articulator without face-bow and you decide to increase the occlusal vertical dimension by 4 mm ... record C. Changes in the condylar guide settings D. Increase in the vertical dimension

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In the construction of a full veneer gold crown, future recession of gingival tissue can be prevented or at least minimised by, A. Extension of the crown 1 mm under the gingival crevice B. Reproduction of normal tooth incline in the gingival one third of the crown C. Slight over contouring of the tooth in the gingival one fifth of the crown D. Slight under contouring of the tooth in the gingival one fifth of the crown

Description : In the construction of a full veneer gold crown, future recession of gingival tissue can be prevented or at least minimised by, A. Extension of the crown 1 mm under the gingival crevice B. ... of the crown D. Slight under contouring of the tooth in the gingival one fifth of the crown

Last Answer : B. Reproduction of normal tooth incline in the gingival one third of the crown

Child comes to your clinic with a fractured incisor 3 mm supra-gingival, how would you treat the case, A. Formocretasol pulpotomy B. Calcium hydroxide pulpotomy C. Pulpectomy D. Direct capping E. Indirect capping

Description : Child comes to your clinic with a fractured incisor 3 mm supra-gingival, how would you treat the case, A. Formocretasol pulpotomy B. Calcium hydroxide pulpotomy C. Pulpectomy D. Direct capping E. Indirect capping

Last Answer : B. Calcium hydroxide pulpotomy

Characteristic of mucogingival involvement: A. A pocket of more than 4 mm depth B. Only 1mm of attached gingiva remains C. Pocket extends to the mucogingival junction

Description : Characteristic of mucogingival involvement: A. A pocket of more than 4 mm depth B. Only 1mm of attached gingiva remains C. Pocket extends to the mucogingival junction

Last Answer : C. Pocket extends to the mucogingival junction

How much would you reduce a cusp to be replaced with amalgam onlay: A. 2 mm to achieve a good retention form B. 2mm to achieve a good resistance form C. 1mm

Description : How much would you reduce a cusp to be replaced with amalgam onlay: A. 2 mm to achieve a good retention form B. 2mm to achieve a good resistance form C. 1mm

Last Answer : B. 2mm to achieve a good resistance form

Anaesthesia 1 mm above last lower molars will anesthetise: A. Lingual Nerve B. Long buccal nerve

Description : Anaesthesia 1 mm above last lower molars will anesthetise: A. Lingual Nerve B. Long buccal nerve

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8 years old child who has sustained a fracture of maxillary permanent central incisor in which 2mm of the pulp is exposed; presents for treatment three hours after injury. Which of the following should be considered? M07*********** A. Remove the surface 1-2 mm of pulp tissue and place calcium hydroxide (Cvek pulpotomy, apexogenesis) B. Place calcium hydroxide directly on the exposed pulp C. Pulpotomy using formocresol D. Pulpectomy and immediate root filling E. Pulpectomy and apexification

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Last Answer : A. Remove the surface 1-2 mm of pulp tissue and place calcium hydroxide (Cvek pulpotomy, apexogenesis)

Periodontal damage to abutment teeth of partial denture with distal extension can best be avoided by, A. Applying Stressbreakers B. Employing bar s on all abutment teeth C. Maintaining tissue support of the distal extension D. Clasping at least two teeth for each edentulous area E. Maintaining the clasp arms on all abutment teeth at the ideal degree of tension

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Last Answer : C. Maintaining tissue support of the distal extension

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.

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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.

As far as localised alveolar osteitis is concerned; which one of the following is true? A. The incidence in the mandible and maxilla is similar B. The prophylactic prescription of antibiotics prior to extraction reduces the incidence. C. Excessive fibrinolysis is the likely aetiology D. Purulent exudate must be seen for a diagnosis and irrigation is mandatory E. Zn oxide eugenol and alvogyl dressing promote a rapid bone growth

Description : As far as localised alveolar osteitis is concerned; which one of the following is true? A. The incidence in the mandible and maxilla is similar B. The prophylactic prescription of antibiotics ... and irrigation is mandatory E. Zn oxide eugenol and alvogyl dressing promote a rapid bone growth

Last Answer : C. Excessive fibrinolysis is the likely aetiology

Characteristic of Squamous Cell Carcinoma:** A. White skinned people B. Alcoholic and smokers C. It reacts far simply to radiotherapy

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As far as localised alveolar osteitis (dry socket) is concerned; which one of the following is true? M07 A. The incidence in the mandible and maxilla is similar B. The prophylactic prescription of antibiotics prior to extraction reduces the incidence. C. Excessive fibrinolysis is the likely aetiology D. Purulent exudate must be seen for a diagnosis and irrigation is mandatory E. Zinc oxide eugenol and alvogyl dressing promote a rapid bone growth

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Last Answer : C. Excessive fibrinolysis is the likely aetiology

As far as surgical removal of wisdom teeth is concerned, which of the following is true?**CHECK 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 ADC M07 C. Prophylactic prescription of dexamethasone will dramatically reduces 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.

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Description : The growth of the mandible at about year 5 and 6 is mainly at: A. Depth B. Width C. Length

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Description : What is the most important factor to reduces dental irradiation, A. Speed of film B. Collimation C. Filtration D. Cone shape and length

Last Answer : A. Speed of film

Which of the following does not affect the elasticity of retentive clasp? A. Length of the arm B. The cross section shape C. The material used D. The undercut area

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What is Ante’s Law about, A. The relation between the span of the bridge and the pontics B. The periodontal area of the abutment teeth C. The relation between the length of the root and the abutment.

Description : What is Ante’s Law about, A. The relation between the span of the bridge and the pontics B. The periodontal area of the abutment teeth C. The relation between the length of the root and the abutment.

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In the hand instrument formula, 13-80-8-14, the number 14 represents the a. width of the blade b. blade length c. blade angle d. primary cutting edge angle e. none of the above.

Description : In the hand instrument formula, 13-80-8-14, the number 14 represents the a. width of the blade b. blade length c. blade angle d. primary cutting edge angle e. none of the above.

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Flexibility of the retentive clasp arm does not relate to: A. Length B. Cross section C. Material D. Degree of taper E. Under cut area

Description : Flexibility of the retentive clasp arm does not relate to: A. Length B. Cross section C. Material D. Degree of taper E. Under cut area

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A 7 years-old child has class I malocclusion, slight version of maxillary class III, adequate arch length. What is your management: A. Oral screen B. Head cap therapy C. Inclined plane on mandibular anterior teeth D. Hawley plate E. Expansion screw plate

Description : A 7 years-old child has class I malocclusion, slight version of maxillary class III, adequate arch length. What is your management: A. Oral screen B. Head cap therapy C. Inclined plane on mandibular anterior teeth D. Hawley plate E. Expansion screw plate

Last Answer : C. Inclined plane on mandibular anterior teeth