MDS PREP

While combining NaOCH and H₂O₂ as irrigants

   1)    H₂O₂ should be used last

   2)    NaOCH should be used last

   3)    First irrigation should be done by normal saline

   4)    NaOCH and H₂O₂ should never be used simultaneously

Endodontics Answer: 2

Because residual H2O2 might react with debris and produce gas that can cause continuous pain.

Endodontic therapy is said to be successful when following changes occur in periapical region�
�1. Formation of cementum
�2. Regeneration of alveolar bone
�3. Regeneration of PD ligament
�4. All of the above

Endodontics Answer: 4

When it comes to assessing the success of endodontic therapy, the changes that
occur in the periapical region are crucial indicators. A successful treatment
typically results in the formation of new cementum, regeneration of the alveolar
bone, and regeneration of the periodontal ligament. These processes are all part
of the body's natural healing response to the removal of infection and the
introduction of a biocompatible filling material in the root canal system. Thus,
all of the above factors contribute to the overall success of the treatment.

Most important and critical step in root canal preparation is
1. Biomechanical preparation
2. Isolation
3. Sterilisation
4. Obturation

Endodontics Answer: 1

Following are true for K-type file root canal instrument except
1. It is used for machining of dentin
2. The number of flutes on the blade is more in file than reamer
3. The file are fabricated from square or triangular crossection wire
4. Have more flexibility

Endodontics Answer: 1

Which of the following is critical for successful apexogenesis and apexification
1) Absence of necrotic tissue & infection in apical region
2) Tight sealing with Ca(OH)
3) Radiographic examination every 3 months
4) Continued response to vitality tests

Endodontics Answer: 1

All of the following may result in underfilling of a root canal except
1) Apical perforation
2) Ledge formation
3) Short length estimation
4) Lateral perforation

Endodontics Answer: 1

In the mandibular arch, the greatest lingual inclination of the crown from its root is seen in the permanent
1. Canine
2. Third molar
3. First premolar
4. Central incisor

Endodontics Answer: 3

In a tooth which has been endodontically treated, there is pain on percussion and slight mobility due to
1) Loose crown
2) Tooth fracture
3) Psychosomatic
4) Eccentric contact

Endodontics Answer: 4

MDS PREP

While combining NaOCH and H₂O₂ as irrigants

   1)    H₂O₂ should be used last

   2)    NaOCH should be used last

   3)    First irrigation should be done by normal saline

   4)    NaOCH and H₂O₂ should never be used simultaneously

Endodontic therapy is said to be successful when following changes occur in periapical region�
�1. Formation of cementum
�2. Regeneration of alveolar bone
�3. Regeneration of PD ligament
�4. All of the above

Most important and critical step in root canal preparation is
1. Biomechanical preparation
2. Isolation
3. Sterilisation
4. Obturation

Following are true for K-type file root canal instrument except
1. It is used for machining of dentin
2. The number of flutes on the blade is more in file than reamer
3. The file are fabricated from square or triangular crossection wire
4. Have more flexibility

Which of the following is critical for successful apexogenesis and apexification
1) Absence of necrotic tissue & infection in apical region
2) Tight sealing with Ca(OH)
3) Radiographic examination every 3 months
4) Continued response to vitality tests

All of the following may result in underfilling of a root canal except
1) Apical perforation
2) Ledge formation
3) Short length estimation
4) Lateral perforation

In the mandibular arch, the greatest lingual inclination of the crown from its root is seen in the permanent
1. Canine
2. Third molar
3. First premolar
4. Central incisor

In a tooth which has been endodontically treated, there is pain on percussion and slight mobility due to
1) Loose crown
2) Tooth fracture
3) Psychosomatic
4) Eccentric contact

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MDS PREP

While combining NaOCH and H2O2 as irrigants 1) H2O2 should be used last 2) NaOCH should be used last 3) First irrigation should be done by normal saline 4) NaOCH and H2O2 should never be used simultaneously

Endodontic therapy is said to be successful when following changes occur in periapical region��1. Formation of cementum�2. Regeneration of alveolar bone�3. Regeneration of PD ligament�4. All of the above

Most important and critical step in root canal preparation is 1. Biomechanical preparation 2. Isolation 3. Sterilisation 4. Obturation

Following are true for K-type file root canal instrument except 1. It is used for machining of dentin 2. The number of flutes on the blade is more in file than reamer 3. The file are fabricated from square or triangular crossection wire 4. Have more flexibility

Which of the following is critical for successful apexogenesis and apexification1) Absence of necrotic tissue & infection in apical region2) Tight sealing with Ca(OH)3) Radiographic examination every 3 months4) Continued response to vitality tests

All of the following may result in underfilling of a root canal except1) Apical perforation2) Ledge formation3) Short length estimation4) Lateral perforation

In the mandibular arch, the greatest lingual inclination of the crown from its root is seen in the permanent 1. Canine 2. Third molar 3. First premolar 4. Central incisor

In a tooth which has been endodontically treated, there is pain on percussion and slight mobility due to1) Loose crown2) Tooth fracture3) Psychosomatic4) Eccentric contact

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While combining NaOCH and H₂O₂ as irrigants

1) H₂O₂ should be used last

2) NaOCH should be used last

3) First irrigation should be done by normal saline

4) NaOCH and H₂O₂ should never be used simultaneously

Endodontic therapy is said to be successful when following changes occur in periapical region�
�1. Formation of cementum
�2. Regeneration of alveolar bone
�3. Regeneration of PD ligament
�4. All of the above

Most important and critical step in root canal preparation is
1. Biomechanical preparation
2. Isolation
3. Sterilisation
4. Obturation

Following are true for K-type file root canal instrument except
1. It is used for machining of dentin
2. The number of flutes on the blade is more in file than reamer
3. The file are fabricated from square or triangular crossection wire
4. Have more flexibility

Which of the following is critical for successful apexogenesis and apexification
1) Absence of necrotic tissue & infection in apical region
2) Tight sealing with Ca(OH)
3) Radiographic examination every 3 months
4) Continued response to vitality tests

All of the following may result in underfilling of a root canal except
1) Apical perforation
2) Ledge formation
3) Short length estimation
4) Lateral perforation

In the mandibular arch, the greatest lingual inclination of the crown from its root is seen in the permanent
1. Canine
2. Third molar
3. First premolar
4. Central incisor

In a tooth which has been endodontically treated, there is pain on percussion and slight mobility due to
1) Loose crown
2) Tooth fracture
3) Psychosomatic
4) Eccentric contact