MDS PREP

In class III composite preparation, retention points should be placed�
�1. In the axial wall
�2. Entirely in dentin
�3. At the dentinoenamel junction
�4. At the expense of facial and lingual wall

Conservative Dentistry Answer: 2

Explanation:�In Class III composite preparations, retention
points should be placed entirely in dentin. This is because dentin provides a
more reliable substrate for bonding compared to enamel, especially in areas
where the enamel may be thin or compromised. By placing retention points in
dentin, the restoration can achieve better mechanical retention and bonding
strength, which is crucial for the longevity of the restoration.

Which of the following burs is used for cavity preparation in paedodontic practice
1) Doughnut bur
2) Pear shaped bur
3) Wheel bur
4) Round bur

Conservative Dentistry Answer: 2

Threaded pins are used in large dental amalgam restorations to provide
1) Retention form
2) Resistance form
3) Occlusal stops for opposing teeth
4) All of the above

Conservative Dentistry Answer: 1

Local anaesthetics aid in wet free field by
1) Blocking parasympathetic nerve supply
2) Blocking the sympathetic nerve supply
3) By reducing the anxiety of the patient
4) All of the above

Conservative Dentistry Answer: 3

Fracture tooth is best restored with
1) Pin retained amalgam
2) Cast gold
3) Both A & B
4) Direct gold

Conservative Dentistry Answer: 2

In MOD cast onlay the axial wall of the preparation
1) Converges slightly from gingival wall to pulpal wall
2) Diverges slightly from gingival to pulpal wall
3) Converges from pulpal wall to gingival wall
4) All of the above

Conservative Dentistry Answer: 1

The best method to retract gingiva for class V composite restoration
1) Retraction ford
2) Electrosurgery
3) Rubber dam
4) All of the above

Conservative Dentistry Answer: 3

MDS PREP

In class III composite preparation, retention points should be placed�
�1. In the axial wall
�2. Entirely in dentin
�3. At the dentinoenamel junction
�4. At the expense of facial and lingual wall

Which of the following burs is used for cavity preparation in paedodontic practice
1) Doughnut bur
2) Pear shaped bur
3) Wheel bur
4) Round bur

Threaded pins are used in large dental amalgam restorations to provide
1) Retention form
2) Resistance form
3) Occlusal stops for opposing teeth
4) All of the above

Local anaesthetics aid in wet free field by
1) Blocking parasympathetic nerve supply
2) Blocking the sympathetic nerve supply
3) By reducing the anxiety of the patient
4) All of the above

Fracture tooth is best restored with
1) Pin retained amalgam
2) Cast gold
3) Both A & B
4) Direct gold

In MOD cast onlay the axial wall of the preparation
1) Converges slightly from gingival wall to pulpal wall
2) Diverges slightly from gingival to pulpal wall
3) Converges from pulpal wall to gingival wall
4) All of the above

The best method to retract gingiva for class V composite restoration
1) Retraction ford
2) Electrosurgery
3) Rubber dam
4) All of the above

Short bevel extends
1. In almost 2/3 of the enamel
2. All of the enamel and half of the dentin
3. All of the enamel only
4. 1/3 of the enamel

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MDS PREP

In class III composite preparation, retention points should be placed��1. In the axial wall�2. Entirely in dentin�3. At the dentinoenamel junction�4. At the expense of facial and lingual wall

Which of the following burs is used for cavity preparation in paedodontic practice1) Doughnut bur2) Pear shaped bur3) Wheel bur4) Round bur

Threaded pins are used in large dental amalgam restorations to provide1) Retention form2) Resistance form3) Occlusal stops for opposing teeth4) All of the above

Local anaesthetics aid in wet free field by1) Blocking parasympathetic nerve supply2) Blocking the sympathetic nerve supply3) By reducing the anxiety of the patient4) All of the above

Fracture tooth is best restored with1) Pin retained amalgam2) Cast gold3) Both A & B4) Direct gold

In MOD cast onlay the axial wall of the preparation1) Converges slightly from gingival wall to pulpal wall2) Diverges slightly from gingival to pulpal wall3) Converges from pulpal wall to gingival wall4) All of the above

The best method to retract gingiva for class V composite restoration 1) Retraction ford2) Electrosurgery 3) Rubber dam 4) All of the above

Short bevel extends 1. In almost 2/3 of the enamel 2. All of the enamel and half of the dentin 3. All of the enamel only 4. 1/3 of the enamel

Explore by subjects

In class III composite preparation, retention points should be placed�
�1. In the axial wall
�2. Entirely in dentin
�3. At the dentinoenamel junction
�4. At the expense of facial and lingual wall

Which of the following burs is used for cavity preparation in paedodontic practice
1) Doughnut bur
2) Pear shaped bur
3) Wheel bur
4) Round bur

Threaded pins are used in large dental amalgam restorations to provide
1) Retention form
2) Resistance form
3) Occlusal stops for opposing teeth
4) All of the above

Local anaesthetics aid in wet free field by
1) Blocking parasympathetic nerve supply
2) Blocking the sympathetic nerve supply
3) By reducing the anxiety of the patient
4) All of the above

Fracture tooth is best restored with
1) Pin retained amalgam
2) Cast gold
3) Both A & B
4) Direct gold

In MOD cast onlay the axial wall of the preparation
1) Converges slightly from gingival wall to pulpal wall
2) Diverges slightly from gingival to pulpal wall
3) Converges from pulpal wall to gingival wall
4) All of the above

The best method to retract gingiva for class V composite restoration
1) Retraction ford
2) Electrosurgery
3) Rubber dam
4) All of the above

Short bevel extends
1. In almost 2/3 of the enamel
2. All of the enamel and half of the dentin
3. All of the enamel only
4. 1/3 of the enamel