5dd MCQs 242 Orthodontic Prof. Mom Sovannrithy 2019

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  • 1/242 Questions

    What is the most common appliances to avoid for adult orthodontic?

    • Head Gear and Face Mask
    • Removable appliance
    • Fixed appliance
    • Lingual brace
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About This Quiz

This quiz, titled '5DD MCQs 242 Orthodontic Prof. Mom Sovannrithy 2019', assesses knowledge on orthodontic appliances, specifically the lower incline bite plane. It covers its purpose, design, and dental alignment, useful for learners in orthodontics.

5dd MCQs 242 Orthodontic Prof. Mom Sovannrithy 2019 - Quiz

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  • 2. 

    What is the most comment risk in orthodontic treatment?

    • Relapse

    • Retention

    • Over correction

    • Good digitation

    Correct Answer
    A. Relapse
    Explanation
    Relapse is the most common risk in orthodontic treatment. After braces are removed, there is a tendency for teeth to shift back to their original positions. This occurs because the bone and tissues surrounding the teeth need time to stabilize and adapt to the new alignment. Without proper retention, the teeth can relapse and return to their previous misaligned positions. Therefore, it is crucial for orthodontic patients to wear retainers as instructed by their orthodontist to prevent relapse and maintain the desired results of the treatment.

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  • 3. 

    Which one is the most harmful effects of orthodontics tooth movement?

    • Root resorption

    • Change position of teeth

    • Healthy gum

    • Reconstruction bone

    Correct Answer
    A. Root resorption
    Explanation
    Root resorption is the most harmful effect of orthodontic tooth movement. This occurs when the roots of the teeth are dissolved or shortened, leading to potential tooth loss. It is a common side effect of orthodontic treatment and can be caused by excessive force or pressure applied to the teeth during the movement process. Root resorption can be painful and may require additional dental treatment to address the issue.

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  • 4. 

    Which one more likely of Class II division1 malocclusion?

    • Upper incisors are Proclined

    • Upper incisors are Retroclined

    • OJ < 2mm

    • Always deep bite

    Correct Answer
    A. Upper incisors are Proclined
    Explanation
    Class II division 1 malocclusion is characterized by the upper incisors being proclined, meaning they are tilted forward. This is a common feature of this type of malocclusion, where the upper teeth are positioned more forward than the lower teeth, resulting in an overbite. The other options mentioned, such as upper incisors being retroclined (tilted backward), OJ (overjet) less than 2mm, and always having a deep bite, are not typically associated with Class II division 1 malocclusion.

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  • 5. 

    Which one more likely of Class II division2 malocclusion?

    • Upper incisors are Retroclined

    • Upper incisors are proclined

    • OJ < 2mm

    • Openbite

    Correct Answer
    A. Upper incisors are Retroclined
    Explanation
    Class II division 2 malocclusion is characterized by retroclination of the upper incisors. This means that the upper incisors are inclined backward, towards the tongue, creating a more severe overbite. In this type of malocclusion, the upper incisors are typically more upright or even retroclined, while the lower incisors may be proclined. The other options, such as upper incisors being proclined, OJ < 2mm, or openbite, are not typically associated with Class II division 2 malocclusion.

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  • 6. 

    Which Classification of Malocclusion when the OJ Normal?

    • Class I

    • Class II div1

    • Class II div 2

    • Class III

    Correct Answer
    A. Class I
    Explanation
    The correct answer is class I. This classification of malocclusion refers to a normal occlusion where the upper and lower teeth are properly aligned. In class I malocclusion, the bite is normal and there are no major dental or skeletal abnormalities present. This is the most ideal and desired classification as it indicates a healthy and functional bite.

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  • 7. 

    Which one is not Active Component?

    • South end clasp

    • T-spring

    • Z- spring

    • Finger spring

    Correct Answer
    A. South end clasp
    Explanation
    The South end clasp is not an active component. Active components are those that actively exert forces on the teeth or tissues, such as springs or elastics. The South end clasp is a type of clasp used in removable partial dentures, but it does not actively exert forces on the teeth or tissues. Instead, it provides stability and retention for the denture.

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  • 8. 

    Which one is Angle’s classification of malocclusion?

    • Molars relationship

    • Incisors relationship

    • Canine relationship

    • Premolars relationship

    Correct Answer
    A. Molars relationship
    Explanation
    Angle's classification of malocclusion is based on the relationship between the upper and lower molars. This classification system categorizes malocclusions into three types: Class I, Class II, and Class III. Class I malocclusion refers to a normal relationship between the upper and lower molars, while Class II malocclusion involves the upper molars being positioned further forward than the lower molars. Class III malocclusion, on the other hand, occurs when the lower molars are positioned further forward than the upper molars. Therefore, the correct answer is "Molars relationship."

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  • 9. 

    Harmful effects of orthodontics tooth movement?

    • Root resorption

    • Caries

    • Spacing

    • Crowding

    Correct Answer
    A. Root resorption
    Explanation
    Root resorption refers to the breakdown or loss of the tooth's root structure. It can occur as a result of orthodontic tooth movement. When excessive force is applied to the teeth during orthodontic treatment, it can lead to the destruction of the root surface cells, causing resorption. This can weaken the tooth's support system and potentially lead to tooth loss if left untreated. Therefore, root resorption is considered a harmful effect of orthodontics tooth movement.

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  • 10. 

    In case of class II division 1 malocclusion lips are?

    • Incompetent lips

    • Competent

    • Potentially competent

    • Everted lips

    Correct Answer
    A. Incompetent lips
    Explanation
    In class II division 1 malocclusion, the lips are typically incompetent. This means that the lips are unable to fully close together at rest, resulting in a gap between the upper and lower lips. This is often associated with an overjet (protrusion of the upper front teeth) and can affect the overall appearance and function of the lips and mouth.

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  • 11. 

    The most likely clinical feature of Bimaxillary protrusion ?

    • Lips incompetent

    • Deep bite

    • Retrognatic jaws

    • Facial profile is concave

    Correct Answer
    A. Lips incompetent
    Explanation
    Bimaxillary protrusion refers to a condition where both the upper and lower jaws protrude forward, causing the lips to be incompetent. This means that the lips are unable to fully close or seal together, resulting in an open mouth appearance. This condition can also lead to other dental and facial issues such as a deep bite, where the upper teeth excessively overlap the lower teeth, and a concave facial profile. However, the most likely clinical feature associated with bimaxillary protrusion is lips incompetence.

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  • 12. 

    Which appliance can correct anterior cross bite?

    • Removable appliance within Z spring or T spring and posterior bite plane

    • Orthognatic surgery

    • Retainer

    • Class II twinblock

    Correct Answer
    A. Removable appliance within Z spring or T spring and posterior bite plane
    Explanation
    A removable appliance with a Z spring or T spring and a posterior bite plane can correct an anterior cross bite. These appliances are designed to apply pressure to the teeth in order to shift them into the correct position and alignment. The Z spring or T spring helps to move the teeth, while the posterior bite plane helps to correct the bite. This combination of features in the removable appliance allows for effective correction of the anterior cross bite.

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  • 13. 

    Which one is more likely components for Expansion arch?

    • Screw expansion

    • Z- spring

    • Labial bow

    • Adam Spring

    Correct Answer
    A. Screw expansion
    Explanation
    The correct answer is Screw expansion. Screw expansion is a commonly used component for an expansion arch. It is designed to gradually widen the upper jaw and create more space for the teeth. This component is adjustable and can be turned to apply pressure on the palatal bones, causing them to separate and allow for expansion. Z-spring, labial bow, and Adam spring are also components used in orthodontics, but they are not specifically associated with expansion arches.

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  • 14. 

    Soft tissue profile of a class III patient is?

    • Concave

    • Convex

    • Point A is ahead

    • N Point is ahead

    Correct Answer
    A. Concave
    Explanation
    The soft tissue profile of a class III patient is concave. In class III malocclusion, the lower jaw is positioned further forward than the upper jaw, resulting in a concave appearance of the soft tissue profile. This means that the chin is more prominent and the upper lip may appear retruded or receded in relation to the lower lip.

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  • 15. 

    Tooth pain when we move it because?

    • Too much forces

    • Tooth move

    • Bone lost

    • Gingivitis

    Correct Answer
    A. Too much forces
    Explanation
    Tooth pain when we move it can be caused by excessive forces being applied to the tooth. These forces can result from various factors such as grinding or clenching of teeth, trauma, or improper biting and chewing habits. When excessive forces are applied, it can lead to tooth mobility and cause discomfort or pain when the tooth is moved.

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  • 16. 

    Which components can correct Anterior Crossbite?

    • Removable appliance with Z spring and posterior bite plane

    • Upper inclined bite plane

    • Coffin spring

    • Functional appliance

    Correct Answer
    A. Removable appliance with Z spring and posterior bite plane
    Explanation
    The correct answer is a removable appliance with a Z spring and posterior bite plane. This appliance can correct anterior crossbite by using the Z spring to expand the upper arch and move the teeth into the correct position. The posterior bite plane helps to guide the bite into the correct alignment. The other options mentioned, such as the upper inclined bite plane, coffin spring, and functional appliance, may have other uses in orthodontics but are not specifically designed to correct anterior crossbite.

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  • 17. 

    តើចំលើយមួយណាសំរាបើ Expansion arch?

    • Screw expansion

    • Robert retractor

    • Labial bow

    • Adam clasp

    Correct Answer
    A. Screw expansion
    Explanation
    The correct answer is "Screw expansion". Screw expansion refers to a dental procedure that involves the use of a screw-like device to widen the dental arch. This procedure is commonly used in orthodontics to create space for crowded teeth or to correct a narrow dental arch. The screw is inserted into the palate and gradually expanded over time to achieve the desired expansion. This technique is effective in creating more space in the mouth and improving the alignment of the teeth.

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  • 18. 

    Clinical feature of Class II division 2?

    • Retroclined upper central Incisors with OJ reduce

    • Overjet reverse

    • OJ increase with proclined upper incisors

    • Proclined upper incisors

    Correct Answer
    A. Retroclined upper central Incisors with OJ reduce
    Explanation
    The clinical feature of Class II division 2 is characterized by retroclined upper central incisors with a reduction in overjet. This means that the upper front teeth are tilted backward and the horizontal distance between the upper and lower front teeth is decreased.

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  • 19. 

    What is the Keys of angle’s classification?

    • 1st permanent molar (Molars relationship)

    • Incisors relationship

    • Canine relation ship

    • Class I canine relationship

    Correct Answer
    A. 1st permanent molar (Molars relationship)
    Explanation
    The keys of angle's classification refer to the criteria used to determine the relationship between the first permanent molars. This is an important factor in classifying the occlusion or alignment of the teeth. Angle's classification system categorizes occlusions into three classes: Class I, Class II, and Class III. In this case, the correct answer is the relationship between the first permanent molars, which is a key factor in determining the classification.

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  • 20. 

    What is the Malocclusion means?

    • Irregularities of teeth

    • Normal alignment of teeth

    • Aligned teeth

    • Good digitation

    Correct Answer
    A. Irregularities of teeth
    Explanation
    Malocclusion refers to the misalignment or incorrect positioning of the teeth when the jaws are closed. It can result in various irregularities such as overcrowding, gaps, overbite, underbite, or crossbite. Therefore, the correct answer is "Irregularities of teeth." This term is commonly used in dentistry to describe the condition where the teeth do not fit together properly, causing problems with chewing, speaking, and overall oral health.

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  • 21. 

    Which one is the most likely OJ for Class II div 1 malocclusion?

    • Increase

    • Decrease

    • Average

    • Severe

    Correct Answer
    A. Increase
    Explanation
    The most likely OJ (overjet) for Class II div 1 malocclusion is an increase. Class II div 1 malocclusion is characterized by a protrusion of the upper front teeth and a retrusion of the lower jaw. This results in an increased overjet, which is the horizontal distance between the upper and lower incisors when the teeth are in a biting position. Therefore, an increase in the overjet is expected in this type of malocclusion.

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  • 22. 

    Which one is the most comment decision for extraction teeth?

    • Crowding

    • Spacing

    • Rotation

    • Tooth impacted

    Correct Answer
    A. Crowding
    Explanation
    The most common reason for extraction of teeth is crowding. Crowding occurs when there is not enough space in the mouth for all the teeth to properly align. This can lead to overlapping or twisted teeth, which can affect the overall alignment and appearance of the smile. In such cases, extraction of one or more teeth may be necessary to create enough space for the remaining teeth to align properly.

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  • 23. 

    Which causes can make Root resorption?

    • Exceesive force

    • Light force

    • Optional force

    • Ideal force

    Correct Answer
    A. Exceesive force
    Explanation
    Excessive force can cause root resorption. This refers to the application of too much pressure or force on the tooth, which can lead to the breakdown or destruction of the root structure. This can occur due to various reasons such as trauma, orthodontic treatment, or bruxism. When excessive force is applied, it can result in damage to the periodontal ligament and the surrounding bone, leading to root resorption.

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  • 24. 

    If there is a lot of root resorption we should do as following?

    • Stop activating appliance for at least 6 to 8 weeks.

    • Use heavy force to move the teeth

    • Periodontal disease

    • Filling caries.

    Correct Answer
    A. Stop activating appliance for at least 6 to 8 weeks.
    Explanation
    If there is a lot of root resorption, it is important to stop activating the appliance for at least 6 to 8 weeks. This is because continuing to apply force to the teeth can further exacerbate the root resorption and cause additional damage. Giving the teeth a break from the appliance allows for the resorption process to stabilize and potentially improve. It is not recommended to use heavy force to move the teeth in this situation, as it can worsen the root resorption. Periodontal disease and filling caries are unrelated to root resorption and do not address the issue at hand.

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  • 25. 

    The clinical feature of Class II division 1 malocclusion:?

    • Proclined upper incisors

    • Overjet reduce

    • ANB < 4degree

    • Anterior Crossbite

    Correct Answer
    A. Proclined upper incisors
    Explanation
    The clinical feature of Class II division 1 malocclusion is characterized by proclined upper incisors. This means that the upper front teeth are positioned more forward than normal, causing an increased overjet (horizontal distance between upper and lower front teeth) and a reduced ANB angle (a measurement used to assess the relationship between the upper and lower jaws). This malocclusion may also be associated with an anterior crossbite, where the upper front teeth bite behind the lower front teeth.

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  • 26. 

    In Class II div 2 malocclusion cases?

    • Overjet is reduced

    • Overjet normal

    • Overjet is increased

    • Overjet proclined

    Correct Answer
    A. Overjet is reduced
    Explanation
    In Class II div 2 malocclusion cases, the overjet is reduced. Class II div 2 malocclusion is characterized by a retruded lower jaw and an increased overbite. This causes the upper front teeth to overlap the lower front teeth, resulting in a reduced overjet.

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  • 27. 

    Adam Clasps ភាគច្រើនគេដាក់នៅលើធ្មេញណាមួយ?

    • Strong and healthy teeth

    • Big and painful teeth

    • Deep caries teeth

    • Periodontitis teeth

    Correct Answer
    A. Strong and healthy teeth
  • 28. 

    Which one is the cause of Anterior cross bite:?

    • Premature contact/ pseudo class III

    • Retained lower deciduous incisors

    • Small lower arch and very broad Upper arch

    • Missing lower teeth

    Correct Answer
    A. Premature contact/ pseudo class III
    Explanation
    Premature contact or pseudo class III is the cause of anterior cross bite. Anterior cross bite refers to a condition where the upper front teeth are positioned behind the lower front teeth when biting down. Premature contact occurs when there is an early contact between the upper and lower teeth, causing misalignment. Pseudo class III refers to a skeletal discrepancy where the lower jaw appears to be larger than the upper jaw, leading to a cross bite. Both of these conditions can result in an anterior cross bite.

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  • 29. 

    Which is correct for Rotation movement?

    • Tooth moves around the long axis.

    • Tooth moves towards the occlusal plane.

    • Tooth moves towards the socket

    • Force is required 100-125 gm.

    Correct Answer
    A. Tooth moves around the long axis.
    Explanation
    The correct answer is "Tooth moves around the long axis." This means that during rotation movement, the tooth rotates or pivots around its long axis, which is the imaginary line that runs from the root to the crown of the tooth. This movement is important for tasks such as chewing and grinding food. It is different from other types of movements, such as translation or tilting, where the tooth moves in a different direction.

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  • 30. 

    What is the clinical feature of fixed appliance?

    • Bonded bracket to the teeth

    • Fixed brackets to removable appliance

    • Bonded bracket to an appliance

    • The appliance that can be remove

    Correct Answer
    A. Bonded bracket to the teeth
    Explanation
    The clinical feature of a fixed appliance is the bonding of brackets to the teeth. This means that the brackets are attached to the teeth using dental adhesive, providing a stable and permanent attachment. This allows for precise control and manipulation of the teeth during orthodontic treatment. The brackets are not attached to a removable appliance or any other type of appliance, but directly to the teeth themselves.

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  • 31. 

    Which Classification of Malocclusion when the OJ is increase?

    • Class II div1

    • Class I

    • Class II div 2

    • Class III

    Correct Answer
    A. Class II div1
    Explanation
    When the overjet (OJ) increases, it means that the upper front teeth protrude further forward in relation to the lower front teeth. Class II div1 malocclusion is characterized by a prominent upper front teeth and a retruded lower jaw, causing an increased overjet. Therefore, class II div1 is the correct answer for this question.

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  • 32. 

    In class I malocclusion which is the most comment seen?

    • Rotation and crowding

    • Anterior Crossbite

    • Increase OJ

    • Deep bite

    Correct Answer
    A. Rotation and crowding
    Explanation
    In class I malocclusion, rotation and crowding are the most common issues seen. Rotation refers to the misalignment of teeth, causing them to turn or twist in the mouth. Crowding, on the other hand, occurs when there is insufficient space in the dental arch for all the teeth to fit properly. These two problems often go hand in hand and are frequently observed in class I malocclusion cases. Anterior crossbite refers to the misalignment of the upper and lower front teeth, increase OJ refers to an excessive overjet, and deep bite refers to an excessive vertical overlap of the front teeth, but these are not as commonly seen as rotation and crowding in class I malocclusion.

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  • 33. 

    A very high tongue in the roof of the mouth may causes ?

    • Wide upper arch & narrow lower arch

    • Cross bite

    • Crowding

    • Median diastema

    Correct Answer
    A. Wide upper arch & narrow lower arch
    Explanation
    A very high tongue in the roof of the mouth can cause a wide upper arch and narrow lower arch. This is because the tongue exerts pressure on the roof of the mouth, pushing it upwards and outwards. This can lead to a wider upper arch as the pressure expands the palate, while the lower arch remains narrow due to the lack of pressure from the tongue.

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  • 34. 

    Which malocclusion cause of jet increased?

    • Class II div 1

    • Class I

    • Class III case

    • Class II div 2

    Correct Answer
    A. Class II div 1
    Explanation
    Class II div 1 malocclusion is characterized by a protrusion of the upper front teeth and a retrusion of the lower jaw. This results in an increased overjet, which is the horizontal distance between the upper and lower front teeth. Therefore, Class II div 1 malocclusion is the correct answer for the question.

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  • 35. 

    What is the risk of orthodontic treatment?

    • Root resorption

    • Carries

    • Periodontal disease

    • Bone fracture

    Correct Answer
    A. Root resorption
    Explanation
    Root resorption is a potential risk of orthodontic treatment. This refers to the shortening or loss of the tooth roots due to the pressure exerted by braces or other orthodontic appliances. It occurs when the cells responsible for breaking down and rebuilding bone become overactive. Root resorption can lead to tooth instability, sensitivity, and even tooth loss in severe cases. Therefore, it is important for orthodontists to closely monitor patients during treatment to minimize the risk of root resorption.

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  • 36. 

    Why we use retainer after finishing orthodontic treatment?

    • Preventing teeth relapse

    • Allow teeth eruption

    • Allow growth change

    • Prevent 3rd molars eruption

    Correct Answer
    A. Preventing teeth relapse
    Explanation
    After finishing orthodontic treatment, the use of a retainer is important to prevent teeth relapse. Without a retainer, the teeth may gradually shift back to their original position over time. The retainer helps to maintain the new alignment achieved by the orthodontic treatment, ensuring that the teeth stay in their proper position. This helps to preserve the results of the treatment and prevent any regression or relapse of the teeth.

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  • 37. 

    Which is the common treatment for tooth rotation?

    • Derotation

    • Closing space

    • Extraction

    • Proclined upper incisors

    Correct Answer
    A. Derotation
    Explanation
    Derotation is the common treatment for tooth rotation. This involves using orthodontic techniques to correct the position of the rotated tooth and bring it back into alignment with the other teeth. This can be done using braces, retainers, or other appliances to gradually apply pressure and guide the tooth into its proper position. Closing space refers to closing gaps between teeth, extraction involves removing a tooth, and proclined upper incisors refers to the forward positioning of the upper front teeth.

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  • 38. 

    A 12 years old girl come to orthodontics department at the UHS to check her teeth she complain of her front teeth are sticky out both arches with tongue trust and her facial profile is more convexity . Which one is the most likely clinical feature of lips?

    • Incompetent lips

    • Competent lips

    • Everted lips

    • Inverted lips

    Correct Answer
    A. Incompetent lips
    Explanation
    The most likely clinical feature of lips in this case is incompetent lips. Incompetent lips refer to lips that are unable to maintain proper closure at rest, resulting in the front teeth sticking out and a more convex facial profile. This is consistent with the girl's complaint of her front teeth sticking out and her facial profile showing increased convexity.

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  • 39. 

    Which one is likely the OJ of class III malocclusion?

    • Overjet

    • Overjet 2-4 mm

    • Over jet >7mm

    • Overjet 3-5 mm

    Correct Answer
    A. Overjet
    Explanation
    The likely OJ of class III malocclusion is overjet. Class III malocclusion refers to a condition where the lower teeth are positioned in front of the upper teeth, causing an underbite. Overjet, on the other hand, refers to the horizontal distance between the upper and lower incisors. In class III malocclusion, the overjet is typically increased, meaning that the upper incisors are positioned further back compared to the lower incisors. Therefore, the correct answer is overjet.

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  • 40. 

    Rapid maxillary expansion (RME)is indicated in case of?

    • Small maxillary

    • Large maxillary

    • Short mandible

    • Long mandible

    Correct Answer
    A. Small maxillary
    Explanation
    Rapid maxillary expansion (RME) is indicated in cases of a small maxillary. This procedure is used to widen the upper jaw, which can help correct issues such as a narrow palate, crowded teeth, or a crossbite. By expanding the maxillary, it allows for proper alignment of the teeth and a better overall bite. This can lead to improved aesthetics and function of the mouth.

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  • 41. 

    The most comment risks of orthodontics tooth movement?

    • Root resorption

    • Caries

    • Gingivitis

    • Good digitation

    Correct Answer
    A. Root resorption
    Explanation
    Root resorption is a common risk associated with orthodontic tooth movement. This refers to the loss of root structure, which can weaken the tooth and lead to potential tooth loss if severe. The application of continuous pressure on the teeth during orthodontic treatment can cause the body to resorb the root structure. This risk is more prominent in individuals with pre-existing root abnormalities or those who undergo prolonged orthodontic treatment. Regular monitoring and early detection are essential to prevent severe root resorption and to ensure the overall success of orthodontic treatment.

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  • 42. 

    Clinical feature of anterior open Bite: ?

    • Long face

    • Lips competent

    • Deep bite

    • Cross bite

    Correct Answer
    A. Long face
    Explanation
    An anterior open bite is a condition where there is a gap between the upper and lower front teeth when the mouth is closed. A long face is a common clinical feature associated with this condition. This is because the excessive vertical growth of the face can cause the upper jaw to grow vertically, leading to an open bite. Therefore, a long face is a likely clinical feature of an anterior open bite.

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  • 43. 

    Which one is the best components for correct # 11 cross bite?

    • Palatal Z spring or T spring

    • Posterior bite plane

    • Anterior bite plane

    • Robert retractor

    Correct Answer
    A. Palatal Z spring or T spring
    Explanation
    The best components for correcting a #11 cross bite are the Palatal Z spring or T spring. These components are specifically designed to address cross bites by applying forces to the teeth in order to correct their alignment. The Palatal Z spring or T spring can help to gradually move the teeth into their correct positions, resulting in a proper bite alignment. The other options listed, such as the posterior bite plane, anterior bite plane, and Robert retractor, are not typically used for correcting cross bites and may be more appropriate for other dental issues.

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  • 44. 

    Tongue thrust is Effect of?

    • Proclination of anterior teeth with open bite

    • Retroclination of anterior teeth

    • Decreased over jet

    • Crowding

    Correct Answer
    A. Proclination of anterior teeth with open bite
    Explanation
    Tongue thrust refers to the abnormal forward movement of the tongue during swallowing, speech, or at rest. This can result in various dental issues, including proclination of anterior teeth with an open bite. When the anterior teeth are proclined, they are pushed forward, causing an open bite where the upper and lower front teeth do not touch when the mouth is closed. Therefore, the correct answer is proclination of anterior teeth with an open bite.

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  • 45. 

    Lower incline bite plane we make incline in?

    • 45 degree

    • 30 degree

    • 15 degree

    • 60 degree

    Correct Answer
    A. 45 degree
    Explanation
    The question is asking about the angle at which a lower incline bite plane should be made. The correct answer is 45 degrees. This means that when creating a lower incline bite plane, it should be inclined at a 45-degree angle.

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  • 46. 

    Tooth pain when we move it because of ?

    • Too much forces

    • Enamel caries

    • Gingivitis

    • Light force

    Correct Answer
    A. Too much forces
    Explanation
    Tooth pain when we move it is caused by too much forces. Excessive pressure or force on the tooth can cause it to become sensitive and painful when moved. This can happen due to various reasons such as grinding or clenching of teeth, biting on hard objects, or trauma to the tooth. It is important to address the underlying cause of the excessive forces to prevent further damage to the tooth and alleviate the pain.

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  • 47. 

    What is over bite?

    • Vertical overlapping of upper & lower anterior

    • Horizontal overlapping

    • Lack of vertical overlapping

    • Open bite

    Correct Answer
    A. Vertical overlapping of upper & lower anterior
    Explanation
    An overbite refers to the vertical overlapping of the upper and lower anterior teeth. This means that the upper front teeth cover a portion of the lower front teeth when the jaw is closed. This condition is commonly seen in individuals and can vary in severity. It is important to note that an overbite is different from an open bite, where there is no vertical overlapping of the front teeth.

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  • 48. 

    Rapid maxillary expansion is also known as?

    • Rapid palatal expansion

    • Distalization

    • Reproximation Split palate

    • Slenderization

    Correct Answer
    A. Rapid palatal expansion
    Explanation
    Rapid maxillary expansion refers to a procedure that widens the upper jaw to correct dental and skeletal issues. It is also known as rapid palatal expansion, as it involves expanding the palate to create more space in the mouth. Distalization, reproximation, split palate, and slenderization are not alternative names for rapid maxillary expansion, making "Rapid palatal expansion" the correct answer.

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  • 49. 

    The most comment reasons for relapse is?

    • Rotation and spacing

    • Good digitation

    • Full unit class I,II,III

    • Enough OB

    Correct Answer
    A. Rotation and spacing
    Explanation
    The correct answer is "Rotation and spacing." This suggests that the most common reasons for relapse are related to the rotation and spacing of teeth. This implies that if there is improper alignment or gaps between teeth, there is a higher chance of relapse occurring. It is important to address these issues during orthodontic treatment to prevent relapse and maintain the desired results.

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Quiz Review Timeline (Updated): Jul 12, 2023 +

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  • Current Version
  • Jul 12, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Mar 06, 2019
    Quiz Created by
    Uhsdental

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