The cause of death with opioid intoxication is 1. respiratory depression 2. cardiac arrest 3. terminal convulsions 4. oxygen apnea

The cause of death with opioid intoxication is respiratory depression

For anterior teeth restorations, which type of material is preferred due to its esthetics?
1) Amalgam
2) Glass ionomer
3) Composite resin
4) Dental cement

Composite resin is preferred for anterior teeth restorations due to its superior esthetic qualities, allowing for natural color matching.

A dental hygienist notices that a child has multiple untreated dental caries and appears malnourished. What should be the hygienist's first action?
1) Discuss with the child’s parents
2) Document the findings
3) Report the situation to child protective services
4) Schedule a follow-up appointment

As a mandated reporter, the hygienist must report suspected neglect to the appropriate authorities when a child’s well-being is at risk.

Common symptoms of hypertension include headaches, dizziness, and epistaxis (nosebleeds).

Which of the following has the highest sucrose content?
1) Ice cream
2) Canned juice
3) Cough syrups
4) Breakfast cereal

Cough syrups often contain high amounts of added sugars, including sucrose, to improve taste and mask other ingredients, making them higher in sugar content than the other options.

How should patient records be organized in a traditional paper filing system?

1. Alphabetically by patient surname
2. Chronologically by appointment date
3. By the amount paid for services
4. By the dentist who treated the patient

For easy retrieval, patient records are typically organized alphabetically, usually by the patient's last name.

For a young adult with tooth surface loss, which treatment option is best?
1) Restorative dentistry
2) Behavioral modification
3) Removal of iatrogenic causes
4) Surgery

Identifying and removing any causes of tooth surface loss, especially those related to dental treatments, is critical in addressing and preventing further damage.

What is more likely to happen to an interproximal composite filling rather than amalgam?
1) Fracture
2) Polymerization shrinkage
3) Marginal leakage
4) Discoloration

Composite materials are more prone to polymerization shrinkage, which can lead to gaps and sensitivity compared to amalgam.

The gas with greatest solubility in blood:

1. Nitrous oxide
2. Nitrogen
3. Oxygen
4. Hydrogen

Although the solubility of nitrous oxide in blood is less than other inhalational agents, its solubility is 35 times more than nitrogen and 15 times more than oxygen.

The gingival aspect of a pontic which touches the alveolar ridge should be:

1)  Convex only in the mesiodistal direction.

2) Concave faciolingually and convex mesiodistally.

3) Small and convex in all directions.

4) Fabricated to produce slight tissue compression.

A small and convex gingival surface facilitates hygiene maintenance and minimizes irritation to the underlying soft tissues.

Patients with untreated malignant hypertension typically survive for how long without treatment? 1) 1 year 2) 2 years 3) 5 years 4) 10 years

Untreated malignant hypertension has a poor prognosis, with a typical survival period of around one year due to severe complications.

Site of alpha-oxidation of fatty acid Is: 

alpha-oxidation of fatty acid occurs in Mitochondria

Why is it important to conduct a medication review for geriatric patients before dental treatment?
1) To identify affordable treatment options
2) To assess for drug interactions
3) To increase the number of visits
4) To speed up the treatment process

A medication review is essential to identify potential drug interactions that could affect treatment outcomes and management strategies.

The primary stress-bearing area of the maxillary complete denture is the:

1)  Hard palate.

2) Alveolar ridge.

3) Median palatal raphe.

4) Zygoma.

The hard palate provides a firm and stable support area for distributing occlusal forces in maxillary dentures.

A patient experiences pain and some gingival swelling in the anterior segment of the mandible. The mandibular lateral incisor has a shallow restoration, is tender to percussion and gives a positive response to the electric pulp tester. There is some mobility.
The most likely diagnosis is

1) acute apical abscess.
2) acute serous pulpitis.
3) lateral periodontal abscess.
4) acute suppurative pulpitis.

The symptoms described, including pain, gingival swelling, tenderness to percussion, and mobility of the tooth, suggest a lateral periodontal abscess. This condition often arises from periodontal disease or infection that affects the supporting structures of the tooth, leading to localized swelling and discomfort.

Morphine can be used in all the following conditions except: 

1) Head injury 
2) Asthma
3) Hypothyroidism 
4) Diabetes

Morphine is contraindicated in head injury for the following reasons:

Causes carbondioxide retention – this in turn increases intracranial tension 
Therapeutic doses can cause respiratory depression in head injury patients Vomiting, miosis and altered mentation caused by morphine can interfere with assessment of neurological status

Morphine should be avoided in those with bronchial asthma as it can precipitate an attack of asthma. But it is not contraindicated 

what %age of NaF is used in iontophoresis:
1.1%
2.2%
3.3%
4.4%

2% NaF is used in iontophoresis. This fluoride treatments brings about granular precipitation in dentinal tubules and reduces tubular diameter.

What is the recommended method for labeling the outside of a patient's dental record?

1. With the patient's full name, date of birth, and social security number
2. With the patient's initials and the first three digits of their phone number
3. With the patient's full name and a unique identifier
4. With the patient's full name and medical history

The outside cover of the chart should only display the patient's name to maintain confidentiality.

What should be included in a patient's medical history in dental records?
1) Patient's favorite food
2) List of systemic diseases and medications
3) Patient's hobbies
4) Financial status

A thorough medical history should include relevant health information that can impact dental treatment.

What is the purpose of using a biosafety cabinet during dental procedures?
1) To protect the patient from infection
2) To protect the dental staff from infection
3) To protect the environment from infection
4) To protect the instruments from contamination

A biosafety cabinet is used in the dental setting to protect the dental staff from infection by minimizing exposure to aerosols and splatter generated during procedures. It does not directly protect the patient or the environment but is part of a larger infection control strategy.

The inverse Square Law is concerned with the intensity of radiation; using type D film of 200mm target to film distance, the exposure time was 0.25s. What would be the exposure for the same situation with 400mm target to film distance?

1) 0.5s

2) 1.0s

3) 2.0s

4) 0.25s

According to the inverse square law, doubling the distance from the radiation source results in a fourfold decrease in intensity, thus requiring four times the exposure time ($I propto frac{1}{d^2}$). If the distance is doubled (x2), the intensity is quartered (x 1/4). To maintain the same film density, the exposure time must be quadrupled (x4). Original time: 0.25s. New time: $0.25 imes 4 = 1.0s$.

Rate limiting step of Kreb's cycle is catalysed by isocitrate dehydrogenase

What is the purpose of using a rubber dam during dental procedures?
1) To reduce the spread of infection
2) To improve patient comfort
3) To increase the visibility of the operative site
4) To reduce the risk of aspiration and ingestion of materials

While a rubber dam can also improve patient comfort and increase visibility of the operative site, its primary purpose is to isolate the operative site from the patient's oral fluids, thereby reducing the spread of infection between the patient and the dental team and protecting the patient's airway from aspiration.

Which immunoglobulin is present following a bacterial and viral infection?
1) IgA
2) IgD
3) IgM and IgG
4) IgE

Both IgM and IgG are present during and following infections; IgM appears first, while IgG is the most abundant antibody in circulation post-infection.

permanent maxillary First molar teeth normally has four root canals

WARPAGE OF AN IMPRESSION OCCURS: 1. If surface of compound is soft and inside is hard 2. If surface and inside of compound are hard 3. If the surface of compound is hard and inside Is soft 4. If surface and inside of compound are soft

Warpage of an impression compound occurs when the surface of the compound is hard and inside is soft

What is the most common reason for the failure of an approximal amalgam filling?
1) Marginal leakage
2) Secondary caries
3) Isthmus fracture
4) Overhang

Isthmus fractures are a common reason for the failure of approximal amalgam fillings, often due to stress and occlusal forces.

Highest analgesic effect is a feature of:
1) Ketamine
2) Thiopentone
3) Propofol
4) Etomidate

Ketamine is a very potent analgesic, providing maximum analgesia among all IV anaesthetics.

Which of the following is not true about casting gypsum-bonded investment material?
 
1) Its used for cast metal alloys
2) 50—65% of gypsum changes to form α-hemihydrate
3) The investment material is not heated above 700°C temperature
4) Heating above 700°C causes formation of sulphur dioxide from copper sulphate

Gypsum-bonded investments are used for gold alloys. The essential ingredients of the dental inlay investment employed with the conventional gold casting alloys are α-hemihydrate of gypsum, quartz or cristobalite. which are allotropic forms of silica. 

Ist investments flow contain the α-hemihydrate of gypsum. because greater strength is obtained. This gypsum
product serves as a binder to hold other ingredients together and provide rigidity. The strength of the investment is dependent on the amount of binder present.

A slight expansion takes place between 400°C and approximately 700°C (1292°F). and then a large contraction occurs. This later shrinkage is most likely caused by decomposition and release of sulphur gases, such as sulphur dioxide. 

This decomposition not only causes shrinkage but also contaminates the casting with the sulphides of the nonnohlc alloying elements, such as silver and copper. Thus, it is imperative that gypsum investments should not be heated above 700°C (1292°F). however, for gypsum products containing carbon, the maximum temperature should be 650°C (1202°F). In this way, proper ut and uncontaminated alloys are obtained.

In the context of jurisprudence, what is "malpractice"?

1) A legal term for any dental procedure

2) A form of patient consent

3) Professional negligence that results in harm to a patient

4) The act of providing free dental care

Malpractice refers to a situation where a dental professional fails to provide the standard of care expected in the profession, leading to injury or harm to the patient. It is a legal concept that can result in lawsuits and disciplinary action.

Which of the following is a key step in preparing a tooth for a stainless steel crown?
1) Reducing the occlusal surface.
2) Placing a rubber dam.
3) Applying a sealant.
4) Using a diamond bur to prepare the crown.

Before placing a stainless steel crown, the occlusal surface needs to be reduced to ensure proper fit and prevent interference with opposing teeth.

Which site is the most frequent for oral cancer?
1) Hard palate
2) Tongue
3) Lower lip
4) Floor of the mouth

The lower lip is the most common site for oral cancer overall, while the tongue is frequently affected within the oral cavity.

In which condition is the prothrombin time typically prolonged?
1) Hemophilia
2) Vitamin K deficiency
3) Use of salicylates or anticoagulants
4) Platelet disorders

Both salicylates and anticoagulants can interfere with blood clotting mechanisms and prolong prothrombin time.

For a pigmented fissure, what is the best way to diagnose caries?
1) Visual examination
2) Radiographic examination
3) Investigate the area with a round bur
4) Transillumination

Investigating the area with a round bur allows for direct assessment of the fissure and any underlying carious lesions.

Nickel is a common alloying element that significantly increases the ductility of base metals, such as iron and steel. 

A woman aged 48 years visits a dermatologist to have a mole removed. The patient tells her physician that she got allergic reaction to a local anaesthetic the last time she had undergone dental work. Investigation of the lady's dental records by her dentist discloses that the patient received procaine for a tooth extraction. Among the following alternatives, which drug would be suitable for the present procedure?

1. Benzocaine
2. Chloroprocaine
3. Tetracaine
4. Mepivacaine

Two classes of local anaesthetics exist namely: Esters and Amides. The rule of thumb describes that in case you are allergic to one drug in a given class (generally the ester class), you will also be allergic to other drugs of the same class. The lady received procaine which is an ester in the present case. Hence, we need to identify Amide in the list of answers. Mepivacaine is the only amide listed here.

Which antihypertensive agent is an ACE inhibitor?
1) Amlodipine
2) Losartan
3) Ramipril
4) Atenolol

Ramipril is an ACE inhibitor, while Amlodipine is a calcium channel blocker, Losartan is an ARB, and Atenolol is a beta-blocker.

What must a dentist disclose to a patient regarding the risks of a proposed treatment?

1) Only the most common risks
2) Only the most severe risks
3) All significant risks, including common and less common but serious risks
4) Only the risks that the dentist personally considers significant

A dentist must disclose all significant risks associated with a treatment, not just the most common or severe ones. This allows the patient to have a complete understanding of the potential outcomes and make an informed decision about their care.