Disinfection

• Impressions should be disinfected by immersing them in a glutaraldehyde solution before sending them to the lab to prevent the transmission of infectious agents. Proper disinfection ensures patient safety and compliance with health regulations. [Q3951]
• Hypochlorite should not be used to disinfect polyether and alginate impressions as it can distort these materials, compromising the accuracy of the impressions. It’s essential to use appropriate disinfectants to maintain the integrity of dental impressions. [Q3974]
• A 0.5% hypochlorite solution is recommended for surface disinfection in the dental practice to effectively eliminate pathogens without causing material damage. This concentration balances disinfectant efficacy and material safety. [Q3975]
• Impression disinfection is the responsibility of the dental practice, not the laboratory, to ensure that all impressions are properly sanitized before being sent out. This practice helps maintain infection control standards within the dental office. [Q4040]
• It is the dentist’s responsibility to disinfect impressions before sending them to the laboratory, ensuring that the risk of cross-contamination is minimized. This protocol is crucial for maintaining a sterile environment. [Q4207]
• Nickel-coated impression trays should not be disinfected with sodium hypochlorite to avoid corrosion, while aluminum trays also require caution with this disinfectant. Using appropriate disinfectants preserves the longevity and safety of dental instruments. [Q4431]
• Silicone impressions can be disinfected with glutaraldehyde if specified by the manufacturer, ensuring compatibility and preventing damage to the impression material. Always follow manufacturer guidelines for disinfection procedures. [Q4798]

Esthetics in Prosthodontics

• The width of the upper central incisors is often designed to equal the interpupillary distance for aesthetic harmony, enhancing the overall appearance of the prosthesis. This approach aligns dental restorations with facial features. [Q5260]
• Vital and home bleaching involves using custom trays to whiten teeth at home, providing a convenient and effective method for patients to achieve a brighter smile. This technique is widely accepted for its simplicity and results. [Q5372]
• Walking bleach is a technique for internally bleaching non-vital teeth, offering an effective solution for discolored teeth that have undergone root canal treatment. This method targets the discoloration from within. [Q5377]
• Composite resin is the best restorative material for a class 4 cavity in a central incisor due to its superior aesthetic properties, which closely mimic natural tooth structure. This material provides both strength and beauty in restorations. [Q5556]
• Preparing the incisal edge for ceramic veneers can provide better retention and aesthetics, ensuring a more natural and long-lasting restoration. This preparation technique is crucial for the success of veneer placement. [Q5827]

Fabrication Techniques

• Impression compound is a thermoplastic material used in dental impressions, which becomes moldable when heated and solidifies upon cooling. This property makes it versatile for capturing detailed impressions. [Q4038]
• Impression compounds are thermoplastic and become moldable when heated, allowing precise and detailed dental impressions. This characteristic makes them ideal for various impression techniques. [Q4039]
• Impression plaster is stable in dimension and rigid, and small undercuts are not contraindications, making it suitable for accurate and reliable impressions. Its dimensional stability ensures precise replication of oral structures. [Q4041]
• Impression plasters are not flexible; they are rigid materials used for capturing accurate dental impressions. Their rigidity provides stability and precision in the impression-taking process. [Q4042]
• An incorrect polymer-monomer ratio in the acrylic dough can cause granular porosity in the thin section of the denture, compromising its strength and durability. Proper ratios are essential for high-quality denture fabrication. [Q4146]
• Insufficient acrylic packed into the flask can cause contraction porosity throughout the denture, leading to weaknesses and potential fractures. Ensuring adequate material use is critical for durable denture construction. [Q4170]
• Light body elastomers are dental impression materials used for capturing fine details, ensuring accurate reproduction of the oral cavity. These materials are essential for precision in prosthodontic procedures. [Q4246]
• Sodium is the major component in alginate, contributing to its properties as a dental impression material. This composition ensures its effectiveness and reliability in capturing dental impressions. [Q4812]
• Heat-curing acrylic resin is preferred for special trays due to its durability and stability, but other materials can also be used depending on specific requirements. This flexibility allows for tailored solutions in tray fabrication. [Q4821]
• For proper fixation, the amount of fixative used should be ten times the size of the specimen, ensuring thorough preservation and preventing degradation. This guideline is crucial for maintaining sample integrity. [Q4906]
• Impression compound is a thermoplastic material that softens upon heating and hardens upon cooling, making it ideal for capturing detailed impressions in various dental applications. Its versatility and reliability make it a preferred choice. [Q5044]
• Improper articulator adjustment is a common cause of occlusal error, highlighting the importance of accurate equipment setup in dental prosthesis fabrication. Proper adjustment ensures precise occlusion and patient comfort. [Q5407]
• Occlusal discrepancies can be adjusted on a cast before the patient arrives, allowing for preliminary corrections and ensuring better fit during the patient visit. This proactive approach enhances treatment efficiency. [Q5427]
• Fit and occlusion on the model can be checked before trialing on the patient, providing an opportunity to make necessary adjustments in advance. This practice improves the accuracy and success of the final prosthesis. [Q5428]
• The wash impression technique is used to capture fine details in an impression, ensuring a high level of accuracy in the final dental restoration. This method is essential for precision in prosthodontic procedures. [Q5472]
• The best polymerization temperature for heat-cured acrylic is 100°C, ensuring optimal material properties and durability in dental prostheses. Correct temperature control is vital for achieving high-quality results. [Q5553]
• Finger rests provide stability during impression making, ensuring accurate and consistent impressions by preventing movement. This feature is crucial for achieving precise dental restorations. [Q5564]
• A mucostatic impression captures the soft tissue in its natural, uncompressed state, providing an accurate representation of the oral anatomy. This technique is essential for creating well-fitting dentures. [Q5647]
• Vinyl polysiloxane is the most commonly used impression material for crown and bridge work, offering excellent detail reproduction and dimensional stability. Its properties make it ideal for complex restorative procedures. [Q5681]
• A mucostatic impression captures the soft tissue in its natural, uncompressed state, ensuring an accurate fit for dental prostheses. This method is preferred for its precision and comfort. [Q5725]
• Stops in a special tray ensure the uniform thickness of the impression material by preventing it from being over-pressed, which is critical for achieving accurate and consistent impressions. This feature is essential for high-quality dental work. [Q5747]
• Wedging separates teeth slightly before filling to create proper contact points and to prevent damage to adjacent teeth, ensuring effective and precise dental restorations. This technique is fundamental for optimal restorative outcomes. [Q5755]
• Heavy body impression material is typically used with closed-fitting trays to capture fine details, providing a detailed and accurate impression of the oral cavity. This material is essential for precise prosthodontic work. [Q6015]

Health and Safety

• The minimum control radius area for an X-ray machine > 70 Kv is 3 meters, ensuring safety by minimizing exposure to radiation. This guideline is critical for maintaining a safe dental practice environment. [Q4018]
• Hepatitis B is most likely to be acquired after a needlestick injury, underscoring the importance of vaccination and adherence to safety protocols. Preventive measures are essential for protecting dental professionals. [Q4383]
• Nickel in partial dentures can indeed cause a rash in some patients, though it typically does not cause an oral reaction. Identifying and managing allergies is important for patient safety and comfort. [Q4432]
• Tray paper lining should be disposed of in the waste bag, ensuring proper waste management and maintaining hygiene standards in the dental practice. Correct disposal practices are essential for infection control. [Q5299]
• Dental wedges should be disposed of in a biohazard container to prevent cross-contamination and ensure safe handling of potentially infectious materials. Proper disposal is crucial for maintaining a sterile environment. [Q5855]

Infection

• Disposable gloves are the most effective device for preventing cross-infection, providing a barrier against pathogens and reducing the risk of disease transmission. Their use is a standard practice in dental infection control. [Q4379]
• NET instruments are preferred over stainless steel due to their higher corrosion resistance, making them more durable and reliable in a clinical setting. This quality ensures long-term performance and safety. [Q4424]

Occlusion

• Recording the protrusive relation helps adjust the condylar guides of the articulator to match the patient’s condylar paths. This ensures accurate simulation of mandibular movements during prosthodontic procedures. [Q0084]
• Ensuring that the interocclusal distance is physiologically acceptable is crucial when increasing occlusal height. Proper interocclusal distance maintains comfort and function post-treatment. [Q0086]
• A new centric relation record is necessary when increasing the occlusal vertical dimension. This adjustment ensures stability and proper alignment in the patient’s bite. [Q0090]
• Reconstructing the occlusal anatomy is primarily based on functional factors to ensure proper mastication and occlusal balance. Functionality in occlusion ensures effective chewing and overall oral health. [Q0131]
• A kinematic face bow is used to accurately locate the hinge axis of the mandible, which is critical for proper occlusal alignment in prosthodontics. Correct hinge axis location aids in creating precise dental restorations. [Q0179]
• The primary consideration is whether the interocclusal distance will be physiologically acceptable after treatment. This ensures that patients can maintain proper oral function and comfort. [Q0273]
• Incisal guidance on the articulator simulates the horizontal and vertical overlap of the incisors. This helps in achieving accurate alignment and function of the anterior teeth. [Q0304]
• All these factors control occlusion to ensure proper function and balance. Effective occlusion management is essential for the overall success of dental treatments. [Q0312]
• A face bow transfers the spatial relationship of the maxillary arch to the temporomandibular joint, aiding in accurate articulation. This transfer is crucial for creating well-fitting dentures and other prosthetics. [Q0775]
• Gothic arch tracing is not used in the determination of vertical dimension. Instead, other methods like the Willis gauge and two dots technique are preferred. [Q0817]
• Protrusive movements in wax should not be perforated to maintain the integrity of the occlusal record. This ensures that the records are accurate and reliable for treatment planning. [Q0870]
• In an arcon articulator, the condylar element is located in the lower compartment, mimicking the natural joint relationship more accurately. This design provides more realistic simulation of jaw movements. [Q0878]
• The incisor pin helps in setting and maintaining the horizontal and vertical overlap (incisal guidance) during articulation. Accurate incisal guidance is essential for functional and aesthetic restorations. [Q0928]
• To achieve balanced occlusion with increased condylar guidance, you should increase the compensatory curve. This adjustment helps in distributing occlusal forces evenly. [Q0952]
• To ensure posterior teeth contact during protrusion, increasing the compensatory curve can help achieve balanced occlusion. Proper posterior contact is crucial for functional bite alignment. [Q0988]
• A facebow is used to determine the occlusal plane when recording denture relationships. Accurate occlusal plane determination is essential for the success of dentures. [Q3059]
• A simple hinge articulator is not sufficient to record the condylar path accurately. More sophisticated articulators are needed for precise mandibular movement replication. [Q3127]
• Balanced occlusion is characterized by the simultaneous contact of all teeth during occlusion. This ensures stability and even distribution of occlusal forces. [Q3335]
• The condylar angle is typically measured between the condylar path and the occlusal plane. Accurate measurement of this angle is crucial for proper prosthodontic adjustments. [Q4960]
• The condylar axis is a line between the mandibular condyles that allows for hinge movement. Understanding this axis is fundamental for accurate occlusal alignment. [Q4961]
• Centric relation is the most stable and reproducible position for registering jaw relationships, making option 1 correct. Other options misrepresent the best position. Accurate centric relation recording is essential for successful prosthodontic outcomes. [Q5059]
• Occlusal relationships can be checked outside the patient’s mouth on an articulator. This allows for detailed analysis and adjustments without patient discomfort. [Q5429]
• A metallic sound in dentistry often indicates high occlusal contact on a metal restoration. Identifying and correcting these contacts is important for patient comfort and restoration longevity. [Q5507]
• Balanced articulation refers to harmonious contact between upper and lower teeth during all jaw movements. This balance is vital for functional and aesthetic outcomes in prosthodontics. [Q5646]
• Occlusal contacts can be checked outside the patient’s mouth on an articulator. This enables precise adjustments and better control over the final prosthodontic result. [Q5818]
• Both methods are used in dentistry to measure the vertical dimension. Accurate vertical dimension measurement is crucial for successful prosthodontic treatment. [Q6105]

Other

• Assessing tooth wear is done by comparing to standardized wear indexes. This helps in identifying the severity and pattern of wear for appropriate management. [Q3959]
• Ligaments are bands or cords of fibrous tissues connecting bones or cartilages. They provide stability and support to the skeletal system. [Q4245]
• Enamel defects are a common oral manifestation of coeliac disease. These defects can affect the aesthetics and function of teeth. [Q4483]
• The recommended fluoride dose in toothpaste is 1100 ppm. This concentration is effective in preventing dental caries. [Q4723]
• Silicophosphate can be used as a temporary restoration, but not exclusively. It has properties suitable for various dental applications. [Q4799]
• The frequency of sugar intake is more critical in causing dental caries than the total amount. Reducing the frequency helps in minimizing the risk of caries. [Q4905]
• Cementum is typically thicker at the apex of the root compared to the cervical region. This thickness variation supports the tooth structure and attachment. [Q4950]
• The condyle is the most common site for mandibular fractures in children. Proper diagnosis and treatment are essential to prevent complications. [Q4963]
• The diameter of a scaler varies depending on the type and manufacturer. This variation allows for different clinical applications and techniques. [Q4980]
• This position is optimal for extracting upper molars, providing the best access and visibility. Proper chair positioning enhances the efficiency and comfort of dental procedures. [Q5041]
• Third molars are often ignored in design discussions due to their position and function. Their removal is sometimes necessary for orthodontic and prosthodontic treatments. [Q5272]
• A rubber dam is used for isolation during restoration of a broken-down tooth. This isolation ensures a dry and clean working field. [Q5284]
• Trismus refers to limited mouth opening caused by a spasm of the muscles of mastication. It can result from trauma, infection, or other conditions. [Q5310]
• The shifting technique using two periapical radiographs can determine the palatal or buccal position of the maxillary canine. This technique is essential for accurate diagnosis and treatment planning. [Q5321]
• The use of quick-setting impression material depends on the clinical situation. It offers convenience and speed in specific cases. [Q5350]
• Vital teeth may not respond to vitality tests immediately after an injury. This delayed response can be due to transient pulpitis or other factors. [Q5373]
• Not placing a wedge can result in improper tooth separation during restorative procedures. Proper separation is necessary for achieving tight contacts and preventing overhangs. [Q5382]
• MMR (Measles, Mumps, Rubella) is a live attenuated vaccine. Live vaccines use a weakened form of the virus to stimulate immunity. [Q5421]
• The ‘cracked cup’ sound indicates a vertical root fracture. Early detection is crucial for managing and treating the fracture. [Q5483]
• E in the Palmer system denotes a deciduous tooth. This notation system helps in identifying and charting primary teeth. [Q5485]
• Duraphat fluoride varnish contains approximately 5% fluoride (which corresponds to 0.1 in decimal form). This high fluoride concentration helps in remineralizing enamel. [Q5517]
• The all-etch technique involves applying etchant to both enamel and dentin simultaneously. This method enhances the bond strength of dental adhesives. [Q5540]
• The amount of gas in the lungs at the end of tidal volume is approximately 1500 mL. This residual volume is crucial for continuous gas exchange. [Q5541]
• Sodium hypochlorite is commonly used as an irrigating agent at a concentration of 0.025. It effectively disinfects the root canal system during endodontic treatment. [Q5585]
• The concentration of phosphoric acid used for acid etching is typically 37%. This etching process enhances the adhesion of restorative materials to tooth structure. [Q5586]
• Radiographic examination helps to distinguish between abrasion and abfraction. Accurate diagnosis is essential for appropriate treatment planning. [Q5592]
• Adhesion occurs between different molecules, while cohesion occurs between similar molecules. Understanding these forces is fundamental in dental material science. [Q5594]
• The Dryopithecus pattern refers to a specific cusp and groove pattern found in the mandibular first permanent molar. This pattern is significant in dental anthropology and occlusion studies. [Q5598]
• Identification and elimination of the cause is the first step in managing a patient with erosion to prevent further damage. Effective management includes dietary modifications and protective restorations. [Q5605]
• Flavored topical anesthesia is a gel with added flavor to improve patient acceptance. This enhancement can make dental procedures more pleasant for patients. [Q5606]
• Glass ionomer is preferred for patients with dental erosion due to its fluoride release and adhesion to dentin. This material helps in protecting and remineralizing eroded tooth surfaces. [Q5640]
• Glass ionomer is preferred for treating abfraction lesions because it bonds well to dentin and releases fluoride. This choice supports the structural integrity and health of the affected tooth. [Q5641]
• Score 3 in the Smith and Knight index indicates an enamel and dentin fracture without pulp exposure. This scoring helps in assessing the extent of dental trauma. [Q5788]
• In diabetic coma, both ketones and glucose levels are increased due to ketoacidosis. Prompt medical intervention is essential to manage this life-threatening condition. [Q5795]
• A handpiece and bur are used to adjust occlusal planes. These tools allow for precise modification of tooth structure to achieve proper occlusion. [Q5802]
• Support should be taken from the adjacent tooth to ensure stability while restoring a tooth. This technique helps in achieving accurate and secure restorations. [Q5842]
• One that mimics breastfeeding is best for infants to avoid nipple confusion. Proper feeding bottles support natural feeding habits and oral development. [Q5964]
• A dentist fabricates dentures. This process involves multiple steps to ensure a proper fit and function for the patient. [Q6095]