Muscles, Movements, and Occlusion in Dentistry Practice Test

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• In the described occlusion, the MB cusp of the mandibular first molar occludes in the embrasure area between the maxillary second premolar and first molar. This corresponds to which Angle classification?
• Which type of articulator is non-adjustable and accepts a single static registration?
• From which landmark does the masseter originate?
• How can a posterior crossbite affect occlusal function?
• Why is re-evaluation recommended after occlusal adjustments?
• What is the clinical aim of balanced occlusion in denture wearers?
• Which statement best describes how incisal guidance affects posterior occlusion in restorative planning?
• What is the primary purpose of an occlusal analysis using articulating paper?
• Which plane is defined as the plane established by a line connecting the buccal cusp tips and incisal edges of the mandibular teeth?
• The distobuccal cusp of the mandibular first molar occupies the embrasure between the maxillary second premolar and first molar. Which Angle Class does this describe?
• Which occlusal scheme distributes contact relations during lateral movements across multiple teeth?
• Where does the lateral pterygoid insert?
• What are the typical uses of an articulator in dental practice?
• Which muscle elevates the mandible and brings the teeth into contact (without noting closing movements)?
• Which articulator is semi-adjustable and allows limited adjustment to replicate recorded mandibular movements?
• Which term denotes the vertical dimension at rest?
• The posterior fibers of the temporalis primarily perform which action?
• Injury from excessive occlusal force applied to teeth with normal supporting tissues describes which condition?
• Which device is a caliper-like instrument used to record the spatial relationship of the maxillary arch?
• What sign may suggest temporomandibular joint disorders related to occlusion?
• What term describes the horizontal relationship of the maxillary teeth to the mandibular teeth in centric occlusion?
• What is the purpose of a stabilization splint in the management of occlusion-related disorders?
• What term describes posterior disclusion during certain movements, often achieved by canine guidance?
• What is the function of the superior head of the lateral pterygoid during chewing?
• Which material is commonly used for bite registration due to good dimensional stability and accuracy?
• Which term describes a stable jaw position in which posterior teeth provide primary support and load distribution?
• Which tooth is primarily responsible for discluding posterior teeth during excursive movements in canine guidance?
• Which mandibular depressor elevates the oral cavity and tongue?
• A premature contact that occurs when the mandible closes with the condyles in their optimum position is called what?
• Injury resulting in tissue changes within the attachment apparatus due to occlusal forces exceeding reparative capacity is defined as which?
• Which term refers to the overall mandibular movement pattern involving both anterior and posterior segments?
• Which procedure best describes the purpose of a facebow during mounting?
• Which muscle depresses the mandible and elevates the hyoid bone during swallowing?
• What term describes the vertical relationship of the maxillary teeth to the mandibular teeth in centric occlusion?
• Which term best describes the disclusion of posterior teeth during protrusive movement?
• The imaginary line extended through all the lingual cusp tips on the maxillary posterior teeth is known as which line?
• What are the two main TMJ components you should assess when evaluating occlusion-related symptoms?
• The imaginary line through all the lingual cusp tips on the maxillary posterior teeth is known as which line?
• Which muscle coordinates closing movements and brings the teeth to contact?
• What is incisal guidance and its effect on posterior wear?
• Protrusion of the mandible is produced by which muscle group?
• A key compatibility consideration when selecting bite registration material is that it should:
• Which option is NOT a line used to describe occlusal relationships?
• Which occlusion concept is designed to create stable, even contacts on both sides during function?
• The imaginary line through all the buccal cusp tips of the mandibular posterior teeth is called which line?
• Which term refers to solid and stable contacts in appropriate positions to distribute the load?
• What is the primary rationale for re-evaluating after occlusal adjustments?
• How does incisal guidance influence restorative planning for posterior teeth?
• Depression of the mandible includes which muscles (and gravity)?
• Which feature helps prevent deformation of the bite record when the impression is removed?
• Which muscle depresses the mandible and assists in opening the mouth?
• To avoid tooth displacement during closure, bite registration material should offer:
• What characteristic should bite registration material have before setting to minimize tooth displacement during closure?
• Which statement best describes a consequence of bruxism besides wear facets?
• Intercuspal position refers to which of the following definitions?
• Which attribute minimizes patient discomfort during bite registration application?
• What term describes the areas of occlusal contact with the opposing teeth in centric occlusion?
• What is the primary action of the medial pterygoid?
• Which factor most directly influences the posterior disclusion pattern during chewing?
• Which statement best describes the concept of occlusal prematurities?
• Which muscle is a primary elevator of the mandible that coordinates jaw closure?
• Bite registration materials should primarily exhibit which property to ensure occlusion accuracy after seating?
• Define centric relation.
• What is the difference between centric occlusion and habitual occlusion?
• Which occlusal relationship involves multiple contact relations between maxillary and mandibular teeth in lateral movements?
• Vertical Dimension of Occlusion (VDO) is defined as which distance?
• What is the purpose of bite registration material in occlusal analysis?
• Which muscles are typically most active during clenching in EMG studies?
• What is the effect of steep incisal guidance on posterior disclusion during protrusion?
• Which factor directly affects the arrangement of posterior cusp heights in order to protect posterior teeth?
• How should occlusal prematurities be addressed in practice?
• Elevation of the mandible is accomplished by which muscles?
• Define maximum intercuspation.
• Canine guidance in relation to lateral movement?
• Maximal intercuspal position is:
• Which property is not desirable in bite registration materials?
• An articulator described as average-value with a fixed condylar path set at 30 degrees is classified as which class?
• Which muscle elevates the mandible and assists protrusion?
• Which tooth contacts primarily occur in canine-guided lateral movement?
• What clinical signs would suggest occlusal trauma?
• Which occlusal feature is described as tall cusps and deep fossa, aiding stable occlusion?
• What does eccentric occlusion refer to?
• What is occlusal equilibration?
• What mandibular position is assumed when the head is upright and the muscles are in equilibrium?
• Occlusal prematurity is defined as a
• CO-CR discrepancy indicates clinically which of the following?
• Which movement is primarily produced by the lateral pterygoid?
• Which muscle is the primary elevator of the mandible?
• Which factor contributes most to accurate reproduction of bite relationships for prosthetic fabrication?
• Bruxism affects teeth and occlusion by which of the following?
• Which cusp and tooth are typically involved in Angle Class I occlusion as described in standard references?
• Describe the two phases of mandibular movement during early mouth opening.
• Retraction of the mandible is produced by which combination of muscles?
• The first 20-25 mm of mouth opening corresponds to which movement?
• Vertical Dimension at Rest (VDR) corresponds to which term?
• Which muscle depresses the hyoid bone?
• In lateral excursions, which concept causes disocclusion of non-working teeth on the working side?
• How is the intercuspal position established in natural dentition?
• The line extended through all the central developmental grooves of the maxillary and mandibular posterior teeth is called which line?
• Anterior guidance refers to the:
• Which Angle Class corresponds to the distobuccal cusp occupying the embrasure between the maxillary second premolar and first molar?
• The imaginary line extended through all the buccal cusp tips of the mandibular posterior teeth is called what?
• Occlusal contact on the side opposite the direction of mandibular movement is called which side?
• Which occlusal scheme describes the posterior teeth preventing excessive contact of the anterior teeth?
• Which Angle Class is associated with the MB cusp occluding in the central fossa area of the maxillary first molar?
• Besides elevation, the medial pterygoid contributes to which movement?
• In a healthy dentition with a canine-guided plan, what happens to posterior teeth during lateral movement?
• Disclusion on the working side describes separation of posterior teeth on the side where the mandible moves toward the:
• What outcome is expected when anterior repositioning appliances are used in TMD cases?
• Which term refers to a mechanical instrument representing the temporomandibular joints and jaws?
• Which material is known for high precision and is commonly used for occlusal bite records?
• Which statement correctly describes canine guidance and group function?
• Centric occlusion is achieved when the mandible is in which position?
• Which muscle assists lateral pterygoid during protrusion?
• Occlusal prematurities can be corrected in restorative dentistry by which methods?
• What is an anterior repositioning appliance and its clinical use?
• Which muscle is a mandibular elevator that is also active in mandibular protrusion?
• Distinguish occlusal contacts from functional contacts.
• Which muscle depresses the hyoid bone?
• Which nerve provides motor innervation to the muscles of mastication?
• Centric occlusion is defined as the:
• How can occlusal problems contribute to headaches?
• Which occlusal scheme is designed to ensure bilateral contacts, promoting stability in dentures?
• What is the primary overarching goal of bite registration materials in dentistry?
• Which muscle depresses the hyoid bone?
• Name one practical test to assess occlusal harmony in a patient with suspected occlusal problems.
• What is the freeway space (interocclusal rest space)?
• Neutral zone is defined as the position of the teeth when:
• Disclusion of posterior teeth during lateral movement helps to minimize which of the following?
• Which term describes the dynamic interaction of the mandibular anterior teeth with the maxillary anterior teeth?
• Injury from normal/abnormal occlusal forces applied to teeth with inadequate supporting tissue describes which condition?
• Which occlusal feature is described as tall cusps and deep fossa and helps maintain tooth position and function?
• Which statement best describes the relationship between natural dentition and denture occlusion in terms of stability strategies?
• Which cusps are classified as non-functional cusps in posterior occlusion?
• What is the role of the articular disc in the TMJ?
• Stable occlusion requirements are met when:
• The imaginary line extended through all the central developmental grooves of the posterior teeth is called which line?
• In natural dentition, which options may be used to minimize posterior wear?
• The anterior fibers of the temporalis primarily perform which action?
• Which statement describes the load distribution with posterior teeth bearing more load than anterior teeth?
• Which statement best describes hinge/rotational movement in jaw motion?
• What is another sign that may suggest temporomandibular joint disorders related to occlusion?
• Which listed muscle has no functional description provided in the material?
• After 25 mm when the mouth is excessively open, which movement predominates?
• Which structures separate the TMJ into superior and inferior compartments?
• The muscles that assist in depressing the mandible belong to which group?
• Translational Movement is defined as which of the following?
• Which factor governs posterior disclusion during protrusive and lateral mandibular movements?
• Clinical features of centric relation are best described as:
• Which cusps contact the opposing teeth during functional occlusion to help maintain vertical dimension in the posterior region?
• What is the clinical goal of occlusal therapy in patients with temporomandibular symptoms?
• Which term describes trauma that results from occlusal forces exceeding the reparative capacity of the attachment tissues?
• Which class of articulator would you choose to simulate complex jaw movements including protrusion and lateral movements?
• Disclusion on non-working side refers to the separation of posterior teeth on the side where the mandible moves toward the:
• Which is the most direct sign that occlusal adjustments have achieved harmony during function testing?
• Which mandibular depressor elevates the hyoid bone during deglutition?
• During protrusive movement, which teeth primarily experience disclusion?
• Clinical features of centric relation involve which hinge description?
• Centric relation is defined as:
• Which Angle Class is indicated when the MB cusp of the mandibular first molar occludes in the central fossa area of the maxillary first molar?
• The structures that control mandibular movement are divided into those influencing which portions of the mandible?
• How does denture occlusion differ from natural dentition in terms of achieving a stable bite?
• For accurate occlusal records, clinicians prioritize which characteristic?
• Centric relation is best described as:
• Which cusps are non-functional in standard occlusal function?
• Which statement best describes the function of a facebow?
• Which term describes occlusal interference that occurs when there is contact between the maxillary and mandibular posterior teeth on the same side as the direction the mandible has moved?
• Which articulator is fully adjustable and accepts three-dimensional dynamic registrations?
• Which cusps are classified as functional cusps in posterior occlusion?
• Begins at the tip of the lower cuspid and touches the buccal cusp tips of all the mandibular posterior teeth describes which curve?
• Maximal intercuspal position corresponds to:
• The mediolateral curve that contacts the buccal and lingual cusp tips of each side of the arch describes which curve?
• Which muscle elevates the hyoid and assists in opening the mouth?
• Which occlusal scheme is used for complete denture occlusion and achieves maximum teeth contact in all excursive positions?
• In a Group Function occlusal scheme, which of the following is true?
• Which muscle elevates the hyoid and assists in opening the mouth?
• In lateral excursive movement, which side is the working side?
• Which muscle is described as an elevator of the mandible and also participates in protrusion?
• Anterior guidance during sagittal movement results in which outcome?
• Which muscle brings the thyroid cartilage and hyoid bone closer together?
• Which term describes contact between the maxillary and mandibular posterior teeth on the same side as the direction the mandible has moved?
• How does bite opening affect bite force?
• Which of the following is NOT primarily involved in elevation of the mandible?
• Which term refers to the force transmitted axially through the teeth?
• Which bite registration option is easy to trim and comfortable but may have less dimensional stability than PVS?
• Name two common occlusal schemes in natural dentition and one key feature of each.
• Which of the following are considered accessory ligaments of the TMJ?
• Which statement accurately describes the data used by fully adjustable articulators to replicate mandibular movements?
• What is deflective occlusion?
• What is the goal of balanced occlusion in complete dentures?
• Which reason explains why a material with minimal dimensional change after setting is preferred for bite records?
• Which term describes the absence of posterior interference during occlusion?