Interocclusal Record (Bite Registration Record)
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Questions and Answers

What is the primary objective of an interocclusal record?

  • To ensure proper intercuspation of the teeth in porcelain
  • To capture an accurate impression of the patient's bite
  • To create proper contours and alignment of the metal substructure of the restoration
  • To transfer the relation between the upper and lower dental arches to an articulator (correct)

    • Which factor does NOT influence the accuracy of an interocclusal record?

  • The reliability of the mandibular position
  • The recording technique used
  • The shade of the recording material (correct)
  • The material properties of the recording material

    • According to Dawson's criteria, what is a requirement for accurate interocclusal records?

  • The recording material should displace soft tissues
  • The recording material should be sensitive to temperature changes
  • The recording material should be rigid and inflexible
  • The recording material should cause minimal tooth movement (correct)

    • What is the purpose of mounting casts on an articulator using an accurate interocclusal record?

    <p>To allow the technician to create proper contours and alignment of the restoration</p> Signup and view all the answers

    What is a potential consequence of failing to capture an accurate interocclusal record?

    <p>The need for remounting casts and possible refabrication of the prosthesis</p> Signup and view all the answers

    Which of the following is NOT listed as a factor influencing the accuracy of an interocclusal record?

    <p>Patient's age</p> Signup and view all the answers

    What is the purpose of an interocclusal record in relation to the articulator?

    <p>To transfer the patient's bite registration to the articulator</p> Signup and view all the answers

    Which of the following materials can be used for making an interocclusal record?

    <p>All of the above</p> Signup and view all the answers

    During lateral movement of the mandible in Unilateral Balanced Occlusion, where are the teeth in contact?

    <p>Only on the working side</p> Signup and view all the answers

    Which type of occlusion maintains balanced and equal contacts throughout the entire arch during all mandibular excursions?

    <p>Bilateral Balanced Occlusion</p> Signup and view all the answers

    In natural dentition, which type of occlusion is considered necessary for denture stability?

    <p>Bilateral Balanced Occlusion</p> Signup and view all the answers

    Which type of occlusion involves teeth on the balancing side being free from any contact during lateral movement?

    <p>Unilateral Balanced Occlusion</p> Signup and view all the answers

    What is the concept called when maxillary and mandibular teeth share and distribute forces during lateral mandibular movement in Unilateral Balanced Occlusion?

    <p>Group Function</p> Signup and view all the answers

    In Bilateral Balanced Occlusion, where do simultaneous contacts occur during mandibular movements?

    <p>On both working and balancing sides</p> Signup and view all the answers

    Which type of occlusion is characterized by rare presence in natural dentition but essential for denture stability?

    <p>Bilateral Balanced Occlusion</p> Signup and view all the answers

    What distinguishes Unilateral Balanced Occlusion from Bilateral Balanced Occlusion in terms of contact during lateral movement?

    <p>'Teeth on the balancing side are free from any contact' in Unilateral vs. 'Simultaneous contact on both working and balancing sides' in Bilateral</p> Signup and view all the answers

    What is the purpose of canine guided occlusion during lateral mandibular movements?

    <p>To cause disclusion of all posterior teeth on the working and balancing sides</p> Signup and view all the answers

    In Class I occlusion, how do the maxillary and mandibular first permanent molars relate to each other?

    <p>The mesiobuccal cusps of the maxillary molar occlude with the mesiobuccal groove of the mandibular molar</p> Signup and view all the answers

    What is the defining characteristic of Class II occlusion?

    <p>The mandibular first permanent molar is positioned posterior to the normal Class I position</p> Signup and view all the answers

    What is the defining characteristic of Class III occlusion?

    <p>The mandibular first permanent molar is positioned anterior to the normal Class I position</p> Signup and view all the answers

    What type of interocclusal record is taken when the teeth are in maximum intercuspation?

    <p>Centric intercuspal record</p> Signup and view all the answers

    What type of interocclusal record is taken when the mandible is in its most retruded position?

    <p>Centric interocclusal record</p> Signup and view all the answers

    In fixed prosthodontics, which interocclusal record is typically needed?

    <p>Centric interocclusal record</p> Signup and view all the answers

    What is the abbreviation used for the maximum intercuspation position?

    <p>CO</p> Signup and view all the answers

    What is the primary purpose of an articulator?

    <p>All of the above</p> Signup and view all the answers

    Which of the following is NOT a use of an articulator?

    <p>To perform root canal treatment</p> Signup and view all the answers

    Which type of articulator can only open and close in a fixed horizontal axis?

    <p>Non-adjustable articulator</p> Signup and view all the answers

    Which type of articulator has adjustable condylar paths and incisal guide tables?

    <p>Semi-adjustable articulator</p> Signup and view all the answers

    In an Arcon articulator, where is the condylar element (condylar spheres) attached?

    <p>Lower member</p> Signup and view all the answers

    Which type of articulator resembles the temporomandibular joint (TMJ)?

    <p>Arcon articulator</p> Signup and view all the answers

    What is the purpose of adjustable lateral condylar paths in a semi-adjustable articulator?

    <p>To simulate extreme lateral movements of the jaw</p> Signup and view all the answers

    Which feature of a semi-adjustable articulator allows for simulating intra-border tooth movements?

    <p>All of the above</p> Signup and view all the answers

    What is the tooth-to-tooth relation called when the mandible closes in centric relation?

    <p>Maximum Intercuspation (MI)</p> Signup and view all the answers

    In what relation do the condyles need to be for Maximum Intercuspation to coincide with Centric Occlusion?

    <p>In centricity</p> Signup and view all the answers

    What is the bone-to-bone relation between the maxilla and the mandible called?

    <p>Centric relation (CR)</p> Signup and view all the answers

    Which type of occlusion is considered as an eccentric position when the condyles are out of centricity?

    <p>Habitual or physiological occlusion</p> Signup and view all the answers

    What is referred to as the occlusion of teeth as the mandible closes in centric relation?

    <p>Centric Occlusion (CO)</p> Signup and view all the answers

    When does Maximum Intercuspation not coincide with Centric Occlusion?

    <p>When condyles are out of centricity</p> Signup and view all the answers

    What is the position referred to when low percentage of population have their maximum intercuspation coincide with Centric Occlusion?

    <p>Ideal occlusion</p> Signup and view all the answers

    Impression plaster is commonly used as an ideal bite registration material due to its ease of manipulation.

    <p>False</p> Signup and view all the answers

    Bite registration waxes have a high coefficient of thermal expansion and low resistance to closure.

    <p>False</p> Signup and view all the answers

    Dimensionally inaccurate bite registration materials may interfere with active and passive movements.

    <p>True</p> Signup and view all the answers

    Impression plaster modified with accelerators has a setting expansion that makes it ideal for bite registration purposes.

    <p>False</p> Signup and view all the answers

    An accurate bite registration material should have adverse effects on oral tissues to ensure proper recording.

    <p>False</p> Signup and view all the answers

    The accuracy of jaw relation records should only be checked on the casts, not in the mouth.

    <p>False</p> Signup and view all the answers

    A rigid registration material before setting can help prevent displacement of teeth or mandible during closure.

    <p>True</p> Signup and view all the answers

    Verifiability of records is not an important characteristic for an ideal bite registration material.

    <p>False</p> Signup and view all the answers

    The mandibular movement can be broken down into translation and rotation components.

    <p>True</p> Signup and view all the answers

    The mandibular movement is easier to understand when broken down into sagittal, horizontal, and vertical planes.

    <p>False</p> Signup and view all the answers

    In the sagittal plane, the mandible can only perform translation movements.

    <p>False</p> Signup and view all the answers

    Rotation in the horizontal plane occurs around several horizontal axes.

    <p>False</p> Signup and view all the answers

    The initial hinging motion in the sagittal plane happens between the condyle and the temporal bone.

    <p>False</p> Signup and view all the answers

    During translation in the sagittal plane, the lateral pterygoid muscle moves the condyle-disk assembly forward.

    <p>True</p> Signup and view all the answers

    Mandibular movement in the frontal plane involves rotation around a horizontal axis.

    <p>True</p> Signup and view all the answers

    The range of rotation in the sagittal plane is limited due to structures anterior to the zygomatic arch.

    <p>False</p> Signup and view all the answers

    Zinc oxide eugenol paste is known for its high degree of flexibility after setting.

    <p>False</p> Signup and view all the answers

    Acrylic resin is frequently used for single stop centric occlusion records because it is both accurate and rigid after setting.

    <p>True</p> Signup and view all the answers

    Elastomers like Luxabite are difficult to manipulate and offer high resistance to closure.

    <p>False</p> Signup and view all the answers

    Addition silicones among elastomers show high distortion during setting due to their polymerization reaction.

    <p>False</p> Signup and view all the answers

    Zinc oxide eugenol paste has the disadvantage of not adhering well to carriers.

    <p>False</p> Signup and view all the answers

    Acrylic resins are dimensionally stable due to minimal polymerization shrinkage.

    <p>False</p> Signup and view all the answers

    Trimming flash around teeth is unnecessary when using zinc oxide eugenol paste for recording.

    <p>False</p> Signup and view all the answers

    Elastomers like Luxabite are best known for their high errors and difficulty in trimming without distortion.

    <p>False</p> Signup and view all the answers

    Recording material placed between teeth in this case often prevents casts from maximal intercuspation.

    <p>True</p> Signup and view all the answers

    An interocclusal record is registered at a decreased OVD.

    <p>False</p> Signup and view all the answers

    An interocclusal record is needed when a segmental restorative is planned and there are sufficient remaining teeth for hand articulation of the casts.

    <p>False</p> Signup and view all the answers

    An interocclusal record is not required when a unilateral fixed partial denture involving terminal teeth is prepared.

    <p>False</p> Signup and view all the answers

    Interocclusal record is captured before the construction of a bit rim when fixed partial denture planned for a patient involves missing posterior teeth and needs to restore the anterior teeth.

    <p>True</p> Signup and view all the answers

    Artificial teeth are less compatible with mandibular movements compared to occlusion rims.

    <p>False</p> Signup and view all the answers

    Interocclusal records are not influenced by the amount and equalization of pressure during the procedure.

    <p>False</p> Signup and view all the answers

    Comfort of the patient has no impact on the stability and compatibility of record bases during interocclusal record procedures.

    <p>False</p> Signup and view all the answers

    An interocclusal record with multiple points of references made by styli or cusp tips is more satisfactory than with occluding surfaces of wax or non-cusp form teeth.

    <p>True</p> Signup and view all the answers

    The most widely used material to record the occlusal relation is blue base plate wax.

    <p>False</p> Signup and view all the answers

    During the procedure of recording the occlusal relation, the patient is asked to mold the wax on the buccal area with his tongue.

    <p>False</p> Signup and view all the answers

    In Dawson Technique, a Bimanual manipulation technique is used for recording centric relation.

    <p>True</p> Signup and view all the answers

    The recording material should be placed over the area beyond the prepared teeth for an interocclusal record.

    <p>False</p> Signup and view all the answers

    Elastomer is applied by softening it first and then asking the patient to bite on it directly without any guidance.

    <p>False</p> Signup and view all the answers

    For an accurate interocclusal record, it is important to trim the excess material after it has completely set in the patient's mouth.

    <p>True</p> Signup and view all the answers

    The purpose of mounting casts on an articulator using an accurate interocclusal record is mainly for aesthetic purposes.

    <p>False</p> Signup and view all the answers

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