Dentition, Occlusion, Eruption--Oh My!
This is the period in which primary teeth begin to exfoliate and permanent teeth are erupting.
What is mixed dentition?
These structures are present on the incisal ridge of permanent incisors when they erupt, but are usually worn away over time.
What are mamelons?
The primary units of structure of this tissue are keyhole-shaped rods made up of hydroxyapetite crystals. The rods are outlined with a fibrous sheath and cemented tightly together by interrod substance.
What is enamel?
This structure develops from the ectodermic layer. It begins as a thickening of the oral epithelium, and differentiates into an enamel-producing structure.
What is the enamel organ?
This bone lies inferior to the mandible and does not articulate with any other bone.
What is the hyoid?
This muscle of facial expression flattens the cheek.
What is the buccinator?
These vessels carry blood away from the heart and are relatively large.
What are arteries?
This division of the nervous system includes all nerves that extend from the brain and spinal cord.
What is the peripheral nervous system?
This malocclusion condition occurs when the patient bites down and the anterior maxillary teeth line up with the anterior mandibular teeth.
What is edge to edge (or end-to-end) bite?
This 5th cusp is sometimes present on a maxillary first molar.
What is the Cusp of Carabelli?
This tissue, also known as spongy bone, is surrounded by a sheath of denser bone and makes up most of the alveolar process of both the mandible and maxillae.
What is trabecular bone?
This mesodermal embryonic structure will give rise to both dentin and the pulp tissues of a tooth.
This cranial bone articulates with every other cranial bone.
What is the sphenoid bone?
What are the muscles of mastication?
These vessels carry blood back to the heart.
What are veins?
This cranial nerve is both motor and sensory and innervates all of the teeth and the oral cavity.
What is the Trigeminal nerve?
This classification of occlusion is present when the MB cusp of the maxillary first molar is distal to the B groove of the mandibular first molar.
What is Class III occlusion?
This structure develops from the lingual developmental lobe on central and lateral incisors.
What is the cingulum?
These structures are located on the ends of the periodontal ligaments which are embedded either in alveolar bone or cementum.
What are Sharpey's fibers?
These embryonic folds begin to develop around week 3 and will eventually give rise to most of the structures of the oral cavity.
What are the Pharyngeal arches? OR
What are the Branchial arches?
This bone's features include the zygomatic process, mastoid process, styloid process, and external auditory meatus.
What is the temporal bone?
Cervical lymph nodes may be felt when palpating this muscle.
What is the sternocleidomastoid?
Blood that has been oxygenated gets pumped from here to the aorta to be recirculated through the body.
What is the left ventricle?
This nerve is also known as CN-XII
What is the Hypoglossal nerve?
These are bony pockets in the jawbone in which tooth germs develop.
What are crypts?
This is the largest, widest cusp on a maxillary first molar.
What is the Mesiolingual cusp?
These fibers lie in a diagonal direction and attach the alveolar bone to the cementum near on the apical half of the root.
What are oblique fibers of the PDL?
This structure is the horizontal growth of Hertwig's epithelial root sheath and facilitates the development of single, double, or triple-rooted teeth.
What is the epithelial diaphragm?
This paired cranial bone is part of the TMJ and also is the origin of an important muscle of mastication.
What is the temporal bone?
This muscle of facial expression pulls the corners of the mouth up into a smile.
What is the zygomaticus major?
This is internal bleeding caused by injury to a blood vessel and may look like bruising.
What is a hematoma?
This nerve is responsible for general sensory input and taste from the posterior / of the tongue.
What is the Glossopharyngeal nerve?
This phenomenon is what happens to the roots of primary teeth when underlying permanent teeth begin to develop and apply pressure to the roots.
What is resorption?
This structure is a convexity around the periphery of the occlusal table of most posterior teeth. The mesial groove usually crosses over it.
What is the (mesial) marginal ridge?
These are cells that have been entrapped in cellular cementum.
What are cementocytes?
This lingual extension of the dental lamina will go through a bud, cap, and bell stage and eventually develop into a permanent tooth.
What is a successional lamina?
What is subluxation?
Another name for internal and external pterygoid muscles.
What are medial and lateral pterygoid muscles?
This intertwining network of veins is found near the maxillary tuberosity.
What is the pterygoid plexus?
This nerve innervates the mandibular posterior teeth and lingual gingiva as well as the mandibular anterior teeth and anterior facial gingiva.
What is the Inferior Alveolar nerve?
These teeth are non succedaneous.
What are the permanent molars
These developmental lines or grooves lie horizontally and are often visible near the CEJ on anterior teeth.
What are imbrication lines (or lines of imbrication)?
These cuboidal cells located at the periphery of the dental papilla are responsible for production of the dentin layer of a tooth.
What are odontoblasts?
When the inner enamel epithelium migrates during enamel secretion, it eventually reaches and binds with the outer enamel epithelium, forming this structure.
What is reduced enamel epithelium?
This feature on the temporal bone helps to prevent the mandible from slipping out of articulation in the posterior direction.
What is the post-glenoid process?
Contraction of this muscle causes adduction of the shoulder blades.
What is the trapezius?
This phenomenon involves a cross connection or looped interaction between blood vessels, which allows an alternate route of bloodflow in case of blockage.
What is an anastomosis?
This type of injection anesthetizes the tooth, periodontium, and gingiva of a single tooth.
What is the supraperiosteal injection?
This describes a malocclusion in which the primary mandibular molars are more posterior than the maxillary molars.
What is a distal step?
This structure is formed by the union of two triangular ridges, traversing the surface of a posterior tooth from the buccal to the lingual side.
What is a transverse ridge?
This is the 3rd main type of mucosa, along with specialized mucosa and lining mucosa.
What is masticatory mucosa?
During the bell stage of tooth development, these peripheral cells move toward the center of the dental papilla and secrete dentin matrix.
What are odontoblasts?
This feature on the temporal bone helps to prevent the mandible from slipping out of articulation in the anterior direction.
What is the articular eminance?
This muscle makes up the floor of the mouth and is involved in elevation of the mandible.
What is the mylohyoid muscle?
This circular configuration of vessels at the base of the brain is an example of an anastomosis.
What is the Circle of Willis?
If local anesthetic is accidentally injected into the parotid gland, it will anesthetize this nerve.
What is the facial nerve?