Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Oral Anatomy 2
Oral pathology chapter 6 7
| Question | Answer |
|---|---|
| The final stages of odontogenesis include the stage of __________, or secretory stage, during which the enamel, dentin, and cementum are secreted in successive layers. | APPOSITION |
| The __________ is reached when the matrices of the hard dental tissue types subsequently fully mineralize. | MATURATION STAGE |
| The disintegration of the basement membrane allows the preameloblasts to contact the newly formed predentin, which induces the preameloblasts to differentiate into _______ | AMELOBLASTS |
| After differentiation, the ameloblasts begin amelogenesis, or the apposition of ________, laying it down on their side of the now disintegrated basement membrane. | ENAMEL MATRIX |
| The enamel matrix is secreted from _______, an angled part of each ameloblast that faces the disintegrating basement membrane created as the ameloblasts move away from the dentin interface. | TOMES PROCESS |
| Continued apposition of both types of dental matrix becomes regular and rythmic, as the cellular bodies of both the odontoblasts and ameloblasts retreat away from the ____________ forming their perspective tissue types. | DENTINOENAMEL JUNCTION |
| The odontoblasts, unlike the amelobalsts, will leave attached cellular extensions in the length of the predentin, the ______________, as they move away from the newly formed dentinoenamel junction. | ODONTOBLASTIC PROCESSES |
| Each odontoblastic process is contained in a mineralized cylinder, the _______________ | DNETINAL TUBULE |
| The cell bodies of _______ will remain within pulp attached by the odontoblastic processes after the apposition stage. | ODONTOBLASTS |
| The cell bodies of the ameloblasts will be involved in the mineralization process but will be lost after ________ of the tooth into the oral cavity. | ERUPTION |
| The process of the development of the _____ takes place long after the crown is completely shaped and the tooth is starting to erupt into the oral cavity. | ROOT |
| The structure responsible for root development is the ________, which is the most cervical part of the enamel organ, a bilayer rim that consists of only inner and outer enamel epithelium. | CERVICAL LOOP |
| To form the root region, the cervical loop begins to grow deeper into the surrounding ectomesenchyme of the dental sac, elongating and moving away from the newly completed crown area to enclose more of the dental papilla, forming the ________________. | HERTWIG EPITHELIAL ROOT SHEATH |
| The function of the Hertwig epithelial root sheath is to shape the root(s) by inducing _________ formation so that it is continuous with coronal dentin. | ROOT DENTIN |
| After the disintegration of the Hertwig epithelial root sheath, its cells may become the ________. | EPITHELIAL RESTS OF MALASSEZ |
| The ______ differentiated into cementum, as well as alveolar bone and periodontal ligament. | DENTINAL SAC |
| This disintegration of the root sheath allows the undifferentiated cells of the dental sac to contact the newly formed surface of root dentin, which induces these cells to become immature _______ | CEMENTOBLASTS |
| The cementoblasts move to cover the root dentin area and undergo cementogenesis, laying down __________. | CEMENTOID |
| Unlike ameloblasts and odontoblasts, which leave no cellular bodies in their secreted products, many cementoblasts become entrapped by the cementum they produce and become mature _______ in the later stages of apposition. | CEMENTOCYTES |
| As a result of the apposition of cementum over the dentin, the __________ is formed in the area where the disintegrating basement membrane between the two tissue types was located. | DENTINOENAMEL JUNCTION |
| The first stage of tooth development is the _____ stage that begins for the primary dentition between the 6TH and 7TH week of prenatal development. | INITITATION |
| During the 2ND stage of tooth development that occurs during at the beginning of the 8TH week of prenatal development for the primary dentition, there is extensive proliferation of the dental lamina into a ________, one for each of the 20 primary teeth. | BUD |
| During 3RD stage of tooth development that occurs during the 9TH and 10TH week of prenatal development for the primary dentition, formation of the tooth germ occurs with the enamel organ creating a ___shape around the dental papilla and the dental sac. | CAP |
| The ____ stage of tooth development occurs between the 11TH and 12TH week of prenatal development for the primary dentition. | BELL |
| During the 4TH stage of tooth development, the enamel organ differentiates into many layers, 1 of which is the ______ that will later become enamel-secreting cells or ameloblasts. | INNER ENAMEL EPITHELIUM |
| Within the concavity of the differentiating enamel organ, the _____ undergoes extensive differentiation during the 4TH week of prenatal development to later become dentin-secreting cells, or odontoblasts. | OUTER CELLS OF THE DENTAL PAPILLA |
| Each hard dental tissue of the mature tooth is initially secreted as a partially mineralized matrix during the stage of ____, thus serving as a framework that will later undergo maturation when each tissue is mineralized to its fullest extent. | APPOSITION |
| The 1ST cells to undergo repolarization near the basement membrane in the developing tooth germ are the ________, which then will induce the outer cells of the dental papilla to become odontoblasts. | PREAMELOBLASTS |
| The 1st cells to start their secretory activity near the basement membrane after repolarization to produce predentin are the _______, thus obtaining a thicker layer of predentin than enamel matrix at any location during the apposition stage of TD. | ODONTOBLASTS |
| cervical loop, composed only inner & outer enamel epithelium, begins to grow deeper after forming, moving away from the newly completed crown area & enclose more dental papilla to produce the __, which functions shape the roots inducing dentin formation. | HERTWIG EPITHELIAL ROOT SHEATH |
| To allow for the eruption process, the _____ first has to fuse with the oral epithelium lining in the oral cavity. | REDUCED ENAMEL EPITHELIUM |
| When the primary tooth is then lost, exfoliated, or shed, the _____ permanent tooth develops LINGUAL to it. | SUCCEDANEOUS |
| The _______, are formed from undifferentiated mesenchyme; these cells cause resorption, or removal of parts of the primary's root of dentin and cementum, as well as small parts of the enamel crown. | ODONTOCLASTS |
| Special ____ destroy any remaining collagen fibers during the shedding process of the primary dentition. | FIBROBLASTS |
| Process of shedding primary tooth is intermittent, because at the same time the osteoclasts differentiate to resorb bone and odontoblasts "diff" to resorb dental tissue, the always-ready ___ & cementoblasts work to replace the resobed parts of the root. | ODONTOBLASTS |
| The only exception to the lingual eruption placement is the ______ maxillary incisors, which move to a more facially placed position as they erupt into the oral cavity. | PERMANENT |
| It is common on a partially erupted tooth to have a _____ cyst that appears as fluctuant, blue vesicle-like lesion. | ERUPTION |
| Both succedaneous and nonsuccedaneous permanent teeth erupt in ______, or sequential, order. | CHRONOLOGICAL |
| The _____ eruption of the primary tooth has many stages as the tooth moves into place in the alveolar process of each arch; this not the passive eruption, which occurs with aging,w hen gingival tissue recedes but no actual tooth movement takes place. | ACTIVE |
| After the apposition ceases in the crown area of each primary & permanent tooth, the ______ place an acellular dental cticle on the newly formed outer enamel surface. | AMELOBLASTS |
| During tooth development, the enamel organ consists of stellate reticulum, stratum intermedium, and _______, along with the ameloblasts from the inner enamel epithelium. | OUTER ENAMEL EPITHELIUM |
Created by:
DHYG