Tooth Eruption Flashcards
eruption of deciduous teeth happens _____ to ______
medial, lateral
eruption of permanent teeth happens ______ to _______ with the exception of the _______
medial, lateral, 1st premolar
early tooth eruption is ________ however early loss of a primary tooth may lead to early eruption of permanent tooth
not common
late eruption of teeth is more common and can be caused by _______ deficiencies, _______ and ________ deficiencies
nutrition, genetics, metabolic
tooth _______ is a misalignment if tooth orientation
impaction
succedaneous and nonsuccedaneous developement of permant teeth form from the ________ that forms off the initial bud
successional lamina
considerable change in tooth positioning is needed for a tooth to become functional and relocate through ______, _______ tissue and ______ to reach the occlusal plane
bone, connective, epithelium
tooth germs of permanent teeth develop on the _______ side of the primary teeth
lingual
the jaw continues to grow until the age of ______
20
maxillary molars face ________ at first until there is enough room for them to move
distally
the three stages of tooth eruption are the _________ stage, the _______ stage, and the _______ stage
pre-eruptive, eruptive, post-eruptive
mandibular molars face in a ______ direction until there is enough room
mesial
the pre-eruptive stage is the changing in the ______ of the tooth prior to eruption
location
the eruptive stage is reflective of the movement of the tooth as it changes position in the jaw to reach the ________
occlusal plane
the post-eruptive stage is the changing in the position of functional teeth as the _______ and in subsequent use of the dentition
jaw grows
in the pre-eruptive stage the teeth move in two ways which are _______ and ________
bodily movement, eccentric growth
bodily movement is the shift in the location of the _________ within the developing jaw
entire tooth germ
eccentric growth is the relative growth of _______ of a tooth in relation to the rest of the tooth resulting in a different ______ of the tooth
one part, center of gravity
during eccentric movement the _______ and the center of the tooth will change
root elongates
premolars erupt under the _______, and much of the root of the primary molar is _______
primary molars, resorbed
the gubernacular cord is an original structure of the _______ which undergoes apoptosis and their remnants were organized in the form of ________ and strands that lined up, leaving the reduced epithelium of the enamel organ towards the oral mucosa
dental lamina, epithelial islets
the gubernacular cord is the ________ for permanent teeth and is composed of a fibrous conjunctive tissue containing _______ nerves, _______ and ______ vessels
path of eruption, peripheral, blood, lymphatic
gubernacular cords travel through the gubernacular canals which is widened by the _______ activity
osteoclast
gubernacular cords connect the ________ of the succedaneous tooth to the _______
dental follicle, oral mucosa
teeth without roots can erupt so therefore root formation is _______ for tooth eruption
not required
during root eruption the periodontal ligament forms _______ root formation starts, and is ________ as eruption occurs
after, remodeled
_______ is an extremely rare inherited disorder whereby the bones harden and become dense due to low osteoclast activity
osteopetrosis
in osteopetrosis the periodontal ligament development is normal but teeth do not erupt and in rootless teeth with little periodontal ligaments teeth DO erupt which means periodontal ligaments are _________ with tooth eruption
not associated
experimental removal of _______ prevents eruption although the tooth forms
dental follicle cells
the dental follicle modulates bone remodeling which therefore suggests that the follicle is ________ for tooth eruption
required
in osteopetrosis there is a reduced amount of osteoclast activity, causing reduced bone resorption and therefore the teeth _________
do not erupt
colony-stimulating factor 1 (CSF-1) is a growth factor that activates _______ activity
osteoclastic
reactivation of osteoclasts in osteopetroic conditions leads to restored ________
tooth eruption
osteoclasts around the developing teeth are differentiated from extravasated ________
monocytes
vascularization of the tooth surrounding area starts at the late ________ stage of development
apposition
vascularization starts to become prominent with the formation of the ________ layer overlaying the developing crown
papillary
vascularization becomes prominent as the ________ and ________ develop
roots, periodontal ligaments
vascularization allows for the extravasation of ________ in the neighborhood of the developing tooth
monocytes
monocyte movement into the dental follicle is promoted by the ______ that is secreted by the follicle cells
monocyte chemotropic protein 1
follicular cells also express ______ that promotes differentiation of _______ into _______
CSF-1, monocytes, osteoclasts
________ is the natural process of losing deciduous teeth
exfoliation
during canine and incisor exfoliation the permanent teeth develop on the _______ side and there is little loss of pulp, bone and root of the ______ tooth
lingual, deciduous
during the exfoliation of the incisors and canines the ________ is lost rapidly due to cells undergoing ________
periodontal ligament, apoptosis
during exfoliation of deciduous molars the periodontal ligament is lost as the _______
roots are reabsorbed
during the post-eruptive stage the periodontal ligaments attain mature patterns of ________ and they become more defined
fiber groups
in the post eruptive stage the _______ groups develop and the final growth pattern of vascularization and innervation of the periodontal ligaments
gingival-fiber
mesial drift is the anterior or mesial readjustment of teeth with the jaw as a whole due to _________
alveolar bone remodeling
bone resorption occurs _________ in each socket and addition ________
anteriorly, posteriorly
bone remodeling is due to _______ and _______ of jaws relative to each other as teeth contact each other
mastication, angle
mesial drift from the loss of a molar can alter the ________ which alters how the mandible and maxilla interact during mastication and will end up remodeling the structure of the _________
bite plane, tempormandibular joint
