embryology
study of prenatal development
histology
study of the structure and function of tissues on a microscopic level.
prenatal development
begins at the start of pregnancy and continues until birth
embryonic period
extends from the beginning of the second week to the end of the 8th week
conception
union of the male sperm and the ovum of the female
succedanneous
teeth are permanent teeth with primary predecessors; examples are the anterior teeth and premolars
periodontium
tissues that support the teeth in the aveolar bone
ameloblasts
enamel-forming cells
odontoblasts
dentin-forming cells
cementoblasts
cementum-forming cells
cementoclasts
cells that absorb cementum
osteoclasts
cells that resorb bone
exfoliation
normal process of shedding primary teeth
straited squamous epithelium
oral mucosa is made up this
mastictory mucosa
oral mucosa that covers the hard palate, dorsum of the tongue, and gingiva
name the first period of prenatal development
Preimplantation period
which period of prenatal development is the most critical?
embryonic period
the embryonic layer that differentiates into cartilage, bones, and muscles is
mesoderm
which branchial arch forms the bones, muscles, and nerves of the face and lower lip?
first
which branchial arch forms the side and front of the neck?
second
the hard and soft palates are formed by the union of the primary and secondary
palates
when does the development of the human face occur?
fifth to eight weeks
at birth, how many teeth are in some stage of development?
44
what factors can have a prenatal influence on dental development?
genetics and environment
name the process for the laying down or adding of bone
deposition
name the process of bone loss or removal
resorption
growth, calcification, and ______ are the 3 primary periods in tooth formation
eruption
the final stage in the growth period is the
bell
what is formed in the occlusal surface when multiple cusps join together
fissure and pits
what is the name of the process by which teeth move into a functional position in the oral cavity?
eruption
the portion of a tooth that is visible in the mouth is the
clinical crown
the cementoenamel l junction is located
between the cementum and the enamel
the hardest substance in the human body is the
enamel
what is the name of the largest mineral component in enamel?
calcium
pain is transmitted through dentin by way of
dentinal tubules
the type of dentin that is also known as reparative dentin is
tertiary dentin
the pull is made of
blood vessels and nerves
types of cells that form the intercellular substance of the pulp is
fibroblasts
the primary function of the periodontal ligament is
support the tooth, to maintain the tooth, to retain the tooth
which types of oral mucosa forms the inside of the cheeks, lips, and soft palate?
Linning mucosa
labeling the dental pulp:
Pulp Horns, Cornal Pulp, Accessory Cannal,Radicular Pulp, Apical Formen
labeling the periodontium
cementum, alveolar bone, periodontal ligament
which trimester is the most critical for the development of the baby?
first
by which week of pregnancy are all the primary teeth developed?
17th
what does the baby look like 1 month after conception?
the stomedeum or primitive mouth and primitive pharynx merge and the stomodeum develops into part of the mouth
what is the rule of thumb in deterring a delivery date?
38 weeks after conception
3 periods of prenatal development?
preimplanation, embryonic, fetal period
which period of prenatal development is the most critical
embryonic
3 primary embryonic layers?
ectoderm - outer layer
mesoderm - middle layer
endoderm - inner layer
which branchial arch form the bones, muscles, nerves of the face and lower lip?
first branchial arch
which branchial arch forms the side and the front of the neck?
second branchial arch
3 stages of palate formation?
primary, secondary, fusion of the palate
what does development of the human face occur?
between the 5th and 8th week
how old is the embryo when the first signs of tooth development are found?
five to six weeks old
2 major categories of factors that can adversely influence dental development?
genetic and environmental
what is the process of adding bone?
deposition
what is the process of bone loss or removal?
resorption
3 primary periods in tooth formation?
growth, calcification, eruption
3 stages of growth period?
bud, cap, bell
when a tooth has several cusps, what structures are formed when the cusps when the cusps join together?
pits and fissures
anatomical crown is?
covered in enamel
clinical crown is
visible in mouth
where is the CEJ?
neck or cervex of the tooth where the enamel of the crown and cementum meet
hardset substance in the human body
enamel
most abundent mineral component of enamel?
hydroxyapatite, consists of primarily of calcium
how does dentin transmit sensations of pain?
through dentinal fibers
what are 3 types of dentin?
primary, secondary, teritary
what are the 2 types of cementum?
primary, secondary
what types of tissue makes up the pulp?
blood vessels and nerves
what cells form the intercellular substance of the pulp?
fibroblasts
what forms a bone?
osteoBLASTS
what resorbs the bone?
osteCLASTS
What is the primary function of the periodontal ligaments?
support, maintain, and retain the tooth in the jaw
to what structure are the periodontal ligaments attached?
cementum in the alveolar bone, holding the tooth in place
3 types of oral mucosa are?
lining, masticatory, specialized
lining forms where?
inside the cheek
masticatory covers what?
hard palate and dorsum of the tongue
specialized forms where
papillae of the tongue
odontogenesis is
process of tooth formation
what makes up the anatomic crown of the mouth?
enamel
portion of the pulp is?
radicular pulp
period of prenatal development that we see human face begin to form is?
4 months
permanent tooth development is in what week?
17th week
coronal pulp lies where?
within the crown
the root is
embedded in the alveolar process
stomodeum is?
the primitive mouth
ameloblasts is
enamel forming cells
how many periods in the process of tooth development?
3; growth, calcification, eruption
two prenatal influences on dental development are?
genetic and environmental
parts of the tooth are?
enamel, dentin, pulp, gum, bone, root canal