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Modern Dental Assisting Ch.8
Oral Embryology and Histology
66
Other
Not Applicable
09/24/2016

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Term
Alveolar Crest
Definition
Highest Point of the alveolar ridge
Term
Alveolar Socket
Definition
Cavity within the alveolar process that surrounds the root of a tooth
Term
Ameloblasts
Definition
Cells that form enamel
Term
Anatomical Crown
Definition
Portion of the tooth that is covered with enamel
Term
Apex
Definition
Tapered end of each root tip
Term
Apical foramen
Definition
Natural opening in the root
Term
Cementoblasts
Definition
Cells that form cementum
Term
Cementoclasts
Definition
Cells that reabsorb cementum
Term
Cementum
Definition
Specialized, calcified connective tissue that covers the anatomic root of a tooth
Term
Clinical Crown
Definition
That portion of the tooth that is visible in the oral cavity
Term
Conception
Definition
Union of the male sperm and the female ovum
Term
Coronal Pulp
Definition
Part that lies within the crown portion of the tooth
Term
Cortical Plate
Definition
Dense outer covering of spongy bone that makes up the central part of the alveolar process
Term
Dental lamina
Definition
Thickened band of oral epithelium that follows the curve if each developing arch
Term
Dental Papilla
Definition
Gingivae between teeth
Term
Dental Sac
Definition
Connective tissue that envelops the developing tooth
Term
Dentin
Definition
Hard portion of the root that surrounds the pulp and is covered by enamel on the crown and by cementum on the root
Term
Dentinal Fiber
Definition
Fibers found in dentinal tubules
Term
Depsotion
Definition
The process by which the body adds new bone
Term
Embryo
Definition
An organism in the earliest stage of development
Term
Embryology
Definition
The study of prenatal development
Term
Embryonic Stage
Definition
Stage of human development that occurs from the beginning of the second week to the eighth week
Term
Enamel lamallae
Definition
Thin leaflike structures that extend from the enamel surface toward the detinoenamel junction and consist of organic material with little mineral content
Term
Enamel organ
Definition
Part of a developing tooth destined to produce enamel
Term
Enamel spindles
Definition
The ends of odontoblasts (dentin forming cells) that extend across the dentinoenamel junction and may extend to the inner third of the enamel
Term
Enamel Tufts
Definition
The hypocalcified or uncalcified ends of groups of enamel prisms that start at the dentinoenamel junction and may extend ti the inner third of the enamel
Term
Exfoliation
Definition
The normal process of shedding the primary teeth
Term
Fetal period
Definition
Stage of human development that starts at the beginning of the ninth weeks and ends at birth
Term
Fibroblast
Definition
Type of cell in connective tissue responsible for the formation of the intercellular substance of pulp
Term
Gestation
Definition
Stage of human development that starts at fertilization and ends at birth
Term
Histology
Definition
The study of the structure and function of body tissues on a microscopic level
Term
Hunter-Schreger bands
Definition
Alternating light and dark bands in the enamel that are produced when enamel prisms intertwine or change direction
Term
Hydroxyapatite
Definition
Mineral compound that is the principal inorganic component of bone and teeth
Term
Hyoid Arch
Definition
The second branchial arch, which forms the styloid , stapes of the ear, stylohyoid ligament, and part of the hyoid bone
Term
Lamina Dura
Definition
Thin, compact bone that lines the alveolar socket: also know as the cribriform plate
Term
Lining Mucosa
Definition
Mucous membrane that covers the inside of the cheeks, vestibule, lips, soft palate, and underside of the tongue and acts as a cushion for underlying structures
Term
Mandibular
Definition
The lower jaw
Term
Masticatory mucosa
Definition
Oral mucosa that covers the hard palate, dorsum of the tongue, and gingiva
Term
Meiosis
Definition
Reproductive cell production that ensures the correct number of chromosomes
Term
Modeling
Definition
Bone changes that involve desposition and resorption of bone and occur along articulations as they increase in size and share to keep up with the growth of surrounding tissues: also known as displacement
Term
Odontoblasts
Definition
Cells that form dentin
Term
Odontogenisis
Definition
Formation of new teeth
Term
Osteoblasts
Definition
Cells that form bone
Term
Osteoblasts
Definition
cells that resorb bone
Term
Peridontium
Definition
Structures that surround, support and are attached to the teeth
Term
Perimplantaton period
Definition
Stage of development that occurs during the week after fertilization
Term
Prenatal developmet
Definition
Stage of human development that starts at pregnancy and ends at birth
Term
Primary cementum
Definition
Cementum that covers the root of the tooth and is formed outward from the cementodentinal junction for the full length of the root
Term
Primary dentin
Definition
Dentin that forms before before eruption and that makes up the bulk of the tooth
Term
Primary Palate
Definition
The shelf that separates the oral and nasal cavities
Term
Prism
Definition
A calcified column or rod
Term
Pulp chamber
Definition
The space occupied by pulp
Term
Radicular pulp
Definition
The other portion of the pulp know as root pulp
Term
Remodeling
Definition
Growth and change in shape of existing bone that involves desposition and resorption of bone
Term
Resorptin
Definition
The body's processes of eliminating existing bone or hard tissue material
Term
Secondary cementum
Definition
Cementum that is formed on the apical half of the root also known as the cellular cementum
Term
Secondary dentin
Definition
Dentin that forms after eruption and continues at a very slow rate throughout the life of the tooth
Term
Secondary palate
Definition
The final palate formed during embryonic development
Term
Specialized mucosa
Definition
Mucous membrane on the tongue int the form of lingual papillae, which are structures associated with sensations and taste
Term
Stomodeum
Definition
The primitive mouth
Term
Stratified squamous epithelium
Definition
Layers of flat, formed epithelium
Term
Striae of Retzius
Definition
Incremental rings that represent variations in deposition of the enamel matrix during tooth formation
Term
Succedaneous teeth
Definition
Permanent teeth that replace primary teeth
Term
Tertiary teeth
Definition
Dentin that forms in response to irritation and appears as a localized deposit on the wall of the pulp chamber: also know as reparative dentin
Term
Tooth buds
Definition
Enlargements produced by the formation of dental lamina
Term
Zygote
Definition
Fertilized egg
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