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Module 3 Vocabulary
Oral Histology & Embryology
| Term | Definition |
|---|---|
| Alveolar crest | Highest point of the alveolar ridge. |
| ameloblasts | Cells that form enamel |
| alveolar socket | Cavity within the alveolar process that surrounds the root of a tooth. |
| apex | Tapered end of each root tip. |
| apical foramen | Natural opening in the root. |
| cementoblasts | Cells that form cementum. |
| cementoclasts | Cells that resorb cementum. |
| cementum | Specialized, calcified connective tissue that covers the anatomic root of a tooth. |
| clinical crown | That portion of the tooth that is visible in the oral cavity. |
| conception | Union of the male sperm and the female ovum. |
| coronal pulp | Part that lies within the crown portion of the tooth. |
| cortical plate | Dense outer covering of spongy bone that makes up the central part of the alveolar process. |
| dental lamina | Thickened band of oral epithelium that follows the curve of each developing arch. |
| dental papilla | gingivae between the teeth |
| dental sac | Connective tissue that envelops the developing tooth. |
| dentin | Hard portion of the root that surrounds the pulp and is covered by enamel on the crown and by cementum on the root. |
| dentinal fiber | Fibers found in dentinal tubules |
| dentinal tubules | Microscopic canals found in dentin. |
| deposition | The process by which the body adds new bone. |
| embryo | An organism in the earliest stages of development. |
| embryology | The study of prenatal development. |
| embryonic | Stage of human development that occurs from the beginning of the second week to the end of the eighth week. |
| enamel lamellae | Thin, leaflike structures that extend from the enamel surface toward the detinoenamel junction and consist of organic material with little mineral content. |
| enamel organ | Part of a developing tooth destined to produce enamel. |
| enamel spindles | The ends of odontoblasts (dentin-forming cells) that extend across the detinoenamel junction a short distance into the enamel. |
| enamel tufts | The hypocalcified or uncalcified ends of groups of enamel prisms that start at the detinoenamel junction and may extend to the inner third of the enamel. |
| exfoliation | The normal process of shedding the primary teeth. |
| fetal period | Stage of human development that starts at the beginning of the ninth week and ends at birth. |
| fibroblast | Type of cell in connective tissue responsible for the formation of the intercellular substance of pulp. |
| gestation | Stage of human development that starts at fertilization and ends at birth. |
| histology | The study of the structure and function of body tissues on a microscopic level. |
| hunter-schreger bands | Alternating light and dark bands in the enamel that are produced when enamel prisms intertwine or change direction. |
| dydroxyapatite | Mineral compound that is the principal inorganic component of bone and teeth. |
| hyoid arch | The second branchial arch, which forms the styloid process, stapes of the ear, stylohyoid ligament, and part of the hyoid bone. |
| lamina dura | Thin, compact bone that lines the alveolar socket; also known as the cribriform plate. |
| lining mucosa | 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. |
| mandibular arch | the lower jaw |
| masticatory mucosa | Oral mucosa that covers the hard palate, dorsum of the tongue, and gingiva. |
| meiosis | Reproductive cell production that ensures the correct number of chromosomes. |
| modeling | Bone changes that involve deposition and resorption of bone and occur along articulations as they increase in size and shape to keep up with the growth of surrounding tissues; also known as displacement. |
| odontoblasts | cells that form dentin |
| odontogenesis | formation of new teeth |
| osteoblasts | cells that form bone |
| osteoclasts | cells that resorb bone |
| periodontium | structures that surround, support, and are attached to the teeth |
| preimplantation period | Stage of development that occurs during the first week after fertilization. |
| prenatal development | Stage of human development that starts at pregnancy and ends at birth. |
| primary cementum | Cementum that covers the root of the tooth and is formed outward from the cementodentinal junction for the full length of the root. |
| primary dentin | Dentin that forms before eruption and that makes up the bulk of the tooth. |
| primary palate | The shelf that separates the oral and nasal cavities. |
| prism | calcified column or rod |
| radicular pulp | other portion known as root pulp |
| pulp chamber | space occupied by pulp |
| remodeling | Growth and change in shape of existing bone that involves deposition and resorption of bone. |
| resorption | The body’s processes of eliminating existing bone or hard tissue structure. |
| secondary cementum | Cementum that is formed on the apical half of the root; also known as cellular cementum. |
| secondary dentin | Dentin that forms after eruption and continues at a very slow rate throughout the life of the tooth. |
| secondary palate | The final palate formed during embryonic development. |
| specialized mucosa | Mucous membrane on the tongue in the form of lingual papillae, which are structures associated with sensations of taste. |
| stomodeum | primitive mouth |
| stratified squamous epithelium | Layers of flat, formed epithelium. |
| striae of retzius | Incremental rings that represent variations in deposition of the enamel matrix during tooth formation. |
| succedaneous teeth | Permanent teeth that replace primary teeth. |
| tertiary dentin | Dentin that forms in response to irritation and appears as a localized deposit on the wall of the pulp chamber; also known as reparative dentin. |
| tooth buds | Enlargements produced by the formation of dental lamina. |
| zygote | fertilized egg |
Created by:
jessicadurrett
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