| Term | Definition |
|---|
| 1) Ectoderm 2) Mesoderm 3) Endoderm | The human embryo has three layers: |
| Epithelial tissue of the nasal cavity and mouth (oral mucosa, gingiva, and JE) | The ectoderm gives rise to what? |
| ectomesenchyme | Connective tissue derived from ectoderm |
| basically everything in the oral cavity | The ectomesenchyme forms what? |
| the primitive mouth that becomes the nasal and oral cavities | What is the stomodeum? |
| Region of ectoderm that give rise to neural crest cells | What is Neural crest? |
| cells that float around the embryo and become specialized cells | What are neural crest cells? |
| a pouch of ectoderm that develops in the stomodeum to form the anterior portion of the pituitary gland | What is Rathke's pouch? |
| Initiation (Bud stage) | Dental lamina grows into mesenchyme during what stage? |
| dental lamina | The enamel organ develops from the ___________. |
| ectomesenchyme | Dental papilla arises from: |
| Dentin, Pulp | What arises from dental papilla? |
| dental sac | What surrounds the developing tooth? |
| PDL, Alveolar bone, Cementum | What arises from the dental sac? |
| Proliferation (Cap Stage) | The enamel organ develops in what stage? |
| the inner enamel epithelium | What becomes ameloblasts? |
| enamel | Ameloblasts produce: |
| dentin | Odontoblasts produce: |
| dental papilla | Odontoblasts are found where? |
| "the bell stage" | What stage does differentiation occur? |
| pharyngeal arches | Brachial arches are also called: |
| Neural crests cells, brachial arches | The face and neck form: |
| 6 | How many brachial arches are there? |
| Brachial arch I | Which brachial arch is associated with cranial nerve V? |
| Brachial arch I | Which brachial arch is associated with mandible and maxilla formation? |
| 1) Initiation, 2) Proliferation, 3) Differentiation, 4) Maturation | Stages of Morphogenesis: |
| 1) bud, 2) cap, 3) bell, 4) maturation | Four stages of odontogenesis: |
| primary dentition | The dental lamina is the: |
| permanent dentition | The successional dental lamina is the: |
| Tome's process | What is the structure on ameloblasts that secretes enamel? |
| cementoblasts | What forms cementum? |
| formation of root dentin | What is the signal for tooth eruption? |
| Hertwig's epitheleal root sheath | What structure helps determine root shape/outline? |
| rests of Malassez | What is remnant of Hertwig's epitheal root sheath? |
| cyst | What can occur because of rests of malassez? |
| 1 - 4 years | How long does it take for root formation to occur after eruption? |
| osteoclasts | In resorption, what removes alveolar bone? |
| cementoclasts | In resporption, what removes cementum? |
| odontoclasts | In resportion, what removes dentin and pulp? |
| odontoblasts | What forms dentin? |
| Dentinogenesis | Formation of dentin is called: |
| Amelogenesis | Formation of enamel is called: |
| Cementogenesis | Formation of cementum is called: |
| Concresence | After roots develop cementum is deposited between adjacent teeth and joints the root together: |
| mesioden (at the midline) | What is the most common supernumerary tooth? |
| Dens en dente | "Tooth within a tooth" |
| Maxillary laterals | Most common sites for dens en dente: |
| twinning; ONE ROOT, two crowns | Gemination: |
| TWO ROOTS, one crown | Fusion: |
| When a permanent tooth is affected as a result of a primary tooth have amelogenisis imperfecta | What is Turner's tooth? |
| more | Are teeth affected by amelogenisis imperfecta at more or less risk for decay? |
| abnormal enamel formation | Amelogenesis imperfecta is: |
| pitted, hypoplastic, hypocalcified | Characteristics of amelogenesis imperfecta: |
| abnormal dentin formation | What is dentinogenesis imperfecta? |
| pulp chambers | What is destroyed in amelogenesis imperfecta? |
| dentinogenesis imperfecta | What condition is characterized by "opalescent dentin"? |
| Internal resorption | Tooth resorption that appears pink and begins with the pulp: |
| Enamel rod | What is the basic structural unit of enamel? |
| Lines of Retzius | Concentric rings within enamel rods like growth rings on trees: |
| calcium hydroxyapatite | Primary component of enamel |
| Attrition | Enamel wear from tooth to tooth contact |
| Erosion | Enamel wear from chemical means |
| Abrasion | Enamel wear from friction from toothbrushing and/or toothpaste |
| Abfraction (wedge shaped) | Enamel loss due to compressive forces placed on individual teeth or several teeth |
| Dentin | What makes up the bulk of the tooth? |
| Imbrication lines of von Ebner | Incremental lines like growth rings on a tree for dentin (not enamel) |
| Primary, Secondary, and Tertiary | Three types of dentin: |
| Tertiary | What type of dentin is in response to pain/trauma? |
| False: decreases in size | True or False: Pulp chamber size increases over the life of a tooth. |
| fibrotic | With increased age pulp becomes more ___________. |
| pulp | What detects pain in the tooth? |
| Arrest lines | What is the cementum equivalent to Lines of Retzius in enamel? |
| Alveolar crest, Horizontal, Oblique, Inter-radicular, Apical | Name the PDL fiber groups: |
| Interdental septum | Bone between teeth is called: |
| Osteocytes | Bone cells are called: |
| Canaliculi | Tubular canals that connect osteocytes are called: |
| Stratified squamous epithelium | Oral mucosa is what type of tissue? |
| Lining mucosa, Masticatory mucosa, Specialized mucosa | 3 types of oral mucosa: |
| buccal and labial mucosa | What is an example of lining mucosa? |
| attached gingiva | What is an example of masticatory mucosa? |
| lingual papillae | What is an example of specialized mucosa? |
| Filiform, foliate, circumvallate, fungiform | Name four types of lingual papillae. |
| filiform | Which lingual papillae do not have taste buds? |
| filiform | Which lingual papillae is most common? |
| Serous and Mucous | Two types of salivary secretory cells: |
| Mucocele | Salivary retention in a minor salivary gland |
| Ranula | Salivary retention in the sublingual gland |
| mantle | Dentin that is the first layer immediately adjacent to the DEJ is called: |
| Hertwig's epithelial root sheath | Where is the origin of "rests of Malassez"? |
| True | True or false: Nervous tissue is derived from ectoderm. |
| bone, cementum, and enamel | Hydroxyapatite is a constituent of: |
| PDL | What transmits sensation of contact when teeth are occluding? |
| parotid | Which salivary gland secretes serous saliva only? |
| apical third of the root | What part of the root has the thickest layer of cementum? |
| Sharpey's fibers | What attaches the PDL to cementum? |
| outlining the dentinoenamel junction | Reduced enamel epithelium plays an important role in: |
| groups of epithelial cells in the periodontal ligament | Rests of Malassez are composed of: |
| from the PDL | Where does cementum gain its nourishment? |
| odontoblast | Which cell is injured when a tooth overheats during an amalgam preparation? |
| foramen caecum | What is the embryonic origin of the thyroid gland? |
| circumvallate | Which papillae is most closely associated with taste buds? |
| Tertiary/reparative dentin | What is a protective pulpal response to external irritants? |
| the inner enamel epithelium | Ameloblasts derive from: |
| Tooth enamel comes from what lining? | Ectoderm lining the stomodeum |
| Put these in order: enamel, enamel organ, ameloblasts, IEE, dental lamina, ectoderm | Ectoderm, dental lamina, enamel organ, IEE, ameloblast, enamel |
| The upper lip is developed by the: | the median nasal process and the right and left maxillary process |
| The hard palate is developed by the: | globular process with the right and left palatal shelves |
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