| Term | Definition |
|---|
| 5-6 week | primary palate: fused medial nasal processes from intermaxillary segment (time) |
| 6-12 week | secondary palate: fused palatal shelves from maxillary process (time) |
| 12 th week | final palate: fusion of all 3 processes (time) |
| 1st brachial arch, frontal process | palate develops from _____, and ______ |
| 8-12 | soft tissues of the palate fuse between ___ week |
| intermaxillary segment | forms from internal fusion of 2 mesial nasal processes in the 5th week |
| intermaxillary segment | ____ gives rise to the primary palate (premaxillary process) |
| globular process | develops as medial nasal processes frow downward also forms philtrum |
| r/l maxillary process, globular process | what 3 sorces does the palate develop from |
| 6th week | ____ 2 palatal shelves develop from eaxh side of maxilla (time) |
| 7th week | _____ developing tongue drops down, vertical shelves flip up and fuse with primary palate (time) |
| secondary palate | forms the roof of the oral cavity and floor of nasal cavity |
| secondary palate | creates teh median palatine raphe |
| median palatine raphe | line of fusion of palatal shelves |
| 8-12 weeks | time when complete closure of lateral palatine processes and premaxilla happens |
| anterior hard palate | ossification begins in the _______ |
| nasopalatine canal | ____ is created at juncion of primary and secondary palate becomes the incisive foramen |
| palatal muscles | ____ are formed from the 1st and 2nd branchial arches during the 8-12 weeks |
| 1 | bony fusion completed by ____ year postnatal |
| cyst | fluid filled sack created when the 2 shelves fuse and epithelial tissue gets stuck between |
| median paltine cyst | along lnes of fusion of 2 palatal sheves at medline developmental defect |
| globulomaxillary cyst | along lines of fusion of primary palate and palatal shelves between mx lateral incisor/canine developmental defect\ |
| 7-8 week | 2 maxillary process fuse with primary palate during ______ week |
| 7-11 week | If cleft palate develops it will be between teh ____&_____ week |
| nasal cavity | ______forms at same time as palate |
| nasal cavity/ septum | _______/______grows from fused medial nasal processes |
| 9/12 week | vertical nasal septum fuses with horizontal plate begins____ ends_____ |
| 9/12 week | mucosal linings form during the _____ thru_____ week |
| 4-8th week | tongue development occures during the ____ thru_____ week |
| anterior | 1st branchial arch forms the _______portion of the tongue(movable) |
| posterior | 2nd and 3rd branchial arches form the ________ portion of the tongue(nonmovable) |
| 2 lateral lingual swellings, tuberculum impar | the tissues of the tongue develop from _____ and _____ |
| median lingual sulcus | line of fusion of 2 lateral swellings of tongue |
| tuberculum impar | what is not visible in the fully formed tongue |
| copula | formed from fusion of mesenchyme from III and IV branchial arches (tongue) |
| sulcus terminalis | v shaped groove that sepearated base/ body of tongue |
| 8th week | the lingual papilla start to appear at the end of the ____ week |
| circumvallate, foliate | which papillae develop first (2) |
| filiform, 10th-11th week | which papillae devolp last when? |
| 11-13 week | taste buds dont develope until ____-____ weeks |
| ankyloglossia | tongue tied, short lingual frenum |
| 1st branchial arch/ frontal process | dentition develops from _____/ ________. |
| odontogenesis | formation of the dentition is refered to as |
| 6th | dentition begins to form at the ____ week of gestation |
| anterior | dentition formation begins at the ______ part of mandible |
| 4th month- after birth | calcification of dention begins _____ till ______ |
| primary lamina dura | dentition develops from thickened epithelum called_____ |
| enamel organ, dental papilla, dental sac | three layers of the tooth germ |
| outer enamel epithelium | determines the shape of crown |
| herwigs epithelal sheath | determines the shape of the roots |
| inintiation, bud, cap, bell, apposition, maturation | stages of tooth development |
| perm 2nd &3rd molars | _____molars have the longes developmental period of any set of organs |
| bud, cap, bell | each tooth develops through successive ____,___,____stages |
| bell stage | differentiation takes place in the ____ stage (teeth) |
| roots | as crowns form and mineralize the _____ beins to form |
| supporting tissues (cementum, pdl, alveolar bone) | after roots calcify _____ begins to develop |
| 6-7 | Inintiation stage of tooth development begins at ____-___week |
| induction | initiation involves______ =an interaction between mesencyme and ectoderm |
| ectoderm | ____lining stomodeum gives rise to oral epithelium |
| basement membrane | ____separates cell layers |
| dental lamina | oral epithelium grows deeper into mesenchyme inducing the formation of _______ |
| anodontia | absence of a tooth |
| initiation | anodontia is a result of lack of ______ |
| perm, max lateral incisors, third molars, mand 2nd premolars | most commonly missing teeth (3) |
| mesiodens, distomolar, perimolar | most common supernumerary teeth |
| mesiodens | supernumerary teeth between maxillary central incisors |
| distomolar | supernumerary teeth distal to max 3rd molar |
| perimolar | supernumerary teeth in area of premolars |
| 8th week | bud stage begins____ |
| proliferation | bud stage involves______ of dental lamina into buds |
| bud, mesenchyme | basment membrane is between____ & ______ in the bud stage |
| ectoderm, mesenchyme | buds develop from____ and ______ |
| abnormal proliferation | develop distrurbance in the bud stage (size) |
| macrodontia | develop distrubanc in bud stage to big teeth |
| microdontia | abnormally small teeth (bud stage) |
| peg lateral | affects permanent maxillary lateral incisors (bud stage) |
| peg molar | affects third molars (bud stage) |
| 9-10th | cap stage is during the ___-___ weeks |
| proliferation, differentiation, morphogenesis | cap stage involves ____,____,_____ processes |
| unequal | _____growth happens ifn the proliferationof the cap stage |
| cytodifferentiation, histo, morpho | types of differentiation that takes place in the cap stage |
| morphogenisis | ______ tooth germ formation |
| enamel organ | will produce enamel |
| dental papilla | will produce dentin |
| dental sac | will produce cementum, pdl, and alveolar bone |
| 10th week | initiation of perm anterior teeth begins (cap stage) |
| successional dental lalmina | the extentions of dental enamel that form the permenant teeth |
| tubercles | extra cusps small extension of enamel, most common on perm molars |
| gemination, fusion, dens in dente | developmental disturbance during cap stage |
| gemination | a single tooth germ attempts to divide into 2 teeth, normal number of teeth in arch |
| fusion | union of 2 adjacent teeth, 1 less tooth in arch |
| oral epithelium, mesenchymal | tooth development is dependent of interaction of _______ and underlying ______ cells |
| 11-12 | bell stage occurs in the __--___ week |
| proliferation, differrentiation, morphogenisis | processes that take place in the bell stage (3) |
| outer enamel epithelium, inner enamel epithelium, stellate reticulum, stratum intermedium | what are the 4 cell types created when the enamel organ differentiates into bell |
| outer, central | the 2 cells types that the dental papilla differentiates into |
| dental sac | forms cementum, pdl, alveolar bone |
| OEE | act as protecive barrier for enamel organ |
| stellate reticulum | act as support for production of enamel matrix |
| stratum intermedium | compressed layer of flat or cuboidal cells |
| Inner enamel epithelum | differentiate into ameloblastss that form enamel matrix |
| outer cells of dental papilla | will form odotoblast that form dentin matrix |
| central cells of dental papilla | will form the pulp tissue |
| IEE | forms inner most layer in bell shped enamel organ |
| odontoblasts | outer cells of dental papilla induced by preameloblast to form_____ |
| dentinogenesis | laying of dentin |
| Tomes process | tapered end of ameloblast that faces the diintergrating basment membrane |
| preamelobasts-- amyloblasts | disintegrating basment membrane stimulates_____to become____ |
| apposition | laying down of the matrix layers |
| contact of predentin and enamel matrix | what stimulates mineraliztion |
| cej | mineralization starts at the_____moves away |
| odontoblastic processes | extensions in predentin from the odontoblasts |
| dentainal tubule | mineralized cylinder where process are housed |
| enamel dysplasia | defective enamel |
| enamel hypoplasia | type of displasia seen as reduction in quality of enamel |
| amylogenisis imperfecta | hereditary disorder, thin enamel or absent |
| dentin dysplasia | faulty dentin due to metabolic disorderd |
| dentinogenesis imperfecta | hereditary disorder, dentin displasia |
| cervical loop | root development begins at_______. |
| cervical loop | structure responsible for root development located at most cervical portion of enamel organ |
| hertwigs epithelial root sheath | it functions to shape the root and induce dentin formation in the root area so that it is continueous with the coronal dentin |
| IEE, OEE | the cervical loop is made up of only ____ and _____ |
| hertwigs epithelial root sheath | encloses the dental papilla tissue |
| outer cells of dental papilla | root dentin foms when _____ in root area differenciate into odontoblasts |
| dentinogenisis | basement membrane between IEE and herwigs sheath deteriates _______begins |
| Hertwigs epithelail root sheath | when root formation complete _____ disappears |
| epithelial rests of malassez | if HRS cells remain after root development cysts can form called______ |
| enamel pearl or enamelons | developmental disturbance during root formation |
| enamel pearl or enamelons | abnormal enamel on root surface due to misplaced ameloblasts, often at CEJ |
| cementogenisis | ___ occures when HRS disintegrates allowing cells of dental sac to contact newly formed root dentin |
| cementoid | cementum matrix aka |
| cementocytes | cementoblasts that become trapped in matrix and mature are called____ |
| central cells of dental papilla | at the same time when the cementum is calcifying the ______ are are forming the pulp |
| concrescence | union of root structure of 2 or more teeth by cementum (developmental disturb. with cement. form) |
| maxillary molars | concrescence is most common in _______ (teeth) |
| mesenchyme of dental sac | the periodontal ligament is formed by ______ |
| collagen fibers | periodontal ligament is made out of ______ fibers |
| hertwigs root sheath | differential growth of _______ causes root trunks of multi rooted teeth to divide into 2 or 3 trunks |
| dilaceration | root formation disturbance (curved roots) due to distortion of herwigs root sheath or pressure or injury |
| accessory roots | root developmental disturbance (to many roots) caused by trauma or pressure |
| mx lateral incisores, canines, molars | dilaceration is most common in what teeth (3) |
| 3rd molars | accessory roots are most common in what teeth (1) |
| chronological | eruption occurs in ______ order |
| active eruption | type of eruption where tooth pushes out |
| passive eruption | type of eruption where the gingiva receeds |
| nasmyths membrane | type of tissue left on the tooth surface of newly erupted teeth. |
| reduced enamel epithelium | Nasmyth's membrane is made out of what _____ _____ ______ |
| REE fuses with oral epithelium | what starts off the eruption process |
| enzymes | _____ from the REE disintegrates the tissue creating the epithelial tunnel |
| osteoclasts, odontoclasts | primary tooth loss involves differentiation of _____ (reabsorb bone) & _______(reabsorb dentin and cementum) |
| intermittent process | primary tooth loss is an _____ process. |
| dentigerous cyst (folicular cyst) | developmental disturbance during eruption, cyst that forms from residual REE |
| unerupted, impacted teeth | dentigerous cyst a type or odontogenic cyst forms around the crowns of ______ or_____ |
| eruption cyst | type of dentigerous cyst that is attached to an erupting tooth |
| blue vesicle lesion | eruption cysts apear as a ____ _____ lesion prior to full eruption of tooth |
| copula | ____ forms the base of the tongue |
Combine with other sets
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