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Dental Anatomy Buck
dental anatomy
| Question | Answer |
|---|---|
| all teeth toward lingual except | max 1. molar and some 3 cusp mandibular 2nd pre molars |
| which embrasures are bigger F or L | lingual (taper toward lingual) |
| all contact points are more occlusal on mescal than distal except | mandibular 1st premolar and primary max canine, mandibular incisors same |
| height of contour is where facially on all teeth | gingival 1/3 |
| heigh of contour lingually of anterior teeth | gingical 1/3 |
| height of contour lingually of posterior teeth | middle 1/3 |
| all mandibular posterior teeth crowns lead where on their roots | lingually and distally |
| all max posterior crowns are ________ over their roots | centered |
| which primary teeth have perikymata | none |
| how many adult teeth are non-succedaneous | 12 |
| a single root with two separate canals that run from the pulp chamber the root apex is what type? | III |
| what tooth is distal to the permanent maxillary 1st molar in a 9 year old | none |
| which tooth has the greatest cervical line curvature | maxillary central incisor on the mesial |
| which anterior tooth has the most prominent marginal ridges? | maxillary lateral incisor |
| which tooth is the third most common congenitally missing tooth | mandibular 2nd pm |
| the enamel rods in the gingival third of of the primary teeth point in what direction? | occlusally/incisally |
| which teeth erupt in the primary dentition after the incisors | primary mandibular first molar (mandibular before maxillary) |
| what tooth is distal to a primary mandibular 2nd molar in a 8 year old | permanent mandibular 1st molar |
| which premolar has the buccal cusp tip off set to the distal? | maxillary 1st |
| which primary tooth has a distinctly prominent facial cervical ridge? | mandibular 1st molar |
| what is the shape of the maxillary first premolar from the occlusal view? | hexagon |
| which root of which tooth has the largest facio-lingual width? | mesial root of the mandibular 1st molar |
| which tooth in a cervical cross section is kidney shaped | maxillary 1st premolar |
| which succedaneous teeth replaces the primary 1st molars | 1st premolars |
| which molar and which surface of that molar can pose special problems in matrix placement? | maxillary first molar..distal concavity |
| what is the name of the groove that separates the mesial marginal ridge from the lingual cusp of the mandibular 1st premolar? | mesio-lingual groove |
| which premolar has the widest mesial and distal marginal ridges? | maxillary 2nd premolar due to the short central groove |
| order of eruption of primary dentition | incisors, first molars, canines, second molars |
| which incisor has a distolingual twist when view from the incisal? | mandibular lateral |
| which tooth has a crown whose mesial side is almost flat and nearly in line with the mesial side of the root | mandibular canine |
| when has the maxillary central incisor completed its root development? | 11 years |
| crown form of canines viewed from labial | pentagonal |
| which anterior tooth demonstrates the greatest deviation in crown morphology? | maxillary lateral - peg |
| which embrasures form from contact points? | Facial lingual, occlusal cervical |
| transverse ridge from? | union of facial and lingual triangular ridges |
| contact relationship between maxillary central and lateral? | lingual embrasure is larger than facial (contact centered faciolingually) |
| maxillary tooth with lowest crown to root ratio | maxillary central |
| height of contour on a maxillary canine on facial and lingual | are approximately the same on the gingival third |
| The primary tooth that has the most distinctly prominent facial cervical ridge is | Mandibular 1st molar |
| The lingual cusp of the maxillary premolars is off set to | the mesial the first more than the second. |
| The primary second molar generally exhibits | cusp of Carabelli |
| Mamelons that remain beyond the age of 10 generally indicate | an open bite |
| generally occlude with only one opposing tooth. | Mandibular central incisors and Maxillary third molars |
| The developmental groove between the df cusp and the dl cusp of the mandibular 1st molar is | distofacial |
| The roots of the maxillary second molar tend to be | less divergent and have greater distal inclinations. |
| The teeth whose function is primarily biting | incisors and canines |
| tooth with longest root | maxillary canine |
| groove pattern for mandibular first molar is considered | Y |
| groove pattern for mandibular second molar is | + |
| mesial marginal ridge is located more cervically than distal | mandibular 1st premolar |
| oblique ride of a maxillary molar forms the ____ bound of the central fossa | distal |
| a transverse ridge results form the union of which triangular ridges | facial and lingual |
| for multirootd teeth _____ continues to form most rapidly at the floor and roof the pulp chamber | dentin |
| has two roots and three canals | mandibular 1st molars (usually two on mesial root) |
| primary tooth generally with an oblique ridge | primary maxillary 2nd molar |
| the mesiolingual cusp of the maxillary molars occludes in which fossa of the mandibular molars? | central fossa |
| the distobuccal cusp of the mandibular molars occludes in which fossa of the maxillary molars | central fossa |
| which primary molar exhibits more cusps (1st or 2nd) | 2nd |
| occlusal outline of a mandibular first molar | pentagon |
| lingual concavity of the maxillary anterior teeth is most influenced by? | the side shift of the mandible |
| side shift of the mandible is also known as | the bennett movement |
| the non-molar tooth that most frequently has a mesial and distal pulp form is the | maxillary central incisor |
| the cervical ridge is most prominent for primary maxillary teeth on which surface of the 1st molar? | MF |
| non-working condyle moves | downward, forward and medial |
| the non-molar tooth that most frequently exhibits three roots is the | maxillary 1st premolar |
| the dentin that is most highly mineralized is | intra or peritubular dentin |
| primary spacing for anterior teeth is most frequently caused by | growth of the dental arches |
| acute angles in maxillary molars | MF and DL |
| obtuse angles in max molars | ML and DF |
| the obtuse corners coincide with the direction of the | oblique ridge |
| occlusal outline for maxillary 1st molar | rhomboidal |
| # of teeth that normally have a cingulum | 12 (all anterior teeth) |
| which anterior tooth most frequently exhibits a bifurcated root? and what type of roots? | mandibular canine - creates a facial and lingual |
| the cross section of the mandibular canine at the CEJ is? and which end is wider mesiodistally? | mandibular canine wider at the labial |
| non molar tooth least likely to have a bifurcated root | maxillary central incisor |
| the size and position of the cusps are more identical for the ___ max premolar than the ___ | 2nd than first |
| most pronouced development marginal groove of any maxillary tooth? | maxillary 1st premolar |
| y type mandibular has how many cusps | 3 cusps 1 facial and 2 lingual |
| most bilaterally symmetrical tooth | primary and permanent mandibular central incisor |
| tooth with most prominent marginal ridges of all anterior teeth? | maxillary lateral incisors |
| deepest and most distinct lingual fossa's of all anterior teeth? | maxillary lateral incisors |
| posterior tooth with the greatest cervico-occlusal crown height | maxillary 1st premolar |
| oblique ride connects | mesiolingual and distofacial cusps |
| mandibular 1st premolar from occlusal | diamond shaped |
| last primary tooth to erupt | maxillary second molars |
| sofest dental tissue | cementum |
| hardest dental tissue | enamel |
| all premolars are wider | faciolingually than mesiodistally |
| which premolar has two cusps of equal height | 2nd premolar |
| upper compartment of the tmj is the space | between the disc and the articular fossa and eminence |
| when there is a 4th pulp canal in the maxillary first molar it is present in which canal? | mesiofacial |
| crwon form of canines from a facial view | pentagonal |
| which tooth has a mesial concavity that makes it difficult to adapt a matrix band | maxillary 1st premolar |
| viewed from the occlusal on the mandibular arch how many teeth are in a straight line? | 4 |
| which primary posterior tooth has a oblique and transverse ridge? | primary 2nd molar |
| the thickest section of the articular disc when seen in the sagittal plane is? | the posterior border |
| most deviation in crown morphology | molars, maxillary lateral, mandibular 2 pm |
| which fibers of periodontal ligament provide major support during tooth function? | oblique fibers |
| largest root of maxillary molar | palatal |
| small root fo maxillary molar | distofacial |
| pulp chamber of a mature tooth contains | blood vessels and nerves |
| mandibular primate space | canine and first molar |
| in a healthy mouth, the alveolar process is thinnest around ? | the facial of the mandibular central incisors |
| crown of mandibular second molar inclines | to the mesial and lingual |
| epithelial attachment is always an actual part of | tooth's periodontium |
| the maxillary first primary molar has a crown that resembles? a root that resembles? | crown: permanent premolar root: permanent molar |
| what plays the greatest role in disclusing the posterior teeth in latero-protrusvie? | anterior guidance |
| viewed from the occlusal, the coronal outline of the mandibular second premolar | pentagonal |
| ligaments in TMJ serve to | protect surround and supporting tissues from damage |
| facial view of a primary mandibular 1st molar the CEJ is most apically positioned in? | the mesial third |
| a key feature that differentiates a mandibular 1st and 2nd molar is | the number of developmental grooves and cusps |
| the premolar that has a longer mesio-facial cusp ridge than disto-facial cusp ridge is | maxillary first |
| the facial cusp of the maxillary 1st premolar is offset to | the distal |
| a common trait of maxillary premolars is that their lingual cusps are offset to | the mesial |
| for molar teeth the root canals join the pulp chamber | apical to the cementoenamel junction |
| which fibers travel from one root to an adjacent root surface | transseptal |
| eruption pattern for primary teeth | centrals laterals 1st molars canines and 2nd molars |
| in the rare event of a second canal for a mandibular 2st premolar it is most likely located to the | lingual |
| the mesiolingual developmental groove on tooth 21 originates from | the occlusal pit |
| the mesiolingual developmental groove on 21 extends | onto the proximal surface |
| the physiological rest position is established when the mastication muscles are | in tonic quilibrium |
| which ridge of an anterior tooth is the first to calcify | the incisal ridge |
| which has a shorter distolingual groove Max first or 2nd molar | 1st shorter |
| principle muscles that retrude the mandible are | the posterior fibers of the temporalis |
| hypercementosis is an excess of calcified tissue formation at | the root apex |
| in a midroot cross section of first molars which is the largest | mesial of mandibular |
| premolar with the steepest cusp inclines is | the maxillary 1st premolar |
| the primary mandibular 1st molar usual exhibits | a distal triangular fossa |
| the maxillary lateral incsor is usually equal to or larger than the maxillary central in | root length |
| distoincisal angle of the maxillary lateral has | the greatest convexity of all maxillary anterior teeth |
| the geometric orm of anterior teeth when view form the proximal is | triangular |
| which cusp of th emaxillary molar that is not part of the molar cusp triangle | the distolingual cusp |
| mandibular molars have long axis of their root apices ____ and their crowns _______ | facial, ligual |
| caries stimulates the production of? | secondary dentin |
| largest cusp of the mandibular first molar is? | mesiofacial |
| in a cerical cross section the root fo the mandibular canine is _____ in a mesio distal direction | flattened |
| the primary central incsor exhibits a prominent cervical ridge on? | both the facial and lingual surfaces |
| what is the predominant connectve tissue for peridontal ligaments | collagenous |
| the mandibular 1st premolar has? | a unique prominent triangular ridge |
| the mandibular 1st premolar has frequently both a separate? | mesial and distal pit |
| the TMJ ligament initaties translation of? | the condyle down the articular eminence |
| tooth most likely forced into the maxillary sinus during an extraction | first molar |
| extrinsic muscle that causes tongue to retract | styloglossus |
| facial view the apex of hte lingual root is in line with | the facial groove of the tooth |
| premolar that is most likely to have a crescent shaped cnetral developmental groove | mandibular 2nd |
| molar most frequently only has three cusps | maxillary 3rd molar |
| identifying characteristic for mandibular 1st premolar | mesiolingual groove |
| bennett movement occurs during | the earliest stage of lateral movemnt |
| which muscles are primarily responsible for protrusive movemnt? | the lateral pterygoids |
| the lingual cusp of the mandibular first premolar is approximately | 2/3rds the height of the facial cusp |
| first succedaneous tooth to erupt in the mouth is | the mandibular central incisor |
| same # of occlusal pits as the mandibular 1st molar | Y type mandibular 2nd premolar |
| from the facial or lingual, canines have which outline? | pentagonal |
| maxillary 1st molar has a _____ that can pose speical problems in matrix placement | distal concavity |
| cervial cross section of maxillary 1st premolar is? | kidney shaped root outline |
| cervical cross section of the maxillary 1st premolar exhibits? | a kidney shaped pulp chamber floor |
| which lobe of the maxillary canine includes the cusp tip? | the middle facial lobe |
| the number of lobes that form the anterior teeth i | 4 |
| number of lobes that form from the posterior teeth coincides with | number of cusps |
| the _______ is the anterior poterior curvature of the occlusal surfaces as seen in the facial view | curve of spee |
| from a facial view the crown of a primary ? has a mesio-incisal slope longer than the distofacial | canine |
| which primary tooth lacks and identifiable root trunk? | primary molar |
| the apex of a tooth is fully formed how long after it erupts in the mouth | 2-3 years |
| the _____ lateral pterygoid is the prime mover in effecting a left working movement | right |
| smallest cusp of the mandibular 1st molar | distal cusp |
| cross sectional outline at the cervial is ______ for the permanent maxillary 2nd molar | trinagular |
| the TMJ has ____ synovial cavities | 2 |
| cervial line of permanent teeth have its greatest depth of curvature on which surface? | mesial |
| from a proximal view, the incisal ridge of the crown is on line | with the center of the root |
| which primary tooth has the most distinct transverse ridge | primary mandibular first molar |
| the bennett movement is | the bodily shift of the mandible toward the working condyle |
| which groove of a maxillary lateral incisor complicates root planning | distolingual groove |
| oblique periodontal ligament fibers are most liekly to be found | in the middle 1/3 of the root |
| mandibular centrals and laterals most frequently have concave areas on | mesial and distal root surfaces |
| which tooth has a continuous convex facial surface from incisal to apical end | mandibular canine |
| accessory pulp canals may be found | in the cervial third of the root and in furcation areas of molars |
| accessory pulp canals may contain | nervous and vascular tissue |
| accesory pulp canals allow the pulow tissue to | communicate witht he periodontal ligament spaces |
| TMJ is protected by | synovial fluid, fibrocartilage, ligament, suspension and masticatory muscles |
| the function of the pulp is | to form and supply nutrients to dentin and trasmit sensory stimuli |
| in delayed resorption of primary incisors the permanent incisors usually erupt | lingually |
| the disk of the TMJ is moved forward principally by the | lateral pterygoid |
| primary molars differ from permanent molars in that their roots | are more divergent |
| the primary teeth that differ most from permanent teeth are the | first molars |
| the highest and sharpest cusp on a primary mandibular first molar is | the mesiolingual |
| primary funciton of dental pulp is | to form dentin |
| shortest interdental papilla is between | the mandibular second premolar and first molar |
| in cross section the root of the mandibular canine is | irregularly oval |
| percentage of dentin that is organic is | 20-30% |
| the anterior tooth most likely to demonstrate a lingual pit cavity | maxillary lateral incisor |
| calcification of the primary roots is normally completed at | 3-4 years of age |
| approximately ___ of permanent root formation is completed at the time the tooth erupts | 50% |
| _______ almost exclusviely determines intercuspal position | teeth contact |
| psysiological rest position is | a muscle guide position |
| centric relation is | a ligament guided postion |
| centric occlusion is | intercusupal position |
| the ideal position and height of lingual cusps of ______ accomodates working movement | mandibular 1st moar |
| start at 203 |
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