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Dental Anatomy U 3

Dental Anatomy Unit 3, Permanent Max/Man Central/laterals

QuestionAnswer
what are the incisors closest to the midline? maxillary/mandibular centrals
what are the incisors distal to the central incisor? Maxillary/mandibular laterals
which crowns are usually the largest? (centrals/laterals?) central incisor crowns are usually larger than lateral incisors
incisors of what arch resemble each other more closely? same arch resemble each other more closely than those of the opposing arch
what crowns are usually larger? (maxillary incisor crowns/ mandibular incisor crowns) maxillary incisor crowns are usually larger than mandibular especially mesiodistally
what is the except to maxillary incisor crowns being larger than mandibular incisor? mandibular arch, lateral incisor crown and root are generally larger than those of the central incisors
in what arch are the lateral incisor crowns and roots generally larger than those of the central incisors? mandibular
what are the functions of permanent incisors? mastication, esthetics, phonetics
what do the permanent incisors do for mastication? biting, cutting, incising and shearing
what do the permanent incisors do for esthetics? size, shape, color and manner of placement all contribute to person's appearance also provide necessary support for normal profile of lips and face
what do the permanent incisors do for phonetics? necessary for execution of certain sounds
what distinguishes incisors on their incisal edge? flattened edge, no cusps
what distinguishable feature is on incisal edges? mamelons or rounded projections on incisal edge
what distinguishes incisors on their positioning and angulation of marginal ridges? mesial and distal located lingually parallel to long axis of the tooth
what distinguishes incisors on their lingual fossa and cingulum? exhibit a large concavity which covers the incisal half og lingual surface where lingual fossa are found
which aspect do the permanent maxillary incisors have larger crowns than mandibular incisors especially? mediodistally
which have larger crowns, permanent maxillary central incisors or permanent mandibular incisors permanent maxillary incisors
what is the tooth number for the permanent maxillary central incisor on the right side of the mouth 8
what is the tooth number for the permanent maxillary central incisor on the left side of the mouth 9
which tooth is located at number 8 in the mouth permanent maxillary incisor on right side
which tooth is located at number 9 in the mouth permanent maxillary incisor on left side
in general, the crown of the permanent maxillary central incisors is longer _____ on the _____ rather than the ____ in general, the crown of the permanent maxillary incisors is longer incisocervically on the medial than the distal
which side of the crown on the permanent maxillary central incisor is longer? mesial or distal? mesial is longer than distal
from the labial or lingual aspect, what are permanent maxillary central incisors shaped like? trapezoid
from the proximal perspective (mesial/distal) they are shaped like triangle
what is the special consideration for permanent maxillary central incisors? widest mesiodistally of any tooth largest incisors of both arches
when do permanent maxillary central incisors erupt? 7-8 years
the permanent maxillary central incisor crown viewed from the labial aspect is more ____ than it is ___ longer than it is wide
when does the permanent maxillary central incisor complete root formation? 10 years
what does the labial surface of permanent maxillary central incisor look like? convex greates at cervical 1/3 and reaches flatness towards the incisal edge
what does the mesial outline of the permanent maxillary central incisor look like from the labial surface? convex but can be nearly straight the height of contour is the greatest at the incisal 1/3 near the mesioincisal angle
what is rather sharp in the mesial outline of the permanent maxillary central incisor viewed from the labial surface? mesioincisal angle is rather sharp
what does the distal outline viewed from the labial surface look like on permanent maxillary central incisors? also convex, but more rounded than mesial crest of curvature located in incisal 1/3 but farther cervically than medial outline
where does the CEJ curve towards when viewing the permanent maxillary central incisors from the labial aspect curves evenly towards the root (labially)
when viewing the permanent maxillary central incisor from the labial aspect, where is the crown more narrow? crown is narrower at the cervical region than at the incisal region
how is the lingual surface of the permanent maxillary central incisors shaped? lingual is concave (fossa 2/3 to 1/2) then convex (cingulum)
what are the boundaries for the lingual fossa for permanent maxillary central incisors? mesial marginal ridge, distal marginal ridge, incisal edge, and cingulum may have ridges that make a "W"
linguogingingival groove and lingual put may be found in... lingual surface of permanent maxillary central incisors but more common in maxillary laterals
what is narrower in the lingual aspect of the maxillary central incisors? lingual aspect is narrower mesiodistally than labial
mesial and distal margins converge more towards where for the lingual view of the permanent maxillary central incisors converge more towards the gingiva
what does the cervical outline look like from the lingual surface of the permanent maxillary central incisors? cervical outline has slightly greater depth of curvature and is assymetrical area of maximum curvature offset to the distal
where is the lingual crest of curvature located in the lingual view of the permanent maxillary central incisors? cervical 1/3 greatest convexity at cingulum
where is the permanent maxillary central incisor convex when you look at it from the mesial aspect? incisocervically and linguolabilly
the labial out like and the lingual outline have a crest of curvature in the what for the permanent maxillary central incisors viewed from the medial aspect? labial is convex and lingual is convex and concave and both crests of curvature are in the cervical third
cervical margin is located where in the mesial aspect of the permanent maxillary central incisors CEJ curves towards the incisal (evenly)
where is the greatest depth of curvature of CEJ of any tooth surface in the mouth? mesial aspect of the permanent maxillary central incisors
what is an incisal ridge? rounded and found on newly erupted teeth
what is an incisal edge? pointed and worn down
where is the contact area located in the mesial aspect of the permanent maxillary central incisors located? incisal 1/3 centered labiolingually
what is found in the distal aspect of the permanent maxillary central incisors? smaller and shorter than mesial more convex CEJ is not as curved incisally contact area is smaller but still in incisal third
why is the contact area smaller on the distal aspect of the permanent maxillary central incisors? because it contacts the lateral incisor which is a smaller tooth
what does the incisal aspect of permanent maxillary central incisors shaped like? triangle incisal edge is straight mesiodistally centered over the root
where is the tooth narrower on the incisal aspect of permanent maxillary central incisors? narrower on the mesiodistal of the lingual than on the labial lingual is narrower than the labial
which are the more distinct line angles on the incisal aspect of permanent maxillary central incisors? labial line angles are more distinct than lingual line angles
which outline is more convex on the incisal aspect of the maxillary centrals? lingual outline is more convex than the labial
what does the root look like on the permanent maxillary central incisors? single, conical, straight and tapers to a rounded apex
what does the cross section look like for the permanent maxillary central incisors? rounded triangular outline (narrow lingually)
what is the special consideration for the permanent maxillary central incisors when it comes to root length root length is 1 1/2 times the length of the crown
what is dwarfed root and where can it be found? short root which may endanger the tooth's longevity maxillary central incisors
what is hutchinson's incisor and where can it be found? congenital syphilis causes it screwdriver shaped crown when viewed from the labial aspect maxillary central incisors
talon cusp is what and where can it be found? large accessory cusp on the lingual surface looks like a phillip's head screwdriver maxillary central incisors
supernumerary teeth are what and where can the be found mesiodens or extra teeth maxillary central incisors
what is tooth number 7 permanent lateral maxillary incisor right
what is tooth number 10 permanent lateral maxillary incisor left
what is the tooth number for the permanent lateral maxillary incisor on the right side of the mouth 7
what is the tooth number for the permanent lateral maxillary incisor on the left side of the mouth 10
lateral maxillary incisors generally share contacts with... mesial contacts with central incisors distal contact with canine
what do lateral maxillary incisors look like compared with central incisors generally? smaller in all measurements to the central incisors except in root length which is the same
which tooth display greater variation in form than any other permanent tooth? upper laterals or permanent lateral maxillary incisors
what is the eruption schedule for permanent lateral maxillary incisors? 8 to 9 years
when is the root complete on lateral maxillary incisors? 11 years
what does the mesial outline of the labial surface of lateral maxillary incisors look like more convex than in central incisors with more rounded angles
where is the crest of curvature located in the mesial outline of the labial surface of lateral maxillary incisors? located farther gingivally in the incisal 1/3 near the junction with the middle 3rd
what does the distal outline of the labial surface of the lateral maxillary incisors look like always more rounded than that of central with more cervially placed crest of curvature
which side is more rounded on the maxillary lateral incisors on the labial aspect distalincisal angle is more rounded than the mesioincisal angle
how many mamelons is usually round in the lateral maxillary central incisors? 2 mamelons
how does the insical edge look on the labial surface of the lateral maxillary incisors? not as straight as centrals, exhibits greatest rounding of any incisor
what tooth exhibits the greatest rounded of any incisor? maxillary lateral incisors
what does the cervical outline look like from the labial surface of the maxillary lateral incisors labial surface is more convex both mesiodistally and incisogingivally than centrals
what does the mesial margin look like from the lingual aspect of the lateral maxillary incisors? same like centrals
what does the distal margin look like from the lingual aspect of the lateral maxillary incisors? distoincisal angle is more rounded
what is the cervical outline look like for the lingual aspect of the lateral maxillary incisors? CEJ curves apical but is offset distally
what is more prominent in the lingual aspect of the lateral maxillary incisors than the central incisors? mesial and distal marginal ridges are more prominent and the lingual fossa is deeper than in centrals
where are the linguogingival groove and lingual put most likely to occur? lingual aspect of the lateral maxillary incisors
what is the linguogingival fissure? extends distally onto the cingulum from the lingual pit in a slightly horozontal direction and can be found on the lingual aspect of the lateral maxilalry incisors
where is the height of contour in the lingual aspect of the lateral maxillary incisors? cervical 1/3 where the greatest curvature of the cingulum is
where is the contact area located in the mesial aspect of the lateral maxillary incisors? contact area incisal 1/3 near junction
what does the cervical 1/3 look like in the mesial aspect of the lateral maxillary incisors? exhibits less depth of curvature than mesial of centrals
what does the mesial aspect look like overall when compared to the centrals on lateral maxillary incisors similar but with lessoned dimensions
what does the distal aspect of the maxillary lateral incisors look like smaller and more convex in all dimension than the mesial
where is the contact area in the distal aspect of the maxillary lateral incisors look like? contact area shorter and not as incisally placed than mesial
what does the cervical line look like for the distal aspect of the lateral maxillary incisors cervical line shows less curvature than mesial
what does the incisal aspect of the lateral maxillary incisors look like? rhomboidal shaped cingulum more prominent but overall tooth is smaller
when looking at the incisal aspect of the lateral maxillary incisors, what has more convexity than centrals? labially and lingually have more convexity than centrals
what does the root look like for lateral maxillary incisors? single root, wider labiolingually than mesiodistally root of laterals is longer than crowns of centrals roots are the same length as the laterals
what does the apex look like on root surfaces of lateral maxillary teeth apex is sharper, apical 1/3 may be deflected towards the distal
what does the root look like in cross section for the lateral maxillary teeth? ovoid in cross section
what is a tubercle and where can you find it? projection on the cingulum lateral maxillary incisors
what is a linguogingival fissure and where can you find it? fissure from lingual pit onto distal of cingulum lateral maxillary incisors
what is a peg lateral and where can you find it? fiminutive peg shaped crown form lack of development in mesial and distal portions lateral maxillary incisors
what is agenesis and where can you find it congenitally missing teeth lateral maxillary incisors
what is dens in dente and where can you find it tooth within a tooth lingual pit entrance site where enamel and dentin invaginate tooth's pulp cavity maxillary lateral incisors
distorted crowns and unusual root curvatures are mostly seen on... maxillary later incisors
what are the simplest and least variable teeth in the mouth? mandibular incisors
what are the smallest permanent teeth mandibular incisors
what is the special characteristics of mandibular incisors central is slightly smaller than the lateral centrals and laters more closely resemble each other than maxillary incisors
what is the general shape of mandibular incisors when compared to maxillary incisors? longer incisocervically and narrower mesiodistally
what has the smallest crown size of any permanent tooth? central mandibular incisors
when does the central mandibular incisor erupt? 6-7 yers
when is the completion of root in the central mandibular incisor 9 years
from the lingual aspect, the mesial outline of the central mandibular incisor generally looks like tapers evenly towards gingiva in a nearly straight line mesioincisal angle is sharp
where is the height of contour in the mesial outline from the labial aspect of the mandibular central incisor? incisal 1/3 close to the incisal margin
distal outline of the labial aspect of the mandibular incisor looks like... same as mesial
what does the incisal outline of the labial aspect of the mandibular incisor look like? 3 mamelons if present after wear will have incisal edge that is straight at right angle with long axis of the tooth
what does the cervical outline look like from the labial aspect of the mandibular central incisor symmetrically curved towards the root very slightly convex mediodistally and labiolingually
what type of shape does the labial aspect have for mandibular central incisors? trapezoid
the CEJ is located where on the lingual aspect for permanent mandibular central incisors? further from incisal when compared to labial surface
how does the lingual surface of the permanent mandibular central incisors generally look? no grooves, pits or fissures, usually a smooth surface
from the mesial aspect of the permanent mandibular central incisors what does the labial outline do labial margin slopes in a straight to slightly convex line from incisal ridge to crest of curvature rest is convex in remaining 1/3 of cervical area
what does the lingual outline look like for the mandibular central incisors convex in incisal 2/3 and concave
Created by: Chobchi