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Molars
LLU Tooth Morphology of High Yield * Questions & Blue Book Questions
| Question | Answer |
|---|---|
| "O-C dimension is less than M-D and F-L (FL>MD>OC) " | "Maxillary Molars ; also: MAXILLARY MOLARS, Maxillary 3rd Molar, Maxillary 2nd Molar, Maxillary 1st Molar, (think ""Max=Fat...Molars Occlude"")" |
| "Presence of oblique ridge and distolingual groove* " | Maxillary Molars |
| What is the Maxillary geometric crown shape? | "Crowns are trapezoidal from facial, lingual, proximal views " |
| What is the Maxillary Molar facial HOC? | Facial HOC at cervical third (like all permanent teeth) |
| What is the Maxillary Molar Lingual HOC? | "Lingual HOC at middle third -- on all _molars & _premolars. " |
| Rank the root branches on the Maxillary Molars? | Usually 3 root branches: L>MB>DB (largest to smallest) |
| "Initial calcification: at birth* " | Maxillary 1st Molars |
| "DB cusp sharper* (sharpest of 4 cusps) " | Maxillary 1st Molars |
| "M-D width as wide or wider lingually than facially* ( very little lingual taper) ( MDL>=MDF) " | "Maxillary 1st Molars ; (similar to Man.PreM.: FL>=MD) " |
| Explain: Cusp of Carabelli* | "Maxillary 1st Molar Lingual surface of ML cusp Varies in size: non-existent to prominent" |
| "Lingual root depression* " | Maxillary 1st Molars |
| "Pronounced distal cervical crown/root concavity* " | "Max 1st premolar on mesial. Max 1st molar on distal. " |
| "Largest F-L dimension of any tooth* " | Maxillary 1st Molars |
| Maxillary 1st Molar - Geometric form | Rhomboidal OR Heart-shape (5-sided-pentagonal)(Leans Mesialy) |
| "Occlusal View: F-L and M-D dimensions more nearly similar* " | Maxillary 1st Molars |
| "M-D width as wide or wider lingually than facially* " | Maxillary 1st Molars |
| Cusp "Trigon" | "Maxillary 1st Molars . Cusps: ML > MB > DB > DL (arrow in out in) " |
| "Oblique Ridge - About same height as the marginal ridges* " | "Maxillary 1st Molars . Has Transvers and Oblique Ridge." |
| "Only root: Wider M-D > F-L* " | "Maxillary 1st Molars . ""M-D-Blade-like root"" " |
| "MB root 2nd largest. Apex in line with MB cusp tip.* DB root Smallest of three. " | "Maxillary 1st Molars . So Think: Lingual > MB > DB Think: Long Molar Deep (roots) on Max 1st M. (arrow in out in - same as cusps) " |
| "DB root area may have pronounced cervical concavity* " | Maxillary 1st Molars |
| "MB root tip in line with buccal groove* " | Maxillary 2nd Molars |
| "MB root apex in line with buccal groove* " | Maxillary 2nd Molars |
| "Maxillary 1st or 2nd? M-D and F-L dimensions more similar with _____ …narrower M-D with ______?" | "Maxillary 1st and 2nd Molars: M-D and F-L dimensions more similar (square) with 1st, …narrower M-D with 2nd* " |
| "Maxillary 1st or 2nd? What are the MB Cusp or Buccal Groove to root alignments? " | "Maxillary 1st and 2nd Molars: MB root apex in line with MB cusp tip with first, Vs. in line with buccal groove with second* " |
| "Only maxillary tooth that has single opposing tooth* " | Maxillary 3rd Molar |
| "Smallest of all molars - shortest O-C dimension of any tooth* " | Maxillary 3rd Molar |
| "Shorter root: Crown to root ratio nearly 1:1* " | Maxillary 3rd Molar |
| "More supplemental occlusal grooves* " | Maxillary 3rd Molar |
| Has the shortest occlusocervical crown dimension of any tooth in the mouth | Maxillary 3rd Molar |
| The maxillary third molar has the shortest root in the mouth? | "Maxillary & Mandibular 3rd Molar . Maxillary 3rd Molar has the shortest root in the mouth (according to four authors) vs. (two text books found:) Max. & Man. 3rd shared the shortest root dimension. " |
| Greatest morphologic variation of any teeth. | "Maxillary & Mandibular 3rd Molar . " |
| The palatal root have a greater mesiodistal dimension than faciolingual dimension, a unique characteristic to these roots. | "Maxillary 1st Molar, & Maxillary 2nd Molar" |
| The oblique ridge is a unique feature. | "Maxillary 1st Molar, & Maxillary 2nd Molar" |
| The presence of a distolingual (distal oblique) groove is a unique aspect. | "Maxillary 1st Molar, & Maxillary 2nd Molar" |
| The tricuspid (triangular) arrangement of the msiolabial, distofacial and mesiolingual cusps is unique. | "Maxillary 1st Molar, & Maxillary 2nd Molar" |
| The mesiolingual cusp usually has two triangular ridges. | "Maxillary 1st Molar, & Maxillary 2nd Molar" |
| The distal proximal contact is centered both faciolingually and occlusocervical, a characteristic shared with which four other teeth? | "Maxillary 1st Molar, & Maxillary 2nd Molar: shared with ( Max.Lat.Incisor, Max.Canine, , Man.2nd.M. )" |
| Has the largest faciolingual dimension of any tooth? | Maxillary 1st Molar |
| The mesiodistal and faciolingual dimension are more nearly equal than any other posterior teeth? | Maxillary 1st Molar |
| "The mesiodistal dimension of the lingual half of this tooth is often slightly greater that the mesiodistal dimension of the facial half--a unique feature frequently shared with 3-cusp mandibular second premolars. | Maxillary 1st Molar In other words, the this tooth does not have the usual lingual crown taper." |
| Has 5th cusp (Cusp of Carabelli) attached to the mesiolingual cusp, a characteristic not present on other ______? | Maxillary 1st Molar; not present on other Max.Molars |
| When viewed facially, the two facial roots curve laterally and then toward each other in the manner that resembles the angles of a pair of pliers, a unique form shared with only the _____________. | "Maxillary 1st Molar. Shared with mandibular first molar." |
| Has the largest mesiodistal dimension of any tooth | Mandibular 1st Molars |
| The occlusocervical and faciolingual dimensions of the ____ are greater than any other mandibular ____ . | Mandibular 1st Molars |
| ___ have three facial cusps, as do some mandibuar _____, a unique characteristic among posterior teeth. | Mandibular 1st Molars; Mandibular 3rd Molars |
| Has the longest root of any molar. | Mandibular 1st Molars |
| Has the greatest mesiodistal root separation of any molar. | Mandibular First Molars |
| The mesial root has the greatest faciolingual dimension of any root in the mouth. | Mandibular First Molars |
| Has the shortest occlusocervical crown dimension of any mandibular tooth. | Mandibular 3rd Molars |
| Some dispute among authors of which tooth and which arch has the shortest root? | Mandibular and Maxillary 3rd Molars |
| _____ along with ____ have the greatest morphologic variation of any teeth. | Mandibular 3rd Molars, Maxillary 3rd Molors |
| Often have bulbous crowns, more bulbous than other mandibular teeth when viewed proximally. | Mandibular 3rd Molars |
| Some _____ have three facial cusps, as do ______, a unique characteristic amongst posterior teeth. | "Mandibular 3rd Molars; Mandibular 1st Molars" |
| When viewed occlusally, the _______ has a mesiofacial prominance, a unique feature for _________ . | mandibular second molar , unique for mandibular molars. |
| The distal proximal contact is centered both faciolingually and occlusocervical, a characteristic shared with the distal contact on which four other teeth? | "Maxillary Lateral Incisor, Maxillary Canine, Maxillary 1st Molar, and Maxillary 2nd Molar" |
| "Two lingual cusps about same size* " | "Mandibular Molars " |
| "Wider M-D than F-L* " | "Mandibular Molars; MD > FL , MD Man.M = FL Max.M " |
| "Initial calcification: at birth* " | "Mandibular 1st Molars; Cal En Er Rt @0 3 6 9 " |
| "Buccal surface - largest surface of any tooth " | "Mandibular 1st Molars " |
| "CE line more occlusal on lingual than buccal ~ 1 mm " | "Mandibular 1st Molars " |
| "Root length of lingual > buccal length " | "Mandibular 1st Molars " |
| "More symmetrical than first molar* " | "Mandibular 2nd Molars " |
| "More symmetrical and simple than first molar* " | "Mandibular 2nd Molars " |
| Less lingual taper than first | Mandibular 2nd Molar, less taper than 1st Molar |
| Five cusps: MB>ML>DL>DB>D (largest to smallest) and Lingual cusps are the tallest. | Mandibular 1st Molars |
| Shortest O-C of any mandibular tooth | Mandibular 3rd Molars |
| Largest crown in mouth | Maxillary 1st Molar |
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Carski7
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