0% 0 Oral Anatomy Quiz 2 1 / 50 Articular disc of tmj receives insertion from which muscle______________? Lateral pterygoid Temporalis Massetor Medial pterygoid 2 / 50 Which of the following muscle helps in depressing the mandible ___________? Massetor Medial pterygoid Lateral pterygoid Temporalis 3 / 50 An 8 ? yr old child comes to your clinic with large front teeth having jagged margins, what is the treatment plan for this patient ? Smoothen the jagged margins and apply fluoride varnish Build up other teeth to large size Assure him and send him back Extraction of big teeth 4 / 50 When viewed occlusally, a primary mandibular second molar closely resembles which of the following mandibular teeth ? Permanent second molar Primary first molar Second premolar Permanent first molar 5 / 50 Curve passing through the buccal and lingual cusp tips of the mandibular buccal teeth is______________? Wilson curve Mansoon curve Caternary curve Curve of spee 6 / 50 The biting forces at molar region during mastication is_______________? 50 to 75 pounds 90 to 200 pounds 20 to 55 pounds 30 to 75 pounds 7 / 50 In which of the tooth is the mesiodistal measurements is greater lingually than facially________________? Maxillary 1stpremolar Mandibular 1st premolar Mandibular 2ndpremolar Maxillary 1st molar 8 / 50 With respect to their permanent successors the sum of the mesidodistal diameters of the first and second decidous molar is generally ____________? The same Greater Less Not related 9 / 50 On which of the following permanent teeth is it most difficult to distinguish between mesial and distal aspects ? Mandibular central incisor Mandibular second premolar Mandibular lateral incisor Maxillary central incisor 10 / 50 Tritubercular cusps are_______________? All of the above DB MB ML 11 / 50 The widest incisal embrasure is normally found between which of the following permanent maxillary teeth _____________? Central incisors First and 2nd premolar Lateral incisor and canine Central and lateral incisors 12 / 50 Which of the following permanent teeth is usually bilaterally symmetric when viewed labially and incissaly ______________? Mandibular central incisor Maxillary central incisor Mandibular canine Mandibular lateral incisor 13 / 50 Which of the following is not a structural element of the temporomandibular joint ? Sigmoid notch Joint cavities Capsular ligament Articular disc 14 / 50 The permanent mandibular second molar differs from the permanent mandibular first molar in number of ______________? Marginal ridges Lingual grooves Cusps Roots 15 / 50 No. of cusps in mandibular 1st molar_____________? 6 3 5 4 16 / 50 Which of these teeth are highly sturdy and usually the last ones to be lost ? Premolars Central incisors First molar Canines 17 / 50 Mesiolingual grooves may be found on which of the following permanent teeth ______________? Maxillary first molars Mandibular second molars Maxillary canines Mandibular first premolars 18 / 50 Cusp of carbelli is present on ________ surface of the permanent maxillary molar ? Buccal surface Palatal surface Mesial surface Mesial half of the palatal surface 19 / 50 Which of the following premolars has a mesial marginal ridge more cervical than the distal marginal ridge________________? Maxillary 1st premolar Maxillary 2ndpremolar Mandibular 1st premolar Mandibular 2nd premolar 20 / 50 Largest cusp in permanent mandibular first molar is__________________? Distobuccal Distal Mesio lingual Mesiobuccal 21 / 50 A child has 12 permanent and 12 decidous teeth, what is his age____________? 13? years 11? years 8? years 4? years 22 / 50 Articular disc of TMJ is__________? Thickest posteriorly Strengthened by lateral pterygoid All of the above Narrow in the centre 23 / 50 Mesial concavity making the prognosis poor for a furcation involvement is present in_____________? Maxillary canine Maxillary 1st premolar Maxillary 2nd premolar Mandibular 1st premolar 24 / 50 Palatogingival groove is found in______________? Maxillary first molar Maxillary lateral incisor Maxillary first premolar All of the above 25 / 50 Longest tooth of the maxillary arch is_____________? First premolar Decidous incisor Permanent incisor Permanent canine 26 / 50 Mandibular second premolar 3- cusp type id developed from_______________? 4 6 5 3 27 / 50 Roots of primary and secondary teeth are different in that the primary roots are more divergent and flaring. The other difference _____________? Primary roots show less a accessory and lateral canals None of the above Primary roots resorb more easily Primary roots are shorter 28 / 50 Dentition of humans is_______________? Herbivorous Carnivorous Omnivorous None of the above 29 / 50 Calcification of roots of decidous teeth is completed by_____________? 4 years 8 years 2 years 6 years 30 / 50 The shortest root on a maxillary first molar is_____________? Disto ? buccal All are of equal length Lingual Mesio- buccal 31 / 50 The usual order of appearance of the primary teeth in the mouth is____________? Central incisors, first molars, lateral incisors, second molars, canines Central incisors, lateral incisors, first molars canines, second molars Central incisors, lateral incisors, first molars second molars, canines Central incisors, lateral incisors, canines, second molars, first molars 32 / 50 Calcification of all teeth except last molars are completed by____________? 8 years 4 years 2 years 6 years 33 / 50 Facial occlusal line in the maxillary arch is formed by_______________? Supporting cusps Non- supporting cusps Centric holding cusps Stamp cusps 34 / 50 The premolar alveoli are what shape in cross section_____________? Kidney shaped Oval Rectangular Triangular 35 / 50 Which of the following is true for permanent teeth________________? Maxillary roots are inclined distally where as Mandibular roots are inclined mesially Buccal cusps of lower and lingual cusps of upper are the functional cusp Maxillary molars are buccally inclined and Mandibular molars are inclined lingually All of the above 36 / 50 All of the following muscles are elevators of the mandible except______________? Medial pterygoid Digastric Massetor Temporalis 37 / 50 Desmodont is another name for_____________? Dehiscence The tooth with one wall pocket periodontal ligament Tooth with three walled pocket 38 / 50 In the triangle formed by the projection of the orifices of the canals of a maxillary molar, the_________________? Angle at the mesio facial canal is obtuse Line connecting mesial with lingual is longest Line connecting mesial with distal is longest Line connecting distal with lingual is longest 39 / 50 Posterior embrasures are generally larger on the lingual than on the facial, with the contact area within the facial moiety, except between maxillary_______________? 1st and 2ndmolar First molar and 2nd premolar 1st premolar and cane Premolars 40 / 50 Thinnest labial plate is found in the region of____________? Upper central incisors Lower canines Upper canines Lower central incisors 41 / 50 Tooth with most variable occlusal anatomy________________? Mandibular third molar Maxillary third molar Mandibular second premolar Maxillary second premolar 42 / 50 The most constant and valuable trait to differentiate among maxillary first, second and third molars i____________? Comparative size of the cusp of carabelli Depth of central fossae Number of roots Relative position of the distolingual grooves 43 / 50 Transverse ridge is prominent on occlusal surface of which of the following decidous teeth ? Mandibular first molar Maxillary first molar Mandibular second molar Maxillary second molar 44 / 50 Which statement is correct about decidous dentition? The primary dentition is initiated at 10th?month in uterus Mandibular first molar erupts at one and half years of age Calcification of maxillary primary first premolar is completed at birth The crowns of primary dentition are more yellowish than permanent 45 / 50 The root completion of permanent teeth is achieved after __________ years o eruption? 4-Mar 1-1? 5-Apr 3-Feb 46 / 50 Resorption of root of primary incisors starts at_____________? 8 yrs 4 yrs 6 yrs 10 yrs 47 / 50 How many roots does a primary maxillary first molar have ___________? Four Two One Three 48 / 50 In normal occlusion , with which grooves / surface of the permanent mandibular first molar does the mesiobuccal cusp of the permanent maxillary first molar occlude______________? Mesiobuccal surface Distobuccal groove Mesial surface Transverse groove 49 / 50 If a mandibular canine has bifurcated roots, they are most commonly placed_______________? Mesiolingual and distolingual Mesiobuccal and distobuccal Facial and lingual Mesial and distal 50 / 50 What is the thickness of the layer of primsless enamel found in primary teeth_____________? 100?m 25 ?m 75?m 50?m Provide Your Information Your score is The average score is 0% LinkedIn Facebook Twitter 0% Restart quiz Send feedback Share on facebook Facebook Share on twitter Twitter Share on whatsapp WhatsApp PrevOral Anatomy Quiz 1 Oral Anatomy Quiz 3Next
