0% 0 Oral Anatomy Quiz 5 1 / 50 Maxillary facial and mandibular lingual cusps require sufficient occclusal length and horizontal overlap for_____________? Chewing efficiency Centric stability Esthetics Soft tissue protection 2 / 50 The primary teeth that present the most outstanding morpholgic deviations from permanent teeth are______________? Central incisors Canines Mandibular first molar Mandibular second molar 3 / 50 The side towards which mandible moves is called the_____________? Tooth contact side Balancing side Working side Non- working side 4 / 50 The direction of enamel rods in decidous teeth is_____________? Same as permanent teeth None of the above Inclined in an apical direction in the cervical third of crown Inclined in an occlusal direction in the cervical third of crown 5 / 50 In which of the following areas is the alveolar process the thinnest_____________? Lingual to the maxillary central incisors Lingual to the maxillary canines Buccal to the mandibular central incisors Lingual to the mandibular first molar 6 / 50 The maxillary tooth exhibiting the greatest variation in root alignment is______________? Central incisor Third molar First premolar Second molar 7 / 50 Permanent Mandibular central incisor develops from_____________? 4 lobes 3 lobes 5 lobes 1 lobe 8 / 50 Steepest cusp is seen in_______________? Mandibular 1st molar Maxillary 1st molar Mandibular 2nd molar Maxillary 1st premolar 9 / 50 All embrasure spaces are reflection of the______________? Form of the teeth involved Eruption sequence involved Size of the teeth involved None of the above 10 / 50 Conjoint tendon is formed by _________? External and internal oblique External oblique and transversus abdominis Internal oblique Internal oblique and transversus abdominis 11 / 50 Which of the premolars is usually the smallest____________? Mandibular first Maxillary first Maxillary second Mandibular second 12 / 50 In primates; a tooth with single conical cusp and single root is seen in________________? Haplodont Thecodont Acrodont Heterodont 13 / 50 The shape of the occlusal surface of the permanent maxillary first molar is___________? Trapezoidal Triangular Oval Rhomboidal 14 / 50 In an ideal occlustion buccal cusps of maxillary teeth, occlude with______________? Grooves and embrasures Occlusal pits and fissures of mandibular teeth Lingual cusps of mandibular teeth Fossa and rdges 15 / 50 All are true about calciotraumatic line, except______________? Due to caries It remains after caries is removed Because of odontoblastic migration from cell rich zone Due to death of odontoblastic layer 16 / 50 The number of point angles in a permanent mandibular first molar is_____________? 4 10 6 8 17 / 50 The teeth that are retained for the longest period of time are__________________? Maxillary canines Mandibular incisors B & D Maxillary incisors 18 / 50 Which of the following is dental formula of a 9 years old child_____________? 6 EDC21/ 6EDC21 76EDC21/ 7EDC21 EDC21/EDC21 6EDCBA/ 6EDC21 19 / 50 Greater crown bulk distal to the faciolingual bisecting plane of a tooth is most typical of the mandibular_______________? Lateral incisor Canine Central incisor Second premolar (AIPG ? 97, Man-95) 20 / 50 Which of the following decidous molars bears the greatest resemblance to a premolar _____________? Mandibular first Mandibular second Maxillary first Maxillary second 21 / 50 Using occlusal morphology as guide , the Mandibular third molar is most similar to______________? Maxillary permanent first molar Mandibular permanent second molar Mandibular permanent first molar Mandibular decidous second molar 22 / 50 Which is the predominant factor in the formation of the alveolar process_____________? Lengthening of the condyle Eruption of teeth Overall growth of the bodies of the maxilla and the mandible Normal process of growth 23 / 50 A pronounced developmental groove is usually present on the mesial marginal ridge of a permanent________________? Mandibular second premolar Maxillary second molar Maxillary first premolar Mandibular third molar 24 / 50 A maxillary right canine may be distinguished from a maxillary left canine because ____________? The root curves to mesial in the apical 1/3rd Lingually the cervical line slopes mesially The distal half of canine shows more convexity than the mesical half Facially the cusp tip is placed distal to Bisecting line 25 / 50 The total number of cingula in each dentition is_______________? 24 6 12 32 26 / 50 Ratio of mesiodistal width to height of crown of maxillary canine is______________? 8:10 7:10 6:10 6:08 27 / 50 The time taken for primary tooth root completion after eruption_____________? 1 month 2 years 1 years 3 years 28 / 50 In how many years, the central incisors erupt as permanent teeth ______________? 10-12 years 8-9 years 17-25 years 6-7 years 29 / 50 How many pulpal horns are there in the mandibular second primary molar ? 6 3 4 5 30 / 50 Which of the following moment are performed by a non- working condyle ? Down wards Back wards and medial Down wards forwards and medial Straightward Down wards forwards and lateral 31 / 50 The premolar with the occlusal groove pattern that may simulate the letter ?Y? is________________? Mandibular second Mandibular first Maxillary first Maxillary second 32 / 50 Which of the portions of the intra articular disc is the thinnest ? retrodiscal Anterior Posterior Intermediate 33 / 50 Which line angle area is most acute when a permanent maxillary second molar is viewed occlusally ? Distolingual Mesiofacial Mesiolingual Distofacial 34 / 50 Mesiodistal width is more than cervico- incisal length of crown in_____________? Decidous maxillary central incisors Permanent mandibular lateral incisors Permanent maxillary canines Permanent central incisors 35 / 50 First permanent molars begin to calcify at ______________? At birth 6 months of intra utrerine life About 1 year after birth Before decidous incisors 36 / 50 Which of the following has the maximum faciolingual diameter of the crown__________? Decidous mandibular 1st molar Decidous maxillary 2nd molar Decidous mandibular 2nd molar Decidous maxillary 1st molar 37 / 50 If a permanent first molar is lost, the permanent second molar drifts to the______________? Distal side Buccal side Lingual side Mesial side 38 / 50 Growth of all permanent teeth except last molars is completed by___________? 12 years 6 years 8 years 17 years 39 / 50 The incisal edges and the incisal thirds of facial surfaces of mandibular incisors and canines generally oppose lingual surfaces of maxillary incisor and canines _____________? Immediately incisal to cingulam At the linguo cervical ridges Within the incisor thirds At the junction of middle and cervical thirds 40 / 50 Among the difference between teeth in the decidous and the permanent dentition is that_____________? Crowns of decidous incisors are wider mesiodistally than their cervico incisal lengths Buccal surfaces of the permanent molars are flatter Cervical ridges are more pronounced in permanent molars Root trunks of decidous teeth are larger compared with their overall root lengths 41 / 50 Mesial contact area of the permanent canine is at the______________? None of the above Middle third Junction of the incisal and middle thirds Junction of the middle and cedrvical thirds 42 / 50 Cervical bulge. True is____________? Enamel rods at cervical region directed occlusally Is characteristic of decidous teeth Results in constriction at cervical region All of the above 43 / 50 In the mandibular arch, in which tooth maximum lingual inclination is present_______________? 3rd molar Lateral incisors 1st premolar Canine 44 / 50 The correct dentition in a 9- years old child is_____________? 12 CDE6 12C456 123DE6 123456 45 / 50 The number of line angles a permanent maxillary central incisor is_____________? Two Eight Six Four 46 / 50 The largest mesiodistal diameter in primary dentition is____________? Mandibular 1st molar None of the above Maxillary 2nd molar Mandibular2nd molar 47 / 50 Beginning of eruption of permanent tooth starts_____________? when root formation starts When half of the root is still to be formed When apical third root is still to be formed After completion of root 48 / 50 Largest tooth in the mandibular arch is_________________? Decidous first molar Third molar Canine Permanent first molar 49 / 50 At birth the following teeth are calcifying____________? Primary canines & second molars Primary incisors & first molar Permanent 3rd molar Permanent canines 50 / 50 What is the functional form of anterior teeth from the mesial or the distal aspect ? Rhomboidal Trapezoidal Elliptical Wedge- shaped 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 4
