DENTISTRY / ORAL & MAXILLOFACIAL SYSTEM P1Question 1 Dentistry mainly focuses on the health of the:Eyes and earsOral cavity and facial structuresNeck and spineRespiratory systemQuestion 2 The medical term “oral cavity” refers to the:Nasal cavityThroatMouthEsophagusQuestion 3 How many permanent teeth does a normal adult have?28303234Question 4 Which tissue covers the crown of a tooth?DentinCementumEnamelPulpQuestion 5 The hardest substance in the human body is:DentinBoneEnamelCementumQuestion 6 The medical term “mandible” refers to the:Upper jawLower jawCheekboneNasal boneQuestion 7 Which bone forms the upper jaw?MandibleTemporal boneMaxillaZygomatic boneQuestion 8 The gingiva is also known as the:TonguePalateGum tissueBuccal mucosaQuestion 9 Which part of the tooth contains nerves and blood vessels?EnamelDentinCementumPulpQuestion 10 The prefix “odonto-” refers to:BoneToothJawGumQuestion 11 Which tooth type is primarily used for cutting food?MolarsPremolarsCaninesIncisorsQuestion 12 Which tooth type has a single pointed cusp for tearing?IncisorPremolarCanineMolarQuestion 13 Molars are mainly used for:CuttingTearingGrindingPiercingQuestion 14 The alveolar process is part of the:TongueMaxilla and mandiblePalate onlyZygomatic boneQuestion 15 Which structure anchors the tooth to the alveolar bone?Dental pulpPeriodontal ligamentEnamelDentinQuestion 16 The medical term “periodontium” refers to:Tooth enamel onlySupporting structures of the toothOral mucosaTongue musclesQuestion 17 Which tissue covers the root of the tooth?EnamelDentinCementumPulpQuestion 18 The hard palate forms the:Floor of the mouthRoof of the mouthBack of the throatNasal septumQuestion 19 Which structure separates the oral cavity from the nasal cavity?TongueSoft palateHard palateUvulaQuestion 20 The temporomandibular joint (TMJ) connects the:Maxilla and zygomatic boneMandible and temporal boneMandible and maxillaTemporal bone and sphenoid boneQuestion 21 Which muscle is primarily responsible for closing the jaw?BuccinatorMasseterOrbicularis orisPlatysmaQuestion 22 The buccal mucosa lines the:TongueCheeksPalateFloor of the mouthQuestion 23 Which salivary gland is the largest?Sublingual glandSubmandibular glandParotid glandMinor salivary glandsQuestion 24 Saliva mainly functions to:Destroy enamelAid digestion and lubricationHarden dentinAbsorb nutrientsQuestion 25 The medical term “malocclusion” refers to:Tooth decayGum inflammationImproper alignment of teethTooth lossQuestion 26 Which tooth surface faces the tongue?BuccalLabialLingualOcclusalQuestion 27 The occlusal surface is found on:Incisors onlyCanines onlyPremolars and molarsAll teethQuestion 28 Which structure contains taste buds?GingivaHard palateTongue papillaeBuccal mucosaQuestion 29 Which term refers to inflammation of the gums?PeriodontitisGingivitisStomatitisPulpitisQuestion 30 Why is enamel highly resistant to mechanical damage?It contains collagen fibersIt has high mineral (hydroxyapatite) contentIt is richly vascularizedIt regenerates easilyĐáp án chi tiết: Explanation: Enamel is composed mainly of hydroxyapatite crystals, making it extremely hard and resistant.Question 31 Why does dentin exposure cause tooth sensitivity?Dentin is softer than enamelDentin contains tubules connected to the pulpDentin lacks mineral contentDentin regenerates rapidlyĐáp án chi tiết: Explanation: Dentin tubules transmit stimuli to the pulp nerves, causing sensitivity.Question 32 Why is the periodontal ligament essential for tooth stability?It produces enamelIt allows slight movement and absorbs chewing forcesIt supplies salivaIt hardens the alveolar boneĐáp án chi tiết:Explanation: The ligament acts as a shock absorber during masticationQuestion 33 Why does inflammation of the pulp cause severe pain?The pulp contains enamelThe pulp is confined within a rigid chamberThe pulp lacks nervesThe pulp is poorly innervatedĐáp án chi tiết:Explanation: Increased pressure within the rigid pulp chamber compresses nerves.Question 34 Why is the mandible more prone to fracture than the maxilla?It is less mineralizedIt is more mobile and exposedIt lacks muscle attachmentIt is thinner than the maxillaĐáp án chi tiết:Explanation: The mandible is movable and absorbs more traumaQuestion 35 Why is TMJ dysfunction associated with jaw pain and clicking?TMJ has no cartilageThe articular disc may be displacedTMJ lacks synovial fluidTMJ is immobileĐáp án chi tiết:Explanation: Disc displacement interferes with smooth joint movementQuestion 36 Why does gingivitis usually not cause tooth loss if treated early?It affects bone directlyIt is limited to soft tissuesIt destroys enamelIt affects pulp firstĐáp án chi tiết:Explanation: Gingivitis is reversible and does not involve alveolar bone lossQuestion 37 Why is periodontitis more severe than gingivitis?It affects enamel onlyIt involves destruction of supporting boneIt is always painfulIt affects only one toothĐáp án chi tiết:Explanation: Bone loss leads to tooth mobility and eventual lossQuestion 38 Why is saliva important in preventing dental caries?It removes enamelIt neutralizes acids and contains antimicrobial factorsIt hardens dentinIt increases bacterial growthĐáp án chi tiết:Explanation: Saliva buffers acids and limits bacterial activityQuestion 39 Why does loss of posterior teeth affect mastication significantly?Incisors grind foodMolars provide the main grinding surfaceCanines perform chewingPremolars are unnecessaryĐáp án chi tiết:Explanation: Molars are essential for effective grinding of foodQuestion 40 The main purpose of learning oral and maxillofacial anatomical terminology is to:Memorize tooth namesReplace radiographic imagingAccurately describe structure, function, and pathologyAvoid clinical examinationĐáp án chi tiết: Explanation: Correct terminology supports diagnosis, treatment planning, and communication in dental practice.Nộp bàiKết quả:Tổng số câu: 0Số câu đúng: 0Số câu sai: 0Tỷ lệ đúng: Làm lạiĐáp án chi tiếtThi đề mớiBấm vào câu đã làmđể xem lại đáp án + lời giải chi tiết12345678910111213141516171819202122232425262728293031323334353637383940Học thử miễn phí "Tất cả những đề và đáp án có trong bộ đề thi, đã được MEDUC kiểm duyệt, nhưng không thể tránh sai sót, mọi sai sót xin báo về mail: meduc.vn@gmail.com, chân thành cám ơn các bạn"Chia sẻ: Còn lại0p:0s
