Endodontics R11 Endodontics SDLE MCQ | Part 2 Facebook X LinkedIn Messenger Messenger WhatsApp Telegram Print Report a question What’s wrong with this question? You cannot submit an empty report. Please add some details. 0% 1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465 Endodontics R11 Endodontics SDLE MCQ | Part 2 DentQuiz SDLE Mock Exam Instruction To mark a question and come back to it later, click the Bookmark icon. For the best experience, use a computer and switch to full screen button (from the top left corner). You can review and change your answers before clicking Next. Explanations will appear after each question to help you understand the correct answer. Your results will be shown right after you finish the exam. This is a fresh attempt — previous answers or bookmarks won’t be saved. The source of the questions and answers is recent Rafee’ Al-Maqam files. Special thanks to رفيع المقام. Answers are based on colleagues best efforts and may not be 100% accurate. If you believe an answer is incorrect, please click the Report button to let us know. Please fill in your details to continue NameEmailPhone Number 1 / 65 Category: Endodontics 1) What is used to track a sinus tract? Saline 15 K-file 20 Paper point 20 GP A gutta-percha (GP) point traces sinus tracts radiographically. 2 / 65 Category: Endodontics 2) What makes MTA radiopaque? Silica Calcium Zinc Bismuth Bismuth oxide in MTA provides radiopacity. 3 / 65 Category: Endodontics 3) A tooth has pinpoint exposure with no bleeding. What is the treatment? RCT Direct pulp capping Extraction Indirect pulp capping Direct pulp capping is suitable for non-bleeding exposures. 4 / 65 Category: Endodontics 4) What is the cross-section shape of a Flex-R file? Round Rectangular Square Triangular Flex-R files have a triangular cross-section for flexibility. 5 / 65 Category: Endodontics 5) What causes “sealer puffiness” in an endo-treated tooth with a lateral lesion? Lateral canal Overfilled canal Vertical root fracture Periapical abscess Sealer puffiness often indicates a lateral canal. 6 / 65 Category: Endodontics 6) What is the medicament for a weeping canal? Ledermix Saline Calcium hydroxide Formocresol Calcium hydroxide dries exudate and disinfects. 7 / 65 Category: Endodontics 7) Why might a canal disappear during RCT? Calcification Canal splitting File separation Perforation Canals may split into smaller, undetectable branches. 8 / 65 Category: Endodontics 8) What is the best management for a perforation? No treatment Delayed repair Extraction Immediate repair with MTA MTA provides an immediate seal for perforations. 9 / 65 Category: Endodontics 9) Which dentin component causes pain in exposed DT? Hydroxyapatite Collagen Fluid movement Odontoblastic processes Fluid shifts in dentinal tubules stimulate nerve endings. 10 / 65 Category: Endodontics 10) What causes discoloration in an endo-treated traumatized tooth? Bacteria in dentinal tubules Residual pulp tissue Blood components in tubules Debris in dentinal tubules Blood pigments from trauma seep into dentinal tubules, causing discoloration. 11 / 65 Category: Endodontics 11) An 8-year-old patient has severe pain in tooth #6. What is the treatment? Apexogenesis Pulpotomy Extraction RCT Apexogenesis preserves pulp vitality in immature teeth. 12 / 65 Category: Endodontics 12) During RCT, uncontrolled bleeding and lost WL indicate? Calcified canal Instrument separation Cracked root Perforation Sudden bleeding and WL loss suggest perforation. 13 / 65 Category: Endodontics 13) A patient presents with severe pain in tooth #46, sensitive to cold but negative to percussion. What is the emergency treatment? Extraction Remove caries + filling Pulpotomy Direct pulp capping Pulpotomy is the emergency treatment for irreversible pulpitis. 14 / 65 Category: Endodontics 14) If the master file doesn’t reach the full working length, what should you do? Use irrigation with saline Force the file into the canal Use a scaler Take a new X-ray Irrigation helps remove debris blocking the canal. 15 / 65 Category: Endodontics 15) Which type of canal is most difficult to treat in endodontics? Calcified Fused roots Short, straight, wide Long, curved, narrow Long, curved, narrow canals are technically challenging. 16 / 65 Category: Endodontics 16) What is the cause of a pinkish tooth? Caries Internal resorption Enamel hypoplasia External resorption Internal resorption leads to vascular changes causing pink discoloration. 17 / 65 Category: Endodontics 17) A patient returns with pain 2 days after RCT. No intervention is needed. What is the next step? Combine ibuprofen with acetaminophen Prescribe antibiotics Replace ibuprofen with acetaminophen Increase ibuprofen dose Combination therapy is more effective for pain control. 18 / 65 Category: Endodontics 18) Which image shows internal resorption? [Image C] [Image D] [Image A] [Image B] Internal resorption appears as irregular radiolucency within the tooth. 19 / 65 Category: Endodontics 19) Which material promotes periapical healing? Zinc phosphate Eugenol Corticosteroids Calcium hydroxide Calcium hydroxide aids in healing due to its biocompatibility. 20 / 65 Category: Endodontics 20) Which tooth consistently has a single canal? Mandibular canine Maxillary central Maxillary canine Mandibular premolar Maxillary central incisors typically have one canal. 21 / 65 Category: Endodontics 21) A pediatric patient with trauma and pinpoint pulp exposure for 3 days. What is the treatment? RCT Direct pulp capping with MTA Pulpotomy Indirect pulp capping Pulpotomy is preferred for traumatized primary teeth. 22 / 65 Category: Endodontics 22) How many roots does an upper second molar usually have? 3 2 1 4 Maxillary second molars commonly have three roots. 23 / 65 Category: Endodontics 23) Which tooth most commonly has root fractures? Maxillary 2nd premolar Mandibular 1st molar Mandibular 2nd molar Maxillary 1st premolar Maxillary 1st premolars are prone to root fractures due to anatomy. 24 / 65 Category: Endodontics 24) What is a potential outcome of pulpotomy with ferric sulfate? Coronal resorption Internal resorption Apical resorption External resorption Ferric sulfate may trigger internal resorption. 25 / 65 Category: Endodontics 25) Non-vital intracanal bleaching most commonly causes which type of resorption? Periapical Intraradicular Internal External cervical External cervical resorption is a known complication. 26 / 65 Category: Endodontics 26) What is the primary indication for apexification? Open apex in immature teeth Internal resorption Periapical abscess Root fracture Apexification is used to induce apical closure in immature teeth. 27 / 65 Category: Endodontics 27) What is the best sterilization method for gutta-percha? 5.25% NaOCl Full-concentration NaOCl CHX Glutaraldehyde 5.25% NaOCl effectively sterilizes gutta-percha. 28 / 65 Category: Endodontics 28) A patient has transient sensitivity to hot/cold. Next step? Cold test Heat test EPT Percussion Percussion helps rule out periapical involvement. 29 / 65 Category: Endodontics 29) An endo-treated tooth (#37) causes pain. Likely cause? Cracked root Missing MB2 Overfilling Periapical cyst Missed MB2 canals are a common cause of persistent pain. 30 / 65 Category: Endodontics 30) In the SLOB technique, where is the lingual canal located? Distal Lingual Buccal Mesial SLOB rule: Same Lingual, Opposite Buccal. 31 / 65 Category: Endodontics 31) Why remove the access filling temporarily? To avoid overfilling To reduce cost To reassess canal anatomy To check hemostasis Temporary removal ensures proper hemostasis before final obturation. 32 / 65 Category: Endodontics 32) A patient has pain in tooth #46 and an impacted adjacent tooth. What is the treatment? Extract the impacted tooth Monitor Treat tooth #46 Inform about the impacted tooth The pain is likely from #46, which requires treatment. 33 / 65 Category: Endodontics 33) A crowned tooth (#46) has normal probing but percussion pain. What should you do? Extraction Take a panorama X-ray Remove the crown to check for cracks Use a comp X-ray Cracks under crowns are a common cause of pain. 34 / 65 Category: Endodontics 34) When should MTA be placed after a perforation? Immediately After cleaning and shaping After symptoms resolve After 1 week Immediate placement prevents complications. 35 / 65 Category: Endodontics 35) What is a disadvantage of gutta-percha? Difficult to remove Poor sealing ability Shrinks over time Lack of rigidity Gutta-percha lacks rigidity, making it challenging in some cases. 36 / 65 Category: Endodontics 36) What is the best diagnostic method for detecting a crack in a tooth? Transillumination Percussion test Biting test X-ray Transillumination highlights cracks effectively. 37 / 65 Category: Endodontics 37) How is internal resorption managed? Monitoring RCT Apexification Extraction RCT stops progressive internal resorption. 38 / 65 Category: Endodontics 38) A patient has sensitivity to cold and a crack on the mesial surface. Pain stops upon stimulus removal. What is the pulp condition? Necrotic pulp Irreversible pulpitis Reversible pulpitis Normal pulp Reversible pulpitis is characterized by transient pain. 39 / 65 Category: Endodontics 39) Which of the following is NOT a feature of calcium hydroxide sealer? Radiopaque Induces hard tissue formation Antibacterial Soluble Calcium hydroxide sealers are known to be soluble over time. 40 / 65 Category: Endodontics 40) Which nerve fiber is responsible for sharp pain? Unmyelinated C fibers Myelinated A-delta fibers A-beta fibers B fibers A-delta fibers transmit sharp, localized pain. 41 / 65 Category: Endodontics 41) A patient complains of dark tooth after RCT. What is the most probable cause? Leaking restoration Debris in tubules Blood pigments in tubules Bacterial infection Blood pigments in tubules are common after trauma (if mentioned in the question). 42 / 65 Category: Endodontics 42) What does EDTA stand for? Ethanoldiamine tetraacetic acid 12% Ethanoldiamine tetraacetic acid 17% Ethylenediamine tetraacetic acid 17% Ethylenediamine tetraacetic acid 12% EDTA is a 17% chelating agent used in canal irrigation. 43 / 65 Category: Endodontics 43) What measures pulp oxygen levels? EPT Pulp oximeter Cold test Laser Doppler Pulp oximetry assesses pulp vitality via oxygen saturation. 44 / 65 Category: Endodontics 44) A calcified canal is encountered during RCT. What should you do? Refer to an endodontist Continue the procedure Use ultrasonic tips Take a CBCT Calcified canals often require specialized expertise. 45 / 65 Category: Endodontics 45) Where is MB2 located relative to MB1? Distal Palatal Mesial Buccal MB2 is typically palatal to MB1 in maxillary molars. 46 / 65 Category: Endodontics 46) After cleaning an acute abscess, drainage persists. Next step? Extraction Immediate obturation Antibiotics Intracanal medicament Calcium hydroxide medicament controls exudate. 47 / 65 Category: Endodontics 47) How far should the spreader penetrate in lateral compaction? Less than 1-2 mm To the apex Half the canal length 3-4 mm Spreader should stay 1-2 mm short to avoid apical pressure. 48 / 65 Category: Endodontics 48) A patient has pain post-RCT with no intervention needed. Treatment? NSAID Antibiotic Muscle relaxant Steroid NSAIDs manage post-operative inflammation. 49 / 65 Category: Endodontics 49) Which material is most toxic? Ledermix Ferric sulfate CAH MTA Ferric sulfate is cytotoxic to tissues. 50 / 65 Category: Endodontics 50) How can a doctor differentiate between tooth #11 and #21 after avulsion? Distal surface is rounded Root curvature is different Crown length is longer Mesial slope is shorter The distal surface of tooth #21 is typically more rounded. 51 / 65 Category: Endodontics 51) A patient has fractures in enamel, dentin, and exposed pulp. What is the treatment? Extraction Direct pulp cap Indirect pulp cap Pulpotomy Direct pulp capping is indicated for exposed vital pulp. 52 / 65 Category: Endodontics 52) A patient has broken instruments in the apical third but is asymptomatic after 3 months. What is the management? Non-surgical retreatment Follow-up Extraction Surgical intervention Asymptomatic cases with broken instruments can be monitored. 53 / 65 Category: Endodontics 53) What is the recommended irrigation solution for an open apex? EDTA and NaOCl H2O2 and CHX CHX and NaOCl H2O2 and NaOCl EDTA and NaOCl are used for their combined ability to clean and disinfect the canal. 54 / 65 Category: Endodontics 54) Which root rarely has two canals? Palatal root of upper 6 Distobuccal root of upper 6 Mesial root of lower 6 Distal root of lower 6 The distobuccal root of maxillary molars seldom has two canals. 55 / 65 Category: Endodontics 55) A patient has pain in crowned teeth (#26, 27) with perfect RCT and crown. Next step? Remove crowns Percussion test Cold test CBCT CBCT detects hidden cracks or fractures. 56 / 65 Category: Endodontics 56) Which dental material has a caustic effect on tissues? Formocresol Calcium hydroxide MTA Zinc oxide Formocresol is known for its caustic properties. 57 / 65 Category: Endodontics 57) What causes an orange-brown color when mixing solutions? CHX and H2O2 NaOCl and saline CHX and NaOCl H2O2 and EDTA CHX and NaOCl react to form an orange-brown precipitate. 58 / 65 Category: Endodontics 58) What is the primary use of a nerve broach? Clean and shape canals Measure canal length Remove pulp tissue Place medicaments Nerve broaches extirpate pulp from canals. 59 / 65 Category: Endodontics 59) A patient has tenderness/mobility after filling fell out post-RCT (no abscess). Treatment? Extraction Monitoring Periodontal therapy only Non-surgical retreatment + perio Retreatment addresses potential missed canals before perio therapy. 60 / 65 Category: Endodontics 60) What type of sealer is AH26? Zinc oxide Calcium hydroxide Glass ionomer Resin AH26 is a resin-based sealer. 61 / 65 Category: Endodontics 61) A patient has severe nocturnal pain, no cold response, and a sinus tract. Diagnosis? Acute abscess Reversible pulpitis Chronic abscess Irreversible pulpitis Chronic abscess presents with sinus tract and no acute symptoms. 62 / 65 Category: Endodontics 62) A child with trauma has a tooth with a pink spot after 3 days. Treatment? Pulpectomy Apexification Pulpotomy Monitoring Pink spots often indicate internal resorption requiring pulpectomy. 63 / 65 Category: Endodontics 63) How to confirm vertical root fracture? Exploratory surgery Transillumination CBCT Percussion test Exploratory surgery provides definitive diagnosis. 64 / 65 Category: Endodontics 64) What is the purpose of a lentulo spiral? To dry canals To remove pulp To place sealer in tubules To enlarge canals Lentulo spirals deliver sealer into dentinal tubules. 65 / 65 Category: Endodontics 65) What causes a tooth to turn yellow after trauma? Necrosis Pulp obliteration Internal resorption External resorption Trauma can lead to pulp obliteration and discoloration. Your score is The average score is 71% Facebook Twitter 0% Restart quiz Please rate this exam and leave a comment with any notes or suggestions. 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