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