Periodontics R11 Periodontics SDLE MCQ 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% 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105 Periodontics R11 Periodontics SDLE MCQ 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 / 105 Category: Periodontics 1) What is the new term for “biological width”? Dentogingival complex Supracrustal tissue attachment Periodontal ligament zone Alveolar crest membrane “Supracrustal tissue attachment” is the updated terminology. 2 / 105 Category: Periodontics 2) Tooth with recent amalgam and Class 2 mobility indicates? Root fracture Primary occlusal trauma Secondary occlusal trauma Periodontal abscess Secondary trauma occurs with compromised periodontium. 3 / 105 Category: Periodontics 3) What is the yellowish material on teeth that can’t be rinsed off? Calculus Plaque Stains Food debris Plaque is the initial biofilm that adheres firmly to teeth. 4 / 105 Category: Periodontics 4) Plastic curettes are used for? Implant surfaces Enamel Dentin hypersensitivity Ceramic crowns Plastic instruments prevent implant surface damage. 5 / 105 Category: Periodontics 5) Bacteria associated with pregnancy gingivitis? A. actinomycetemcomitans P. intermedia S. mutans T. denticola P. intermedia thrives in elevated progesterone levels. 6 / 105 Category: Periodontics 6) Best flap for lesion distal to lower second molar? Intrasulcular Semilunar Envelope Pedicle Intrasulcular flaps provide optimal access to posterior lesions. 7 / 105 Category: Periodontics 7) Key diagnostic difference between periapical/periodontal abscess? Pain characteristics Radiographic appearance Swelling location Tooth vitality Vitality testing is primary determinant (vital=periodontal, non-vital=periapical). 8 / 105 Category: Periodontics 8) How many days until dental calculus forms? 10-14 days 1-2 days 21-28 days 3-5 days Calculus typically mineralizes from plaque in 10-14 days. 9 / 105 Category: Periodontics 9) Effect of mesially tilted lower third molar extraction? Mesial bone loss on #7 Distal wall defect on #7 Complete bone regeneration No significant effect Third molar extraction often leaves distal defects on adjacent teeth. 10 / 105 Category: Periodontics 10) Management of gingival recession with CEJ caries? Monitoring Combined procedure Gingival graft first Restoration first Gingival graft should precede restoration to ensure proper tissue coverage. 11 / 105 Category: Periodontics 11) Purpose of resective osteotomy after perio treatment? Regeneration Pocket reduction Recontouring Furcation plasty Recontouring modifies physiological bone architecture. 12 / 105 Category: Periodontics 12) Flap choice for 3-wall defect between #44-45? Pedicle flap Semilunar flap Envelope flap Papilla preservation flap Preserves interdental papilla for optimal healing. 13 / 105 Category: Periodontics 13) What is the color coding sequence of UNC-15 probe? Every 5mm (5,10,15) Every 1mm Alternating colors Every 3mm UNC-15 probes mark every 5mm for easy depth assessment. 14 / 105 Category: Periodontics 14) Best instrument for subgingival calculus? Ultrasonic scaler Sickle scaler Gracey curette Piezoscaler Gracey curettes access subgingival areas effectively. 15 / 105 Category: Periodontics 15) What is an indication for resective osseous surgery? Gingival recession Three-wall defect Furcation involvement One-wall defect Three-wall defects respond well to resective osseous surgery. 16 / 105 Category: Periodontics 16) What is the main cell type in established gingivitis? Neutrophil Lymphocyte Macrophage Plasma cell Plasma cells dominate chronic inflammation in gingivitis. 17 / 105 Category: Periodontics 17) Crown lengthening for tooth with 2mm KT and 3mm bone? Apical flap + bone removal No treatment needed Gingivectomy alone Orthodontic extrusion Requires osseous reduction to achieve biological width. 18 / 105 Category: Periodontics 18) Management of persistent isolated pocket? Systemic antibiotics Observation Surgical resection Local antibiotic delivery Local antibiotics target refractory sites effectively. 19 / 105 Category: Periodontics 19) Gingival changes associated with aging? Reduced vascularity Decreased keratinized tissue Thinner epithelium Increased attached gingiva Attached gingiva increases due to apical migration of junctional epithelium. 20 / 105 Category: Periodontics 20) Bacteria causing horizontal bone loss in 60-year-old? Porphyromonas Streptococci Fusobacterium Actinomyces Actinomyces species are linked to chronic horizontal bone loss. 21 / 105 Category: Periodontics 21) What is the normal probing depth of healthy gingiva? 3-5 mm 1-3 mm 0.5-2 mm 2-4 mm 1-3 mm is the physiologic sulcus depth without pathology. 22 / 105 Category: Periodontics 22) Treatment for short anterior teeth with normal periodontium? Esthetic crown lengthening Composite bonding Gingival grafts No treatment needed Crown lengthening improves crown-to-root ratio for esthetics. 23 / 105 Category: Periodontics 23) Which radiograph detects biological width violation? Panoramic Occlusal Vertical bitewing Periapical Vertical bitewings show alveolar crest and crown-root relationships clearly. 24 / 105 Category: Periodontics 24) Example of digital periodontal probe? Florida probe Pro-Depth All of above PerioTemp Florida probe is the most widely used digital probing system. 25 / 105 Category: Periodontics 25) Why does #7 show Class II furcation vs #6’s Class I? #7 has short roots #7 has divergent roots #6 has convergent roots #6 has long roots Root length directly affects furcation vulnerability. 26 / 105 Category: Periodontics 26) What is the treatment for Stillman’s cleft? Gingivectomy Laser therapy Free gingival graft Connective tissue graft Connective tissue grafts cover recessions like Stillman’s cleft. 27 / 105 Category: Periodontics 27) 60.58-year-old man is complaining from tooth mobility. The clinical examination revealed probing depths that range from 4 to 9 mm, clinical attachment loss of >5 mm and grade II to III mobility in most 23 of his teeth. The patient also smoked cigarettes 2 packs a day. Which of the following is the most likely diagnosis? Generalized Stage III Grade B periodontitis Generalized Stage III Grade C periodontitis Localized Stage III Grade A periodontitis Localized Stage III Grade C periodontitis Smoking + severe attachment loss indicates Grade C. 28 / 105 Category: Periodontics 28) What is the probe angulation during measurement? 20 degrees 10 degrees 45 degrees 30 degrees 10 degrees ensures accurate pocket depth reading. 29 / 105 Category: Periodontics 29) Which tooth is most difficult to scale? Upper 4 Distobuccal root of upper 7 Lower molar Upper canine Upper 4’s root anatomy makes scaling challenging. 30 / 105 Category: Periodontics 30) Treatment for localized recession without interproximal loss? Root coverage surgery Pink porcelain crown Night guard therapy Composite restoration Surgical root coverage provides predictable results for Miller Class I recession. 31 / 105 Category: Periodontics 31) Cause of gingival enlargement after eating fish? Periodontal abscess Food impaction Allergic reaction Gingival abscess Fish bones may cause traumatic gingival abscesses. 32 / 105 Category: Periodontics 32) Diagnosis for post-scaling abscess? Pericoronitis Gingival abscess Periodontal abscess Herpetic lesion Periodontal abscesses commonly occur after scaling. 33 / 105 Category: Periodontics 33) Which cells repair pulp tissue after injury? Odontoblasts Undifferentiated mesenchymal cells Fibroblasts Cementoblasts Undifferentiated mesenchymal cells differentiate to regenerate pulp. 34 / 105 Category: Periodontics 34) Diagnosis for pain after eating popcorn? Gingival abscess Food impaction ANUG Periodontal abscess Popcorn husks commonly cause traumatic gingival abscesses. 35 / 105 Category: Periodontics 35) Treatment for Class I furcation? SRP Flap surgery GTR Extraction Scaling and root planing (SRP) is sufficient for Class I furcation. 36 / 105 Category: Periodontics 36) When does dental plaque begin to form? 6 hours 12 hours 48 hours 24 hours Plaque formation starts within 12 hours after cleaning. 37 / 105 Category: Periodontics 37) Why do dentists advise patients to brush dentures daily? To prevent cross infections To avoid inflammation To remove plaque To avoid bad smell Daily brushing prevents bacterial buildup causing bad odor. 38 / 105 Category: Periodontics 38) Drug causing gingival hyperplasia? Antibiotics Anticoagulants Calcium channel blockers Beta blockers Nifedipine/amlodipine frequently induce gingival overgrowth. 39 / 105 Category: Periodontics 39) Bone architecture with papilla loss exceeding other areas? Inverted architecture Reversed architecture Flat architecture Normal architecture Reversed architecture shows greater interdental than radicular bone loss. 40 / 105 Category: Periodontics 40) Disadvantage of Florida probe? High cost Limited accessibility All of above Requires calibration Combines all common limitations of electronic probes. 41 / 105 Category: Periodontics 41) Piezoscaler working motion? Rotary Vertical Elliptical Back-and-forth Piezoelectric scalers use linear back-and-forth motion. 42 / 105 Category: Periodontics 42) Gingival enlargement in renal failure patients? Diuretics NSAIDs Calcium channel blockers Beta blockers CCBs cause fibrous gingival overgrowth. 43 / 105 Category: Periodontics 43) When does initial gingivitis begin? 14-21 days 1-2 days 2-4 days 4-7 days Initial gingivitis signs appear within 2-4 days of plaque accumulation. 44 / 105 Category: Periodontics 44) Minimal bone-to-restoration margin distance? 3mm 2mm 5mm 4mm 3mm maintains biological width (1mm epithelium + 1mm CT + 1mm sulcus). 45 / 105 Category: Periodontics 45) What treatment is needed after orthodontic removal? Restoration RCT Crown SRP Scaling and root planing (SRP) is essential after orthodontic treatment. 46 / 105 Category: Periodontics 46) Gingival enlargement covering 3/4 crown is class? Class 3 Class 2 Class 4 Class 1 Class 3 covers >1/2 but not entire crown (Seymour classification). 47 / 105 Category: Periodontics 47) Causative bacteria in aggressive periodontitis with family history? F. nucleatum T. forsythia A. actinomycetemcomitans P. gingivalis A.a is strongly associated with familial aggressive periodontitis. 48 / 105 Category: Periodontics 48) Treatment for excessive gingival display with short clinical crowns? Porcelain veneers Orthodontic extrusion Gingivectomy Crown lengthening Gingivectomy corrects excessive gingival display when no bone reduction needed. 49 / 105 Category: Periodontics 49) Instrument modification for deep posterior pockets? Longer terminal shank Smaller handle Curved tip Thicker blade Extended shank improves access to posterior areas. 50 / 105 Category: Periodontics 50) What is the universal curette’s working angle? 45 degrees 60 degrees 90 degrees 120 degrees 90 degrees is the standard working angle for universal curettes. 51 / 105 Category: Periodontics 51) What angle should a curette be inserted for subgingival scaling? 20 degrees 0 degrees 30 degrees 10 degrees 0 degrees allows smooth subgingival insertion. 52 / 105 Category: Periodontics 52) How is recession type II treated? Flap surgery Guided tissue regeneration Crown lengthening Gingival graft Gingival/connective tissue grafts are gold standard for type II recession. 53 / 105 Category: Periodontics 53) Treatment for Class II furcation? Tunnel preparation Extraction SRP GTR Guided Tissue Regeneration (GTR) is indicated for Class II furcations. 54 / 105 Category: Periodontics 54) What is the diameter of a periodontal probe tip? 0.3 mm 2 mm 1 mm 0.5 mm Standard periodontal probes have 0.5mm tips for accurate measurements. 55 / 105 Category: Periodontics 55) When does CAL equal PD? With gingival hyperplasia With no recession With pocket formation With bone loss CAL = PD when no recession exists (e.g., sulcus depth = attachment level). 56 / 105 Category: Periodontics 56) Boundary between attached/unattached gingiva? Alveolar mucosa Free gingival groove Mucogingival junction Interdental papilla Free gingival groove marks the apical border of unattached gingiva. 57 / 105 Category: Periodontics 57) How long to wait after crown lengthening for crown fabrication? 5-6 months 7-8 months 1-2 months 3-4 months 3-4 months allows for gingival stability and tissue maturation. 58 / 105 Category: Periodontics 58) Which probe has 0.5mm markings at the tip? UNC probe WHO probe Nabers probe Williams probe WHO probes have 0.5mm increments at the tip. 59 / 105 Category: Periodontics 59) Which scaler has a unique angulation? Sickle Gracey Bone file Universal Gracey curettes have area-specific angled blades. 60 / 105 Category: Periodontics 60) Interpretation of 40% plaque and 20% BOP scores? Excellent oral hygiene Attempts but ineffective Knows technique but inconsistent Lacks knowledge/motivation High plaque score indicates fundamental behavioral/oral hygiene deficiencies. 61 / 105 Category: Periodontics 61) Most common periodontal disease sign? Bleeding on probing Tooth mobility Recession Suppuration BOP is the earliest detectable clinical sign. 62 / 105 Category: Periodontics 62) Treatment for diabetic patient with swelling and pus at #46? Extraction Antibiotics SRP Incision and drainage Scaling and root planing is first-line treatment for periodontal abscesses. 63 / 105 Category: Periodontics 63) Main concern with excessive alcohol mouthwash use? Enamel demineralization Altered taste perception Tooth staining Oral mucosal dryness Alcohol causes xerostomia and disrupts oral microbiome balance. 64 / 105 Category: Periodontics 64) Treatment for periodontal abscess in diabetic patient? Both Observation Systemic antibiotics Local debridement Diabetics require both local treatment and possible antibiotics. 65 / 105 Category: Periodontics 65) Best radiograph for advanced periodontitis? Vertical bitewing Periapical Occlusal Panoramic Vertical bitewings show bone loss patterns best. 66 / 105 Category: Periodontics 66) Interpretation of furcation differences between #16 and #17? #17 has longer roots #16 has fused roots #16 has divergent roots #17 has shorter root trunk Shorter root trunks lead to more advanced furcation involvement. 67 / 105 Category: Periodontics 67) Bone regeneration technique shown in CBCT? Block graft Ridge preservation Socket grafting GBR Block grafts are used for significant vertical/horizontal defects. 68 / 105 Category: Periodontics 68) Cause of painful implant with exposed metal collar? Poor oral hygiene Loss of epithelial attachment Prosthetic misfit Occlusal overload Exposed metal indicates breakdown of soft tissue seal around implant. 69 / 105 Category: Periodontics 69) Smoking’s effect on bone? No significant effect Increases density Causes osteosclerosis Accelerates resorption Smoking impairs osteoblast function and angiogenesis. 70 / 105 Category: Periodontics 70) Cause of painful implant (no mobility/bone loss)? Peri-implant mucositis Failed osseointegration Nerve impingement Prosthetic overload Mucositis causes pain without bone loss in early stages. 71 / 105 Category: Periodontics 71) Which tooth is most challenging for periodontal treatment? Upper canine Lower central incisor Upper first premolar Lower second molar Upper first premolar’s mesial root concavity complicates treatment. 72 / 105 Category: Periodontics 72) How to detect subgingival calculus? Disclosing agent Radiographs Visual inspection Tactile perception Tactile perception with a probe is most reliable for subgingival calculus. 73 / 105 Category: Periodontics 73) Movement pattern of magnetic scaler tip? Round Elliptical Zigzag Linear Elliptical motion provides optimal calculus removal. 74 / 105 Category: Periodontics 74) If gingival margin is 2mm from CEJ and PD is 6mm, what is CAL? 2mm 8mm 6mm 4mm CAL = (Gingival margin to CEJ) + PD = 2 + 6 = 8mm. 75 / 105 Category: Periodontics 75) Why might periodontitis recur in a heavy smoker? Poor oral hygiene Incomplete calculus removal Smoking All of the above Smoking impairs healing and masks bleeding, complicating maintenance. 76 / 105 Category: Periodontics 76) Which probe has 3 sections? WHO probe UNC probe Williams probe Marquis probe Marquis probe features 3 sections (3-6-9mm markings). 77 / 105 Category: Periodontics 77) Minimal distance from restoration to bone crest in furcation areas? 3-4mm 5-6mm 4-5mm 2-3mm 5-6mm prevents biological width violation in complex furcation anatomy. 78 / 105 Category: Periodontics 78) Cause of bleeding post-laser gingivectomy? Spontaneous bleeding Plaque accumulation Laser side effect Allergic reaction Plaque-induced inflammation overrides laser benefits. 79 / 105 Category: Periodontics 79) Attached gingiva boundaries? Interdental col to frenum Free groove to mucogingival line CEJ to free margin Sulcus base to bone crest Defined coronally by free groove and apically by mucogingival junction. 80 / 105 Category: Periodontics 80) Treatment for Class I and II furcation? GTR Combination therapy Observation SRP Combination therapy works best for mixed furcation classes. 81 / 105 Category: Periodontics 81) What is a disadvantage of LASER use on soft tissues? All of the above Uncontrolled depth Delayed healing Excessive bleeding Lasers can cause delayed healing, bleeding, and unpredictable tissue effects. 82 / 105 Category: Periodontics 82) What does this image show? Horizontal bone loss 3-wall defect Dehiscence Fenestration Clearly demonstrates intact bony walls around defect. 83 / 105 Category: Periodontics 83) Management of gingival abscess? Incision and drainage Both Antibiotics Observation Gingival abscesses require drainage and possible antibiotics. 84 / 105 Category: Periodontics 84) Cause of swelling after scaling in diabetic patient? Allergic reaction Trauma Infection Unremoved calculus Residual subgingival calculus can cause delayed healing in diabetics. 85 / 105 Category: Periodontics 85) What are the components of biological width? 1.5mm epithelium + 0.5mm CT 0.5mm epithelium + 1.5mm CT 2mm epithelium 1mm epithelium + 1mm CT Biological width consists of 1mm epithelium and 1mm connective tissue. 86 / 105 Category: Periodontics 86) Bone defect type shown in CBCT (distal root of #37)? 3-wall defect 2-wall defect 1-wall defect Crateriform Three walls (mesial, buccal, lingual) indicate 3-wall defect. 87 / 105 Category: Periodontics 87) What makes scaling and root planing difficult? Divergent and short roots Convergent and short roots Convergent and long roots Divergent and long roots Convergent and long roots are harder to instrument effectively. 88 / 105 Category: Periodontics 88) Microscopic findings in healthy gingival fluid? No inflammatory cells Many plasma cells Neutrophil predominance Few lymphocytes Healthy sites show minimal lymphocytes without active inflammation. 89 / 105 Category: Periodontics 89) What is the ideal angle for scaling? 10-15 degrees 45-90 degrees 0 degrees 20-30 degrees 45-90 degrees optimizes cutting efficiency. 90 / 105 Category: Periodontics 90) What are risk factors for periodontitis? Genetic factors Smoking All of the above Diabetes Multiple factors including smoking, diabetes, and genetics contribute. 91 / 105 Category: Periodontics 91) What procedure is shown in the edentulous area post-surgery? Flap surgery Bone grafting GBR GTR Guided Bone Regeneration (GBR) is used for ridge augmentation. 92 / 105 Category: Periodontics 92) Instrument grasp shown in image? Standard pen grasp Inverted grasp Modified pen grasp Palm-thumb grasp Modified pen grasp provides optimal control for scaling. 93 / 105 Category: Periodontics 93) Which image shows a double papilla flap? Image B Image D Image C Image A Double papilla flaps involve two papillae for wound closure. 94 / 105 Category: Periodontics 94) Advice for ulcerated gingiva from medium toothbrush? Switch to soft brush Discontinue brushing Change technique Use desensitizing paste Soft brushes prevent traumatic lesions in sensitive patients. 95 / 105 Category: Periodontics 95) Complication of impacted canine exposure? Recession Ankylosis Root resorption Pulp necrosis Surgical trauma often causes labial gingival recession. 96 / 105 Category: Periodontics 96) Risk for thin scalloped gingival phenotype? No significant risk Hyperplasia Recession Pocket formation Thin tissues are prone to recession from mechanical trauma. 97 / 105 Category: Periodontics 97) When to perform surgery after nonsurgical therapy? 8-10 weeks Immediately 4-6 weeks 12 weeks 4-6 weeks allows evaluation of initial therapy results. 98 / 105 Category: Periodontics 98) Gracey 11/12 curette use? Mesial of #36 Buccal of #24 Lingual of #41 Distal of #36 Designed for mesial surfaces of posterior teeth. 99 / 105 Category: Periodontics 99) Best treatment for multiple 1-2mm recessions with sensitivity? Connective tissue graft Free gingival graft Coronally advanced flap Apically positioned flap CT grafts offer superior esthetics for anterior teeth with minimal recession. 100 / 105 Category: Periodontics 100) Action for calculus preventing pocket measurement? Record as-is Estimate visually Use radiographic measurement Scale first Calculus removal is prerequisite for accurate probing. 101 / 105 Category: Periodontics 101) What does this image show? Periodontal pocket Herpetic lesion Gingival abscess Lichen planus Localized red swelling indicates gingival abscess. 102 / 105 Category: Periodontics 102) Diagnosis for swelling after scaling in diabetic patient? Periapical abscess Cellulitis Periodontal abscess Gingivitis Localized swelling post-scaling suggests periodontal abscess. 103 / 105 Category: Periodontics 103) What instrument measures gingival thickness? Bone caliper Ultrasonic scaler Periodontal probe Probe with markings Probes with markings (e.g., UNC-15) are standard for thickness measurement. 104 / 105 Category: Periodontics 104) Post-treatment evaluation with less than 5% bleeding on probing (BOP) with good oral hygiene indicates? Periodontal healing Need for surgery Systemic involvement Treatment failure Low BOP demonstrates successful tissue inflammation control. 105 / 105 Category: Periodontics 105) Difference between dehiscence and fenestration? Fenestration: isolated bone loss No difference Both involve gingival recession Dehiscence: bone loss to apex Fenestration is isolated bone loss without apical involvement. 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