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