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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% 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101 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 / 101 Category: Periodontics 1) Bacteria causing horizontal bone loss in 60-year-old? Fusobacterium Streptococci Porphyromonas Actinomyces Actinomyces species are linked to chronic horizontal bone loss. 2 / 101 Category: Periodontics 2) Action for calculus preventing pocket measurement? Use radiographic measurement Scale first Estimate visually Record as-is Calculus removal is prerequisite for accurate probing. 3 / 101 Category: Periodontics 3) What makes scaling and root planing difficult? Divergent and short roots Convergent and short roots Divergent and long roots Convergent and long roots Convergent and long roots are harder to instrument effectively. 4 / 101 Category: Periodontics 4) How is recession type II treated? Crown lengthening Gingival graft Guided tissue regeneration Flap surgery Gingival/connective tissue grafts are gold standard for type II recession. 5 / 101 Category: Periodontics 5) Gingival enlargement covering 3/4 crown is class? Class 4 Class 2 Class 1 Class 3 Class 3 covers >1/2 but not entire crown (Seymour classification). 6 / 101 Category: Periodontics 6) Complication of impacted canine exposure? Root resorption Pulp necrosis Ankylosis Recession Surgical trauma often causes labial gingival recession. 7 / 101 Category: Periodontics 7) Treatment for periodontal abscess in diabetic patient? Both Local debridement Observation Systemic antibiotics Diabetics require both local treatment and possible antibiotics. 8 / 101 Category: Periodontics 8) Cause of painful implant with exposed metal collar? Poor oral hygiene Prosthetic misfit Occlusal overload Loss of epithelial attachment Exposed metal indicates breakdown of soft tissue seal around implant. 9 / 101 Category: Periodontics 9) When does dental plaque begin to form? 6 hours 24 hours 48 hours 12 hours Plaque formation starts within 12 hours after cleaning. 10 / 101 Category: Periodontics 10) Gracey 11/12 curette use? Mesial of #36 Distal of #36 Buccal of #24 Lingual of #41 Designed for mesial surfaces of posterior teeth. 11 / 101 Category: Periodontics 11) Piezoscaler working motion? Elliptical Rotary Vertical Back-and-forth Piezoelectric scalers use linear back-and-forth motion. 12 / 101 Category: Periodontics 12) Which tooth is most difficult to scale? Distobuccal root of upper 7 Lower molar Upper canine Upper 4 Upper 4’s root anatomy makes scaling challenging. 13 / 101 Category: Periodontics 13) Purpose of resective osteotomy after perio treatment? Recontouring Furcation plasty Regeneration Pocket reduction Recontouring modifies physiological bone architecture. 14 / 101 Category: Periodontics 14) Bacteria associated with pregnancy gingivitis? S. mutans T. denticola A. actinomycetemcomitans P. intermedia P. intermedia thrives in elevated progesterone levels. 15 / 101 Category: Periodontics 15) Which cells repair pulp tissue after injury? Fibroblasts Odontoblasts Undifferentiated mesenchymal cells Cementoblasts Undifferentiated mesenchymal cells differentiate to regenerate pulp. 16 / 101 Category: Periodontics 16) Bone architecture with papilla loss exceeding other areas? Flat architecture Normal architecture Reversed architecture Inverted architecture Reversed architecture shows greater interdental than radicular bone loss. 17 / 101 Category: Periodontics 17) Interpretation of 40% plaque and 20% BOP scores? Attempts but ineffective Excellent oral hygiene Knows technique but inconsistent Lacks knowledge/motivation High plaque score indicates fundamental behavioral/oral hygiene deficiencies. 18 / 101 Category: Periodontics 18) How many days until dental calculus forms? 21-28 days 1-2 days 3-5 days 10-14 days Calculus typically mineralizes from plaque in 10-14 days. 19 / 101 Category: Periodontics 19) Causative bacteria in aggressive periodontitis with family history? P. gingivalis T. forsythia F. nucleatum A. actinomycetemcomitans A.a is strongly associated with familial aggressive periodontitis. 20 / 101 Category: Periodontics 20) What are the components of biological width? 2mm epithelium 1mm epithelium + 1mm CT 1.5mm epithelium + 0.5mm CT 0.5mm epithelium + 1.5mm CT Biological width consists of 1mm epithelium and 1mm connective tissue. 21 / 101 Category: Periodontics 21) Which tooth is most challenging for periodontal treatment? Upper canine Upper first premolar Lower central incisor Lower second molar Upper first premolar’s mesial root concavity complicates treatment. 22 / 101 Category: Periodontics 22) Gingival changes associated with aging? Decreased keratinized tissue Reduced vascularity Increased attached gingiva Thinner epithelium Attached gingiva increases due to apical migration of junctional epithelium. 23 / 101 Category: Periodontics 23) Minimal distance from restoration to bone crest in furcation areas? 2-3mm 3-4mm 4-5mm 5-6mm 5-6mm prevents biological width violation in complex furcation anatomy. 24 / 101 Category: Periodontics 24) Treatment for excessive gingival display with short clinical crowns? Gingivectomy Porcelain veneers Crown lengthening Orthodontic extrusion Gingivectomy corrects excessive gingival display when no bone reduction needed. 25 / 101 Category: Periodontics 25) Microscopic findings in healthy gingival fluid? Few lymphocytes Many plasma cells No inflammatory cells Neutrophil predominance Healthy sites show minimal lymphocytes without active inflammation. 26 / 101 Category: Periodontics 26) Smoking’s effect on bone? No significant effect Accelerates resorption Increases density Causes osteosclerosis Smoking impairs osteoblast function and angiogenesis. 27 / 101 Category: Periodontics 27) Post-treatment evaluation with less than 5% bleeding on probing (BOP) with good oral hygiene indicates? Treatment failure Periodontal healing Systemic involvement Need for surgery Low BOP demonstrates successful tissue inflammation control. 28 / 101 Category: Periodontics 28) Treatment for Class II furcation? Tunnel preparation GTR Extraction SRP Guided Tissue Regeneration (GTR) is indicated for Class II furcations. 29 / 101 Category: Periodontics 29) Treatment for Class I furcation? GTR Flap surgery SRP Extraction Scaling and root planing (SRP) is sufficient for Class I furcation. 30 / 101 Category: Periodontics 30) Difference between dehiscence and fenestration? No difference Both involve gingival recession Dehiscence: bone loss to apex Fenestration: isolated bone loss Fenestration is isolated bone loss without apical involvement. 31 / 101 Category: Periodontics 31) Instrument grasp shown in image? Standard pen grasp Inverted grasp Modified pen grasp Palm-thumb grasp Modified pen grasp provides optimal control for scaling. 32 / 101 Category: Periodontics 32) Cause of painful implant (no mobility/bone loss)? Peri-implant mucositis Prosthetic overload Failed osseointegration Nerve impingement Mucositis causes pain without bone loss in early stages. 33 / 101 Category: Periodontics 33) What is the normal probing depth of healthy gingiva? 2-4 mm 3-5 mm 0.5-2 mm 1-3 mm 1-3 mm is the physiologic sulcus depth without pathology. 34 / 101 Category: Periodontics 34) Key diagnostic difference between periapical/periodontal abscess? Tooth vitality Swelling location Radiographic appearance Pain characteristics Vitality testing is primary determinant (vital=periodontal, non-vital=periapical). 35 / 101 Category: Periodontics 35) Why does #7 show Class II furcation vs #6’s Class I? #6 has convergent roots #7 has short roots #6 has long roots #7 has divergent roots Root length directly affects furcation vulnerability. 36 / 101 Category: Periodontics 36) If gingival margin is 2mm from CEJ and PD is 6mm, what is CAL? 6mm 8mm 4mm 2mm CAL = (Gingival margin to CEJ) + PD = 2 + 6 = 8mm. 37 / 101 Category: Periodontics 37) Movement pattern of magnetic scaler tip? Zigzag Linear Round Elliptical Elliptical motion provides optimal calculus removal. 38 / 101 Category: Periodontics 38) Plastic curettes are used for? Implant surfaces Ceramic crowns Enamel Dentin hypersensitivity Plastic instruments prevent implant surface damage. 39 / 101 Category: Periodontics 39) Which probe has 3 sections? UNC probe Marquis probe Williams probe WHO probe Marquis probe features 3 sections (3-6-9mm markings). 40 / 101 Category: Periodontics 40) Drug causing gingival hyperplasia? Anticoagulants Calcium channel blockers Beta blockers Antibiotics Nifedipine/amlodipine frequently induce gingival overgrowth. 41 / 101 Category: Periodontics 41) Diagnosis for swelling after scaling in diabetic patient? Periapical abscess Cellulitis Periodontal abscess Gingivitis Localized swelling post-scaling suggests periodontal abscess. 42 / 101 Category: Periodontics 42) Most common periodontal disease sign? Suppuration Recession Tooth mobility Bleeding on probing BOP is the earliest detectable clinical sign. 43 / 101 Category: Periodontics 43) What procedure is shown in the edentulous area post-surgery? GTR GBR Bone grafting Flap surgery Guided Bone Regeneration (GBR) is used for ridge augmentation. 44 / 101 Category: Periodontics 44) Treatment for localized recession without interproximal loss? Composite restoration Night guard therapy Root coverage surgery Pink porcelain crown Surgical root coverage provides predictable results for Miller Class I recession. 45 / 101 Category: Periodontics 45) Best instrument for subgingival calculus? Gracey curette Sickle scaler Ultrasonic scaler Piezoscaler Gracey curettes access subgingival areas effectively. 46 / 101 Category: Periodontics 46) Management of gingival abscess? Antibiotics Observation Incision and drainage Both Gingival abscesses require drainage and possible antibiotics. 47 / 101 Category: Periodontics 47) How to detect subgingival calculus? Disclosing agent Visual inspection Tactile perception Radiographs Tactile perception with a probe is most reliable for subgingival calculus. 48 / 101 Category: Periodontics 48) Why might periodontitis recur in a heavy smoker? Smoking Poor oral hygiene All of the above Incomplete calculus removal Smoking impairs healing and masks bleeding, complicating maintenance. 49 / 101 Category: Periodontics 49) What is the probe angulation during measurement? 45 degrees 30 degrees 10 degrees 20 degrees 10 degrees ensures accurate pocket depth reading. 50 / 101 Category: Periodontics 50) 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 C periodontitis Generalized Stage III Grade B periodontitis Localized Stage III Grade C periodontitis Localized Stage III Grade A periodontitis Smoking + severe attachment loss indicates Grade C. 51 / 101 Category: Periodontics 51) Diagnosis for pain after eating popcorn? Gingival abscess Periodontal abscess Food impaction ANUG Popcorn husks commonly cause traumatic gingival abscesses. 52 / 101 Category: Periodontics 52) Management of persistent isolated pocket? Surgical resection Systemic antibiotics Local antibiotic delivery Observation Local antibiotics target refractory sites effectively. 53 / 101 Category: Periodontics 53) Example of digital periodontal probe? Pro-Depth Florida probe PerioTemp All of above Florida probe is the most widely used digital probing system. 54 / 101 Category: Periodontics 54) 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. 55 / 101 Category: Periodontics 55) Interpretation of furcation differences between #16 and #17? #16 has fused roots #17 has longer roots #16 has divergent roots #17 has shorter root trunk Shorter root trunks lead to more advanced furcation involvement. 56 / 101 Category: Periodontics 56) Instrument modification for deep posterior pockets? Thicker blade Curved tip Smaller handle Longer terminal shank Extended shank improves access to posterior areas. 57 / 101 Category: Periodontics 57) Tooth with recent amalgam and Class 2 mobility indicates? Secondary occlusal trauma Periodontal abscess Primary occlusal trauma Root fracture Secondary trauma occurs with compromised periodontium. 58 / 101 Category: Periodontics 58) Best flap for lesion distal to lower second molar? Pedicle Envelope Semilunar Intrasulcular Intrasulcular flaps provide optimal access to posterior lesions. 59 / 101 Category: Periodontics 59) Bone regeneration technique shown in CBCT? Block graft GBR Socket grafting Ridge preservation Block grafts are used for significant vertical/horizontal defects. 60 / 101 Category: Periodontics 60) 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. 61 / 101 Category: Periodontics 61) Cause of bleeding post-laser gingivectomy? Laser side effect Plaque accumulation Spontaneous bleeding Allergic reaction Plaque-induced inflammation overrides laser benefits. 62 / 101 Category: Periodontics 62) Which scaler has a unique angulation? Gracey Universal Sickle Bone file Gracey curettes have area-specific angled blades. 63 / 101 Category: Periodontics 63) What is the main cell type in established gingivitis? Plasma cell Macrophage Lymphocyte Neutrophil Plasma cells dominate chronic inflammation in gingivitis. 64 / 101 Category: Periodontics 64) Cause of gingival enlargement after eating fish? Allergic reaction Periodontal abscess Food impaction Gingival abscess Fish bones may cause traumatic gingival abscesses. 65 / 101 Category: Periodontics 65) What is an indication for resective osseous surgery? One-wall defect Furcation involvement Gingival recession Three-wall defect Three-wall defects respond well to resective osseous surgery. 66 / 101 Category: Periodontics 66) Boundary between attached/unattached gingiva? Free gingival groove Alveolar mucosa Mucogingival junction Interdental papilla Free gingival groove marks the apical border of unattached gingiva. 67 / 101 Category: Periodontics 67) When to perform surgery after nonsurgical therapy? 12 weeks Immediately 4-6 weeks 8-10 weeks 4-6 weeks allows evaluation of initial therapy results. 68 / 101 Category: Periodontics 68) Best treatment for multiple 1-2mm recessions with sensitivity? Free gingival graft Apically positioned flap Coronally advanced flap Connective tissue graft CT grafts offer superior esthetics for anterior teeth with minimal recession. 69 / 101 Category: Periodontics 69) Treatment for diabetic patient with swelling and pus at #46? Extraction SRP Incision and drainage Antibiotics Scaling and root planing is first-line treatment for periodontal abscesses. 70 / 101 Category: Periodontics 70) Effect of mesially tilted lower third molar extraction? Mesial bone loss on #7 Distal wall defect on #7 No significant effect Complete bone regeneration Third molar extraction often leaves distal defects on adjacent teeth. 71 / 101 Category: Periodontics 71) What does this image show? Periodontal pocket Lichen planus Gingival abscess Herpetic lesion Localized red swelling indicates gingival abscess. 72 / 101 Category: Periodontics 72) Minimal bone-to-restoration margin distance? 3mm 2mm 4mm 5mm 3mm maintains biological width (1mm epithelium + 1mm CT + 1mm sulcus). 73 / 101 Category: Periodontics 73) Risk for thin scalloped gingival phenotype? No significant risk Hyperplasia Pocket formation Recession Thin tissues are prone to recession from mechanical trauma. 74 / 101 Category: Periodontics 74) What is the universal curette’s working angle? 120 degrees 90 degrees 60 degrees 45 degrees 90 degrees is the standard working angle for universal curettes. 75 / 101 Category: Periodontics 75) Treatment for short anterior teeth with normal periodontium? Composite bonding Gingival grafts No treatment needed Esthetic crown lengthening Crown lengthening improves crown-to-root ratio for esthetics. 76 / 101 Category: Periodontics 76) What angle should a curette be inserted for subgingival scaling? 30 degrees 20 degrees 10 degrees 0 degrees 0 degrees allows smooth subgingival insertion. 77 / 101 Category: Periodontics 77) Flap choice for 3-wall defect between #44-45? Envelope flap Semilunar flap Pedicle flap Papilla preservation flap Preserves interdental papilla for optimal healing. 78 / 101 Category: Periodontics 78) Attached gingiva boundaries? Sulcus base to bone crest Interdental col to frenum CEJ to free margin Free groove to mucogingival line Defined coronally by free groove and apically by mucogingival junction. 79 / 101 Category: Periodontics 79) Main concern with excessive alcohol mouthwash use? Oral mucosal dryness Tooth staining Enamel demineralization Altered taste perception Alcohol causes xerostomia and disrupts oral microbiome balance. 80 / 101 Category: Periodontics 80) What is the diameter of a periodontal probe tip? 0.3 mm 1 mm 2 mm 0.5 mm Standard periodontal probes have 0.5mm tips for accurate measurements. 81 / 101 Category: Periodontics 81) What is the color coding sequence of UNC-15 probe? Alternating colors Every 1mm Every 5mm (5,10,15) Every 3mm UNC-15 probes mark every 5mm for easy depth assessment. 82 / 101 Category: Periodontics 82) Management of gingival recession with CEJ caries? Monitoring Restoration first Gingival graft first Combined procedure Gingival graft should precede restoration to ensure proper tissue coverage. 83 / 101 Category: Periodontics 83) How long to wait after crown lengthening for crown fabrication? 7-8 months 3-4 months 1-2 months 5-6 months 3-4 months allows for gingival stability and tissue maturation. 84 / 101 Category: Periodontics 84) What is the ideal angle for scaling? 10-15 degrees 45-90 degrees 0 degrees 20-30 degrees 45-90 degrees optimizes cutting efficiency. 85 / 101 Category: Periodontics 85) Which radiograph detects biological width violation? Panoramic Periapical Occlusal Vertical bitewing Vertical bitewings show alveolar crest and crown-root relationships clearly. 86 / 101 Category: Periodontics 86) Treatment for Class I and II furcation? Observation SRP Combination therapy GTR Combination therapy works best for mixed furcation classes. 87 / 101 Category: Periodontics 87) 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. 88 / 101 Category: Periodontics 88) What is the treatment for Stillman’s cleft? Free gingival graft Connective tissue graft Laser therapy Gingivectomy Connective tissue grafts cover recessions like Stillman’s cleft. 89 / 101 Category: Periodontics 89) Advice for ulcerated gingiva from medium toothbrush? Discontinue brushing Switch to soft brush Use desensitizing paste Change technique Soft brushes prevent traumatic lesions in sensitive patients. 90 / 101 Category: Periodontics 90) What treatment is needed after orthodontic removal? RCT Restoration SRP Crown Scaling and root planing (SRP) is essential after orthodontic treatment. 91 / 101 Category: Periodontics 91) Gingival enlargement in renal failure patients? Diuretics NSAIDs Calcium channel blockers Beta blockers CCBs cause fibrous gingival overgrowth. 92 / 101 Category: Periodontics 92) Disadvantage of Florida probe? Requires calibration High cost Limited accessibility All of above Combines all common limitations of electronic probes. 93 / 101 Category: Periodontics 93) Best radiograph for advanced periodontitis? Occlusal Panoramic Periapical Vertical bitewing Vertical bitewings show bone loss patterns best. 94 / 101 Category: Periodontics 94) Diagnosis for post-scaling abscess? Herpetic lesion Periodontal abscess Pericoronitis Gingival abscess Periodontal abscesses commonly occur after scaling. 95 / 101 Category: Periodontics 95) What are risk factors for periodontitis? Diabetes Smoking Genetic factors All of the above Multiple factors including smoking, diabetes, and genetics contribute. 96 / 101 Category: Periodontics 96) When does CAL equal PD? With no recession With pocket formation With bone loss With gingival hyperplasia CAL = PD when no recession exists (e.g., sulcus depth = attachment level). 97 / 101 Category: Periodontics 97) When does initial gingivitis begin? 4-7 days 1-2 days 14-21 days 2-4 days Initial gingivitis signs appear within 2-4 days of plaque accumulation. 98 / 101 Category: Periodontics 98) 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. 99 / 101 Category: Periodontics 99) What is the yellowish material on teeth that can’t be rinsed off? Food debris Plaque Calculus Stains Plaque is the initial biofilm that adheres firmly to teeth. 100 / 101 Category: Periodontics 100) Why do dentists advise patients to brush dentures daily? To remove plaque To avoid inflammation To avoid bad smell To prevent cross infections Daily brushing prevents bacterial buildup causing bad odor. 101 / 101 Category: Periodontics 101) Cause of swelling after scaling in diabetic patient? Unremoved calculus Trauma Allergic reaction Infection Residual subgingival calculus can cause delayed healing in diabetics. Your score is The average score is 54% 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
