NBDHE Practice Test 7
10 free NBDHE practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
NBDHE Practice Test 7Tutor mode
Question 1 of 10
Case Based ItemsPatient Case
| Field | Details |
|---|---|
| Patient | Male, 64 years |
| Chief Complaint | "My gums bleed a little when I floss, and I want to keep my teeth for the rest of my life." |
| Background and/or Patient History | Mechanical aortic valve replacement 4 years ago. Atrial fibrillation. Drug-eluting coronary stent placed 9 years ago. Right knee arthroplasty 3 years ago. Medications: warfarin 5 mg daily; metoprolol succinate 50 mg daily; atorvastatin 40 mg daily. Anticoagulation is monitored by an outside clinic; the most recent laboratory result is not in the record. Periodontitis treated with scaling and root planing and periodontal surgery 7 years ago; tooth 15 removed at that time because of periodontitis. Periodontal maintenance every 4 months; last visit 4 months ago. |
| Allergies | Penicillin (hives) |
| Social History | Smoked 30 cigarettes per day for 20 years; quit 12 years ago. One glass of wine with dinner on weekends. Retired bus mechanic. |
| Current Findings | BP 124/76 mm Hg; pulse 68 bpm, irregular. Oral hygiene: good, with light plaque at posterior interproximal areas; bleeding on probing at 32% of sites. |
| Tooth | Facial PD (D-F-M) | Lingual PD (D-L-M) | Recession F / L | BOP | Mobility | Furcation |
|---|---|---|---|---|---|---|
| 2 | 3-2-3 | 3-2-3 | 2 / 1 | D-F, M-L | 0 | — |
| 3 | 3-2-3 | 3-2-3 | 3 / 2 | D-F-M, M-L | 0 | — |
| 8 | 2-1-2 | 2-1-2 | 1 / 1 | — | 0 | — |
| 14 | 3-2-3 | 3-2-3 | 3 / 2 | D-F, D-L | 0 | — |
| 19 | 3-2-3 | 3-2-3 | 2 / 2 | M-F, M-L | 0 | — |
| 24 | 2-1-2 | 2-2-2 | 2 / 1 | — | 0 | — |
| 30 | 3-2-3 | 3-2-3 | 3 / 2 | D-F-M, D-L | 0 | — |
| 31 | 3-2-3 | 3-2-3 | 2 / 1 | D | 0 | — |
| Tooth | Condition |
|---|---|
| 1, 16, 17, 32 | Missing (third molars) |
| 15 | Missing (removed for periodontitis 7 years ago) |
| 3 | Occlusal composite |
| 19 | Porcelain-fused-to-metal crown |
| 30 | MOD amalgam |
Radiograph description (bitewings): Posterior bone crests 3–5 mm apical to the CEJ, with a level, well-defined crestal lamina dura; no change in bone levels compared with bitewings taken 2 years earlier; no proximal radiolucencies in enamel or dentin; no furcation radiolucencies.
Clinical photograph description: Red, slightly edematous interdental papillae in the posterior sextants; firm, pink gingiva elsewhere; generalized 1–3 mm recession; no mucosal lesions.
Under the AHA 2021 scientific statement, which condition in the history indicates antibiotic prophylaxis before periodontal maintenance?