Ultimate Flashcards
7 cards from real NBDE practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Ultimate flashcards as text
The biologic width is composed of which two tissue components?
Answer: Junctional epithelium and supracrestal connective tissue attachment
The biologic width (~2 mm) consists of the junctional epithelium (~1 mm) and the supracrestal connective tissue attachment (~1 mm) coronal to the alveolar crest.
In Andrews' Six Keys to normal occlusion, the mesiobuccal cusp of the maxillary first molar occludes with the:
Answer: Buccal groove of the mandibular first molar
The mesiobuccal cusp of the maxillary first molar occludes in the buccal groove of the mandibular first molar in an ideal Class I molar relationship.
Which periodontal fiber group runs roughly parallel to the root surface and perpendicular to the long axis of the tooth, connecting cementum to alveolar bone?
Answer: Alveolar crest fibers
Alveolar crest fibers run horizontally from the cementum just below the CEJ to the alveolar crest, resisting lateral forces.
Alveolar osteitis (dry socket) following tooth extraction is most frequently associated with which site?
Answer: Mandibular third molars
Mandibular third molars have the highest incidence of dry socket, estimated at 20-35%, due to poor blood supply, difficult extraction, and fibrinolytic activity in this region.
Angle Class II Division 2 malocclusion is characterized by:
Answer: Retroclined maxillary central incisors with a deep overbite
Class II Division 2 features a Class II molar relationship with lingually inclined maxillary central incisors, resulting in a deep (excessive) overbite.
Which periodontal pathogen is most strongly associated with chronic adult periodontitis and is considered a keystone pathogen?
Answer: Porphyromonas gingivalis
Porphyromonas gingivalis is the primary keystone pathogen in chronic periodontitis, disrupting host immune responses and promoting dysbiotic plaque communities.
A patient with a non-displaced mandibular condyle fracture and intact occlusion is best managed with:
Answer: Conservative management with soft diet and physiotherapy
Non-displaced condyle fractures with intact occlusion in adults are managed conservatively with a soft diet, analgesics, and jaw exercises to maintain mobility.