Endodontic Diagnosis and Treatment Flashcards
7 cards from real AGD practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Endodontic Diagnosis and Treatment flashcards as text
Vertical root fracture (VRF) in an endodontically treated tooth most characteristically shows which radiographic finding?
Answer: A 'halo' or 'J-shaped' periapical radiolucency along the root
Vertical root fractures often present with a 'halo' or 'J-shaped' radiolucency along the lateral aspect of the root due to bone loss on both sides.
Mineral trioxide aggregate (MTA) is the preferred material for apexification in immature permanent teeth because it:
Answer: Induces cementum-like hard tissue and is biocompatible
MTA creates an apical plug, induces hard tissue formation, and demonstrates superior biocompatibility, making it ideal for apexification procedures.
A patient develops paresthesia of the lower lip following extraction of a mandibular molar. Which nerve was most likely affected?
Answer: Inferior alveolar nerve
The inferior alveolar nerve runs through the mandibular canal adjacent to molar roots; injury during extraction or endodontic intervention causes lower lip paresthesia.
Which diagnostic test best differentiates a crack confined to enamel from one extending into the pulp?
Answer: Bite test using a Tooth Slooth device
The Tooth Slooth bite test localizes which cusp is cracked; pain on release (rebound pain) suggests crack extension toward or into the pulp.
In regenerative endodontics for immature necrotic teeth, the biological scaffold used to support tissue ingrowth is:
Answer: A blood clot, platelet-rich plasma, or platelet-rich fibrin
A blood clot or platelet concentrates serve as a scaffold for stem cell migration and tissue regeneration in revascularization procedures.
During canal shaping, 'ledge formation' is most likely to occur when:
Answer: Using small stiff stainless steel files in curved canals without pre-curving
Stiff stainless steel files in curved canals tend to straighten against the outer wall, cutting a false step (ledge) that blocks access to the apex.
The 'glide path' in rotary endodontics refers to:
Answer: A smooth, reproducible path created to the working length before rotary instrumentation
Establishing a glide path with small hand files before rotary instrumentation prevents torsional fracture by allowing rotary files to follow a pre-formed pathway.