Targeted Endodontic Access Preparation: Comparing Grid-Guided and Freehand CBCT Techniques.

Introduction: Endodontic access is often one of the most challenging aspects of treatment, particularly in cases involving locating calcified or missed canals, or when performing selective retreatments of a targeted root. Therefore, the purpose of this study is to compare the accuracy of targeted accesses made using prefabricated grid to those made using freehand techniques with CBCT measurements METHODS: Twenty extracted maxillary molars were mounted into the TrueJaw maxillary model (PlanB Dental, CA). To replicate a clinical scenario where the tooth is extensively restored or has a calcified pulp chamber, the build-up material was intentionally placed directly over the canal orifices.

Dynamics of Bone Loss in Cases with Acute or Chronic Apical Abscess.

Introduction: Acute and chronic apical abscesses are 2 dramatic ways that periradicular tissues may react to pulpal infection and necrosis. Although both of these clinical states are the response to pulpal infection, their clinical manifestations are significantly different. It is not clear why the body responds to root canal infection in one way or another.