Archive | Aetiology of Apical Periodontitis

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Viral Pulpitis. This Would Have to Hurt…..

  We usually blame bacteria for causing pulpitis but………. This patient complained of severe irreversible pulpitis symptoms for four days, which were only just starting to settle. She couldn’t isolate to either the upper second premolar or molar. Her dentist had extirpated the molar but symptoms hadn’t changed. Pulp testing showed the premolar was also […]

The Lazy Man’s Guide to Persistent Apical Periodontitis

Persistent Apical Periodontitis (AP) refers to AP that is associated with a tooth that has had root canal therapy (RCT).  As with primary AP, bacteria are the most common cause of the inflammatory response (Sudqvist et al. 1998). Previously there has been a large body of evidence that persistent infections are commonly composed of a […]

The Lazy Man’s Guide to the Microbial Causes of Primary Apical Periodontitis

This is a dry topic, so we’ll try to cover it as simply as possible. If you just want the outline, check out the study guide at the end of the blog post. So Microorganisms cause Apical Periodontitis. How do they get into the tooth? Primary apical periodontitis (AP) occurs when microorganisms (let’s call them […]

Persistant Apical Periodontitis

The Lazy Man’s Guide to the Aetiology of Apical Periodontitis

Generally, apical periodontitis (AP) is a result of microorganisms entering the root canal system. Of course there are other causes of inflammation in the apical area, such as trauma, traumatic occlusion and foreign body reactions, but if we’re talking about common AP, then “bugs” are the cause (Abbott 2004, Harn et al. 2001). The classic […]