**Question:** Which is not a contraindication of apicectomy?

A. Age
B. Severe infection
C. Uncontrolled diabetes mellitus
D. Poor oral hygiene

**Core Concept:** Contraindications for apicectomy are conditions or factors that make a patient unsuitable for the procedure due to an increased risk or poor prognosis. Apicectomy is an endodontic procedure aimed at treating an infected root tip, typically performed in cases of persistent apical periodontitis or abscesses despite conventional root canal therapy.

**Why the Correct Answer is Right:** Age is not a specific contraindication for apicectomy. While older patients might have a higher risk profile due to comorbidities, age per se does not preclude the procedure.

**Why Each Wrong Option is Incorrect:**

B. Severe infection: Infections can be a strong indication for apicectomy, as the procedure aims to relieve the patient's pain and resolve the infection.

C. Uncontrolled diabetes mellitus: Uncontrolled diabetes can increase the risk of complications, and poor glycemic control might hinder the healing process post-operatively. However, diabetes mellitus itself is not a direct contraindication for apicectomy.

D. Poor oral hygiene: Poor oral hygiene can contribute to an increased risk of postoperative complications, but it is not a direct contraindication for apicectomy. Maintaining good oral hygiene is crucial for successful post-operative healing and infection control.

**Poor oral hygiene is not directly related to apicectomy.** It is more a preoperative consideration for overall patient health and management of potential post-operative complications.

**Clinical Pearl:** The most crucial factor to consider when deciding on apicectomy is the presence of a severe, persistent apical periodontitis or abscess despite endodontic treatment. While age, uncontrolled diabetes, and poor oral hygiene are considerations, they are not direct contraindications for apicectomy. The procedure should be performed when the benefits outweigh the risks, and proper patient selection is critical for successful treatment outcomes.