If the vertical root fracture occurs through the crown furcation of a maxillary molar in a mesiodistal plane, treatment indicated is:
**Core Concept**
A vertical root fracture (VRF) is a complex dental trauma involving a crack in the root of a tooth, typically caused by a sudden or repetitive force. In the context of maxillary molars, VRFs can occur in various planes, including the mesiodistal plane, which passes through the crown furcation.
**Why the Correct Answer is Right**
In cases of VRF through the crown furcation of a maxillary molar in a mesiodistal plane, the primary concern is the potential for further root fracture or tooth loss. The treatment of choice is usually **endodontic therapy followed by extraction of the tooth**. This approach is recommended because the root fracture compromises the structural integrity of the tooth, making it challenging to restore or save the tooth. Additionally, the presence of a VRF often indicates a more extensive damage to the pulp, which cannot be adequately treated with conventional endodontic therapy.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because a crown or onlay may not be sufficient to address the underlying root fracture, and it may not provide adequate support to the tooth.
* **Option B:** This option is incorrect because a root canal therapy alone may not be sufficient to address the root fracture, and it may not provide adequate support to the tooth.
* **Option D:** This option is incorrect because a bridge or partial denture may not be suitable for a tooth with a vertical root fracture, as it may compromise the remaining tooth structure.
**Clinical Pearl / High-Yield Fact**
In cases of vertical root fracture, it's essential to consider the prognosis of the tooth and the potential for further complications. A thorough evaluation of the tooth's remaining structure and the presence of any other dental or periodontal problems is crucial in determining the best course of treatment.
**Correct Answer: C.**