Which of the following statements about endodontic-periodontic lesions is false?

In the context of endodontic-periodontic lesions, the statement that is considered false is related to the treatment sequence for secondary periodontal lesions.

Typically, when there's an endodontic-periodontic lesion, the management of these conditions can be complex, often requiring a distinction between primary and secondary periodontal involvement. Secondary periodontal lesions are usually a result of the primary endodontic issue when there is already periodontal disease present.

In general practice, it is often more effective to address the endodontic issue first before treating the periodontal condition. This prioritization allows for a clearer understanding of the healing response and may prevent further complications arising from ongoing endodontic problems during the periodontal treatment. Therefore, the suggestion that periodontal treatment should occur first for secondary periodontal lesions deviates from the common clinical approach.

Understanding the correct sequence of treatment is crucial for effective patient management, as addressing the primary problem effectively can aid in the resolution of secondary lesions. The other statements provide accurate representations of the relationships and characteristics of lesions involving both pulp and periodontal tissues. For example, a combined lesion can indeed radiographically mimic a vertical root fracture due to the similar appearances it may create on imaging and there are various anatomical canals that create connections between the pulp and periodontal ligaments yet