What is the expected consequence of not extending the occlusal lingual walls in deciduous teeth preparations?

In the context of preparing deciduous teeth, not extending the occlusal lingual walls can indeed be seen as being acceptable, which aligns with the choice indicating that it is not necessary in preparation. In pediatric dentistry, the approach often focuses on preserving as much tooth structure as possible while ensuring that the preparation is adequate to prevent further decay and facilitate proper restoration.

Deciduous teeth are smaller and have a different anatomy compared to permanent teeth, which means their preparations may not require as extensive modifications. The goal is to maintain the vitality and functionality of the tooth until it naturally exfoliates, while also ensuring that the filling materials can effectively seal the cavity without the need for overly aggressive preparation that could jeopardize the tooth’s integrity or lead to unnecessary structural alterations.

Where the other choices refer to increased decay risk and decreased structural integrity, these factors can be concerns in dental preparations, but they do not directly apply to the necessity of extending the occlusal lingual walls in all cases. In pediatric dentistry, careful considerations are made based on the specific case, and sometimes a less extensive approach is advisable. Improved cleaning ability pertains more to access in adult teeth than in the more straightforward anatomy of deciduous teeth.