Some reasons to consider treating a posterior crossbite without a functional shift include:
1. Dental alignment: Correcting the crossbite can help establish proper alignment of the teeth, improving their function and aesthetics.
2. Prevention of asymmetry: An untreated crossbite can lead to asymmetrical growth of the jaws and facial structures. Early treatment can help minimize the risk of developing facial asymmetry.
3. Functional concerns: Even in the absence of a functional shift, a crossbite can affect chewing efficiency and jaw function. Correcting the crossbite can improve oral function and prevent potential issues with jaw joint problems (temporomandibular disorders) in the future.
4. Stability of results: Treating a posterior crossbite early may result in more stable and predictable long-term outcomes compared to delaying treatment.